39results about How to "Play a stop role" patented technology

The invention discloses a yarn spool which is characterized by comprising a main spool, an extension spool and a spool cap. The extension spool is connected with the main spool in a threaded manner, the spool cap is connected with the extension spool in a threaded manner, the main spool, the extension spool and the spool cap are rotators, the spool cap is convex, and a retainer plate is formed at a free end of the main spool. The yarn spool consisting of the main spool, the extension spool and the spool cap in threaded manner is simple in structure, convenient to mount, firm in connection and durable. The retainer plate and the convex spool cap formed at two ends of the yarn spool have certain blocking effect to yarns on the spool, thereby guaranteeing the yarns against falling off the yarn spool.

The invention discloses a magnetic stop mechanism in a portable lifting device. The magnetic stop mechanism comprises a strongly magnetic sliding block group, a slideguide, a moving part with hangers and an adjusting roller, wherein a pair of strongly magnetic sliding blocks in the strongly magnetic sliding block group are separately absorbed on the two sides of the slideguide, the N poles and S poles of the pair of the strongly magnetic sliding blocks are arranged oppositely; the strongly magnetic sliding block group is embedded in the moving part with hangers; the slideguide is provided with a rack, the moving part with hangers is provided with a gear matched with the rack and a rotary handle used for rotating the gear; and the strongly magnetic sliding block is pushed by the moving part with hangers to move up and down along the slideguide. The magnetic stop mechanism of the invention utilizes magnetic adsorption to increase the viscous resistance between the moving part and the fixed part of the lifting device, thus realizing stable stop function without affecting free lifting and being applicable to instruments with accurate and light structure.

The invention provides a lens driving motor, a camera and a mobile terminal. The lens driving motor comprises a shell, an upper spring, a driving magnet, a driving coil, a lens supporting body and a lower cover assembly. The shell is arranged on the lower cover assembly to form an accommodating space between the shell and the lower cover assembly; the driving magnet, the driving coil and the lenssupporting body are all located in the accommodating space, the driving coil is arranged on the lens supporting body, the driving magnet is arranged corresponding to the driving coil, the upper springis arranged between the shell and the lens supporting body. The upper spring comprises an outer ring structure connected with the shell, an inner ring structure connected with the lens supporting body, and a middle structure through which the outer ring structure and the inner ring structure are connected. A plurality of protruding parts are arranged on the middle structure, and at least two protruding parts extend in the direction close to each other to form an oiling gap. The lens driving motor solves the problem of poor use performance of the lens driving motor in the prior art.

The invention discloses a steel wire rope coiling device. The steel wire rope coiling device comprises rotation wheels, transverse rods and stop devices. Each rotation wheel comprises an inner ring and an outer ring which are fixed through a supporting rod. The outer side faces of the outer rings are provided with installing grooves around the outer ring circumference. The stop devices are embedded in the installing grooves and can do the circumference movement around the outer rings. Each stop device comprises a base, a left stand column, a right stand column, an overturning plate, a rotationshaft and a spring, wherein the left stand column and the right stand column are fixed to the two ends of the base, the base is embedded in the corresponding installing groove, the width of the baseis larger than the width of the left stand column and the width of the right stand column, one end of the rotation shaft is hinged to the left stand column, the other end of the rotation shaft is hinged to the right stand column, and the side, close to the overturning plate, of the right stand column is provided with a limiting groove; and the overturning plate is in an isosceles trapezoid shape,the rotation shaft is arranged on the upper side of the lower bottom edge of the overturning plate and is integrally formed with the overturning plate, and the spring sleeves the part, between the left stand column and the overturning plate, of the rotation shaft. According to the steel wire rope coiling device, the stop devices are additionally arranged, the rope coiling device can be conveniently fixed in the usage and storage process, the rope coiling device is prevented from rolling at random, and the practicability of the rope coiling device is improved.

The invention relates to a steel spring structure, a bogie and a rail vehicle with same. The steel spring structure comprises an upper positioning groove and a lower positioning groove, a steel springassembly is arranged between the upper positioning groove and the lower positioning groove, the steel spring assembly comprises a steel spring inner ring and a steel spring outer ring, and a first rubber shock pad is arranged in the upper positioning groove. A second rubber shock pad is arranged in the lower positioning groove, and a first extending end and a second extending end are matched to form a vertical stop. The bogie comprises a bogie support and mounting seats, a steel spring structure is arranged between the bogie support and the mounting seats, a traction rod is arranged between the bogie support and a railway vehicle body, and an anti-nodding device, a vertical shock absorber and a transverse shock absorber are arranged between each mounting seat and the railway vehicle body.And a transverse stopper is arranged between each mounting seat and the bogie support. The purpose of double supporting is achieved through the steel spring assembly, transverse displacement can be achieved through the vertical stop block, impact and vibration are reduced, and riding comfort is improved.

