110results about How to "Increase squeeze" patented technology

The invention relates to the technical field of hardware machining, and discloses a drilling machine for precise hardware machining and a using method thereof.The drilling machine comprises a containing table, a connecting frame is fixedly connected to the top of the containing table, two clamping blocks are slidably connected to the top of the containing table, and an electric telescopic rod is started to push a sliding block to descend; when a workpiece is drilled, a rotating rod and a drill bit descend to be close to the workpiece, meanwhile, a motor is started to drive a second belt wheel to rotate, a transmission belt rotates, the rotating rod and the drill bit rotate to drill the workpiece, meanwhile, when the rotating rod rotates, a round ball rod can rotate around the center of a fixed circular ring, the round ball rod can incline, and a first connecting ring can be pulled by the round ball rod; the first connecting ring is moved downwards to descend, so that an extrusion ring descends, an extrusion plate descends, cooling liquid in a liquid storage tank is extruded, the extruded cooling liquid is sprayed out through a communicating hole to flush the surface of the drill bit, and therefore chippings attached to the surface of the drill bit are reduced, and the abrasion speed of the drill bit is effectively reduced.

The invention relates to the technical field of wire tighteners, in particular to an intelligent wire tightener and a wire tightening method thereof.The intelligent wire tightener comprises a main body, and a middle part is arranged in a wire tightening area between a first shell and a second shell of the main body; the upper end and the lower end of the middle part respectively press a wire rod middle part and a wire rod terminal part against the first shell and the second shell so as to fix the wire rod middle part and the wire rod terminal part; the middle part is connected with the U-shaped rib of the main body in a sliding mode and comprises a middle block, clamping blocks arranged at the upper end and the lower end of the middle block respectively and an inclined plate arranged in the middle block and located between the two clamping blocks. According to the wire tightener, even if the second shell is loosened due to the fact that the main body is aged and the like, it can be ensured that the wire middle part and the wire terminal part are kept in the state of being tightened and fixed by the main body, the situation that the wire middle part and the wire terminal part slip off from the main body cannot occur, and safety is guaranteed.

The invention relates to the technical field of sewage treatment and resource utilization, in particular to a sludge treatment system with an integrated microbial fuel cell and a treatment method of the sludge treatment system. A first cathode plate matched with the sludge compression chamber is arranged at the other end in the sludge compression chamber in a sliding mode, a driving mechanism used for driving the first cathode plate to be close to or away from the first anode plate is arranged on the sludge compression chamber, and a sludge discharge port is formed in the lower portion of the sludge compression chamber. The chlorine salt and the tannic acid are added into the sludge in the pretreatment barrel, the chlorine salt is used for improving the electrochemical wall breaking effect of the sludge, the tannic acid is used for improving the dewatering performance of the sludge and reducing the hydrothermal dewatering temperature, the chlorine salt and the tannic acid are mixed in the pretreatment barrel and then enter the fuel tank for chemical reaction, electric energy is generated, and electric power is provided for the storage battery; the microorganisms can degrade organic matters in the sludge.

The invention belongs to the technical field of solid waste material preparation, and particularly relates to a device for preparing a multi-element solid waste-based cementing material, the device comprises a preparation box, a grinding and crushing assembly is mounted in the preparation box, and the grinding and crushing assembly comprises a rotary mounting disc arranged in the preparation box; the differential requirements of multiple applications on the granularity of the solid waste-based cementing material can be accurately met, accurate-granularity products adaptive to different scenes are produced by conveniently switching the grinding discs, and compared with the traditional technology that if the granularity needs to be changed, shutdown, equipment disassembly and whole set of grinding parts need to be frequently carried out, the working procedures are tedious, consumed time is long, equipment idling is caused, and production is interrupted, the production efficiency is greatly improved. According to the device, complex disassembly is not needed, the switching process is started instantly when the servo motor rotates reversely, under the cooperation of the wedge-shaped limiting piece, the wedge-shaped groove and other assemblies, grinding disc switching is rapidly completed, follow-up production is rapidly connected, the downtime is shortened, the overall production efficiency is remarkably improved, and the continuous industrial production rhythm and the unit time yield can be improved.

