85results about How to "Elastic overcome" patented technology

The invention discloses a sorting and conveying mechanism for groove workpieces, and belongs to the field of workpiece conveying and machining mechanical equipment. A material transferring pipe is vertically and fixedly arranged in the middle of the upper side of a material transferring support, a horizontal moving push plate is horizontally and fixedly provided with a material pushing pressing rod along the side of the material transferring material pipe, a material guide inclined plate is obliquely and downwards fixedly arranged on one side below the material transferring material pipe, anda material bearing baffle is arranged on one side of a turnover baffle; a material guiding pipe is vertically and fixedly arranged on the material transferring support at the lower side of the material transferring pipe, a material guiding rotating plate is arranged on the material transferring support on one side of the material guiding pipe, the end part the lower side of a transferring guide plate is rotationally connected to the material transferring support, a material bearing rotating plate is arranged on the upper side of the transferring guide plate, and a material transferring belt ishorizontally arranged on the upper side of a conveying base. The sorting and conveying mechanism has the advantages that the structural design is reasonable, the groove workpieces can be convenientlyand efficiently subjected to directional arrangement in the discharging process, automatic overturning and conveying of the groove workpieces can be realized, the workpiece feeding and conveying automation degree is improved, and the requirements of production and use are met.

The invention relates to a high-pressure pipeline rapid connector. The rapid connector comprises a first connector body and a second connector body which are provided with butt joint ends. The other ends of the first connector body and the second connector body are separately used for being connected with an upstream high-pressure pipeline and a downstream high-pressure pipeline. The butt joint ends of the first connector body and the second connector body are correspondingly provided with a first one-way valve and a second one-way valve which communicate with each other in an inserted mode. A first spring arranged on the first one-way valve is larger than a second spring arranged on the second one-way valve in elastic force. A fastening device used for controlling connecting on-off of the second one-way valve and the first one-way valve is arranged between the first one-way valve and the second one-way valve. When the first one-way valve and the second one-way valve are connected in an inserted mode, under the elastic force effect of the second spring, the second one-way valve is firstly opened and then pushes the first one-way valve to be opened and to communicate with the second one-way valve. The high-pressure pipeline rapid connector is reasonable in design, compact in structure, good in airtightness, easy and convenient to operate and rapid in connection, the flow area and flow of a flow channel after communication are stable, and a large flow coefficient is achieved.

The entrance guard device includes a central sleeve on the substrate, bearing supported ratchet wheel mandrel inside the sleeve; three-pole chassis with three-pole rotating carriage connected to metal rods; emergency opening unit mounted also on the chassis and capable of opening by the automatically falling rod in power failure; and central disc behind the ratchet wheel mandrel and connected viakey, vertical sleeve and screw to the ratchet wheel and internal cam for rotating freely inside the central sleeve. The ratchet wheel limited by the right and left shift forks rotates in right direction or inversely, and so does the front three poles, so that one pole of the three is made to stay in horizontal position or rotate to reach the aim of shutting down or opening the door.

Disclosed is a handheld sweet osmanthus flower harvesting device. The handheld sweet osmanthus flower harvesting device comprises a tree branch beating device and a sweet osmanthus flower storage device used to collect sweet osmanthus flowers which are beaten down, wherein the tree branch beating device comprises a support rod of adjustable height, an electromagnetic poke device is installed at the top of the support rod, the electromagnetic poke device comprises a direct current loop circuit formed by connecting a direct current power source, an electronic switch and an armature winding through a lead wire, the armature winding is placed between paired magnetic poles, a poke rod which can follow the armature winding to rotate is installed on a position of the outer side of the armature winding, which is located in the direction of the center axis of the armature winding, through a winding rotation shaft, the sweet osmanthus flower storage device comprises a sweet osmanthus flower collection cloth with a round hole in the center and sizing steel wires arranged on the periphery of the sweet osmanthus flower collection cloth, the sweet osmanthus flower collection cloth is provided with a seam which extends from the center to the peripheral edge of the sweet osmanthus flower collection cloth, and a plurality of pairs of magnets are evenly distributed on two sides of the seam. The handheld sweet osmanthus flower harvesting device is simple to carry and easily used for field work, can improves harvesting efficiency and harvesting quality of the sweet osmanthus flowers, and has obvious economic value.