The invention provides an overload prevention combined type variable spring supporter and hanger utilizing a threaded rod to lock. The overload prevention combined type variable spring supporter and hanger structurally comprises an upper cover plate, a spring pressure plate, a spring, a spring housing and a lower cover plate, wherein the spring pressure plate is arranged between the upper cover plate and the lower cover plate; the spring is mounted between the lower surface of the spring pressure plate and the upper surface of the lower cover plate; the spring housing is arranged outside the spring; the upper end of the spring housing is connected with and fixed to the upper cover plate; the lower end of the spring housing is connected with and fixed to the lower cover plate; one of two locking bolts penetrate through a hole in the left side of the upper cover plate, a bayonet in the left side of the spring pressure plate, and a hole in the left side of the lower cover plate; and the other locking bolt penetrates through a hole in the right side of the upper cover plate, a bayonet in the right side of the spring pressure plate, and a hole in the right side of the lower cover plate.The overload prevention combined type variable spring supporter has the advantages that (1) precise locking can be realized according to a measured value, and error influence is avoided; (2) a setting value can be modified, no replacement is required, and the cost is reduced; (3) locking again can be realized during overhaul and the operation is facilitated; and (4) with the adoption of a combined structure, the service life of a product is prolonged.

The invention provides a cast-molded lifting hook. The lifting hook comprises a lifting ring, a connecting hole in the middle of the lifting ring, a hook part hinged to the lifting ring and a bearing hole formed in the central axis direction of the hook part; the lifting hook is characterized in that upper fixing shafts are arranged on two sides of the lifting ring; lower fixing shafts are arranged on two sides, close to the lifting ring, of the hook part; spring pieces are connected between the upper fixing shafts and the lower fixing shafts; reinforcing bodies are arranged on two sides of the bottom of the hook part and surround the central axis of the bearing hole; and a bulge body is arranged at the tail of the hook part. According to the lifting hook, elastic pieces are arranged between the lifting ring and the hook part and have a buffering effect, and the condition that a carried object is thrown out due to excessively large swing amplitude of the hook part in the running process is avoided; the position of the bearing hole is reinforced, and breakage under the relatively large stress is avoided; and the bulge body is added to the tail of the hook part and has a stop effect, and the potential safety hazard caused by the fact that the object slides along the bearing hole in the conveyed process and separates from the lifting hook is avoided.

The invention discloses a collecting pipe and a heat exchanger with the collecting pipe. The collecting pipe comprises a pipe body, a refrigerant cavity is formed inside the pipe body, the pipe wall of the pipe body is provided with multiple flat pipe grooves formed in the axial direction of the pipe body at intervals, a throttling portion is arranged between every two adjacent flat pipe grooves and located in the refrigerant cavity, and the cross sectional area of each throttling portion is smaller than that of the other part of the refrigerant cavity. According to the collecting pipe in theembodiment, refrigerants flowing into flat pipes tend to be uniform, and then the heat exchange effect of the heat exchanger is improved.

The invention provides a pressure plate locking device. The pressure plate locking device comprises: a housing, wherein a part of the housing is taken as a positioning holding portion and has a handleholding cavity for accommodating a pressure plate handle, when the positioning holding portion is located between the pressure plate handle and a pressure plate base, a plug of the pressure plate handle is in a state of separation from the conductive jack of the pressure plate base; a protruding structure having a protruding position and a retracted position relative to the housing, wherein whenthe pressure plate handle is in the handle holding cavity, the pressure plate handle can be locked with the positioning holding portion; and a lock body module configured to lock the protruding structure, wherein the lock body module is arranged in the lock body holding cavity of the housing, and has a lock state and an unlock state, when the lock body module is located in the locking state, the lock body module locks the protruding structure, and when the lock body module is in the unlock state, the lock body module unlocks the protruding structure. The problem of the safety hazard of the erroneous operation of the power wiring device is solved in the prior art.

