126results about How to "Implement active connection" patented technology

The invention discloses a connecting rod type intelligent robot, which comprises a guide rail, a base, a waist part, a big arm, a small arm and an actuator. The base is movably arranged on the guide rail; guide rail slots movably connected with the big arm are arranged at the upper end of the waist part; and guide rods matched with the guide rail slots are arranged at two sides of the lower end of the big arm. With the cooperation of the guide rail slots and the guide rods, the movable connection of the big arm and the waist part is realized, and when a failure occurred, the big arm and the part above the big arm are prevented from falling down; and the big arm is driven by a ball screw, so that the translation of the base, the rotation of the waist part, the translation of the big arm, the rotation of the small arm, the rotation of the actuator and the grabbing of the actuator work cooperatively, so that the grabbing requirement of each direction can be met.

The invention discloses an alternating current LED neon lamp belt based on FPCs. The alternating current LED neon lamp belt comprises a power source, a neon lamp belt main body, installation grooves and a tail end assembly, wherein the power source is internally provided with a control circuit, the neon lamp belt main body is connected with the power source through an input end connecting assembly, the installation grooves are used for installing the neon lamp belt main body, and the tail end assembly is located at the tail end of the neon lamp belt main body and used for blocking the neon lamp belt main body. The neon lamp belt main body comprises at least two neon lamp belt bodies which are subjected to extrusion molding through the FPCs, and the adjacent lamp belt bodies are movably connected through a middle end connecting assembly. According to the alternating current LED neon lamp belt based on the FPCs, the input end connecting assembly is arranged between the power source and the neon lamp belt bodies, and the middle end connecting assemblies are arranged between the neon lamp belt bodies, so that plug-pull movable connection between the power source and the neon lamp belt bodies as well as between the neon lamp belt bodies is achieved; and thus, the problem that the size dimension of a traditional neon lamp belt cannot be changed is completely solved, the environment adaptive capacity of the LED neon lamp belt is greatly improved, and the practical value of the LED neon lamp belt is improved.

The invention discloses a high-voltage LED flexible light bar based on an FPC. The high-voltage LED flexible light bar comprises a power supply in which a control circuit is arranged, a flexible light bar structure which is movably connected with the power supply by an input end connecting component, a mounting groove which is buckled at the middle part of the flexible light bar structure, and a tail plug which is blocked at the tail part of the flexible light bar structure, wherein the flexible light bar structure comprises at least two flexible light bars which are formed from FPC by extrusion molding; the adjacent flexible light bars are movably connected with each other by a middle end connecting component. According to the high-voltage LED flexible light bar disclosed by the invention, the input end connecting component is arranged between the power supply and the flexible light bars, and the middle end connecting component is arranged between the flexible light bars, so that plug-in type movable connection between the power supply and the flexible light bars and the plug-in type movable connection between the flexible light bars are realized; thus, the problem that the size of an existing LED light bar cannot be changed is completely solved, the environmental adaptation capability of the LED light bar is greatly improved, and the practical value of the LED light bar is increased.

The invention discloses a position feedback device for a working roller of a multi-roller mill and a position feedback control method of the position feedback device. A control system is matched with the corresponding position feedback device to perform position adjustment control on a roller system after a roller is replaced and before a roller leaning test is performed, so that effective support for the roller system is realized; transverse movement oil cylinders drive transverse movement arms to move along linear guide rails to reach initial set positions; rotating oil cylinders drive rotating arms to reach mechanical zero positions; position sensors are matched with the control system and the transverse movement oil cylinders to enable the transverse movement arms to reach positions where the transverse movement arms are in no-clearance surface contact with the rotating arms; and load sensors are matched with the control system and adjustment devices which are arranged at the central line positions of fixed arms and are used for adjusting the transverse movement arms so as to drive the transverse movement arms, the rotating arms and side supporting roller boxes to achieve the effect that a set value of a load difference between two sides can be met. The position feedback device for the working roller of the multi-roller mill and the position feedback control method of the position feedback device are high in load-deflection resistance, the stability of the roller system is high, and the surface quality of a rolled strip is high; and the stability of the rolling working condition and the rolling continuity are guaranteed.

