63results about How to "Avoid offset shaking" patented technology

The invention discloses an iron bar automatic segmenting mechanism, and belongs to the field of metal material processing mechanical equipment. The iron bar automatic segmenting mechanism includes a material-carrying mechanism, a material-cutting mechanism and a fixing material-pushing mechanism which are sequentially and fixedly arranged at one side of a fixing support in the horizontal direction, and a material-carrying chain which is winded is horizontally arranged between a main material-carrying chain and a secondary material-carrying chain; a material-carrying electromagnet is fixedly arranged at the outer side of the material-carrying guiding plate, a reciprocating material-cutting plate is slidably arranged at a material-cutting guiding rod in the horizontal direction, and a cutting handpiece is slidably arranged at the reciprocating material-cutting plate in the vertical direction; and a horizontal-pushing guiding rod is separately and horizontally fixed to two sides below a horizontal-pushing connecting plate, a fixing guiding plate and a moving guiding plate are separately and vertically arranged at two sides of the horizontal-pushing guiding rod, and the material-transporting mechanism is horizontally and fixedly arranged at the upper side of a material-transporting supporting plate. According to the iron bar automatic segmenting mechanism, the structural design isreasonable, iron bars can be transferred horizontally, stably, accurately and intermittently according to needed length, the iron bars can be clamped and cut and automatic feeding can be realized, andthe need for machining using can be met.

The invention discloses a concrete trial-manufacturing and processing device, and belongs to the field of building material processing mechanical equipment. A main material feeding hopper and an ingredient feeding mechanism are arranged on the two sides of the upper portion of a concrete preparation kettle correspondingly, a concrete discharging control valve is fixedly arranged on a concrete discharging pipe in the middle of the lower side of the concrete preparation kettle, and a concrete discharging mechanism is arranged on the lower side of the concrete discharging pipe; and a preparation water inlet guide pipe is arranged on the concrete preparation kettle on the adjacent side of the main material feeding hopper, the output end of a concrete stirring motor is vertically and rotatably connected with a concrete stirring shaft, and a plurality of stirrers are horizontally and fixedly arranged on the concrete stirring shaft in sequence from top to bottom. According to the concrete trial-manufacturing and processing device, the structural design is reasonable, ingredients can be conveniently, accurately and quantitatively added according to the needs of concrete trial-manufacturing and processing, trial-manufacturing and processing of concrete of different specifications and batches are achieved, the processed concrete can be continuously and quantitatively transferred and discharged, the automation degree of concrete trial-manufacturing is improved, and the use needs are met.

The invention relates to the field of numerical control machine tools, in particular to a numerical control clamp system used for a numerical control machine tool and a using method of the numerical control clamp system. The numerical control clamp system comprises a numerical control machine tool platform, a first supporting plate which is fixedly installed on the numerical control machine tool platform and a second supporting plate which is movably installed on the numerical control machine tool platform and parallel to the first supporting plate, through holes are formed in the first supporting plate and the second supporting plate, a tubular workpiece is arranged between the two through holes in an erected mode; and the numerical control clamp system is characterized in that an inner hole clamping device for clamping the tubular workpiece is installed on the numerical control machine tool platform, and a feeding and discharging device for loading the tubular workpiece into the through holes of the first supporting plate and the second supporting plate is installed on the numerical control machine tool platform. The numerical control clamp system used for the numerical control machine tool and the using method of the numerical control clamp system which meet the requirement for inner hole clamping of the tubular workpiece and are high in clamping efficiency, convenient to operate and stable in running are provided.

The invention discloses a mechanical gripper for timber processing and relates to the technical field of mechanical grippers. The mechanical gripper comprises a top plate. The lower surface of the topplate is fixedly connected with the upper surfaces of two side plates, and the right side face of the side plate on the left side is in clamped connection with a first bearing; a first rotating shaftis sleeved with the first bearing, the right end of the first rotating shaft is fixedly connected with the left end of the first threaded column, and the right end of the first threaded column is fixedly connected with the left end of a second rotating shaft; and the outer surface of the second rotating shaft is sleeved with a second bearing, and the second bearing is in clamped connection with the side face of the side plate on the right side. According to the mechanical gripper for timber processing, by arranging a first driving device, the first threaded column, a second driving device, asecond threaded column, a second extrusion plate, electric push rods and arc-shaped plates, timber can move rightwards, the occupied area is saved through the mechanical structure, and the gripper issmall in size, so that the space is effectively saved, resource waste is avoided, and the using needs of a small processing factory are met.