The invention provides a nut taking device and nut driving equipment. The nut taking device comprises a taking assembly arranged movably, a first detection component and a scraping part, wherein the taking assembly comprises a taking connector, which is rotatably arranged to be sleeved with a nut; the first detection component has a detection position and is used for detecting whether the the taking connector is sleeved with the nut in a qualified mode or not by moving the nut sleeving the taking connector to the detection position; and the scraping part is provided with a scraping groove, and when it is judged that sleeving of the nut is unqualified, the taking connector is arranged in the scraping groove in a penetrating mode, the nut is located on one side of the scraping groove and abuts against the scraping part, and the taking connector moves towards the side, away from the nut, of the scraping groove, so that the nut is separated from the taking connector under the stop effect of the scraping part. According to the nut taking device, automatic nut picking work can be realized, so that the efficiency of nut driving operation is improved, and the problem that in the prior art, the production efficiency of nut driving operation on a compressor is low can be solved.

The invention provides a goods allocation type storage rack for a novel multifunctional automatic stereoscopic warehouse. The good allocation type storage rack comprises stand columns, cross beam devices, wall supports, movable devices, a back net, a cross support, protection legs and guiderails. The cross beam devices are perpendicularly connected with the stand columns; the wall supports are fixedly connected to the back parts of the stand columns; the movable devices are arranged on the upper parts of the two cross beam devices; the back net is connected between the two wall supports; the cross support is fixedly connected between the two stand columns; the protection legs are arranged on the front and back sides of the lower parts of the stand columns; and the guiderails are arranged on the left and right sides of the lower parts of the stand columns. With the arrangements of the cross beam rack, connection holes, brake plates and the protection legs, the stand columns can be protected by the protection legs, so service life of the storage rack can be prolonged; an inverted T shape can brake rolling wheels, so movements of the storage rack can be controlled and the storage rack can bear enough weight and manufacturing cost can be reduced; and resource can be reduced; and stable cross beam connection can be guaranteed and potential safety danger can be reduced.

The invention discloses a door structure of a special railway vehicle, and belongs to the field of railway vehicles. The door structure meets the transport requirements for high secrecy, safety and reliability of special vehicles used for transporting national defense safety components. The door structure comprises two sets of door leaves, locking mechanisms and an adjustable sealing mechanism. The door leaves in each set are connected through hinges. The two sets of door leaves are oppositely opened and connected with a vehicle body through hinges. An L-shaped rubber strip is arranged between the door leaves in each set, and L-shaped rubber strips are further arranged between the door leaves and the vehicle body. The two ends of the L-shaped rubber strips are hollow, installed at one ends of the door leaves and arranged in clamping grooves formed in the ends of the door leaves. The other ends, corresponding to the L-shaped rubber strips, of the door leaves or the vehicle body are in a step shape, and two platforms of each step make contact with the two ends of the corresponding L-shaped rubber strip respectively. The door structure has a quite large net passing width and a quite large net passing height, so that it is guaranteed that large weapons can pass through the vehicle door smoothly in the loading process; both sealing and locking of the vehicle door are achieved, so that transport requirements are met and transport safety is guaranteed.

The invention discloses a magnetomotive container transfer vehicle. The magnetomotive container transfer vehicle comprises a vehicle body, wheel sets, a permanent magnet, a plurality of drive windings, tracks and a calibrated wheel set, wherein the drive windings are arranged on the ground, the permanent magnet is arranged at the lower part of the vehicle body, the drive windings are used for converting electric energy into magnetic energy to interact with the permanent magnet, and the container transfer vehicle is pushed to run; the calibrated wheel set is mounted on at least one of the wheel sets, the calibrated wheel set is provided with an encoder for detecting the running speed and distance of the container transfer vehicle, the calibrated wheel set is used for stably pressing calibrated wheels on the tracks on the ground depending on the effect of a pressure spring, so that accurate running speed and distance detected by the encoder are guaranteed; the vehicle body comprises cross beams and longitudinal beams, the upper parts of the two ends of the longitudinal beams are welded with fixed baffle plates, a plurality of movable baffle plates are arranged in the length direction of the cross beams, and the fixed baffle plates and the movable baffle plates play a role in stopping containers. The magnetomotive container transfer vehicle is zero-pollution, zero-emission, high in degree of automation, high in work efficiency, low in comprehensive energy consumption and high in applicability.