The invention discloses a maintenance-free fully-preventive floor drain, comprising a hollow floor drain core, wherein a seal plate for spacing the upper and lower parts of the floor drain core is arranged in the floor drain core, a water outlet is arranged on the seal plate, a water retaining structure is arranged below the seal plate and comprises a lever, a rotating shaft used as a lever fulcrum, a clump weight arranged at one end of the lever and a water-retaining plate arranged between the water outlet and the other end of the lever, the water-retaining plate is in rotary connection with the rotating shaft and is used for seal fit with the water outlet, and the moment of the clump weight is greater than the moment of the water-retaining plate. The invention aims at providing the maintenance-free fully-preventive floor drain which is capable of thoroughly solving the problem of hair fiber accumulation, has good seal effect and prevents blow-by.

The invention provides a gate type plate shearing machine which is provided with front supporting points of a small structure and has a simple overall structure and low cost. The gate type plate shearing machine comprises a machine frame, a tool rest and an oil cylinder, wherein the tool rest is arranged on the machine frame through a three-point supporting structure in a vertical sliding mode, and the oil cylinder drives the tool rest to move vertically. The tool rest comprises a tool rest vertical plate and tool rest side plates fixed to the two sides of the tool rest. An upper blade is fixed to the lower edge of the oblique tool rest vertical plate, and a lower blade is fixed to the machine frame. The three-point supporting structure comprises the front supporting points, upper rear supporting points and lower rear supporting points, and the front supporting points, the upper rear supporting points and the lower rear supporting points are arranged on the machine frame. The front supporting points are elastic supporting points tightly pressed on the front of the tool rest, and the upper portion and the rear portion of the rear of the tool rest maintain contact with the upper rear supporting points and the lower rear supporting points respectively under the action of the elastic supporting points on the tool rest. The positions, in the vertical direction, of the lower rear supporting points are flush with the cutting edge of the lower blade.

The invention provides a foldable warning board, which comprises a vehicle body, a lower warning board and an upper warning board, wherein the vehicle body is connected to a transport cart; the vehicle body is movably connected to the lower end of the lower warning board; the upper end of the lower warning board is movably connected to the lower end of the upper warning board; the upper warning board and the lower warning board are both provided with warning boards. The warning board can be horizontally placed to be convenient for transportation in a non-working state, and the folding is convenient; the warning board is large in area and enough in height in folding and unfolding working states, the warning function can be better played, and the practical effect of the warning board is improved; and the occurrence of various accidents can be effectively prevented, the safety of construction operation is protected, and the occurrence of safety accidents is reduced.

The invention provides an on-line aeration device for sewage treatment. The on-line aeration device for the sewage treatment is characterized in that the on-line aeration device comprises a stereoscopic aeration tank arranged on a plurality of support columns, a stirring mechanism arranged on the stereoscopic aeration tank, a wind driven mechanism arranged on the lower portion of the plurality ofthe support columns and used for cooperating with the stirring mechanism, a power transmission mechanism disposed on the side face of the stereoscopic aeration tank and used for connecting the stirring mechanism and the wind driven mechanism, an auxiliary drive mechanism arranged on on side of the support columns and used for cooperating with the power transmission mechanism, and a control mechanism used for controlling the wind driven mechanism, the stirring mechanism, the power transmission mechanism and the auxiliary drive mechanism. The on-line aeration device for the sewage treatment hasthe advantages that with a cleaning module arranged on the bottom surface of the stereoscopic tank, siltation can be reduced, and effect of aeration treatment is improved; furthermore, the on-line aeration device can not only reduce the consumption of energy and conduct high-efficient on-line treatment with small, but also occupy small site resources and improve land utilization ratio.