The invention discloses a line design cable butt joint structure for electric power engineering, and relates to the technical field of cable butt joint, the line design cable butt joint structure comprises a butt joint cylinder, the two ends of the butt joint cylinder are provided with mounting mechanisms for placing inserted cables, each mounting mechanism comprises a placing cylinder, and the placing cylinders are symmetrically installed at the two ends of the butt joint cylinder; a limiting mechanism for fixedly limiting movement of the cable is arranged on the inner wall of the placing cylinder, an adjusting mechanism for adjusting the distance between cable joints is arranged on the outer wall, close to the placing cylinder, of the butt joint cylinder, the cable is inserted into the placing cylinder, the annular plate wraps the part, needing to be connected, of the cable, and the cable is pulled to be extruded by the annular plate; and the extrusion stress at the cable joint is more uniform, so that the electric stress distribution at the cable joint is more uniform, and overhigh local electric stress caused by non-uniform electric field distribution is avoided.

The invention relates to the technical field of automatic dumping type large-tonnage molten iron transfer trolleys, and discloses an automatic dumping type large-tonnage molten iron transfer trolley and a using method thereof.The automatic dumping type large-tonnage molten iron transfer trolley comprises a mounting base, a plurality of supporting columns are fixedly connected to the side wall of the mounting base, and a vertical frame is fixedly connected to the positions over the supporting columns. According to the pouring device, the moving column drives the sliding block to move towards the end close to the pouring shaft along the groove, in addition, the moving column can also drive the vertical rod to move towards the end close to the pouring shaft, and the vertical rod moves to drive the first sliding block to move towards the end close to the pouring shaft along the second sliding groove; a first sliding block moves to drive a locking column on a first pushing plate to move towards one end close to a dumping shaft, and at the moment, the locking column is locked in a groove in a supporting arm, so that the dumping shaft on the ladle cannot be separated from the supporting arm when the ladle dumps molten iron, and the risk that the ladle is separated is reduced; and the safety performance of the device is improved.

The utility model relates to a self-sealing structure and a connecting device for connecting large-pipe-diameter pipelines, the self-sealing structure for connecting the large-pipe-diameter pipelines comprises a pipe fitting, the pipe fitting is provided with at least two communicated pipeline connectors, and the pipeline connectors are connected with the pipelines. A mounting groove is formed in the inner wall of the pipeline connector or the outer wall of the pipeline in the circumferential direction, a U-shaped sealing ring is arranged on the mounting groove, the U-shaped sealing ring is horizontally arranged, an opening of the U-shaped sealing ring faces inwards, the U-shaped sealing ring is fixed in the mounting groove through adhesive glue, the inner diameter of the U-shaped sealing ring is smaller than the outer diameter of the pipeline, and the U-shaped sealing ring is located between the pipe fitting and the pipeline for sealing. After liquid is introduced into the pipeline, the U-shaped sealing ring extends in the radial direction under the action of the liquid, and sealing is enhanced under the action of the mounting groove. The large-diameter pipeline connecting device comprises the self-sealing structure, and a connecting mechanism is arranged between the pipe fitting and the pipeline. The sealing structure is simple, practical, good in sealing effect, convenient to disassemble and assemble, firm and reliable in connection, flexible and efficient in construction and the like.

The utility model relates to the technical field of filter elements, in particular to a special filter element structure for a sealed hydraulic pump station, which comprises a filter element, sealing components are movably sleeved at two ends of the filter element, each sealing component comprises a sealing ring movably sleeved at two ends of the filter element, and a sealing ring is movably sleeved in a clamping groove on the outer side surface of each sealing ring. And an adjusting assembly is movably arranged in a clamping groove in the outer side surface of the sealing ring. According to the utility model, the arc-shaped push plate expands outwards to push the sealing ring to extend outwards, so that the friction force between the sealing ring and an equipment mounting binding surface is increased, the force used when the filter element is mounted is reduced, the filter element is more convenient to mount, and meanwhile, the arc-shaped push plate moves inwards to reduce the friction force between the sealing ring and the equipment mounting binding surface, so that the service life of the filter element is prolonged. And when the mounting height of the filter element is relatively high, a worker can easily lift and disassemble the filter element upwards, so that damage to the filter element caused by back-and-forth shaking of the filter element for disassembly due to insufficient disassembly force is avoided, and the filter element is more convenient to disassemble.