The invention discloses a molding die for sheet materials with reversed bound edges, which comprises an upper die assembly and a lower die assembly; the upper die assembly comprises an upper die base, an upper pressing plate, a pressing spring, an inclined slide block, an inclined punch, a guide block, an upper die spring, a slide block reset spring, and a spring stop; the lower die assembly comprises a lower die base, a lower die plate, a lower die slide block, a lower demolding plate, a lower die spring; the inclined punch has a first inclined guiding surface; the inclined slide block has a second inclined guiding surface; the slide block reset spring is disposed between the spring stop and the inclined slide block, and pushes the second inclined guiding surface to cling to the first inclined guiding surface; at the other side for forming inclined guiding surface, the second the inclined slide block is also provided with a convex particle for forming the reversed bound edge; a groove is formed between the lower die slide block and the lower die plate; when the upper die assembly and the lower die assembly are combined to form a molding cavity, the convex particle is engaged with the groove. The invention can fully automatically realize molding of sheet materials and their reversed bound edge structures, and has the characteristics of simple operation and convenience.

The invention discloses an automatically cleaning suction nozzle. The suction nozzle comprises a suction nozzle housing, a cleaning needle driven by a piston is arranged in the suction nozzle housing, the lower part of the piston is provided with a return spring, and the side of the piston is provided with a gap for the gas circulation. The cleaning needle is driven by the piston, the piston is in an upward floating state under the action of elastic force of the return spring when the suction nozzle is in a negative pressure environment, seed suction channels are guaranteed to be unblocked through the side gaps, and suction nozzles are exposed to complete the seed adsorption; and in the seed sowing process, the instant the negative pressure of a vacuum generator is transmitted to positive pressure, the piston acted by outside force overcomes the elastic force of the return spring and downward moves, and the cleaning needle penetrates into the suction nozzle apertures to poke out foreign materials, so the cleaning of the suction nozzle apertures is completed. The suction nozzle of the invention, which has the advantages of simple structure and reliable motion, can satisfy low cleanliness seed suction and sowing operations of a seeder.

The invention relates to agricultural production equipment, and discloses an automatic ventilation device of a vegetable greenhouse. The automatic ventilation device of the vegetable greenhouse mainly comprises an air pushing cylinder, an air pushing assembly, a fresh air assembly, an electric contact thermometer, a controller and an automatic ventilation actuator, wherein the air pushing cylinder is connected on the air pushing assembly, the air pushing assembly is arranged on the roof of the vegetable greenhouse, and an air pushing ventilation door is arranged on an air suction opening of the air pushing assembly. The automatic ventilation actuator comprises an air pushing driving motor, a speed changing box, a driving gear and a driven gear, wherein the driving gear is mounted on a driven shaft of the speed changing box and meshed with the driven gear, and the driven gear is coupled on a curved plate wheel of the air pushing ventilation door through an elastic clutch. A fresh air ventilation door is arranged inside the fresh air assembly, and a rotating shaft of the fresh air ventilation door is connected on a rotating shaft of a fresh air driving motor. The controller is in electric connection with the electric contact thermometer, the motors and a power port through wires. The automatic ventilation device of the vegetable greenhouse can save a large amount of manpower and prolong the service life of a plastic film at the same time.

The invention discloses a novel anti-capsizing device for ships, -relates to the technical field of ships, includes the hull and bottom unit; A bottom device is arranged at the bottom of the hull, thebottom device comprises a rectangular steel frame, central keel, - telescopic device, A central keel is arranged at the central position inside the rectangular steel frame, two expansion and contraction devices are arranged inside the rectangular steel frame, the telescopic device comprises a retracting and releasing mechanism, telescopic mechanism, balanced floating plate, gear transmission mechanism, driving mechanism, high power intelligent motor and frame, A telescopic device is telescopically spread and attached to that water surface by a balanced floating plate, to maintain a stable condition of the ship at low speeds or moorings, The invention improves the safety and stability of the ship when sailing at sea, locks the telescopic device at high speed through the driving mechanism,avoids the influence of external environment on the telescopic device, and opens the telescopic device at low speed or mooring state, so as to facilitate the adjustment of the telescopic device to keep the ship stable.