The invention discloses a plate adjusting and locking mechanism, belonging to the field of construction material processing machinery and equipment. A guide plate mechanism and a clamping plate mechanism are vertically and fixedly arranged on the two sides of the upper part of a fixed base respectively, and the two ends of a guide plate roller are rotationally connected with the upper ends of guide plate supports on the two sides of the upper part of the fixed base respectively. The output end of a lifting cylinder is fixedly connected with upper end of a lifting rack. The clamping plate mechanism comprises a clamping plate support, an adjusting support, a lifting support, a rotary clamping plate and a locking mechanism. The lifting support is horizontally arranged on the lower side of theadjusting support, and lifting guide rods are vertically and fixedly arranged on the two sides of the upper part of the lifting support respectively and are arranged on the adjusting support in a sliding mode along a vertical direction. The middle parts of the two sides of the rotary clamping plate are respectively hinged with a rotary support seat, and the locking mechanism is horizontally and fixedly arranged on the upper side of the adjusting support. The plate adjusting and locking mechanism has a reasonable structural design, can stably and accurately convey a plate, can also conveniently and efficiently adjust the oblique angle of the plate, thereby meeting the needs of processing and use.

The invention belongs to the technical field of building construction, and particularly relates to a miniature adjustable steel inner pile sleeved pile which comprises an outer sleeve, an inner pile and a steel ring plate. Sliding grooves are evenly formed in the upper surface of the steel ring plate, and are annularly arranged at equal intervals with the center line of the steel ring plate as the axis; sliding rods are slidably connected into the sliding grooves; arc-shaped blocks are fixedly connected to the ends, away from the inner pile, of the sliding rods; through holes are formed in the middles of the arc-shaped blocks; one same reinforcing steel bar is arranged in the through holes among the multiple arc-shaped blocks in the vertical direction; guide rods are fixedly connected to the upper surfaces of the sliding rods; the upper surface of the steel ring plate is rotationally connected with an adjusting plate; the adjusting plate is annular; arc-shaped grooves which are uniformly distributed are formed in the adjusting plate; the arc-shaped grooves are obliquely designed; and the guide rods slide in the arc-shaped grooves. According to the miniature adjustable steel inner pile sleeved pile provided by the invention, the size of the steel ring plate is adjusted, the construction efficiency is improved, the overall connection strength of a pile body is improved, the pile body is prevented from being deformed and damaged, and the service life of the pile body is prolonged.

The invention discloses a lifting building machine, and belongs to the technical field of building machinery. The machine comprises a lifting box for lifting and carrying and a plurality of connecting mechanisms, wherein the plurality of modularly assembled connecting mechanisms for improving the assembling efficiency of the lifting machine are mounted in an external stable frame, a toothed plate is spliced through the plurality of connecting mechanisms, and the toothed plate is engaged with a driving gear. According to the invention, through a designed purging assembly, when the driving mechanism drives a main shaft of a reduction gear box to rotate, a cam can extrude and drive an elastic air bag on one side to compress and blow air so as to realize air blowing and air injection purging of a purging nozzle on one side, and meanwhile, lubricating oil can be sprayed through one oil tank, and therefore, the self-cleaning and lubricating capacity to the toothed plate in the lifting process of the lifting box can be achieved, the wear-resisting and dust-proof capacity of the toothed plate can be effectively improved, the maintenance period of the toothed plate and a driven gear is effectively prolonged, and the use economic benefits after assembly are increased.

The invention discloses a grain bale baker. The grain bale baker comprises a base, wherein a drying chamber is fixedly connected to the top of the base; a photoelectric sensor is fixedly mounted on the left side of the drying chamber; a conveying belt is arranged in the drying chamber; a suction fan is fixedly mounted at the bottom of the drying chamber; a humidity sensor is fixedly mounted in theposition of the inlet of the suction fan; a combustion machine is arranged at the top of the inner cavity of the drying chamber; and a distance sensor is fixedly mounted at the bottom of the combustion machine. According to the grain bale baker disclosed by the invention, through the arrangement of an electric motor, a winding wheel can be driven to rotate to wind a cable; through the arrangementof the winding wheel, the combustion machine and an air blower can be driven to move up and down to adapt to bales in different sizes; and through the arrangement of connecting rods and sliding sleeves, when the combustion machine moves, the sliding sleeves slide on the surfaces of fixed rods, so that the lifting stability of a cover plate is increased, the occurrence of offset and shake is avoided, and besides, the problem that the work efficiency is reduced because automation cannot be achieved and the cover plate cannot be automatically moved is solved.