The utility model discloses a kind of stacked spiral concentration dehydration integrated machines, it is related to stacked spiral dehydration equipment technical field, including base, the base is obliquely installed in equipment site, and the base upper portion is provided with cylinder, the cylinder right side is provided with concentration part, and the cylinder left side is provided with dehydration part, and concentration part and dehydration part internal space are communicated, the fixed mounting plate of cylinder left side, and the servo motor is installed in mounting plate left side, and servo motor is connected with output end by speed reducer, the output end right side is connected and installed with screw rod, and screw rod is penetrated in cylinder interior, the cylinder left side outside is provided with back pressure plate, and back pressure plate rear side is provided with mud scraping rod, the base interior is water tank structure, and the base interior is provided with filter plate. The stacked spiral concentration dehydration integrated machine solves the problem of traditional equipment mud cake blockage, cleaning is complicated, dehydration efficiency is improved, continuous operation time is extended, and is suitable for municipal, industrial sludge dewatering treatment.

The utility model discloses a cleaning mechanism of a dispensing nozzle, which comprises a bottom base plate, an unwinding rotating shaft and a winding rotating shaft, a cloth roll is sleeved on the unwinding rotating shaft, an adhesive tape wiping section is formed between a new cloth roll section on the unwinding rotating shaft and a waste cloth roll section wound on the winding rotating shaft, one end of the unwinding rotating shaft is fixedly arranged on a first vertical plate, and the other end of the unwinding rotating shaft is fixedly arranged on a second vertical plate. The outer side of the unwinding rotating shaft is sleeved with a first rotating disc and a first blocking disc located on the side, opposite to the first vertical plate, of the first rotating disc, the other end of the unwinding rotating shaft is provided with a first nut, and a spring in an extrusion state is arranged on the outer side of the unwinding rotating shaft in a sleeving mode and located between the first nut and the first blocking disc. A base plate is installed on the side, facing the first rotating disc, of the first vertical plate. According to the utility model, the rotation of the cloth roll can be prevented, the friction resistance on the rotating disc can be improved, the unnecessary rotation of the rotating disc caused by the stress in the process is avoided, and the position precision and stability of the rubberized fabric section are improved, so that the rubberizing stability is improved.

The application discloses a kind of surface treatment machines of household installation integrated aluminum magnesium buckle plate after forming, belong to plate surface treatment technical field, including film laminating machine body, adjustable extrusion roller assembly is fixedly connected with gas guide pipe assembly, the gas guide pipe assembly is axially opened with several first gas outlets, rotating tube assembly is rotatably connected in the gas guide pipe assembly, several second gas outlets are opened in the rotating tube assembly, several gas bag assemblies are fixedly connected on the gas guide pipe assembly, several gas bag assemblies are communicated with several first gas outlets respectively, the rubber material gas bag assembly is used as extrusion component in the application, using the good elasticity and ductility of rubber, when the recess or protruding part of aluminum magnesium buckle plate moves to the below of gas bag assembly, gas bag assembly extrudes into the recess pit or close to protruding part, so that protective film is tightly attached to the surface of aluminum magnesium buckle plate, greatly reduce the probability of bubble generation.

This utility model discloses a pressure testing fixture for a sealing component, including a pressure testing bracket. A bearing sleeve is fixedly connected to the inner wall of the pressure testing bracket, and a main shaft is fixedly connected to the inner ring of the bearing sleeve. A support sleeve is fixedly connected to the inner wall of the pressure testing bracket. A hinge seat is fixedly connected to the right end of the pressure testing bracket, and a sealing bushing is fixedly connected to the inner wall of the hinge seat. A shaft is fixedly connected to the inner wall of the sealing bushing, and a mechanical seal outer sleeve is fitted onto the outer surface of the sealing bushing. The left end of the mechanical seal outer sleeve is fixedly connected to the right end of the hinge seat, and a fastening nut is threaded onto the outer surface of the right end of the shaft. This utility model, through the configuration of the pressure testing bracket, bearing sleeve, main shaft, support bearing, sealing bushing, hinge seat, mechanical seal outer sleeve, and fastening nut, allows for tightening and positioning of the shaft by tightening the fastening nut, achieving compressive contact between the shaft and the main shaft, increasing the compressive force between the main shaft and the shaft, and achieving the sealing effect of the sealing component during compression, thus facilitating pressure testing of the sealing component.