The invention discloses a medicament bottle locking structure for preventing children from opening a medicament bottle by accident. The medicament bottle locking structure comprises a cover body and abottle body. The double-layer cover body is arranged, a first-stage inner rod and a first-stage sleeve are connected between an outer cover and an inner cover, a lower piston is elastically supportedby a first-stage spring in a second-stage sleeve, so that the first-stage inner rod connected with an upper piston is supported, and direct operation of the inner cover through the outer cover is avoided; a limiting bolt corresponding to a limiting flange is circumferentially connected to a second-stage inner rod, a sliding sleeve and a traction rod are elastically supported by a second-stage spring, so that the circumferentially opened limiting bolt abuts against the limiting flange, the cover body is limited in the bottle body, and the bottle body is prevented from being opened easily; through the gas or liquid medium sealed between the first-stage sleeve and the second-stage sleeve, indirect extrusion of a first-stage sliding rod to a second-stage sliding rod is realized, and the support of the second-stage sliding rod to a limiting ring is realized by utilizing the operation difficulty and the degree of extrusion, so that it is guaranteed that the limiting bolt is easily contained.

The invention discloses a novel grid safety telescopic fence, which structurally comprises supporting rods, tenon-and-mortise fast connecting structures, connecting seats, fixing supporting devices and telescopic fences. The tenon-and-mortise fast connecting structures are arranged on the top end faces of the supporting rods, then force is applied to connecting pieces, the connecting pieces driveclamping blocks on fixing pieces and clamping grooves in connecting blocks to be matched in a clamped mode, and clamping blocks on fixing pieces at the other ends of the connecting pieces are connected with an outside guardrail; quick connecting and placement are conducted according to the fence shape needing to be placed for a grid, and the fences are movably connected; and the fixing supportingdevices are arranged on the bottom end faces of the connecting seats, then pull force is applied to inserting cones, and the inserting cones rotate to the vertical positions from the interiors of grooves through rotating shafts to be inserted into the ground for fixing.

The invention relates to the technical field of cold storage of medical drugs, in particular to a multifunctional medical refrigerator. The multifunctional medical refrigerator comprises a box, an airpump arranged at the top of the box, and a plurality of wheels arranged at the bottom of the box. A refrigeration chamber and a cold storage chamber are sequentially arranged in the box. A pluralityof first supporting frames are horizontally arranged in the refrigeration chamber from top to bottom. A condensation pipe is laid in the refrigeration chamber. The air inlet end of the condensation pipe communicates with the output end of the air pump. A fixing rod is tightly welded to the inner wall of the top of the cold storage chamber. A plurality of drug storage racks are arranged at the bottom of the fixing rod. According to the multifunctional medical refrigerator, the air pump and a motor are powered on by an external power supply to achieve air refrigeration in the refrigeration chamber and rotation of refrigeration pipes, and then cold air is evenly output to achieve comprehensive refrigeration of medical drugs; and ultraviolet lamps can be powered on by the external power supplyto sterilize and disinfect the environment in the cold storage chamber, and thus, storage of the medical drugs is further facilitated; and the refrigerator is simple in structure, has various functions and can be popularized.

The invention discloses an abutting-locking type butterfly valve. The abutting-locking type butterfly valve comprises a valve body, a valve plate, a connection sleeve, a drive rod, a telescopic assembly and an abutting screw rod; the bottom of the connection sleeve is provided with a threaded channel; and the abutting screw rod penetrates through the threaded channel at the bottom of the connection sleeve in a threaded mode to abut against the lower end of a positioning block. According to the abutting-locking type butterfly valve, as the abutting screw rod can penetrate through the threaded channel at the bottom of the connection sleeve in the threaded mode to abut against the lower end of the positioning block, the positioning block can be connected with the connection sleeve more firmlyin the longitudinal space, the positioning block can be positioned in the longitudinal direction, and thus a telescopic barrel and the connection sleeve can be more firmly connected in a clamped mode.