The invention belongs to the technical field of a transverse cutting machine and discloses an electrostatic-eliminating transverse cutting machine for a medical sticking film. The electrostatic-eliminating transverse cutting machine comprises a machine body, wherein a transfer table is mounted at the top of the machine body, a controller is fixed to the side wall of the machine body, a shearing frame and a drying frame are mounted above the top of the machine body and close to the transfer table, the shearing frame is located on one side of the drying frame, a sprinkler head is mounted above one side, away from the drying frame, of the shearing frame, a fan is fixed to the top of the drying frame, besides, an air duct is fixedly connected to the top end in the drying frame through a bracket, and an air outlet of the fan is connected with the air duct through a pipeline. According to the electrostatic-eliminating transverse cutting machine for the medical sticking film, by cooperation of a motor, a driving gear, driven gears, screws, thread inserts and a supporting plate, a shear knife can perform linear lifting and is stable and reliable during lifting, besides, stress at two endsof the shear knife is uniform, synchronous motion can be realized, and finally, offset and shaking during shearing are prevented and the shearing quality is improved.

The invention discloses a cable material protective layer continuous coating device, and belongs to the technical field of coating. The cable material protective layer continuous coating device comprises a base, a control cabinet is fixedly mounted on the top of the base, a spraying mechanism is fixedly mounted on the top of the base, an atomization mechanism is fixedly mounted in an inner cavity of the spraying mechanism, and a heat exchange mechanism is fixedly mounted on the rear side of the atomization mechanism; a feeding mechanism is fixedly mounted at the top of the base and located on the front side of the spraying mechanism. According to the coating device, the elastic ring is unfolded to pull the relative unfolding area of the bottom bearing cover, meanwhile, the bottom elastic air bag is expanded after air injection, at the moment, and the inner side abutting shifting piece can be unfolded through the elasticity of the inner side abutting shifting piece, so that the spraying, atomizing, spraying and receiving range of spraying film liquid can be adaptively adjusted, the full atomization treatment of the coating liquid is met, the dispersion coating effect of the atomized coating liquid is improved, and the coating treatment requirements of cable protection layers with different diameters are adjusted and controlled through the adjustable range.

The invention discloses a portable reaming mechanism for pile foundation engineering, and belongs to the technical field of pile foundation engineering. The portable reaming mechanism comprises a base, wherein an adjusting mechanism is arranged at the top of the base; a driving mechanism is meshed with one side of the adjusting mechanism; a fixing rod is fixedly connected to one side of the driving mechanism; the fixing rod is fixedly connected to the top of the base; a supporting mechanism is arranged at the bottom of the base; a main shaft mechanism is fixedly connected to the top of the fixing rod; a cutter is arranged on one side of the adjusting mechanism; and one side of the cutter is connected with the fixing rod in a sleeved mode through a clamping mechanism. According to the portable reaming mechanism, a first hydraulic cylinder does not make contact with the fixing rod when moving, so that the rotating crushing stability is effectively guaranteed; a connecting rod moves to drive a blade to move towards the outer side, the expanded hole diameter is increased by the moved-out blade, and then the reaming crushing hole diameter can be rapidly adjusted; and meanwhile, the crushing efficiency can be remarkably improved, the adjusting adaptability is guaranteed, reaming can be directly adjusted during crushing, the construction efficiency is improved, and the use requirements are met.

The invention discloses a circulating cold compress device for orthopedic nursing, and particularly relates to the technical field of orthopedic nursing instruments. The circulating cold compress device comprises a base; a cold compress seat is attached to the top of the base; connecting plates are fixedly connected to two sides of the cold compress seat; connecting blocks are fixedly connected tothe bottoms of the connecting plates on the two sides; a threaded cap is embedded in one side of the connecting block on one side; a threaded column is in threaded connection with the interior of thethreaded cap; rotating shafts are fixedly connected to the two ends of the threaded column; bearings are arranged on the outer side walls of the rotating shafts in a sleeving mode; first fixing plates are embedded in the outer side walls of the bearings; and handles are fixedly connected to one ends of the rotating shafts. By arranging an upper air bag and a lower air bag, cold air in the upper air bag and the lower air bag can be circularly input through circulating refrigeration of a refrigerating machine; and compared with the prior art, the duration time needed by cold compress is met, and extrusion cold compress and fitting cold compress of different affected parts can be effectively adapted, so that the cold compress comfort is remarkably improved.