The invention discloses a psychiatric relaxation and counseling device, which relates to the technical field of rehabilitation exercise, and comprises a bed frame and a kneading mechanism, wherein the kneading mechanism comprises a sandwich plate fixed to the bottom of the bed frame, a square cylinder shell is installed on the sandwich plate, an electromagnet and a mounting shell located above the electromagnet are fixedly installed inside the square cylinder shell, a pressing rod and a magnetic block are slidably connected inside the mounting shell, the pressing rod is infused with hypnotic essential oil, and the pressing head deflects and kneads the pressing position back and forth while pressing the muscle, so as to stimulate the muscle and soft tissue, promote blood circulation and metabolism, and thus achieve a better relaxation effect, and the acceleration of blood circulation accelerates the diffusion and absorption of essential oil molecules in the skin, so that this design can enable the human body to fully absorb the hypnotic essential oil, strengthen the use effect of the hypnotic essential oil, make the patient fall asleep more easily, effectively alleviate the patient's anxiety, irritability, insomnia and other problems, and achieve the effect of relaxation and counseling.

The present invention relates to the technical field of crushing processing, and specifically to a raw material crushing device for aluminum nitride production, including a shell, a power mechanism and two crushing rollers; a fixed platform and a movable platform are arranged outside the shell, the fixed platform is fixed to the shell, and the movable platform is located above the fixed platform and connected to the fixed platform through an elastic member; the power mechanism includes a power member and a transmission rod; the transmission rod is arranged horizontally and the end of the transmission rod is supported by the movable platform; the power member drives the transmission rod to rotate; each crushing roller is sleeved outside a transmission rod and supported by the transmission rod, and the distance between the two transmission rods is smaller than the diameter of the crushing roller. The two crushing rollers abut and squeeze the material under the action of their own gravity. When encountering a hard object that is difficult to crush, the hard object will push the two crushing rollers to rotate so that the upper parts of the two crushing rollers are close to each other and the lower parts are far away from each other, thereby reducing the storage area defined above the two crushing rollers, thereby reducing the amount of uncrushed material that falls when the hard object passes through the two crushing rollers.

The present application relates to battery test equipment and electrical connection field, specifically to a cylindrical battery current, voltage and temperature probe harness integrated assembly; it contains probe fixing base, rigid conductive row, flexible sampling line, probe, conical heat shrink sleeve and phase change thermoplastic elastomer; the assembly constructs inverted V type suspension cavity in the glue injection cavity of fixing base, the welding node of sampling line and probe tail is wrapped by heat shrink sleeve and matched in the suspension cavity, and the remaining gap is filled with phase change elastomer; its core is to use the joule heat generated by the conductive row during testing to make the elastomer expand and become rigidly locked, and when externally pulled, the conical heat shrink sleeve is wedged into the suspension cavity to generate centripetal clamping force; the present application ingeniously combines the flexibility and high rigidity of the material, absorbs assembly stress at room temperature, effectively blocks the stress conduction of mechanical shock to the signal node during work, avoids the micro loosening of the node due to reciprocating motion, and greatly improves the connection reliability in complex environment.

This utility model relates to a rotary double-compartment preservation bottle, including a feeding compartment; a separating membrane, sealed at the opening of the feeding compartment; an upper compartment sleeve, a shell structure, which is rotated and sealed onto the feeding compartment to form the upper compartment, with the separating membrane located between the upper and lower compartments. The side wall of the upper compartment sleeve is provided with a deformable part, which moves to the center of the upper compartment under the action of external force, reducing the volume of the upper compartment, and resetting after the external force is removed; a guide member, located in the upper compartment and fixedly connected to the lower compartment; and a puncturing member, movably installed on the guide member, which has a puncture part facing the separating membrane. The upper compartment sleeve is drivenly connected to the puncturing member. When the upper compartment sleeve rotates in a first direction, under the guidance and limitation of the guide member, the upper compartment sleeve drives the puncturing member to move towards the separating membrane. After the puncturing part punctures the separating membrane, the upper compartment and the lower compartment are connected, avoiding leakage of the material during the connection of the two compartments and requiring less force. When pouring out the material, it is easy to control the amount of material discharged.