The invention discloses a kitchen and bath waste processor. The kitchen and bath waste processor comprises a grinding box and a filtering box, the bottom of the grinding box is provided with a first discharging pipe, the bottom of the filtering box is provided with a second discharging pipe, one end of the first discharging pipe is provided with a U-shaped pipe, one end of the U-shaped pipe is provided with a material exhausting pipe, the top of the grinding box is provided with a first feeding port, the top of the filtering box is provided with a second feeding port, the inner wall of the grinding box is provided with a bearing plate, the surface of the bearing plate is provided with a plurality of through holes in a penetrating mode, the interior of the grinding box is provided with a movably connected mounting frame in a matched mode, a motor is arranged in the mounting frame in a matched mode, a rotary rod is arranged at the position, below the mounting frame, of the output shaft of the motor, the rotary rod is sleeved with a first knife disc, a second knife disc and a third knife disc, a rotary disc is arranged at the position, above the bearing plate, of the bottom of the rotary rod, the inner wall of the filtering box is provided with a filtering bin in a matched mode, the front side and the rear side of the top of the filtering bin are symmetrically provided with pulling rods, and a handle is arranged on the part, extending to the position above the filtering box, of the tops of the pulling rods. The kitchen and bath waste processor can grind waste more thoroughly,can filter liquid waste, prolongs the service life of the knife discs, and is convenient to clean.

The invention discloses distance measuring equipment for a laser distance measuring sensor. A screw rod is arranged on the end face of a preassembled block; embedding grooves are formed in the upper end and the lower end of the pre-assembled block, and the embedding grooves are matched with the embedding blocks; clamping grooves are formed in the two sides of the base; buckles are arranged on the two sides of the lower end of the sliding block; the screw rod is inserted into a threaded hole in the front end of the sensor shell. The invention discloses distance measuring equipment of a laser distance measuring sensor, and belongs to the field of laser distance measuring sensors. And the screw rod is inserted into a threaded hole at the front end of the sensor shell to realize the connection between the preassembled block and the sensor shell. The embedding grooves in the upper end and the lower end of the pre-assembling block are matched with the embedding blocks arranged on the upper wall and the lower wall of the pre-assembling groove, so that preassembling block can achieve limiting of the preassembling block; after the buckle is inserted into the clamping groove, fixed connection between the sliding block and the base is achieved, then rapid assembling between the preassembling block and the sliding block and between the preassembling block and the base is achieved, and thereby rapid installation between the base and the sensor shell is completed.

The invention discloses a lamination diaphragm covering device and a film covering and tension detecting process thereof. The lamination diaphragm covering device comprises a linear module, a film covering mechanism and a film guiding mechanism. The linear module is horizontally arranged below a diaphragm unwinding mechanism. The film guiding mechanism is arranged on the side wall of the linear module. The film covering mechanism is slidably connected to the bottom of the linear module. The film covering mechanism comprises a driving assembly and a detection film pressing assembly. The driving assembly is connected to the bottom of the linear module. The detection film pressing assembly is connected to the driving assembly. The detection film pressing assembly automatically presses a diaphragm extending downwards from the film guiding mechanism, and when the linear module drives the detection film pressing assembly to linearly move back and forth on a lamination platform, the detection film pressing assembly detects the acting force generated by pulling of the diaphragm from the left side and the right side in real time. According to the invention, circulating and uninterrupted Z-shaped film covering of a strip-shaped diaphragm is realized through automatic flexible clamping of the diaphragm, and the film covering flatness is effectively ensured through film covering surface detection, real-time detection of internal tension of the diaphragm and arc-shaped swing type film drawing adjustment.