The invention discloses a quick positioning mechanical arm convenient to adjust, and belongs to the technical field of mechanical arms. The quick positioning mechanical arm convenient to adjust comprises a mechanical arm body, wherein one side of the mechanical arm body is movably connected with a positioning mechanism; the top of the mechanical arm body is connected with a limiting mechanism; andthe bottom of the positioning mechanism is provided with a damping mechanism. According to the quick positioning mechanical arm convenient to adjust provided by the invention, through the designed positioning mechanism, after a second threaded column rotates and moves upwards to be separated from a limiting ball, a magnetic attraction base does not conduct magnetic attraction on the limiting ballany more, and at the moment, the limiting ball can be driven to move out of a protective shell and the limiting bases on the two sides by pulling the mechanical arm body, so that the mechanical arm body can be rapidly disassembled and maintained; and the mechanical arm body can be bent and limited at multiple angles through a limiting device in the protective shell, so that the adjusting radius of the mechanical arm body is increased, then the disassembly convenience of the mechanical arm body can be remarkably improved, the mechanical arm body can be rapidly maintained, rapid leveling, positioning and calibration can be conducted after maintenance, and the overall use requirement is met.

The invention discloses a chain type lifting mechanism for boards and belongs to the field of building material machining mechanical devices. According to the chain type lifting mechanism for the boards, an adjusting support is vertically and fixedly arranged above a board clamping support, a lifting support is horizontally arranged below the adjusting support, the two sides of the upper side of the lifting support are vertically and fixedly provided with lifting guide rods, the lifting guide rods are arranged on the adjusting support in the vertical direction in a sliding manner, a front board pulling chain and a back board pulling chain are fixed to the two sides of the upper side of the lifting support correspondingly, a board pulling air cylinder is horizontally and fixedly arranged onone side of the upper side of the board clamping support, the output end of the board pulling air cylinder is fixedly connected with the middle of one side of a horizontal movement adjusting plate, arotational clamping plate is horizontally arranged on the upper side of the lifting support, the middle portions of the two sides of the rotational clamping plate are hinged to rotational support seats correspondingly, and a locking mechanism is horizontally and fixedly arranged on the upper side of the adjusting support. The chain type lifting mechanism for the boards is reasonable in structuraldesign and capable of firmly clamping and fixing the ends of the boards and conveniently, rapidly and stably adjusting the inclination angle of each board and meets the machining and use demands.

The invention relates to the technical field of tool equipment, in particular to a tool for fixing an inner container of a hydrogen cylinder. The tool comprises an arch-shaped outer plate, two arc-shaped clamping belts are symmetrically arranged in the arch-shaped outer plate, each clamping belt is formed by connecting a plurality of arc-shaped clamping plates end to end, and every two adjacent arc-shaped clamping plates are rotationally connected to each other. By means of the fixing mode, the fixing strength and stability of the inner container can be effectively improved, the diversity of the tool fixing mode is improved, the inner container is prevented from deviating and shaking after being fixed, the machining precision of the inner container is improved, and practicability is improved.

The invention discloses a quality detection device for numerical control wire material production, and relates to the technical field of wire material detection. The quality detection device comprisesa base, wherein the right side of the upper surface of the base is fixedly connected with a first support plate; a first bearing is clamped and connected onto the side surface of the first support plate; a first rotating shaft is sleeved and connected into the first bearing; the right end of the first rotating shaft is fixedly connected with an output shaft of a driving device; the left side surface of the driving device is fixedly connected with the right side surface of the first support plate; a second sliding groove is formed in the left side of the upper surface of the base; a second sliding block is glidingly connected into the second sliding groove. The quality detection device for numerical control wire material production has the advantages that through the arrangement of a second electric push rod, a first electric push rod, an extrusion plate, the second electric push rod and the motor, workers can conveniently perform collection sorting on the extruded wire materials; themulti-time cleaning of waste and abandoned wire materials scattered on the base is not needed; the work by workers is convenient; the use requirements are met.

