101results about How to "Location restrictions" patented technology

The invention discloses a cardiopulmonary cerebral resuscitation rescue device for the emergency department. The device comprises a treatment table, a pad block is fixedly arranged at the top of the treatment table, and grooves with openings in the tops are formed in the two sides of the pad block; a same rotation shaft is rotatably arranged on the inner walls of the two sides of each groove, aslant-arranged neck protection plates are fixedly arranged at the outer sides of the rotation shafts, and sliding grooves are formed in the inner walls of the bottoms of the grooves; pushing plates and sliding plates are slidingly arranged in the sliding grooves, the two pushing plates are located between the two sliding plates, and sliding rods are welded to the sides, away from each other, of the two pushing plates; the sliding plates are located below the sliding rods, sliding blocks are slidingly arranged at the outer sides of the sliding rods, and sliding rod holes are formed in the sides ofthe sliding blocks. The cardiopulmonary cerebral resuscitation rescue device for the emergency department is high in practical performance, simple in structure and convenient to operate, the positionof the neck of a patient is conveniently limited, the force of clamping the neck can be adjusted, the neck is prevented from moving, and the device helps medical personnel to treat the patient.

The invention relates to glasses and a method for detecting myopic number of degrees, belonging to the technical field of vision detection. A first mirror body and a second mirror body in the glassesare connected to form an accommodating cavity in a front-back sliding manner, an elastic transparent airbag is arranged in the accommodating cavity, two sides of the elastic transparent airbag are respectively fit with the first mirror body and the second mirror body, and a liquid injection transmission mechanism for injecting focusing liquid into the elastic transparent airbag and adjusting the volume of the accommodating cavity is arranged in a mirror bracket. The glasses have the beneficial effects that the first mirror body, the second mirror body and the elastic transparent airbag filledwith the focusing liquid are taken as an equivalent concave lens, the distance between the first mirror body and the second mirror body is adjusted through changing the volume of the focusing liquid in the elastic transparent airbag, and the required number of degrees of the glasses is determined according to the position of the liquid injection transmission mechanism, so that the detection of thenumber of the degrees is accurate and continuous, the operation process is convenient and rapid, the detection cost is low, the detection of the number of the degrees can be finished by one people, the glasses can meet the current configuration demands of myopic glasses, and the configuration cost is lowered.

The invention discloses an intelligent electric self-service system. The intelligent electric self-service system comprises a hardware platform and a software platform, the hardware platform comprisesan external system, a self-service terminal hardware system, an internet, a safe separating wall and a safety door. The self-service terminal hardware system comprises a self-service terminal mainframe, a high-definition display screen, a touch screen, a fingerprint instrument, a human body infrared sensing instrument and a bar code scanning device, wherein the high-definition display screen, thetouch screen, the fingerprint instrument, the human body infrared sensing instrument and the bar code scanning device are connected with the self-service terminal mainframe, a base is arranged belowthe touch screen, a stand column is connected to the top of the base, an installing hole is formed in the top end of the stand column, a supporting rod is movably installed in the installing hole, thetop end of the supporting rod extends to the portion above the stand column and is connected with a U-type base, and a rotating disc is rotatably installed inside the U-type base. The intelligent electric self-service system is reasonable in design and convenient to adjust, a control worker can adjust the height and inclination angle of the touch screen according to own body height, and conveniently controls the touch screen, and usage is easy.

The invention discloses a mobile environmental gas detector. The detector comprises a detector body, pull handles are arranged on the two sides of the top of the detector body, the bottoms of the pullhandles penetrate into the detector body, storage grooves are formed in the bottoms of the two sides of each pull handle, handles are arranged on the two sides of the detector body, and connecting rods are fixedly connected to the sides, close to the detector body, of the handles. According to the invention, the detector body, the pull handle, the storage grooves, the handles, the connecting rodsand the clamping plate are used in cooperation, so that a problem that a handle of an existing movable environment gas detector does not have a height adjusting function and thus a user cannot adjusta handle according to the height of the user, so that the user who is too high needs to bend down to move the mobile environmental gas detector is solved. With the mobile environmental gas detector,the height of the handle can be adjusted, and the detector is convenient for the user to use.

