404results about How to "Prevent springback" patented technology

The invention provides an offshore launch rocket stabilizing device which comprises a first anti-overturning device and a second anti-overturning device, the first anti-overturning device and the second anti-overturning device are fixedly connected with a launching pad, and the first anti-overturning device and the second anti-overturning device are connected to the two sides of a rocket in a supporting mode correspondingly; the first anti-overturning device and the second anti-overturning device are the same in structure; each of the first anti-overturning device and the second anti-overturning device comprises an anti-overturning device underframe, an anti-overturning arm and a bracket; the bottom end of the anti-overturning arm is installed on the anti-overturning device bottom frame, the bracket is fixedly connected to the top end of the anti-overturning arm, and the bracket is used for being fixedly connected to the side portion of a rocket body of a rocket in a clasping mode. The end, close to the rocket, of the bottom of the anti-overturning arm is rotationally connected with the anti-overturning device underframe, and the other end of the anti-overturning arm is supported on the anti-overturning device underframe through a supporting and rapid separating mechanism. After the rocket is erected and parked on the launching platform, the rocket body is stabilized, the rocket is prevented from toppling over, and the stability and safety of the rocket are improved.

The invention relates to the technical field of power distribution cabinet machining, in particular to a power distribution cabinet assembly automatic bending machining device which comprises a base, a conveying unit is installed at the upper end of the base, a correcting unit is installed on the conveying unit, and a leveling unit is installed on the correcting unit; according to the plate bending and correcting device, the correcting units are arranged to be clamped to the four corners of a plate, so that the bent positions of the front end and the rear end of the plate can be transversely arranged, and then the bent positions of the plate are prevented from inclining; the plates are accurately fed according to the distance between the ends of the plates and the bending machine, so that the bending precision of the plates is improved, and the overall strength of the assembled power distribution cabinet is ensured; according to the flattening device, the flattening plate is arranged to flatten the bent position of the plate under the action of the downward pressing spring rod, meanwhile, the hammering mechanism is arranged to flatten the bent position of the plate, and flattening of the uneven surface of the plate is further guaranteed.

The invention relates to the technical field of spring buffers, in particular to a springback impact prevention spring buffer which is characterized in that a pipe body and a fixing column are arranged on the surface of a positioning seat, a positioning rod is arranged in the fixing column, the surface of a supporting rod is sleeved with a limiting plate, a bottom plate is arranged at the bottom of the positioning rod, and a buffer rod is inserted into the fixing pipe; the surface of the buffer rod is sleeved with a first buffer spring, and a second buffer spring is arranged in the fixing pipe. The device has the beneficial effects that a first buffer spring and a second buffer spring are matched, a buffer rod is used for buffering and reducing impact force, then when the buffer rod is pressed to move downwards, a positioning rod can be pressed, and therefore the limiting effect of a positioning plate on a limiting plate can be lost, the limiting plate can be pushed through a second spring, and the service life of the limiting plate is prolonged. Therefore, one end of the fixing plate can be clamped into the positioning clamping groove, the buffer rod can be limited by inserting the fixing plate into the positioning clamping groove, and the situation that the buffer rod rebounds due to the fact that the first buffer spring and the second buffer spring are pressed is avoided.

The present invention relates to the technical field of fiber bundle fixed-length cutting, and discloses a yarn shearing device for chemical fiber yarn production, including: a yarn winding shearing machine, a winding box is provided on the front of the yarn winding shearing machine, and a group of rubbing and cutting mechanisms and a wire management mechanism are provided in the yarn penetration area of ​​the winding box. When the amount of yarn wound on the winding paper drum reaches a specified value, the wire management mechanism is embedded in the rubbing and cutting mechanism to cut the yarn, and tighten the yarn head away from one end of the winding paper drum. When the present invention is winding, the chemical fiber yarn is tightened, and once the yarn is cut, it will rebound, and then the staff needs to re-manage and thread the wire, so the wire pushing main board, the wire pushing auxiliary board, the wire passing board and the wire pressing middle board can clamp the yarn, which can effectively fix the yarn and prevent the yarn away from one end of the winding paper drum from rebounding.