The invention discloses a discharging mechanism of concrete processing equipment, and belongs to the field of mechanical equipment for building material processing. According to the discharging mechanism of the concrete processing equipment, a concrete blanking control valve is arranged on a concrete blanking pipe of a concrete production kettle, a discharging transferring gear is arranged at the lower end of a discharging vertical rotating shaft, a discharging driving gear at the output end of a transferring discharging motor is an intermittent gear, concrete discharging barrels are arranged at two sides of a discharging transferring circular plate respectively, lifting adjusting sleeves which match the concrete discharging barrels are arranged at two sides of a lifting adjusting rotary disc respectively, a bottom cover limiting annular plate is horizontally arranged at the lower side of the lifting adjusting rotary disc, the middle portion of the lower side of the lifting adjusting rotary disc is horizontally and rotatably connected with the inner side of the middle portion of the bottom cover limiting annular plate, and a lifting adjusting plate is horizontally arranged at the lower side of the bottom cover limiting annular plate. The discharging mechanism of the concrete processing equipment is reasonable in structural design, concrete can be subjected to continuous quantitative transferring and discharging, the single-time transferring and discharging amount of the concrete can be accurately adjusted, the automation degree of concrete discharging is improved, and the production and use requirements are met.

The invention discloses a gas cylinder bracket and a soda water machine. The gas cylinder bracket comprises a fixing part and a guide part, wherein the fixing part is used for fixing a pressure reducing valve of the soda water machine, and a communicating opening is formed in the fixing part and corresponds to a gas inlet of the pressure reducing valve; and the guide part is connected with the fixing part, the guide part is provided with a guide groove, the guide groove extends to the fixing part, the end, close to the fixing part, of the guide groove is opened, and is in communication with the communicating opening, the guide groove is used for allowing a carbon dioxide gas cylinder of the soda water machine to slide therein, the end, provided with a first gas outlet, of the carbon dioxide gas cylinder can extend into the communicating opening from the opening of the guide groove so as to be in seal fit with the gas inlet. According to the gas cylinder bracket and the soda water machine, alignment installation of the carbon dioxide gas cylinder and the pressure reducing valve can be facilitated.

The invention relates to the technical field of liquid crystal display modules, in particular to a fixing device for production and processing of a liquid crystal display module. The device comprisesa bottom plate and a liquid crystal display module body, and fixing feet are rotationally connected with four corners at the lower side of the bottom plate respectively; and the liquid crystal displaymodule body is installed at the upper side of a mounting plate, the mounting plate is put on a plurality of protruding blocks, the protruding blocks are fixedly connected to the upper side face of the mounting plate, and four fixing frames are fixedly connected at the four corners of the upper side of the bottom plate. By arranging a rope and a fixing rod, while the fixing plate is close to the mounting plate, the rope pulls down the fixing rod to allow the fixing rod to extrude the corner of the upper side of the mounting plate so as to avoid the deviation and shaking of the mounting plate in the vertical direction, the mounting plate is stably fixed, then the liquid crystal display module body is fixed, the operation steps are simple, clamping is stable, and the production and machiningefficiency of the liquid crystal display module is greatly improved.

The invention discloses a stable assembly type glass partition with a lateral support structure, and belongs to the technical field of assembly type buildings. The stable assembly type glass partitioncomprises a glass panel, the two sides of the two ends of the glass panel are slidably connected with partition seats through fixing mechanisms, one side of each partition seat is attached to one side of a limiting mechanism, two adjusting mechanisms are arranged on each of the two sides of an inner cavity of each partition seat, and one side of each adjusting mechanism is fixedly connected withone side of the glass panel. According to the stable assembly type glass partition, elastic pads can be in fit contact with the inner cavities of the partition seats to absorb energy, and extrusion plates and extrusion pads on the other side are driven by the tension of first springs and the elastic pads to be fit, extruded and fixed with the glass panel; and the extrusion plates can increase thecontact area with the glass panel on one side, meanwhile, the extrusion pads on one side can improve the supporting effect and improve the overall assembly stability, and connecting rods are limited into the inner cavities of the partition seats, so that the storage performance is good, the light-transmitting observation effect on the rear side of the glass panel is not influenced, and the overalluse requirement is met.