The invention discloses a gas detector with a battery fool-proof function. When a battery cavity body is not provided with a battery, one end of a sliding block protrudes in the battery cavity body under an elastic effect of an elastic piece, a fool-proof boss on the sliding block is not overlapped with a pool-proof groove in a battery cover, and the battery cover cannot side slide to cover the battery cavity body and a covering board. When the battery cavity body is provided with the battery, the battery can squeeze and sliding block to enable the sliding block to overcome elasticity of the elastic piece and to move towards the direction of the covering board, so that the sliding block drives the fool-proof boss on the sliding block to move on a strip-shaped through hole. After fool-proof boss moves to a certain position, the pool-proof boss is overlapped with the fool-proof groove and enters the fool-proof groove, the battery cover side slides on the sliding groove to cover the battery cavity body and the covering board, and assembling steps of the battery are finished. Compared with the prior art, under the situation that the battery is not assembled, a user cannot cover the battery cover, so that the user is reminded of assembling the battery, and error judgment is avoided.

The invention discloses a high strength and energy saving flexible bridge frame, which includes a bridge frame shell. The bridge frame shell is externally provided with a protective coating formed by paint, and the paint is composed of polyurethane, epoxy resin, acrylic resin, polytetrafluoroethylene, polyethylene glycol, butanediol, linseed oil, alumina, ceramic powder, silicon powder, cerium oxide, a solvent, a curing agent, aluminum potassium sulfate and sodium fluosilicate. Due to adoption of polyurethane, epoxy resin, acrylic resin and polytetrafluoroethylene by the invention, the high crosslinking density paint can be formed through mutual synergistic effects of the resins. The paint has extremely high surface hardness, excellent flexibility, bending resistance and flexibility, and excellent physical and mechanical properties, thus being able to avoid stress concentration. Therefore, the film formed by the paint has very good tensile strength, tear strength and stone impact resistance, thereby ensuring the service life of the bridge frame.

The invention discloses a novel engine oil dipstick. The dipstick comprises a handle, a lock catch, an oil dipstick core, and a guide tube, the end of the handle is sleeved with the lock catch, two locking grooves are respectively formed in the lower ends of the left and right sides of the lock catch, two short pins are respectively arranged at the left and right sides of the top end of the guide tube, and the two short pins are matched with the corresponding locking grooves to achieve self-lock of the guide tube and the lock catch; a vertical blind hole is formed in the middle of the bottom end of the handle, the oil dipstick core is fixed in the blind hole, the oil dipstick core penetrates through an cavity in the lock catch and the center of the guide tube from top to bottom in sequence, a ball valve and an air evacuation valve spring are arranged in the blind hole, the ball valve is pressed on the upper end face of the oil dipstick core by the air evacuation valve spring, and therefore a center hole of the oil dipstick core is sealed; a vent hole communicated with the top of the blind hole is formed in one side of the handle; a baffle is arranged in the cavity of the lock catch, and the baffle is pressed on the top face of the guide tube by a down press spring located on the top of the baffle. The novel engine oil dipstick has the advantages of providing a long-term and stable oil dipstick anti-loose scheme and a reliable crankcase pressure control scheme.

The invention belongs to the field of new energy, and particularly relates to a solar water heater with a heat collecting pipe self-descaling function. The solar water heater comprises a water storagetank and a plurality of heat collecting pipes fixedly communicating with the water storage tank, wherein a plurality of descaling plates are arranged in the heat collecting pipes and are arranged perpendicular to the axial directions of the heat collecting pipes, the side walls of outer rings of the descaling plates abut against the inner side walls of the heat collecting pipes and slide, the plurality of descaling plates are all made of ferrite magnetic materials, and the same poles of every two adjacent descaling plates repel each other; and openings in the lower ends of the heat collectingpipes are provided with and rotationally connected with a tubular water scale collecting box in a sealed mode, a scale collecting hole is formed in the side wall of the water scale collecting box, the water scale collecting box communicates with the heat collecting pipes through the scale collecting hole, and a threaded column is fixedly connected to the side wall of the water scale collecting box. According to the solar water heater with the heat collecting pipe self-descaling function, the plurality of descaling plates can be driven to slide on the inner walls of the heat collecting pipes through the temperature change of water bodies in the heat collecting pipes, so that water scale is scraped away, and the influence of the water scale on the heat exchange effect of the heat collectingpipes is avoided.