The utility model discloses a VDI type turret turning and milling composite machine tool which comprises a base, a working shell is fixedly connected to the upper end face of the base, a center control panel is arranged on the working shell, a mechanical chuck is arranged on the inner wall of the working shell, and a supporting block is fixedly connected to the inner wall of the side, close to the base, of the working shell. A supporting block is arranged on the working shell, a guide rail is fixedly connected to one side wall of the supporting block, a connecting block is arranged on the inner wall of the working shell, a VDI tool turret is arranged on the connecting block, the connecting block is slidably connected to the guide rail, and an operation opening and a sliding groove are formed in the working shell. The closed protective door can be automatically fixed, the opened protective door can also be fixed, the protective door is prevented from rebounding, a user can conveniently carry out loading and unloading work, the portability of the device is improved, meanwhile, chippings generated in the machining process can be blown to the discharging opening to be discharged out of the working shell, and the working efficiency is improved. Automatic cleaning of the device is achieved, and the workload of workers is reduced.

A metal plate bending device for power distribution cabinet box plate processing relates to the technical field of metal plate bending processing, and comprises a mounting base, the mounting base is a horizontally arranged square table, a bending workbench is fixed on the mounting base, the bending workbench is a transversely extending square table, a conveying and feeding assembly and a primary bending assembly are respectively arranged on the bending workbench, and the primary bending assembly is fixed on the mounting base. A lifting transfer assembly, a sliding die assembly and a secondary bending assembly are arranged on the mounting base. The bending machine solves the problems that when a bending machine in the prior art is used for bending a box plate of a power distribution cabinet, the bending function is single, the bending machine is difficult to adapt to bending machining of a metal plate structure with a complex shape, repeated bending transferring feeding and clamping positioning are inconvenient, a bent part is prone to deformation and springback, and the machining precision is affected.

The invention relates to the technical field of fiber tow fixed-length cutting, and discloses a yarn shearing device for chemical fiber yarn production, which comprises a yarn winding and shearing machine, a winding box is arranged on the front side of the yarn winding and shearing machine, and a group of twisting and cutting mechanisms and a group of yarn arranging mechanisms are arranged in a yarn penetrating area of the winding box; when the amount of the yarn wound on the winding paper tube reaches a specified value, the yarn arranging mechanism is embedded into the twisting and cutting mechanism to cut off the yarn, and the yarn head far away from one end of the winding paper tube is tensioned. During winding, chemical fiber yarns are tensioned, once the yarns are cut off, the chemical fiber yarns can rebound, and then workers need to arrange and thread the yarns again, so that the yarns can be clamped by the yarn pushing main plate, the yarn pushing auxiliary plate, the yarn passing plate and the yarn pressing middle plate, the yarns can be effectively fixed, and the working efficiency is improved. And the yarn far away from one end of the winding paper tube is prevented from springback.

The utility model discloses an electric power test clamp for electric power detection, which comprises a test clamp body, the outer side of the test clamp body is rotatably connected with a rotating shaft, the front end of the test clamp body is fixedly connected with two groups of clamping mechanisms, and the test clamp body is respectively and fixedly connected with a protective sleeve through the two groups of clamping mechanisms. The opposite sides of the two sets of protective sleeves are fixedly connected with test tool bits. According to the electric power test clamp for electric power detection, the test clamp body is prevented from rebounding through limiting locking between the rack and the limiting teeth, inaccurate test data caused by looseness of the test tool bit is avoided, mutual clamping between the lower clamping plate and the upper clamping plate can be relieved through cooperation of the nut and the bolt, and the test clamp is convenient to use. And through cooperation between the connecting head and the connecting groove, the test tool bit can be conveniently replaced, and resource waste caused by overall replacement of the test clamp is prevented.