The invention discloses a rubber mixing and stirring device, belonging to the field of rubber machining equipment. The rubber mixing and stirring device comprises a main bracket and a stirring mechanism, wherein the stirring mechanism comprises a stirring motor, a speed changing box, a stirring kettle and stirring shafts; the stirring shafts comprise a main stirring shaft and a secondary stirring shaft; the output end of the stirring motor is in transmission connection with the input end of the speed changing box; the output end of the speed changing box is coaxially connected with the main stirring shaft; a driving chain wheel is in transmission connection with a driven chain wheel by a chain; a cover plate is arranged on the upper side of the stirring kettle; one side of the cover plate is hinged with the upper side of the stirring kettle; a cover plate hydraulic cylinder is arranged between the cover plate and the stirring kettle; a discharging hydraulic cylinder is arranged between the stirring kettle and a main bracket; a plurality of clamping mechanisms are uniformly arranged on the upper side of the stirring kettle; and each clamping mechanism comprises a clamping rod and a fixing ring. The rubber mixing and stirring device is simple in structure and can be used for rapidly and efficiently stirring a plurality of types of rubber, so that the rubber can be sufficiently and uniformly mixed; and materials can be rapidly discharged and the requirements of production are met.

The invention discloses a thermal induction type fireproof automatic sprayer, and belongs to the technical field of fireproof spraying. The thermal induction type fireproof automatic sprayer comprisesa fixing ring, wherein the bottom of the fixing ring is fixedly connected with a fixing base through a thermal induction glass tube, a supporting seat is arranged on the outer wall of the fixing basein an embedded mode, a mounting seat is fixedly connected to the bottom of the supporting seat, blocking mechanisms are arranged on the two sides of an inner cavity of the mounting seat, and a spraying mechanism is arranged at the top of the fixing ring. According to the thermal induction type fireproof automatic sprayer, a bottom extrusion plate can be driven to move into a bottom baffle, and then a water inlet can be extruded and closed through a sealing gasket and an extrusion gasket so that water inside a fire-fighting water net can be prevented from being pumped out, and meanwhile, the extrusion gasket and the sealing gasket can be extruded by the pressure of the water net, a push plate can be stressed to be opened to make contact with an inner cavity of the baffle in an attached mode, and the limiting stability is ensured so that a water leakage point can be quickly blocked during wrong spraying, the water immersion loss inside a room is reduced, and the overall use requirementis met.

The invention discloses a storage device for an edible mushroom underground cold storage and a using method, and belongs to the technical field of edible mushroom storage equipment. The storage device for the edible mushroom underground cold storage comprises a heat preservation box and a movable frame storage frame, wherein the top wall of the heat preservation box is connected with a cold air inlet and a gas generator; stabilizing mechanisms are arranged on the inner walls of the heat preservation box and the movable frame; the bottom of the storage frame is connected with a base; the storage frame is connected to the input ends of the stabilizing mechanisms through the base; each stabilizing mechanism comprises four groups of elastic assemblies and four groups of clamping assemblies; each elastic assembly comprises a shell, a first sliding rod and a second sliding rod; the shells are connected to the inner wall of the movable frame; first sliding grooves and second sliding grooves are formed in the inner walls of the shells; and the first sliding rods and the second sliding rods are connected to the inner walls of the first sliding grooves and the second sliding grooves correspondingly. According to the storage device for the edible mushroom underground cold storage and the using method, the storage environment of other products in the cold storage can be distinguished conveniently, and the damage caused by the fact that the edible mushrooms are mutually extruded due to toppling caused by too high stacking and bumping during transferring can be prevented.

The invention, which relates to the technical field of medical instruments, discloses a tracheal catheter protection device capable of being pulled open. The tracheal catheter protection device comprises a protective sleeve and a trachea cannula. The trachea cannula is movably connected into the protective sleeve; the top end of the trachea cannula is attached to the top end of an inner cavity ofthe protective sleeve; one side of the trachea cannula is communicated with a tracheal catheter; and a tracheal guide core is sleeved in the inner cavity of the tracheal cannula. A first shell and a second shell are fixedly connected to the bottom of the protective sleeve; and a connecting piece is arranged between the first shell and the second shell. With the protective sleeve, a zipper, the first shell and the second shell, the protective sleeve can isolate bacteria when the trachea cannula enters the oral cavity and the nasal cavity of a patient and the trachea cannula and the internal trachea guide core are exposed after the trachea cannula enters the valve position. Compared with the prior art, the tracheal catheter protection device has the following beneficial effects: the tracheacannula and the trachea guide core can be effectively prevented from being polluted by the bacteria and thus postoperative rehabilitation effect of the patient is improved, so that the use requirementis met.