The invention discloses a loudspeaker device, comprising an external frame and a loudspeaker component. A rotating slot with an upward entrance and a clamping slot of which entrance faces the rotating slot are arranged in the external frame. A rotating disk is rotationally mounted in the rotating slot through a rotating bearing. A middle end slot is arranged at a middle end of the rotating disk. A rise and fall arm is mounted in the middle end slot based on a sliding mode. An internal spiral hole with downward entrance is arranged in the rise and fall slot. A rise and fall spiral rod is mounted in the internal spiral hole through thread matching. A rotating middle end shaft is rotationally mounted at a lower end of the middle end slot through the rotating bearing. The upper end of the rotating middle end shaft is fixedly connected with the rise and fall spiral rod. The lower end of the rotating middle end shaft stretches to the clamping slot and is fixedly mounted with an upper rotating tooth-shaped wheel. An internal tooth edge is fixedly mounted at a bottom end of the clamping slot. A vertical side sliding cavity stretching along a vertical side is arranged in the rotating disk. A sliding frame is mounted in the vertical side sliding cavity based on the sliding mode. A rise and fall motor is fixedly mounted in the sliding frame.

The invention discloses an effective loudspeaker device, which comprises an external frame and a loudspeaker component. A rotating slot with an upward entrance and a clamping slot whose entrance faces the rotating slot are arranged in the external frame. A rotating disk is rotationally mounted in the rotating slot through a rotating bearing. A middle end slot is arranged at a middle end of the rotating disk. A rise and fall arm is mounted in the middle end slot in a sliding mode. An internal spiral hole with a downward entrance is arranged in the rise and fall arm. A rise and fall spiral rod is mounted in the internal spiral hole through thread matching. A rotating middle end shaft is rotationally mounted at a lower end of the middle end slot through the rotating bearing. The upper end of the rotating middle end shaft is fixedly connected with the rise and fall spiral rod. The lower end of the rotating middle end shaft stretches to the clamping slot and is fixedly mounted with an upper rotating tooth-shaped wheel. An internal tooth edge is fixedly mounted at a bottom end of the clamping slot. A vertical side sliding cavity stretching along a vertical side is arranged in the rotating disk. A sliding frame is mounted in the vertical side sliding cavity in the sliding mode. A rise and fall motor is fixedly mounted in the sliding frame.

The present invention belongs to the field of molecular biology technology, and provides PCR process with two groups of homologous primers and its reaction liquid. In the PCR process, two groups, including one forward group and one reverse group, of homologous primers, designed based on the identical segment of known destination gene are used. Each of the groups includes 1-3 primers with 0-3 template mismatching bases and length difference of 0-10 nucleotides. In the genes, 5' starting positions differ by 0-10 nucleotides. Owing to designing the primer groups strictly based on the known tested sequence, the present invention can reduce or even eliminate the false negative in homologous gene PCR detection and thus has wide application foreground in preparing nucleic acid detecting reagent for medical microbes, such as virus, bacteria, etc.

A convenient food drying device, including a frame and a drying plate element, the frame is provided with a turning groove with an upward opening and a fixing groove with an opening facing the turning groove, and the steering bearing in the turning groove can A steering wheel is installed in a turning direction, and a middle groove is arranged at the middle of the steering wheel, and a undulating arm is smoothly installed in the middle groove, and an internal screw-shaped hole with an opening downward is arranged in the undulating arm, and the internal screw An undulating screw-shaped rod is installed in the threaded hole, and the lower end of the middle groove is steerably installed with a steering middle shaft through a steering bearing. The upper end of the steering middle shaft is fixedly connected with the undulating spiral rod. The lower end extends into the fixing groove and is fixedly installed with the upper steering tooth cone, the bottom of the fixing groove is fixedly installed with internal teeth, and the steering wheel is also provided with a vertically extending vertical smoothing cavity, which is vertically smooth A smooth frame is also smoothly installed in the cavity, and a heave drive machine is fixedly installed in the smooth frame.