The invention relates to the technical field of abdominal cavity drainage tube indwelling, and discloses abdominal cavity drainage tube indwelling equipment for hematologic tumor caring. The abdominalcavity drainage tube indwelling equipment comprises a box body, clamping pieces are movably connected to the two side walls in the box body correspondingly, pushing rods are slidably connected to theend, away from the box body, of the clamping pieces, piston blocks are slidably connected to the surfaces of the pushing rods, spring rods are movably connected to the ends, away from the pushing rods, of the piston blocks, an airflow groove is formed in the box body, and a drainage tube is fixedly connected to the end, away from the box body, of the airflow groove. When liquid flow exists on thesurface of a load bearing net, the generated pressure is the same as elastic force for overcoming shrinkage of the spring rods; when the drainage tube is blocked, the liquid flow cannot reach the surface of the load bearing net, thus the load bearing net does not provide force for overcoming shrinkage of the spring rods any more, the spring rods pull the piston blocks to shrink inwards, an air block belt is attracted to move under clamping of a limiting piece in the direction away from a fixing bag, released gas directly enters the drainage tube, and thus the effect that dredging can be conducted immediately when blockage occurs is achieved.

The invention provides a portable type wine bottle packaging box capable of being reutilized. Two clamping hoops are arranged on the bottom of a box body of the portable type wine bottle packaging box; springs are separately arranged between the box body and the clamping hoops; under action of the springs, the clamping hoops are folded to form a cylindrical space; and pulling-holding mechanisms capable of overcoming spring force to separate the two clamping hooks are further arranged on the clamping hoops. The portable type wine bottle packaging box capable of being reutilized provided by the invention can clamp wine bottles into the folded clamping hooks under the action of the spring force, so that the effects of fixing and preventing dropping are achieved; when the wine bottles need to be taken out, the pulling-holding mechanisms are pulled and the folded clamping hoops are separated for easily taking out the wine bottles, so that damages on the packaging box are avoided, and the packaging box can be reutilized, and therefore, resources and energy consumption are saved, and cost is reduced.

In a piece of electronic equipment disclosed by the invention, a shell is provided with a first through hole and a second through hole, a manual driving mechanism can drive a driven device to extend out of the shell through the first through hole, a push rod is movably arranged on the shell, a first end of the push rod passes through the second through hole and extends out of the shell, a second end of the push rod is hinged to a first end of each first lever, a second end of each first lever is a first hitching part, the driven device is provided with second hitching parts, one end of an elastic piece is fixed in the shell, and the other end of the elastic piece is elastically connected with the driven device. The push rod drives the first levers to be switched between a first position and a second position. When the first levers are in the first position, the first hitching parts and the second hitching parts are matched in a hitching way, and the driven device is located in the shell. When the first levers are in the second position, the first hitching parts and the second hitching parts are separated, and the driven device is at least partially located in the shell. The schemecan solve the problem of high manufacturing cost of electronic equipment.

The invention relates to a storage and taking device of a high-voltage grounding wire. The storage and taking device comprises an underframe, and a lifting base is mounted on the underframe; a box body is arranged on the lifting base; a hand wheel driving mechanism is mounted on one outer side wall of the box body; a rotary table is rotatably mounted at the bottom of the box body; a plurality of rotating racks are mounted on the circumference of the top surface of the rotary table at intervals; the top ends of the rotating racks are connected on a disc; the disc is rotatably connected on the top wall of the box body; the rotating racks comprise bottom plates, top plates and a plurality of supporting rods which are connected between the bottom plates and the top plates and are circularly arranged at intervals; the bottom plates are rotatably mounted on the rotary table; the top plates are rotatably connected at the bottom of the disc; annular hanging racks are fixedly mounted at the tops of the rotating racks; a plurality of upper hanging rods are circularly arranged on the annular hanging racks; one sliding sleeve is mounted at the bottom of each supporting rod in a sliding manner; locking nuts are mounted on the sliding sleeves; and lower hanging rods corresponding to the upper hanging rods are further mounted on the sliding sleeves. According to the storage and taking device, structure is simple, operation and control are flexible and convenient, labor intensity of working personnel is greatly reduced, and working efficiency is improved.