The invention discloses a sealed dismounting type blood collection device which comprises an air bag, a connecting tube, a floating driving mechanism, a blood collection assembly and a regulating assembly, wherein the upper end and the periphery of the connecting tube are sealed; the lower end of the connecting tube is provided with an opening; and the blood collection assembly comprises an upperblood collection tube, a connecting ring, a sealing ring, a conical elastic ring film, a lower blood collection tube, a sealing internal threaded ring, a sealing abutting and pressing ring, a sealingring and a clamp connection sealing ring. The sealing internal threaded ring arranged on the periphery of the lower side of the bottom of the conical elastic ring film is screwed onto an external threaded ring arranged at the upper end of the lower blood collection tube through screw threads; the sealing abutting and pressing ring arranged on the periphery of the inner side of the bottom of the conical elastic ring film is tightly abutted against the upper end surface of the sealing ring arranged in a sealing ring groove; and the conical elastic ring film is embedded into a clamp connection sealing groove clamped and connected in the periphery of the lower end of the connecting ring in a sealed way through the clamp connection sealing ring arranged on the periphery of the upper end of theconical elastic ring film, so that the sealing performance is ensured when the movable connection of the conical elastic ring film and the lower blood collection tube is realized, and the replacementof the conical elastic ring film is more convenient.

The invention relates to a manufacture method for silicon rubber synthetic insulators and an umbrella slice sleeving machine, belonging to the technical field of insulator production. The method comprises the steps of preparing a rubber rod and sleeving umbrella cluster umbrella slices on the rubber rod, and is characterized in that a rubber rod sleeve is prepared, and the rubber rod is put in the rubber rod sleeve; the umbrella cluster umbrella slices are well arranged in umbrella slice dies, and the rubber rod sleeve is drawn out from an umbrella cluster; the rubber rod sleeve drives the rubber rod to a set position, stops the rubber rod from moving on and is separated from the rubber rod, and the umbrella cluster umbrella slices slide on the rubber rod to finish the positioning fixation of the umbrella cluster umbrella slices and the rubber rod. The umbrella slice sleeving machine is simple and convenient to operate, is easy to learn, has high production efficiency and rate of finished products, good product quality, simple structure and convenient use, the umbrella slice dies are arranged on a stand, the rubber rod sleeve, a traction rod and a rubber rod motion limit block are arranged corresponding to the umbrella slice dies, and the rubber rod sleeve and the traction rod are movably connected.

The invention discloses portable hydraulic steel bar cutting-off equipment for constructional engineering. The portable hydraulic steel bar cutting-off equipment comprises an electric hydraulic pushing mechanism and a steel bar fixing and cutting-off mechanism; a cutting-off tool is installed in a cutting-off tool installation groove in the forward direction, and when a check block is installed onthe side face of a first half clamping block in an inserted mode through a T-shaped inserting block, a tool bit faces a second half clamping block; a push broach head is installed on a steel bar pushing block, the steel bar pushing block is pushed to move through a telescopic end of an electric hydraulic push rod, and the push broach head and a tool bit of the cutting-off tool cut off a steel bar; when the cutting-off tool is reversely installed in the cutting-off tool installation groove and the check block is detached from the side face of the first half clamping block, the tool bit is placed in a tool bit placing groove, the plane of an installation block faces the second half clamping block, the push broach head is detached from the steel bar pushing block, and the steel bar pushing block is pushed to move through the telescopic end of the electric hydraulic push rod; and the steel bar is pushed to the plane of the installation block, at the moment, the steel bar cannot be cut off, the steel bar can only be bent, and the using function is increased.

The present invention discloses an inclinable power cable rack support device. The device comprises: a pedestal mechanism, wherein the pedestal mechanism comprises a rectangular base plate and vertical plates arranged at left and right sides of the base plate; a fixed mechanism comprising two fixed rods vertically arranged at the upper portions of the vertical plates front and back, wherein the outer side ends of the fixed rods and two ends of the vertical rods are respectively provided with tilt levers with equal lengths; a driving mechanism comprising cylinders respectively arranged at the upper ends of the fixed rods; and a bearing mechanism comprising two bearing bodies arranged front and back, wherein each bearing body comprises one U-shaped rack with the direction being consistent tothe extension direction of each vertical plate, and each U-shaped rack comprises one horizontal portion and two vertical portions arranged at two sides of the horizontal portion, the center positionof each vertical portion is provided with one circular-arc groove, one roller is arranged between two ends of each two vertical portions, and the rollers are rotationally connected with the vertical portions. The inclinable power cable rack support device is simple in structure and convenient to carry, saves time and labor, and reduces labor intensity.