The invention discloses an LED display screen full-color degree uniformity device, and relates to the technical field of LED display screens, in particular to an LED display screen full-color degree uniformity device. The device comprises a bottom cabinet and a red, green and blue LED array; a position limiting mechanism is installed above the bottom cabinet, and a frame is installed above the position limiting mechanism. A notch is formed in the front end of the bottom of the inner wall of the frame, a USB interface is formed in the notch, the red, green and blue LED array is located at the front end of the frame, and air guide mechanisms are installed on the left side and the right side of the rear end of the frame. The LED display screen full-color uniformity device is provided with theposition limiting mechanism, the linear lead screw motor pushes the lead screw guide sleeve to move in the direction of the horizontal center line of the containing frame through the adjusting lead screw, the pressing plates are close to each other through symmetrical distribution of the pressing plates, the pressing plates apply a clamping force to the frame, so the position of the frame can beeffectively limited, and the convenience of assembling and disassembling the frame can be effectively improved.

The invention discloses a discharging device of a laser cutting machine. The discharging device comprises a bottom plate, two first telescopic devices, two parallel rods, a connecting cross rod and a telescopic rod. Two side plates arranged in parallel are fixed to the bottom plate. The two first telescopic devices are fixed to the opposite side faces of the two side plates correspondingly. The two parallel rods are fixed to the two first telescopic devices correspondingly. The connecting cross rod is fixed between the two parallel rods. The connecting cross rod is provided with a telescopic groove with a downward opening, and the telescopic rod is installed in the telescopic groove and can move up and down relative to the telescopic groove. According to the discharging device of the laser cutting machine, after machining is completed, the first telescopic devices drive the connecting cross rod through the parallel rods to move above a plate, the telescopic rod is partly moved out of the telescopic groove, then the first telescopic rod drives the connecting cross rod to be folded, the telescopic rod drives the plate on a platform to move towards the side of the bottom plate in the folding process, and therefore the plate is pushed out of the platform, and discharging is completed.

A food sun-drying device comprises a rack and a sun-drying plate component, wherein a turning groove with an upward opening end and a mounting-fixing groove with an opening end facing the turning groove are formed in the rack, a turning disc is mounted in the turning groove in a turnable way by a turning bearing, the middle of the turning disc is provided with a middle groove, a fluctuating arm is mounted in the middle groove in a smooth-sliding way, an inner spiral hole with a downward opening end is formed in the fluctuating arm, a fluctuating spiral rod is mounted in the inner spiral hole by screw thread fit, a turning middle shaft is mounted at the lower end of the middle groove in the turnable way by a turning bearing, the upper end of the turning middle shaft is fixedly connected with the fluctuating spiral rod, the lower end of the turning middle shaft extends into the mounting-fixing groove, and is fixedly provided with an upper turning tooth wheel, the bottom end of the mounting-fixing groove is fixedly provided with inner teeth, a vertically extended vertical smooth-sliding cavity is further formed in the turning disc, a smooth-sliding frame is further mounted in the vertical smooth-sliding cavity in the smooth-sliding way, and a fluctuating drive machine is fixedly mounted in the smooth-sliding frame.

The invention provides a method and system for measuring narrow gap welding temperature fields. The method comprises the following steps: cutting off a test board into two parts in a narrow gap welding bead direction perpendicular to the test board, wherein one part comprises a projection which extends out along a welding bead and stretches across the welding bead; burying at least one heat induction device towards a heat affected zone of the welding bead and on at least one side vertical face of the projection in the welding bead direction; piecing the two cut parts together to obtain the test board of the heat induction devices buried in the heat affected zone; welding the welding bead of the test board layer by layer according to the preset test pre-arranged planning; and measuring change conditions of temperature fields of the heat affected zone according to the acquired temperature information of the various heat induction devices in a test process. By the method and system for measuring the narrow gap welding temperature fields, electric arc generated on cracks of the welding bead can be effectively prevented from affecting the temperature information induced by the heat induction devices in a welding process, and therefore, the shortcoming that the temperature of the heat affected zone cannot be measured directly by the heat induction devices can be overcome.