The utility model provides a crucible packaging tool for a differential scanning calorimeter, which comprises a fixed shell, the bottom end of the fixed shell is connected with a base in a sliding manner, a plurality of lower dies are arranged in the base, and a crucible is arranged on the surface of each lower die; the top end of the fixing shell is slidably connected with a pressing die, a plurality of fixing holes are formed in the pressing die, and upper dies are installed in the fixing holes. The upper die is in threaded connection with the first screw, and the top end of the first screw is clamped in the fixing hole; a rubber pad is mounted between the top end of the upper die and the pressing die; a stamping block is connected into the upper die in a sliding mode, and the stamping block extrudes a crucible cover. A first spring is installed in the upper die, and the two ends of the first spring abut against the first screw and the stamping block correspondingly. The crucible packaging tool for the differential scanning calorimeter has the advantages that a plurality of crucibles can be packaged at the same time, and the packaging effect is good.

The invention discloses an automobile DAB safety air bag folding device, and belongs to the field of automobile safety air bags, the automobile DAB safety air bag folding device comprises a rack, a limiting ring is fixed on the rack, a cover cap is placed in the limiting ring, a limiting strip is arranged on the circumference of the top of the cover cap, and a circular shell is arranged above the limiting ring; the rack is provided with an air cylinder used for driving the circular shell to ascend and descend, an air bag support is placed in the circular shell, limiting grooves with the same number as the limiting strips are formed in the air bag support, the limiting strips slide in the limiting grooves, and clamping mechanisms are installed on the limiting rings and the circular shell correspondingly; and the blocking mechanism is arranged on the circular shell. Through the arrangement of the blocking mechanism, the air bag can be effectively prevented from affecting installation of the cover cap and the air bag support, when the cover cap and the air bag support are installed, the situation that part of the structure of the air bag hinders the limiting strips from being inserted into the limiting grooves can be avoided, and the problem that in the prior art, assembly is difficult due to the influence of the air bag is solved.

The invention belongs to the technical field of ground washing and sweeping, and provides a ground washing and sweeping integrated vehicle which comprises a vehicle body, the vehicle body is connected with a sweeping mechanism and a spray washing mechanism, the vehicle body is further fixedly connected with a supporting frame, the two ends of the supporting frame are each provided with a conveying mechanism, and the two conveying mechanisms are arranged in a V shape; each conveying mechanism is rotationally connected with a plurality of push plates, a certain included angle is kept between each push plate and the horizontal plane, springs are connected between the push plates and the conveying mechanisms, and all the push plates can continuously move towards a fixed track under driving of the conveying mechanisms. According to the garbage collection device, the push plate can be close to the ground to shovel up garbage from the ground and push the garbage obliquely upwards, and the garbage collection effect is improved; and the problems that the feeding assembly makes direct contact with the ground, the garbage is scraped with the ground when collected, the collecting effect is poor, and the road surface is prone to being damaged are solved.

The invention relates to the technical field of medicine taking experiments, and discloses medicine sampling equipment based on the Internet of Things, the medicine sampling equipment comprises a clamping equipment body, the clamping equipment body comprises an outer side sleeve; the middle layer is arranged in the outer side sleeve in a sliding mode and used for changing the length in a telescopic mode; the clamping unit is arranged in the middle layer in a sliding mode and used for changing the length and conducting clamping; the clamping unit comprises clamping sheet plates, output ends and clamping ends, the output ends and the clamping ends are located on the two sides of the clamping sheet plates respectively, the output ends control the clamping sheet plates on the two sides to get close to each other, and the clamping ends clamp medicine in an elastic mode. The medicine is located between the two half clamping blocks, the clamping blocks on the two sides extrude the medicine, the clamping blocks fixed through the reset springs can slide, the situation that the extrusion force of the medicine is too large is avoided, the half clamping blocks capable of sliding are arranged, the position of the medicine can be automatically adjusted through the medicine, the edge of the medicine is parallel to the clamping parts of the clamping blocks, and falling of the medicine is avoided.