The invention discloses a glass fiber reinforced plastic cable bridge and a cover plate fastening device thereof. The fastening device comprises a sleeve, one end of the sleeve is fixedly connected with a first sealing plate, the first sealing plate is fixedly connected with a rubber pad, the rubber pad makes contact with the cable bridge, and the top of the cable bridge is provided with a cover plate; a second sealing plate is fixedly connected to the end, away from the first sealing plate, of the sleeve; a movable opening is formed in one side of the sleeve; a movable block is arranged at the position, close to the movable opening, in the sleeve; a fixed block is fixedly connected to the middle of the movable block; a moving block is arranged on the side, close to the fixed block, of themovable block; one side of the movable block is in threaded connection with a first screw rod, one end of the first screw rod is connected with the first sealing plate through a first movable mechanism, the other end of the first screw rod penetrates through the second sealing plate, and a pushing block is arranged on the side, away from the movable opening, in the sleeve. The cable bridge has the beneficial effect that the cover plate can be fastened on the cable bridge.

The invention provides an intelligent flexible driving device integrating distributed sensing and cooperating with actuating units, and application. The driving device sequentially comprises an outerlayer, a secondary outer layer, a middle layer, a secondary inner layer and an inner layer from outside to inside, wherein the outer layer uses a wear-resistant high-intensity hard flexible material;the secondary outer layer is adhered and connected to the outer layer, and is made of a flexible material with high ductility; a plurality of actuating units and multifunctional sensing units in arrayarrangement are embedded in the middle layer; the multifunctional sensing units are sequentially and alternatively arranged to form a sensing unit array; the plurality of actuating units form an actuating unit array; the actuation and sensing isotropy of the driving device is ensured; the secondary inner layer is tightly matched with the middle layer, and is made of a flexible material with highductility; the inner layer is made of an elastic material softer than the outer layer; and when the actuating units deform, the stress nonuniformity at two sides of the actuating units can cause deformation of the inner layer, so that a driven object is driven to move.

The invention discloses an automatic pin inserting machine. The automatic pin inserting machine comprises a base, a first discharging mechanism, a second discharging mechanism, a conveying mechanism and a pin material seat, wherein the first discharging mechanism and the second discharging mechanism are both provided with discharging channels for falling pins, and the conveying mechanism is provided with a material inserting piece used for inserting the pins into the pin material seat; and the discharging seat is provided with a first discharging port, a second discharging port, a first switchpiece capable of opening or closing the first discharging port and a second switch piece capable of opening or closing the second discharging port. The positions and the orientations of the pins discharged through the first discharging port, the second discharging port and the discharging channels of the second discharging mechanism are different; and through the arrangement of the first switch piece and the second switch piece, the opening or closing of the first discharging port and / or the second discharging port can be controlled, so that the discharging of the pins at different positionsand with different numbers is controlled, the automatic pin inserting machine can be conveniently adapted to sockets with different specifications for pin inserting, the application range is wide, andthe processing cost is reduced.

The invention relates to the technical field of color plate coating, and discloses a coating process of a multi-color plate. The coating process comprises the following steps of (S1) pretreatment, (S2) roller coating of a primer layer, (S3) roller coating of a middle coating, (S4) roller coating of a finish paint layer, and (S5) final treatment, wherein the coating process of the finish paint layer comprises the steps of (a) coloring for the first time: coating first paint to the surface of a color plate, and then drying; (b) coloring for the second time: coating second paint to the surface ofthe color plate, and then drying; and (c) coloring for many times: coating nth paint to the surface of the color plate, and then drying. The step (S4) relates to a plurality of roller coaters, coating rollers which are used for transferring the paint to the color plate are respectively arranged on each roller coater, the coating rollers comprise coating areas and sunken areas, the coating areas are abutted with the color plate, different coating areas are different from each other, and the sum of the widths of all of the coating areas is equal to the width of the color plate. According to thecoating process, roller coating of different colors is performed in different areas of the color plate by utilizing the plurality of roller coaters, so that the processing of the multi-color plate isrealized, the sense of art and applicability of the color plate are increased, and the diversified customer requirements are met.