The utility model discloses a water-rich tunnel excavation supporting structure, and relates to the technical field of tunnel construction, the water-rich tunnel excavation supporting structure comprises a base and a moving mechanism used for driving the base to move, a supporting frame is fixedly arranged on the base, a front top plate and a rear top plate are fixedly arranged on the supporting frame, the front top plate and the rear top plate are both in an arc shape, and the moving mechanism is arranged on the base. The cambered surface radius of the front top plate is larger than that of the rear top plate, the front top plate is used for abutting against the tunnel wall, and a concrete spraying space is formed between the front top plate and the rear top plate. The rebound rate of the tunnel wall can be effectively controlled after concrete is sprayed to the water-rich section of the tunnel, and then the possibility that the tunnel vault collapses is reduced.

The utility model discloses an intelligent fingerprint lock with a battery easy to replace, which belongs to the technical field of fingerprint locks and comprises an intelligent fingerprint lock body, a battery body is arranged at one end in the intelligent fingerprint lock body, a cover is arranged on one side of the battery body, and a convenient switch component is arranged above the cover. A fingerprint reader is arranged at a slot of the intelligent fingerprint lock body, an operation panel is arranged above the fingerprint reader, a sliding cover is arranged above one side of the intelligent fingerprint lock body, a mounting plate is arranged in the sliding cover, a dismounting and mounting assembly is arranged above the mounting plate, and a sponge block is arranged on one side of the mounting plate. By arranging the convenient switch assembly, the cover can be rapidly opened and closed, the battery can be rapidly replaced, the structure is practical, by arranging the dismounting assembly, the sponge block can be conveniently dismounted and replaced when the sponge block becomes dirty or is abraded after long-time use, and the use practicability is improved.

The utility model discloses a flame-retardant cationic polyester composite yarn winding device which comprises a winding table and a winding box, the winding box is arranged in the middle of one side of the top of the winding table, a winding shaft is arranged on the portion, on one side of the winding box, of the winding table, a lead screw is arranged in the middle of the interior of the winding table, a transmission block is arranged on the lead screw, and the transmission block is connected with the winding table. And a threading block is arranged in the middle of one side of the transmission block, a dust collection box is arranged in the middle of the bottom of the side, away from the winding shaft, in the winding box, a cleaning block is arranged in the middle of the top of the dust collection box, an annular groove is formed in the middle of the interior of the cleaning block, and an annular brush is arranged on the inner side of the annular groove. The yarn winding device has the advantages that dust and chippings on the surface of yarn can be removed during uniform winding, the quality of the yarn is prevented from being affected by the dust and chippings, the yarn can be cut after winding is completed, and the yarn is prevented from falling off.

The utility model discloses a compression-resistant polymer storage battery, which belongs to the technical field of batteries and comprises a placing frame, buffer parts are arranged on two sides of the placing frame, a protective part is arranged at one end of each buffer part, a convenient mounting component is arranged at the joint of each protective part and each buffer part, and a storage battery body is arranged in the placing frame. The storage battery protection device is provided with a push rod, a clamping rod, a clamping sliding block and a clamping spring, so that a protection piece can be rapidly installed and fixed, a first limiting plate and a first handle are arranged, so that the push rod is conveniently limited and prevented from moving, and a second limiting plate and a second handle are arranged, so that when the protection piece is disassembled, the protection piece can be conveniently disassembled, and the storage battery protection device is convenient to use. According to the storage battery placing frame, the fixing insertion rod, the fixing block, the pull rod, the fixing sliding block, the fixing spring and the fixing plate are arranged, so that the storage battery body and the placing frame are convenient to assemble and use.

The utility model discloses a kind of multi-pass solenoid valve with power connection plate, comprising: multiple valve bodies and power connection plate, each valve body has a pair of same direction projecting insert, the power connection plate includes: multiple metal sheets for the conductive connection of the insert and power supply, and plastic layer covering the metal sheet, the metal sheet has wiring end connected with power supply and insert connection plug-in end, the plastic layer exposes the wiring end and the plug-in end, characterized in that, between adjacent two metal sheets, there is the bending part formed by punching cutting, the plastic layer is provided with at least part recess of covering the bending part, to prevent the rebound of bending part, thereby avoid the short circuit problem that multi-pass solenoid valve appears when working.