The invention relates to a numerical value control device and a control method for a machine tool. A machine tool has a main shaft rotatably arranged at a main shaft head, a pull rod arranged on the main shaft and capable of clamping a knife handle on the main shaft under the function of elastic force of a clamping spring and a loosening operation part, the loosening operation unit has a cam witha cam surface formed by a linear part and an inclined part and a roller in sliding contact with the cam, and the loosening operation part can overcome the elastic force of the clamping spring to release the clamping state of the knife handle relative to the main shaft. The mounting state of the knife handle is judged based on difference between elastic force of the clamping spring in each positionof the main shaft head and elastic force of the clamping spring when the roller and the linear part of the cam are in contact.

The invention provides a ball injector and a thickened oil injection and production integrated pipe column using the same. The ball injector comprises a ball loading pipe and a ball outlet joint, wherein the ball outlet joint is connected below the ball loading pipe; an upper baffle is arranged at the upper end of the ball loading pipe and a lower baffle is arranged at the lower end of the ball loading pipe; the lower baffle is made of a hot melting material; a ball outlet hole is formed in the side wall of the ball outlet joint; a guiding element is arranged in the ball outlet joint; a ball outlet baffle is hinged at the ball outlet hole; a stopping surface which is in stopping cooperation with the ball outlet baffle in the internal-external direction so as to prevent the ball outlet baffle from swinging inwards is arranged at the ball outlet hole; and an elastic element which applies elastic force on the ball outlet baffle to ensure that the ball outlet baffle is in stopping cooperation with the stopping surface to keep a closed state is also arranged at the ball outlet hole. The injection operation and production operation can be realized through lowering the pipe column for once, so that the operation is simplified; a ball receiver is saved and the ball injector is only responsible for ball injection and the injected ball is not recovered any more; and the outer diameter ofthe ball injection can be as small as possible to be suitable for the ball injection operation of the casing deformation wells and small cased wells, so that the application range is wide.

The invention belongs to the field of office equipment, and particularly relates to a cooling type mistaken touch prevention keyboard which comprises a base, a plurality of keys and a signal feedbackpiece, a plurality of grooves is formed in the upper side wall of the base, a fixing box is connected into each groove through a reset spring, and the signal feedback piece is installed on the inner bottom face of the groove. Each fixing box is internally provided with four vertically-arranged inclined plates, each inclined plate is slidably connected with the inner side wall of the correspondingfixing box, a spring is fixedly connected between each inclined plate and the inner side wall of the corresponding fixing box, and the side wall of the end, close to the side wall of the correspondingfixing box, of each inclined plate is fixedly connected with a horizontally-arranged push rod. The other end of each push rod extends out of the fixed box and is fixedly connected with a push plate with teeth on the side wall. Cooling liquid can flow in the fixing box along with up-down movement of the trapezoidal block, so that heat generated in the using process of the electronic element is taken away, the cooling effect is achieved, and the situation that the service life of the electronic element is shortened due to the fact that the electronic element is located in a high-temperature environment for a long time is avoided.

The invention provides a self-adaptive road surface deceleration strip. The self-adaptive road surface deceleration strip comprises a base located below a road surface and a deceleration strip locatedat an opening of the road surface, wherein a horizontal limiting shaft is hinged to one end of the deceleration strip, the other end is provided with pawl iron, a horizontal guide plate and a horizontal limiting plate are arranged on the base, one end of the horizontal limiting shaft is slidably connected to the horizontal guide plate, the other end is slidably connected to the horizontal limiting plate, a horizontal spring check ring is arranged on the horizontal limiting shaft, a horizontal spring is arranged on the horizontal limiting shaft, a horizontal limiting locking nut is arranged onthe horizontal limiting shaft, a vertical limiting shaft is hinged to the middle of the deceleration strip, a vertical direction limiting plate is arranged on the base, a horizontal oblong hole is formed in the vertical direction limiting plate, and the vertical limiting shaft is inserted into the horizontal oblong hole, a vertical spring check ring is arranged in the middle of the vertical limiting shaft, a vertical spring is arranged on the vertical limiting shaft, and a vertical limiting locking nut is arranged at the end, which is away from the deceleration strip, of the vertical limitingshaft. The self-adaptive road surface deceleration strip provided by the invention is good in adaption effect.