This invention discloses a triple eccentric butterfly valve with a compensated double-seal function, belonging to the field of butterfly valve technology. It includes a valve body, valve shaft, valve core assembly, compensation assembly, flange tube, and control unit. The valve shaft and valve body are rotatably connected. There are two sets of flange tubes, each securely connected to one side of the valve body. The valve core assembly is located inside the valve body and is securely connected to the valve shaft. The compensation assembly is also securely connected to the valve core assembly. The control unit is securely connected to the upper end of the valve body. Multiple grooves are evenly distributed on the surface of the valve body. This invention compensates for the primary sealing effect by utilizing the change in water flow impact force during the butterfly plate closing process. This compensation reduces friction between the sealing ring and the butterfly plate during closing, and after the butterfly plate closes, the water pressure increases the compressive force between the butterfly plate and the sealing ring, greatly improving the sealing effect.

The multi-screw plastic extruder comprises a base, a single-screw cylinder and a double-screw cylinder, heating cylinders are arranged on the outer wall of the single-screw cylinder and the outer wall of the double-screw cylinder, the tail of the single-screw cylinder is communicated with the head of the double-screw cylinder, a feeding port is formed in the head of the single-screw cylinder, and a discharging port is formed in the tail of the double-screw cylinder. An extrusion opening is formed in the tail portion of the double-screw barrel, a first screw is arranged in the single-screw barrel, two second screws are arranged in the double-screw barrel, and driving assemblies are arranged on the single-screw barrel and the double-screw barrel and used for driving the screws. And the output is improved while the plasticizing effect is not influenced, so that the application range of the extruder is wider.

The present invention relates to the technical field of municipal engineering, and specifically to a cable fixing device for municipal engineering, comprising a fixed base plate, a fixed rod is installed in the middle of the top of the fixed base plate, adjustment slide grooves are provided on both the front and rear sides of the fixed rod, a fixed frame head is slidably connected in the adjustment slide groove, a docking circular opening is provided in the middle of the right side of the fixed frame head, a twisting fixing mechanism, a fitting fixing mechanism and a tightening mechanism are provided inside the fixed frame head, the fitting fixing mechanism comprises a mounting ring frame, a mounting ring groove is provided in the mounting ring frame, an extrusion airbag is installed in the mounting ring groove, a buffer limit mechanism is provided on the tightening mechanism, and a loose limit mechanism is provided on one side of the tightening mechanism; when the cable is fixed, the present invention applies torque to the outside of the cable end through the twisting fixing mechanism, further increasing the friction and firmness during contact extrusion, and at the same time, the cable end is squeezed and fixed at multiple positions to improve the firmness of the cable when fixed.

The present invention relates to the technical field of steel belt conveyors, and discloses a steel belt deviation correction device, including a base, and also including: a slide, which is horizontally slidably arranged on the base through a driving member; two groups of pressure regulating members symmetrically arranged on the left and right and located above the slide; the pressure regulating member includes a support seat slidably connected to the base in the vertical direction, and the top of the slide seat is in sliding contact with the support seats on the two groups of pressure regulating members. The present invention can correct the deviation of the deviated steel belt only by relying on the structure of the deviation correction device itself, and can easily determine which side the position of the steel belt has deviated to, so that it is possible to know when the deviation correction device intervenes without configuring a position sensor. At the same time, the pressure regulating rollers in the two groups of pressure regulating members can compress and squeeze the steel belt to make the steel belt tensioned, thereby eliminating the need for the setting of the tensioning mechanism, and the pressure regulating rollers in the pressure regulating member can unexpectedly play a role in cleaning the steel belt, achieving the purpose of "killing three birds with one stone".

This invention relates to the field of poultry farming facilities technology, and discloses a constant pressure water supply system for poultry drinking water lines. The system includes a constant pressure water supply unit with two connectors at the top, each connector having a flexible hose at the other end. A protective shell is fixedly installed in the middle of the outer wall of each connector. An adjusting nut is rotatably connected to a connecting frame near the protective shell. A drive turntable is rotatably connected to one end of the connecting frame inside the protective shell. Clamping components are slidably connected to the side of the drive turntable. By turning the adjusting nut, the drive turntable and clamping components move synchronously to the right, causing a sliding column to slide inside a spiral groove, rotating the sealing ring and the rotating ring. The rotating ring, located on the side wall of the inclined groove, presses against a second sliding column, pushing the second sliding column and the sliding seat along the guide rail, causing the arc-shaped clamping plate to fit against the surface of the flexible hose. This system offers advantages such as convenient and quick connection between the pressure regulating water supply unit and the water pipe, and good sealing performance.