The invention discloses a loudspeaker device, which comprises an external frame and a loudspeaker component. A rotating slot with an upward entrance and a clamping slot whose entrance faces the rotating slot are arranged in the external frame. A rotating disk is rotationally mounted in the rotating slot through a rotating bearing. A middle end slot is arranged at a middle end of the rotating disk. A rise and fall arm is mounted in the middle end slot in a sliding mode. An internal spiral hole with a downward entrance is arranged in the rise and fall arm. A rise and fall spiral rod is mounted in the internal spiral hole through thread matching. A rotating middle end shaft is rotationally mounted at a lower end of the middle end slot through the rotating bearing. The upper end of the rotating middle end shaft is fixedly connected with the rise and fall spiral rod. The lower end of the rotating middle end shaft stretches to the clamping slot and is fixedly mounted with an upper rotating tooth-shaped wheel. An internal tooth edge is fixedly mounted at a bottom end of the clamping slot. A vertical side sliding cavity stretching along a vertical side is arranged in the rotating disk. A sliding frame is mounted in the vertical side sliding cavity in the sliding mode. A rise and fall motor is fixedly mounted in the sliding frame.

The invention discloses a test tube rack for chemical engineering. The test tube rack comprises a base, wherein a water storage chamber is arranged in the base, a drain pipe is arranged on one side surface of the water storage chamber, equidistantly queued first water diversion holes are formed on top of the water storage chamber, the top of the base is fixedly connected with two symmetrical support columns, each of the side surfaces of the two support columns close to each other is fixedly connected with a cylindrical first connecting rod, a base plate is arranged just above the water storage chamber, equidistantly queued positioning grooves are formed on top of the base plate, a rubber pad is arranged in each positioning groove, and the top of the base plate is fixedly connected with two symmetrical upright columns. The test tube rack for chemical engineering effectively avoids corrosion or damage of the test tube rack, effectively avoids pollution of a laboratory, has faster airing speed, high safety performance and good airing effect, and effectively avoids collision or dropping of test tubes, thereby effectively solving the problems of unreasonable discharge of water and easy collision of test tubes when the test tubes are turned over and aired.

The invention discloses a cable bridge capable of achieving a cable partitioning function. The cable bridge comprises a cross-shaped fixing frame, a mounting structure, a limiting structure and a fixing structure, wherein the middle of the cross-shaped fixing frame is provided with fixed wire slots in a bilateral symmetry manner; a bottom plate is mounted on the lower surface of the cross-shaped fixing frame; sliding groove plates are arranged at the left end and the right end of the upper surface of the bottom plate in a front-back symmetry manner, sliding strips are slidably connected into the sliding groove plates, the upper surfaces of the two sliding strips corresponding front and back are fixedly connected with the lower surfaces of movable wire slots, and connecting holes are evenlyformed in the opposite outer side faces of the front ends of the two fixed wire slots and the opposite outer side faces of the front ends of the two movable wire slots; the mounting structure is arranged at the upper end of the cross-shaped fixing frame in a front-back symmetry manner. According to the cable bridge capable of achieving the cable partitioning function, cables can be partitioned, the position of the cable bridge can be adjusted conveniently, the cables in the movable wire slots can be maintained and replaced conveniently, and the cables can be fixed conveniently.