The invention discloses a flue gas baffle door with a high sealing structure, and belongs to the field of flue gas baffle doors. According to the scheme, through mutual cooperation of storage grooves with sealing plates, sliding rods and reset springs and rotating shafts with first limiting blocks, second limiting blocks and eccentric pressing wheels, when an execution mechanism drives baffles to turn over, under the elastic action of limiting springs, the rotating shafts and the baffles cannot rotate relatively and rotate synchronously, when the baffles and a door frame are closed, the rotating shafts stop driving the baffles to rotate, the rotating shafts rotate relative to the baffles, at the moment, the limiting springs are pressed and contracted, the eccentric pressing wheels rotate relative to rotating grooves, the eccentric pressing wheels are pressed to extend to the sliding rods in the storage grooves from sliding grooves, and the adjacent sealing plates extend out of the storage grooves to form an opposite-closing sealing structure. Compared with a traditional flue gas baffle door, the flue gas baffle door has the advantages that flue gas can be effectively prevented from being exhausted from the adjacent gaps of the baffles, the sealing performance is high, the market prospect is achieved, and the flue gas baffle door is suitable for popularization.

The invention discloses a traffic warning board and mainly relates to a warning board. The traffic warning board comprises a solar cell panel and a device frame board. An alarm device, an identity card recognizer and a warning board body are arranged on the device frame board. The alarm device and a high-speed traffic management service terminal are connected through wireless signals. The identitycard recognizer and the high-speed traffic management service terminal are connected through wireless signals. The identity card recognizer controls the working state of the alarm device. A warning board lock connected with the identity card recognizer is arranged in the device frame board. The traffic warning board has the beneficial effects that the traffic warning board is a shared traffic warning board on an expressway, when an accident happens to a vehicle or the vehicle breaks down on the expressway, the traffic warning board can be taken and used instantly, a secondary traffic accidentis avoided, and the occurrence probability of the secondary traffic accident on the expressway is greatly reduced; and the traffic warning board facilitates accident location, an expressway traffic management service department can quickly lock the position of the accident vehicle or the breakdown vehicle, and following work can be finished conveniently and quickly.

The invention discloses a piano pedal auxiliary device capable of adjusting the height. The piano pedal auxiliary device comprises a base, a support, a pressing device and a vertical lifting device. The pressing device comprises an auxiliary pedal, a rapping hammer and a power transmission mechanism. The power transmission mechanism is used for transmitting the pressure borne by the auxiliary pedal to the rapping hammer and pushing the rapping hammer to vertically move so as to press the piano pedal. The pressing device further comprises a linkage mechanism. The linkage mechanism comprises a first lead screw transmission mechanism. The first lead screw transmission mechanism comprises a first lead screw and a first lead screw nut. The upper end of the first lead screw is installed on a third transmission block, and the lower end of the first lead screw vertically extends downwards. The position, making contact with the first lead screw, of the rapping hammer is provided with a recedinghole. The linkage mechanism further comprises a synchronous driving mechanism which is used for driving the first lead screw nut to rotate so that the first lead screw and the support can synchronously rise and fall. The piano pedal auxiliary device can adjust the height of a pedal so that the pedal can adapt to children at different heights.

The invention provides a fuse. The fuse comprises a support assembly, a fuse wire, a first connector structure and a second connector structure. The fuse wire runs through a fuse tube. The first connector structure comprises a first connector part, a first conductive part and a first elastic piece, wherein the first conductive part and the first elastic piece are arranged on the first connector part; the first connector part is movably arranged at the first end of the fuse tube; and the first elastic piece applies elastic force away from the first end of the fuse tube to the first connector part. The second connector structure comprises a second connector part and a second elastic piece arranged on the second connector part. The first end of the fuse wire is connected to the first connector part; the second end of the fuse wire is connected to the second connector part; the first end of the fuse wire and the first connector part move synchronously; and when the fuse wire is in a fusedstate, the first connector part moves upwards, the first conductive part is separated from the first end of the support assembly, and the second elastic part is separated from the fuse wire. Accordingto the technical scheme provided by the invention, the problems that the fuse wire is not easy to break quickly after overcurrent fusing and a relatively large electric arc is generated in the related technology are effectively solved.