The present invention discloses a tendon extractor capable of local anesthesia, comprising: an outer tube body, the outer tube body having a hollow passage and a positioning wire perforation extending along the axis and a plurality of anesthesia passages extending along the axis and having outlets located at different heights of the outer tube body; a tendon extractor rod body arranged in the hollow passage, the inner end of the tendon extractor rod body having an open ring, the open ring can form a closed ring with the outer tube body, and the tendon extractor rod body having a through hole extending along the axis direction; a positioning member that can pass through the positioning wire perforation, the inner end of the positioning member having a C-shaped positioning ring, an elastic cross piece arranged in the C-shaped positioning ring, the two ends of the elastic cross piece are each connected to a set of rings, one set of rings is fixedly connected to the C-shaped positioning ring, and the other set of rings is sleeved on the C-shaped positioning ring; a limiting mechanism arranged in the positioning wire perforation, the limiting mechanism is used to clamp or release the positioning member, and the C-shaped positioning ring is fixedly connected to the end of the positioning rod. The present invention can be used for precise anesthesia, and the tendon extractor can be positioned when the tendon extractor is removed.

The application discloses a step-by-step self-balancing derrick workover rig, and belongs to the technical field of workover rig equipment. The workover rig is provided with a main mounting piece and an auxiliary mounting piece, and a plurality of groups of fixing frames are fixedly connected to the main mounting piece and the auxiliary mounting piece in a ring shape and at equal intervals. The two fixing frames of the same group are rotatably connected through a pneumatic push rod, the telescopic end of the pneumatic push rod is fixedly connected with a connecting piece, the connecting piece is rotatably connected with a fixing shoe, the fixing shoe is provided with a main extrusion surface, and the main mounting piece and the auxiliary mounting piece are both provided with an auxiliary extrusion surface. According to the compressibility of air, the fixing shoe is extruded by the pneumatic push rod, so that the pipe string can be lifted upwards relative to the fixing shoe. When the pipe string is unexpectedly slipped, the fixing shoe is guided by the main extrusion surface and the auxiliary extrusion surface, the extrusion force of the fixing shoe on the pipe string is increased, the pipe string is extruded and fixed, the falling of the pipe string is limited without affecting the lifting of the pipe string, and the probability of the pipe string falling into the well is reduced.

This utility model belongs to the field of multistage pump technology, specifically a high-sealing self-balancing multistage pump, including a pump body and an inlet pipe and an outlet pipe connected to the pump body. Both the inlet and outlet pipes are equipped with sealing components. Each sealing component includes a positioning mechanism located at the end of the inlet pipe and a sealing mechanism connected to the end of the positioning mechanism. The positioning mechanism includes a positioning groove at the end of the inlet pipe, a fixing ring fitted into the positioning groove, and a positioning tube fixed to the inner side of the fixing ring. The sealing mechanism includes a slot within the positioning tube. This utility model utilizes the sealing components so that during operation, water flows through the positioning tube, pushing the elastic plate to move. This causes the push plate to squeeze the sealing ring, and the sealing ring adheres tightly to the outer wall, achieving further sealing after pressurization during operation. This effectively prevents the medium from flowing to the connection point at the end of the inlet pipe, reducing the pressure at the connection point and improving service life.

The utility model discloses a waterproof and anti-leakage device for a laser radar lens, which particularly relates to the technical field of laser radars and comprises a laser radar body, a lens is mounted on one side of the laser radar body, and a sealing mechanism is arranged on the outer side of the lens. The sealing mechanism comprises a gasket, the outer side of the gasket is fixedly connected with the inner side of the laser radar body, the inner side of the gasket is clamped with the outer side of the lens, a plurality of sealing grooves are formed in the inner wall of the gasket, two protruding strips are fixedly connected in the gasket, a plurality of first check blocks are fixedly connected to the inner side of the laser radar body, and a sealing ring is fixedly connected to the outer side of the laser radar body. A limiting frame is installed on one side of the laser radar body. Multi-point contact type sealing of the edge of the lens is achieved through the design of the multiple sealing grooves and the protruding strips, the extrusion force of the gasket is enhanced in combination with the check block structure, and the waterproof and anti-seepage performance is improved; meanwhile, connecting plate pre-positioning and connecting rod secondary fastening are adopted, it is guaranteed that assembling pressure is evenly distributed, and sealing reliability and assembling convenience are both considered.