The invention relates to the field of machine tool machining and cutting, and more specifically relates to an automatic feeding mechanism and method for machining a miniature machine tool. The automatic feeding mechanism and method for the miniature machine tool aim at solving the problem that no effective and practical feeding mechanism is available on the market at present. The automatic feedingmechanism comprises a transition plate fixed on the miniature machine tool and a driven lead screw which is in threaded connection with the miniature machine tool and transversely penetrates throughthe transition plate, wherein the end part of the driven lead screw is provided with a driven gear, the transition plate is provided with a fixed hinge shaft and an upper hinge shaft, the transition plate is movably connected with a swing plate, the swing plate is provided with a fixed hinge shaft hole and a kidney-shaped groove hole, and the other side, which is opposite to the kidney-shaped groove hole, of the swing plate is provided with a lower hinge shaft. The automatic feeding mechanism further comprises a gear motor and the lower hinge shaft, wherein the output shaft end of the gear motor is provided with a driving gear located on the same plane with the driven gear, the lower hinge shaft is movably connected with a fan-shaped shifting block, the fan-shaped shifting block comprisesa lower hinge shaft hole and a fan-shaped groove, and the fan-shaped plate drives the swing plate through the fan-shaped groove to realize the engagement and disengagement of the driving gear and thedriven gear.

The invention discloses a tennis training serving device which comprises a base, a middle plate rotating shaft is in the middle of the base, a first crankshaft hole is at the back side of the middle plate rotating shaft, a first eccentric shaft is at the upper part of a first crankshaft, a first rotating shaft is at the lower part of the first crankshaft, a bottom plate rotating hole is at the lower part of a middle plate, a first connecting rod shaft is at the back side of the bottom plate rotating hole, and a second crankshaft frame is at the upper part of the middle plate; the second crankshaft frame is provided with a second crankshaft hole, the front portion of the second crankshaft frame is provided with an upper plate frame, the upper portion of the upper plate frame is provided with an upper plate hole, a bottom plate rotating hole is rotationally connected with the middle plate rotating shaft, the bottom plate rotating hole rotates around the middle plate rotating shaft, the lower portion of the first rotating shaft is rotationally connected with the first crankshaft hole, and the first rotating shaft rotates in the first crankshaft hole. A second gear is fixedly connected to the upper part of the first rotating shaft, the first motor is fixedly connected with the base, an output shaft of the base is fixedly connected with a first gear, the first gear and the second gear are meshed with each other, and the rear side of a first connecting rod is rotationally connected with the first eccentric shaft.

The rapid connecting structure comprises a horizontal empennage butt joint beam, a vertical empennage box-shaped reinforcing piece, a stop flange and a stop piece, the horizontal empennage butt joint beam is a composite material round pipe, penetrates through a horizontal empennage rib web plate and is fixed to the rib web plate through the stop flange, the front end of the horizontal empennage butt joint beam is exposed out of a horizontal empennage, and the stop piece is fixed to the horizontal empennage box-shaped reinforcing piece. The front end of the horizontal empennage butt-joint beam is inserted into a butt-joint hole preset in the vertical empennage box-shaped reinforcing piece, the vertical empennage box-shaped reinforcing piece is of a composite laminated plate structure with a C-shaped section and is located at the end of a vertical empennage, and a stop hole is formed in the front end of the horizontal empennage butt-joint beam. In addition, the front end of the horizontal tail butt-joint beam is limited in an abdominal cavity on one side of the vertical tail box-shaped reinforcing piece through a retainer.

The invention discloses a farm tool trailer which comprises a sweeping board. A plurality of wheels are arranged at the bottom of the trailer board. A supporting board, a coaming and a hanging arm are arranged on the upper side of the trailer board. The coaming is located on the front side of the trailer board. The hanging arm is hinged to the front end of the trailer board. A hook is arranged at the front end of the hanging arm. An opening of the coaming faces one side of the supporting board. A plurality of partition boards are transversely arranged on the supporting board. According to the farm tool trailer, one end of a handle of a farm tool is placed into the coaming, the working end of the farm tool is arranged on the supporting board in a lapped mode, different farm tools are separated through the partition board on the supporting board, the stop effect is achieved, and even if the trailer is advanced on a bumpy road, the farm tools will not likely to be bumped out; the trailer board can be hung to other traffic tools through the hanging arm so as to replace manpower; the whole structure is simple and reliable, and the practicability is high.