The invention discloses an intelligent electric power self-service system. The intelligent electric power self-service system comprises a hardware platform and a software platform; the hardware platform comprises an external system, a self-service terminal hardware system, an internet, a safety isolation wall and a safety door; the self-service terminal hardware system comprises a self-service terminal main machine, and a high-definition display screen, a touch screen, a fingerprint instrument, a human body infrared inductor and a bar code scanning device connected with the self-service terminal main machine; a base is arranged under the touch screen; the top of the base is connected with a stand column; a mounting hole is formed in the top end of the stand column; a support rod is movablymounted in the mounting hole; the top end of the support rod extends above the stand column, and is connected with an U-shaped base; and a rotating disc is rotationally mounted in the U-shaped base.The intelligent electric power self-service system is reasonable in design and convenient to adjust; and controllers can adjust the height and the inclined angle of the touch screen according to own heights, so that the controllers conveniently control the touch screen to achieve use.

The invention discloses a radiotherapy body position correcting instrument, and belongs to the field of medical equipment. The radiotherapy body position correcting instrument comprises a radiotherapybed, wherein guide rods are fixedly welded to the upper ends of the two sides of the radiotherapy bed. According to the radiotherapy body position correcting instrument, a hydraulic cylinder is started to drive a movable plate to move longitudinally, the height of a bed body is convenient to adjust, and a radiotherapy person can conveniently move to the upper end face of the bed body through thedesign of the hydraulic cylinder; a second motor is started to drive a gear to rotate, and therefore a moving bed is driven to move; the position of the radiotherapy person is convenient to adjust through the design of a tooth row, and therefore accurate positioning is facilitated, and chemotherapy is facilitated; the comfort of the radiotherapy person can be improved through the design of an arc-shaped structure, and the position of the radiotherapy person can be limited; the purpose of accurate positioning can be achieved through the design of arrows and scale marks; a handle is moved upwards to drive a garbage can and a clamping block to move upwards, the clamping block is separated from constraint of a clamping groove, and the garbage can is convenient to move towards one side to be disassembled; and vomit, generated by radiotherapy reaction, of the radiotherapy person can be contained through the design of the garbage can, and environmental sanitation is improved.

The invention discloses an intelligent electric self-service system. The system comprises a hardware platform and a software platform; the hardware platform comprises an external system, a self-service terminal hardware system body, an internet, a safety barrier and a safety door; the self-service terminal hardware system body comprises a self-service terminal main machine, a high-definition display screen, a touch screen, a fingerprint device, a human body infrared sensor and a barcode scanning device, wherein the high-definition display screen, the touch screen, the fingerprint device, the human body infrared sensor and the barcode scanning device are connected to the self-service terminal main machine; a base is arranged below the touch screen, the top of the base is connected with a column, a mounting hole is formed in the top of the column, a support rod is movably mounted in the mounting hole, the top of the support rod extends to the top of the column and is connected with a U-shaped seat, and a turntable is rotatably mounted in the U-shaped seat. The intelligent electric self-service system is reasonable in design and convenient to adjust, an operator can adjust the heightand tilt angle of the touch screen according to his / her height, and convenience is provided for the operator to operate and use the touch screen.

The invention discloses a socket with a rotatable outgoing line, relates to the technical field of strip line converters, and aims to solve the problem that sundries easily enter a shell due to the fact that a gap exists at a line outlet hole in the socket in the prior art. The socket comprises a shell, and the shell being provided with a wire outlet hole which is a strip-shaped through hole; a power line, extending into the shell through the line outlet hole; a rotating support, rotationally arranged in the shell and close to the wire outlet hole, the rotating support being of a cylinder structure, a through hole being formed in the rotating support in the direction perpendicular to the axial direction of the cylinder, and the power line extending into the shell through the through hole;an elastic limiting assembly, used for preventing the rotating support from rotating at will. The socket is used for connecting electric appliances.

The invention discloses an interactive system and method for psychological robots, including an input module, a first processing module, a retrieval module, a second processing module, a selection module and a third processing module; Extract and analyze the input information to obtain keywords, match keywords with data in the database, conduct interactive conversations with users, and obtain a set of psychological characteristics questions, and then according to the user's choice in the set of psychological characteristics questions Psychological characteristics, use the cognitive behavioral model to analyze the situation of interactive questions and answers to obtain a consultation plan, and display it through the interactive interface; the effect is: simulate the psychological consultation process between the user and the consultant through the interactive method, and realize artificial intelligence. Intelligent psychological counseling has good privacy and is not limited by time and place. At the same time, counseling plans are given based on actual cognitive behaviors, which effectively improves the counseling effect.