The invention discloses a hydraulic distributor with a stop valve function. The hydraulic distributor comprises a valve body, wherein the valve body is provided with a valve rod cavity, a limiting shaft cavity and a stop valve cavity, a valve rod is arranged in the valve rod cavity in a sliding mode, a limiting shaft is arranged in the limiting shaft cavity in a sliding mode, and a stop valve is arranged in the stop valve cavity; the limiting shaft is provided with an annular groove, and a hydraulic control oil port communicating with a pressure oil port is formed in the intersection of the limiting shaft cavity and the stop valve cavity; a boss is arranged at the end of a valve element of the stop valve and corresponds to the annular groove of the limiting shaft in position; and a valve rod groove is formed in one end of the valve rod and is provided with an outer side end face and an inner side end face, the limiting shaft is fixedly connected with a shifting fork, and the shifting fork is arranged in the valve rod groove in a sleeving mode. When the hydraulic control distributor is located in the ascending, descending and floating working positions, the stop valve can be automatically opened and kept without an electric control system and a linear actuating mechanism, and the structure is simple.

The invention relates to a movable type ground wire box. The movable type ground wire box comprises a bottom frame; a lifting base is arranged on the bottom frame; a box body is arranged on the lifting base; a rotating table is rotationally arranged at the bottom of the box body; a transverse transmission shaft is rotationally arranged at the bottom of the box body in a penetrating mode; the rotating table is in power connection with the inner extending end of the transverse transmission shaft through a gear transmission mechanism; the outer extending end of the transverse transmission shaft is connected with a ratchet wheel sleeve; a pedal is connected to the ratchet wheel sleeve; a tension spring is connected to the pedal; the top end of the tension spring is connected to the outer side wall of the box body; a plurality of rotating frames which are vertically arranged are arranged on the top surface of the rotating table; the top ends of the rotating frames are connected to a disc, and the disc is rotationally connected to the top wall of the box body; the rotating frames each comprise a base plate, a top plate and supporting rods; annular hanging frames are fixedly arranged at the tops of the rotating frames; a plurality of upper hanging rods are annularly arranged on the annular hanging frames; and the bottoms of the supporting rods are provided with lower hanging rods in a sliding mode. The movable type ground wire box has the advantages that the structure is simple, the control is flexible and convenient, the labor intensity of workers can be greatly reduced, and the working efficiency can be improved.

The invention discloses a hydraulic sleeve scraping device and method. The hydraulic sleeve scraping device comprises an outer sleeve part and a core bar part arranged in the outer sleeve part; the outer sleeve part comprises a piston cylinder, a spline body and a scraper body; an upper joint is in threaded connection with the upper end of the piston cylinder, and the lower end of the piston cylinder is in threaded connection with the upper end of the spline body; and the scraper body is fixedly connected to the lower end of the spline body through a locking screw. The sleeve scraping device can be put into a well together with a well drilling tool, and when sleeve scraping is not needed, the sleeve scraping device only serves as a part of the drilling tool to achieve the effects of connecting and power transmitting; when a well drilling process is normally implemented, a push broach shaft in the tool is located on the mounting position all the time under the elastic effect of an internal spring, and a push broach body is not expanded; and when sleeve scraping is needed, the push broach shaft can move downwards and pushes the scraper body away to conduct sleeve scraping only by increasing the mud displacement and overcoming elastic force of the spring.

The invention relates to a humidifier. The humidifier comprises a machine body, a liquid injection cover and an elastic mechanism. The machine body is provided with a liquid injection port. The liquidinjection cover is mounted on the machine body through the elastic mechanism. The liquid injection cover can move to close the liquid injection port under the action o the elastic mechanism. The liquid injection cover can overcome elastic force of the elastic mechanism and open the liquid injection port under the action of external liquid. Through the humidifier, liquid adding is convenient and fast.

The invention provides a miniature electromagnetic brake. The miniature electromagnetic brake comprises a magnetic yoke, a coil, a spring, armature, a friction plate, a copper bush and a connecting plate, wherein the coil is arranged in the magnetic yoke; the connecting plate is connected to the left end surface of the magnetic yoke through the copper bush; the connecting plate and the copper bush are fixed through a bolt; the armature is freely and slidably connected into the copper bush; the friction plate is arranged between the armature and the connecting plate. The miniature electromagnetic brake has the beneficial effects that the area of the armature can be effectively increased, a relatively strong brake control force is achieved, the integral structure is compact, and the miniature electromagnetic brake is more resistant to high temperature and wear because of the adoption of a torque drive mode of the friction plate and is more energy-saving during driving.