This utility model discloses a bag-folding mechanism for a bag-opening machine, including a worktable with a positioning window. An upper folding knife assembly and a lower folding knife assembly are correspondingly arranged above and below the positioning window. The upper folding knife assembly includes a lifting and lowering fixed plate, upper left and upper right folding knives mounted on the fixed plate, and front and rear folding knives arranged horizontally. The lower folding knife assembly includes a lifting and lowering mounting plate and lower left and lower right folding knives arranged horizontally on the mounting plate. The upper folding knife assembly descends into the cut bag opening. The front and rear folding knives move back and forth to fold the front and rear edges of the bag opening. The upper left and upper right folding knives descend synchronously with the fixed plate to fold the left and right edges of the bag opening downwards. Then, the lower left and lower right folding knives of the lower folding knife assembly move horizontally left and right to further fold the downward-folded left and right edges and press and shape the folded edges, ensuring the quality of subsequent bag opening sewing.

The utility model relates to cable production technical field especially is a kind of cable straightening equipment, including mounting plate, mounting plate is provided with two and is symmetrically distributed before and after, the four corners of two mounting plates are all provided with mounting hole, the opposite end of two mounting plates is all fixedly connected with slide rail, straightening mechanism is slidably connected between two mounting plates, two stands are symmetrically fixedly installed in the upper end of the mounting plate located rear part, one end of a stand is fixedly installed with one positive and negative motor, the output of one positive and negative motor is fixedly connected with ball screw, ball screw is screw-connected with the rear part of straightening mechanism. The utility model discloses a kind of cable straightening equipment, reciprocating motion is driven by ball screw straightening mechanism, realize the stable feeding of cable and continuous straightening;While using the multiple straightening wheels of annular distribution, realize automatic adaptation different diameter cable with adjusting disc cooperation, improve straightening efficiency and versatility, applicable to the efficient processing and automatic production of multiple specifications cable.

The present invention belongs to the technical field of steel coil shearing, and specifically is a steel coil shearing machine, comprising a machine body; feeding units are arranged at both ends of an inner cavity of the machine body; a cutting unit is arranged in the middle of the inner cavity of the machine body; the cutting unit comprises a cutting fixing frame; the cutting fixing frame is fixedly connected to the middle of the inner cavity of the machine body; a fixed cutting knife is arranged at the bottom of the inner circle of the cutting fixing frame; a pressing assembly is arranged on the top of the cutting fixing frame; a moving cutting knife is arranged at the bottom of the pressing assembly; the pressing assembly pushes the moving cutting knife to move downward, and cooperates with the fixed cutting knife to cut off the deformed end of the steel coil material strip; thereby avoiding high-temperature splashing generated during the cutting of the steel coil material, rebounding when the steel coil material strip is disconnected, and falling of the deformed steel coil; reducing the probability of danger to the staff, facilitating the operation of the staff, and improving the work efficiency of the staff.

The utility model discloses a sealing device for carton packaging, which belongs to the technical field of carton packaging and comprises a base, a pressing component is arranged on one side of the base, a circular seat is arranged at one end of the pressing component, adhesive tape is sleeved on the surface of the circular seat, a component convenient to disassemble and assemble is arranged at one end of the circular seat, and a placing tray is arranged above the base. According to the adhesive tape replacing device, the square inserting blocks, the clamping bases, the clamping rods, the clamping blocks, the clamping sliding blocks and the clamping springs are arranged, so that adhesive tape can be rapidly replaced, the limiting rods, the limiting sliding blocks and the limiting springs are arranged, after the clamping rods are pressed down, the adhesive tape can be conveniently replaced, and the adhesive tape can be rapidly replaced. According to the carton fixing device, the limiting base, the two-way threaded lead screw, the rotating handle, the square sliding block, the connecting block and the limiting plate are arranged, so that cartons of different specifications can be conveniently limited and fixed.