The invention relates to the technical field of biological floating beds, in particular to a plant sewage treatment structure for outdoor ditches, which comprises a connecting plate and an adjusting device, a floating block is arranged on the side wall of the connecting plate, floating bags are movably connected to two sides of the connecting plate, the adjusting device is arranged on the surface of the floating block, the adjusting device comprises a sliding block, and the side wall of the sliding block and the side wall of an auxiliary floating block are fixedly mounted. An auxiliary device is arranged on the surfaces of the connecting plate and the floating bag and comprises a cushion block, the side wall of the cushion block and the side wall of the floating bag are fixedly installed, a connecting block is arranged at the position, close to the cushion block, of the upper surface of the connecting plate, a bird repelling device is arranged on the surface of the floating block and comprises a bearing, the bottom end of the bearing and the upper surface of the floating block are fixedly installed, and a rotating rod is arranged on the inner wall of the bearing. According to the floating block, the problems that when a traditional floating block is used, only floating blocks of the same specification are spliced together generally, the floating blocks cannot be spliced together when the specifications of the floating blocks used by some plants are different, splicing needs to be conducted again, and time and materials are wasted are solved.

The portable multifunctional support comprises a supporting frame and a straight triangular support rotationally connected with the supporting frame, the straight triangular support comprises a vertical plate and an inclined plate, a fixing hole is formed in the vertical plate and used for being fixed to a wall, a pasting film is arranged on the vertical plate and used for being pasted to the wall, and the inclined plate comprises a rotating part. The rotating part is rotationally connected with the supporting frame, the supporting frame is provided with a positioning assembly, the positioning assembly is used for limiting the position of the rotating part relative to the supporting frame, the rotating part is flush with the bottom face of the vertical plate, the bottom face of the supporting frame can be flush with the bottom face of the rotating part, and a hanging groove is formed in the supporting frame and used for hanging an air blower; through one support, use of multiple functions is achieved, the practicability and user experience of the support are improved, and the diversified daily requirements of users are greatly met.

The utility model discloses a polishing device for metal product processing, which comprises a main body, the top end of the main body is provided with a polishing mechanism, the bottom end of the polishing mechanism is provided with a carrying table, the top end of the carrying table is provided with a roller, the center position of the bottom end of the carrying table is provided with an electric push rod, and the electric push rod is arranged in the main body. Guide rods are installed on the two sides of the bottom end of the carrying table and penetrate through the interior of the main body. By arranging the carrying table, the rollers, the electric push rods and the guide rods, stable movement of metal products is achieved, the rollers are distributed at the top end of the carrying table at equal intervals and can rotate, the friction force of the bottoms of the metal products is reduced, and stable translation of the metal products is conveniently controlled; the carrying table can be controlled to move vertically, the distance between the carrying table and the grinding wheel is changed to adapt to metal products of different heights, and therefore the use flexibility is improved.

The invention provides a leg supporting device and an operating bed with the leg supporting device, and the leg supporting device comprises a base; the mounting part is arranged on the base; the mounting frame is slidably arranged on the mounting part, the mounting frame comprises a main body part, a first connecting arm and a limiting plate, and a first convex block matched with any one of the multiple positioning concave parts is arranged on the first connecting arm; the sliding piece comprises a handle part, a second connecting arm and a stopping piece, the stopping piece is arranged below the handle part, when the sliding piece is located at the unlocking position, the stopping piece avoids the first protruding block, and when the sliding piece is located at the locking position, the stopping piece is matched with the first protruding block in a stopping mode; a mounting concave part is arranged at the top of the mounting seat; the rotating piece is rotatably arranged in the mounting concave part; the driving piece is in driving fit with the rotating piece to drive the rotating piece to rotate; and the foot support piece is connected with the rotating piece. According to the technical scheme, the problem that in the prior art, the position adjusting operation difficulty of a leg support device is large is effectively solved.