The invention discloses a handheld dust collector, and relates to the technical field of dust collectors, the handheld dust collector comprises a dust collection mechanism, a heat dissipation mechanism is fixedly connected to one side of the dust collection mechanism, a placement mechanism is arranged at the bottom of the dust collection mechanism, a holding mechanism is arranged on one side of the dust collection mechanism, and an extension mechanism communicates with one side of the dust collection mechanism; and one side of the extension mechanism communicates with a suction head. By arranging the dust collection mechanism and the extension mechanism, normal installation of other parts of the machine shell assembly can be effectively prevented from being interfered, the overall size ofthe machine shell assembly does not need to be increased, the appearance of the dust cup assembly is small, exquisite and attractive, and pumped dust can be further filtered. Through cooperation of asilencing shell and a silencing groove, polarization of the extension pipe is reduced, most of noise generated by air circulation is absorbed, meanwhile, an air inlet channel is prolonged, the air flow speed is reduced, then the overall environment noise during dust collection is remarkably reduced, and the use comfort is obviously improved.

The invention relates to a communication tower with good windproof performance and a convenient advertising board replacing function. The communication tower comprises a tower body, a platform, antennae, a replacement mechanism and a windproof mechanism. The replacement mechanism comprises a shell, a lifting frame and two processing assemblies, and the processing assemblies include lifting units and fixing units. The windproof mechanism comprises a second motor, a driving wheel, a first connecting rod, a second connecting rod and a plurality of rotating assemblies. According to the communication tower with the good windproof performance and the convenient advertising board replacing function, the lifting frame can be controlled to lift and lower through the replacement mechanism, people can conveniently replace advertisement at the bottom of the tower, and the lifting frame is fixed so as to prevent the lifting frame from shifting and shaking to affect the advertising effect; and through the windproof mechanism, a rotating plate can be controlled to rotate to reduce the windward area, the windproof performance of the tower is improved, so that the tower is safer and more reliable,and the practicability and reliability of the communication tower are improved greatly.

The invention discloses an installation mode of a preassembled door and window auxiliary frame, and belongs to the technical field of door and window auxiliary frame installation. Specifically, the installation mode comprises the steps that auxiliary frame connecting members are preassembled and embedded, a door and window plate is movably clamped between the auxiliary frame connecting members on the two sides, clamp supporting ribs are fixedly connected to the two sides of the bottom of the door and window plate, and first limiting buckles are movably clamped at the bottoms of the clamp supporting ribs. According to the installation mode, through the designed clamp supporting members, after the clamp supporting members are assembled and connected to the auxiliary frame connecting members through line pressing buckles on the two sides, rapid assembly of the line pressing buckles and the auxiliary frame connecting members can be achieved, moreover, rapid assembly and lightweight design of the embedded hole in one side can be achieved through the clamp supporting members and cavities of the inner cavities of the auxiliary frame connecting members, and then, the assembly requirements of the door and window plate can be effectively improved; and meanwhile, the requirement for sealing a gap between the door and window plate and the embedded hole can be met through a sealing waterproof pad and waterproof glue on one side, and the situation that the durability use requirement is affected by water seepage of a window sill of the door and window plate is avoided.

The invention discloses a full-short-circuit anti-lightning surge wire-wound resistor which comprises a first pin, a metal wire, a second pin, a sealing column, a ceramic rod and a sealing gland, the first pin is fixedly installed in the middle of the lower end of the sealing gland, the ceramic rod is fixedly installed in the middle of the upper end of the sealing gland, the metal wire is wound on the outer surface of the side edge of the ceramic rod, the sealing gland is fixedly installed on the outer surface of the lower end of the sealing column, and the second pin is fixedly installed on the lower portion of the outer surface of one side of the sealing column. According to the full-short-circuit anti-lightning surge wire-wound resistor disclosed by the invention, a resistor generates an open circuit phenomenon under the condition that the temperature of the resistor reaches the temperature which is about to endanger the safety of a product, so that the safety of the product is improved, a fire hazard phenomenon is avoided, the resistor can simultaneously meet the requirements of lightning surge impact resistance and undercurrent protection, and the safety of the resistor is improved.