The present invention relates to the field of contact terminal processing, and specifically to a processing device for contact pieces of electronic components and a bending method thereof, comprising a pre-fixing mechanism, which is used for pre-clamping processing of contact terminals, a processing table being fixedly installed on the outer side of the pre-fixing mechanism; a clamping mechanism, which is used for fixing processing of the required bending part of the contact terminal; a bending mechanism, which is used for bending processing of the contact terminal; a support frame being fixedly installed on the outer side of the processing table, the bending mechanism being arranged inside the processing table, and the clamping mechanism being arranged on the top of the processing table. The processing device for contact pieces of electronic components and the bending method thereof will move to the right along a short track through a double insertion strip, and the other end thereof will also slightly squeeze the bent contact terminal for a second time, thereby preventing the contact terminal from being subjected to incomplete force and causing a certain degree of rebound, resulting in the actual bending angle being inconsistent with the expected angle.

This invention relates to the field of adhesive coating technology and discloses an adhesive coating device for an induction cooker panel, including a base, a linear guide rail on the base, a spray gun fixedly mounted on the linear guide rail, the spray gun including an adhesive supply pipe and a movable nozzle, a back suction valve on the adhesive supply pipe, a fixed pipe connecting the adhesive supply pipe and the movable nozzle, the fixed pipe being fixedly connected to the linear guide rail, a limit cylinder coaxially fixedly mounted on the fixed pipe, the movable nozzle coaxially mounted inside the limit cylinder and connected to the fixed pipe through a cylindrical elastic membrane, a magnet fixedly mounted on the movable nozzle, and a winding coaxially mounted on the limit cylinder; this application achieves rapid stretching and breaking of the adhesive by driving the movable nozzle to rotate circumferentially and causing the elastic membrane to undergo helical torsional deformation, forming an axial tensile force that drives the movable nozzle to move axially, thereby achieving rapid stretching of the adhesive and breaking it. At the same time, combined with the back suction effect of the back suction valve and the pressure-holding design of the elastic membrane, it effectively solves the problem of easy stringing of the adhesive at the end of the coating process.

The utility model discloses an integrated water heater display panel, which belongs to the technical field of integrated water heaters and is applied to an integrated water heater shell, a display panel body is arranged in the integrated water heater shell, and a fixing component is arranged at the joint of the integrated water heater shell and the display panel body. The display panel comprises a display panel body, a fixing seat, a square inserting block, a fixing block, a pull rod, a fixing sliding block and a fixing spring are arranged on the display panel body, a clamping assembly is arranged on one side of the display panel body, a display circuit board is arranged in the clamping assembly, and a signal line is arranged below the display circuit board. A clamping block, a clamping rod, a clamping sliding block and a clamping spring are arranged, so that after the fixing block is pulled out, the fixing block can be conveniently limited and fixed, and the fixing block is prevented from rebounding; according to the utility model, the clamping seat, the clamping plate, the fastening screw rod, the bearing and the guide block are arranged, so that the display circuit board can be quickly disassembled and assembled.

The utility model discloses a 10kV vacuum circuit breaker, which comprises an operating mechanism, a main shaft, a pull plate, an insulating pull rod, an arc extinguish chamber and a buffer mechanism, a moving contact and a static contact are arranged in the arc extinguish chamber; one end of the insulating pull rod is connected with the moving contact, and the other end is connected with the main shaft through a pull plate; the operating mechanism is connected with the main shaft and provides driving force for the main shaft. And a buffer mechanism is arranged at one end of the main shaft. The buffer mechanism is arranged to absorb kinetic energy during opening and closing, and the contact is prevented from swinging back and forth.

The utility model discloses a wall tile leveling device for indoor decoration, which belongs to the technical field of indoor decoration, aims to solve the problem of high labor intensity caused by the fact that a rubber plate needs to be pressed all the time during use, and comprises a supporting plate, a convex frame is fixedly connected to the top of the supporting plate, and limiting blocks are slidably connected to the inner walls of the two sides of the convex frame. According to the wall tile leveling device, the two pressing plates are arranged, when the wall tile leveling device is used, the two pressing plates are pressed at the joint of two wall tiles, the threaded rod is rotated to drive the driving block to descend, the driving block descends to drive the two first connecting rods to rotate outwards at the same time, and therefore the two connecting blocks drive the two pressing plates to move outwards at the same time, and the wall tiles are leveled; according to the wall tile seam balancing device, wall tile seams are tidy and smooth, the situation that uneven tile seams affect the wall effect is avoided, meanwhile, the threaded rod rotates to drive the pressing plate to move and apply pressure, pressure balancing can be evenly conducted on the seam positions, wall tile springback is avoided, and the labor intensity of workers is relieved.