The utility model relates to the technical field of centrifugal separators, in particular to a centrifugal separator for tartaric acid production, which comprises a centrifugal machine, a machine cover is detachably mounted on the surface of the centrifugal machine, a liquid inlet pipe is fixed and communicated to the surface of the machine cover, and a motor is fixedly connected to the surface of the centrifugal machine. A centrifugal barrel is rotatably connected to the inner wall of the centrifugal machine, the output end of the motor is fixedly connected with the centrifugal barrel, a cleaning structure is arranged on the surface of the centrifugal machine and comprises a supporting plate, the supporting plate is fixedly installed at the upper end of the centrifugal machine, and a fixing cover is fixedly connected to the upper surface of the supporting plate. According to the tartaric acid centrifugal machine, due to the arrangement of the cleaning structure, when tartaric acid needs to be separated, the brush strip and other components can be prevented from making contact with mixed liquor of the tartaric acid, and therefore it is guaranteed that the mixed liquor of the tartaric acid can be normally accelerated through the centrifugal barrel, and the centrifugal efficiency of the centrifugal machine is not affected.

The invention discloses a novel painless ultra-smooth antibacterial catheter which structurally comprises an air bag, a catheterization device, a catheter body, a sampling tube, a connecting tube, an inflation water injection tube and a urination catheter.When the novel painless ultra-smooth antibacterial catheter is used and when a doctor carries out intubation, a sleeving opening is matched with the catheter body and extends into the bladder through the urethra, normal saline is injected into the air bag through the inflation water injection tube, and the catheter body is inserted into the air bag through the urine injection tube; when catheterization is carried out, urine flows into the catheter body through the butt joint opening and makes contact with the flow slowing assembly, the flow slowing assembly plays a role in buffering and speed reduction on the urine, the urine can stably flow to the movable expansion piece in the catheter body under the action of the multiple inclined sliding plates, and therefore the catheter can be conveniently and rapidly guided. When the urine flows out, the movable expansion piece is opened downwards under the downward impact force of the urine, the urine flows to the guiding-out assembly along with the movable expansion piece, blood clots in the urine are treated through the guiding-out assembly, and the urine can be discharged outwards in time.

The invention relates to the technical field of molding sand crushing equipment, and particularly discloses a casting molding sand crushing and screening device which comprises a crushing mechanism and a screening mechanism, the screening mechanism is arranged below the crushing mechanism, a conveying mechanism is arranged below the screening mechanism, and the crushing mechanism comprises a first support, a shell, a side plate, a discharging hopper, a crushing knife roll and a grid plate. The screening mechanism comprises a second support, a limiting plate, a connecting rod, a screening basket and a servo telescopic rod, the conveying mechanism comprises a third support and an electric conveying belt, a worker can conveniently observe the operation condition of related parts in the crushing mechanism, so that when a crushing knife roll is blocked or damaged, the worker can respond in time, and the working efficiency is improved. According to the molding sand crushing and screening device, the fault removing efficiency is improved, components in the crushing and screening device are convenient to clean and maintain, crushed molding sand particles can be discharged from the lower portion of the crushing mechanism in time, coherence of molding sand crushing operation is guaranteed, and the molding sand crushing operation efficiency is improved.

The invention discloses a code scanner for logistics delivery and a use method, and relates to the technical field of code scanners, in particular to a code scanner for logistics delivery and a use method. The code scanner for logistics delivery comprises a column frame, a column sleeve is arranged in the column frame, an adjusting screw column is connected in the column sleeve in a penetrating manner, the input end of the adjusting screw column is connected with a stepping motor, a directional clamping mechanism is installed on one side of the column frame, and a code scanning auxiliary mechanism is installed above the directional clamping mechanism. The code scanner for logistics delivery and the use method are provided.