The invention relates to a processing technology of a pin type composite insulator. The processing technology comprises the following steps of respectively processing a required insulating pin body, an upper fitting, a lower fitting and a grading shield; feeding the processed insulating pin body into injection equipment, respectively arranging a blocking plug at two sides of the insulating pin body during injection in a sleeving manner, blocking openings at two sides of an umbrella skirt injection cavity, starting injection and performing vulcanization molding to form an umbrella skirt; feeding the insulating pin body with the umbrella skirt to a special assembly system for assembling; and feeding the assembled pin type composite insulator into a storage system for storing, thereby finishing processing. The processing technology disclosed by the invention has the advantages that during injection, the openings at two sides of the umbrella skirt injection cavity are blocked by utilizingthe blocking plugs, the condition that partial silicone rubber flows out of the openings and forms excessive rubber sleeves on the insulating pin body due to excessive pressure is avoided, and only the blocking plugs need to be removed during subsequent treatment, so that the processing technology is very convenient.

The invention provides a turnout assembly. The turnout assembly comprises: a first track and a second track; a first connecting seat which is arranged on the first track; a second connecting seat which is arranged on the second track and is movably connected with the first connecting seat; a third connecting seat which is arranged on the second track; and a rotating seat which is rotationally connected with the third connecting seat, wherein the third connecting seat can rotate relative to the rotating seat. According to the turnout assembly provided by the invention, the third connecting seat is connected with the second track and is rotationally connected with the rotating seat, so that the second track is rotationally connected with the rotating seat; and through the first connecting seat is connected to the second connecting seat, so that the first track is movably connected with the second track, when the second track switches, the first track can be driven to move, the second track can be stably connected with the first track, and the overall structure of the turnout is simplified.

The invention discloses a maintenance-free fully-preventive floor drain, comprising a hollow floor drain core, wherein a seal plate for spacing the upper and lower parts of the floor drain core is arranged in the floor drain core, a water outlet is arranged on the seal plate, a water retaining structure is arranged below the seal plate and comprises a lever, a rotating shaft used as a lever fulcrum, a clump weight arranged at one end of the lever and a water-retaining plate arranged between the water outlet and the other end of the lever, the water-retaining plate is in rotary connection with the rotating shaft and is used for seal fit with the water outlet, and the moment of the clump weight is greater than the moment of the water-retaining plate. The invention aims at providing the maintenance-free fully-preventive floor drain which is capable of thoroughly solving the problem of hair fiber accumulation, has good seal effect and prevents blow-by.

The invention discloses a medicine bottle locking structure for preventing accidental opening by children, which comprises a cover body and a bottle body. In the present invention, a double-layer cover is provided, and a first-level inner rod and a first-level sleeve are connected between the outer cover and the inner cover, and the lower piston is elastically supported by a first-level spring in the second-level sleeve to support the upper piston The first-level inner rod provides support to avoid direct operation of the inner cover through the outer cover; by connecting the limit bolt corresponding to the limit flange on the circumference of the second-level inner rod, the sliding sleeve and the traction are controlled by the second-level spring. The rod is elastically supported, so that the circumferentially opened limit bolt is against the limit flange, so as to limit the cover in the bottle body and prevent the bottle body from being easily opened; The gas or liquid medium that is sealed between them can realize the indirect extrusion of the primary sliding rod to the secondary sliding rod, and realize the support of the secondary sliding rod to the limit ring by using the operation difficulty and degree of extrusion, so as to ensure the limit bolt Easily accommodated.