The utility model relates to the technical field of automobile engineering, in particular to a clamping jaw control parking structure which at least comprises a buckle valve sleeve part assembly and an electromagnetic part assembly, and the buckle valve sleeve part assembly and the electromagnetic part assembly are fixedly connected with a bent closing opening of a valve shell through the characteristics of a flange plate protruding out of the end of a valve sleeve. The electromagnetic part assembly comprises a valve shell, a gasket, a PIN protection cover, a dustproof cover, two PINs, a solenoid, a rear yoke sleeve and a magnetic core. The gasket is of an injection molding structure and is arranged between the valve shell and the valve sleeve. The clamping spring is mechanically buckled with the outer circle of the large valve element through a sectional structure, and the locking state can still be kept when the electromagnetic valve fails. Even if the electromagnetic force or the spring force disappears, the arc of the clamping spring can still tightly buckle the outer circle of the large valve element, the large valve element push rod is prevented from rebounding, the parking failure risk is completely eradicated from the mechanical structure, the gearbox safety is protected, and double safety guarantees are formed.

The utility model discloses a three-phase integrated current sensor, which belongs to the technical field of current sensors and comprises a bottom plate, a shell is arranged above the bottom plate, bottom blocks are arranged at two ends of the shell, screws are arranged above the bottom blocks, a top plate is arranged above the shell, and components convenient to disassemble and assemble are arranged at two ends of the top plate. A wiring end is arranged on one side of the bottom plate, a status lamp is arranged above the wiring end, and a protection assembly is arranged on one side of the wiring end. The detachable base, the square inserting rod, the fixing rod, the fixing sliding block and the fixing spring are arranged, so that the bottom plate and the top plate are conveniently detached, and the use convenience is improved; according to the utility model, the protection seat, the bidirectional trapezoidal screw rod, the rotating handle, the square sliding block, the protection plate and the dustproof sponge block are arranged, so that a wiring part can be protected after wiring, dust is prevented from entering, and the use practicability is improved.

The utility model provides a tool-free buckle type hoop device for underground pipeline monitoring, which relates to the technical field of engineering monitoring and comprises an upper hoop, a hoop fixing component is arranged on the lower side of the upper hoop, a spring sleeve is welded to the center of the inner side of a slot, a telescopic spring is mounted on the inner side of the spring sleeve, and the telescopic spring is connected with the hoop fixing component through a bolt. Sleeve holes are formed in four corners of the spring sleeve; according to the hoop fixing assembly, the rack below the upper connecting plate is clamped into the inserting groove of the lower connecting plate along with the upper hoop, the rack can extrude the telescopic toothed plate to be meshed with the telescopic toothed plate, in the process, the telescopic spring is pressed to generate elastic force to push the telescopic toothed plate to be meshed tightly, firm connection is ensured, looseness is prevented, and the service life of the telescopic toothed plate is prolonged. And the two sets of racks are synchronously meshed with the telescopic toothed plate, a double-locking mechanism is formed, the tensile strength is enhanced, it is guaranteed that no displacement exists at the connecting position, and the durability of the whole structure is improved.

A rubber-clad steel automatic tensioning device for an engine belongs to the technical field of chain tensioning devices and comprises an arc-shaped spring steel plate, nitrile rubber, a polytetrafluoroethylene coating and an anti-reversal ratchet mechanism, the nitrile rubber is coated outside the arc-shaped spring steel plate, and a protruding side of the arc-shaped spring steel plate forms a chain contact surface. A polytetrafluoroethylene coating is arranged on the contact face of the chain, one end of the arc-shaped spring steel plate is curled into an annular structure, a shaft sleeve is arranged in the annular structure, a fixing shaft is embedded in the shaft sleeve, and an anti-reversion ratchet mechanism is arranged between the fixing shaft and the inner wall of the shaft sleeve or between the outer wall of the shaft sleeve and the inner wall of the annular structure. And the fixed shaft is connected with the arc-shaped spring steel plate through a torsional spring. Through the design, all functions of a tensioning plate and a tensioner in the existing design are replaced. And on the other hand, through the arrangement, all functions of an existing tensioner and an existing tensioning plate are combined, meanwhile, the space structure is saved, the weight of the device is reduced, and the manufacturing cost of a tensioning system is reduced.

The utility model relates to a kind of battery protection plate pressure maintaining mechanism, including locating seat, holding component and pressure maintaining component;The locating seat is equipped with the locating part for placing battery protection plate, the holding component and pressure maintaining component are oppositely arranged on the both sides of the locating part, the holding component is configured to abut and fix the battery protection plate from one side, the locating seat is equipped with the first pressure maintaining inclined plane in the side towards the pressure maintaining component, the pressure maintaining component is configured to be close to the locating part from the other side, to clamp the part to be pressure maintained of the battery protection plate between the first pressure maintaining inclined plane and the pressure maintaining component. The utility model can realize the effective positioning and pressure maintaining of product, avoid rebound, improve the quality and reliability of product.

The application provides an ice outlet device control method, a refrigerator door body assembly and a computer readable storage medium. The ice outlet device control method comprises the following steps: after receiving an ice outlet opening signal, a motor is controlled to run in a first direction at a first pulse frequency to drive a cover plate assembly to rotate from a closed position for closing the ice outlet to an open position; when the motor runs a first preset number of revolutions, the motor is controlled to be turned off; wherein the motor is a self-locking motor, a rotation angle corresponding to the first preset number of revolutions is greater than an angle of the cover plate assembly rotating from the closed position to a limit open position, and the first pulse frequency is greater than a rated pulse frequency of the motor.

The utility model provides a novel winding drum turnover vehicle structure, relates to the technical field of lithium battery production equipment, and aims to solve the problems that an existing winding drum is easy to fall off in the turnover process, and potential safety hazards exist in production. The vehicle comprises an L-shaped vehicle body and a plurality of turnover shafts, one ends of the turnover shafts are fixedly connected to the front face of the vehicle body, shaft heads are arranged at the other ends of the turnover shafts, inverted-T-shaped clamping grooves are formed in the shaft heads, L-shaped bolts are inserted into the clamping grooves, and the turnover shafts are connected with the L-shaped vehicle body. And a spring is connected between the bottom of the bolt and the inner bottom surface of the clamping groove. The anti-drop winding drum has the beneficial effects that the anti-drop function can be realized, the risk of personal injury caused by dropping of the winding drum is reduced, and the production safety is improved.

The invention provides a bridge pile foundation protection device for bridge construction, which belongs to the technical field of bridge construction. It includes a protective outer ring, a placement groove is opened inside the protective outer ring, and a clamping inner ring is fixedly connected to the inner surface of the placement groove, and the outer surfaces of both sides of the protective outer ring are fixedly connected with fixing bolts, and the top inner wall of the placement groove is fixedly connected with a fixing block; after the limit rod is immersed in the ground, the push rod is in an initial state at this time, and the second hydraulic rod drives the push rod to start to descend, and the push rod pushes the bottom linkage ring to fall, and the linkage ring pushes the clamping frame to slide down along the outer wall of the placement rod when touching the clamping frame. At this time, the rotating shaft outside the clamping frame is subjected to pressure and starts to rotate, and at the same time, the bottom end of the limit strip starts to move outward, so that the limit strip is in an open state as a whole. After the linkage ring presses the clamping frame to the bottom, the limit strip extends from the groove into the soil around the limit rod, and cooperates with the limit rod to fix the position of the clamping inner ring at the top.