31results about How to "Avoid locking failure" patented technology

This invention relates to a vehicle control method, a controller, and a vehicle. The control method includes: upon receiving a locking command, first controlling the wheel-end decouplers of the vehicle's differential to perform a coupling operation, and then controlling the differential lock of the differential to perform a locking operation. According to the vehicle control method of this invention, when the differential lock is locked, the wheel-end decouplers have already been coupled in advance. This avoids the locking failure problem caused by performing the locking operation in a wheel-end uncoupled state, as seen in related technologies, and ensures the normal operation of the differential lock.

The invention discloses a building fabricated wallboard and a production method thereof.The fabricated wallboard comprises a wallboard body formed by concrete pouring, and connecting plates are arranged at the two ends of the wallboard body correspondingly; the connecting plate at one end of the wallboard body is consistent with the connecting plate at the other end after rotating by 180 degrees, so that the connecting plates on the adjacent wallboard bodies are butted with each other when the adjacent wallboard bodies are connected, and are buckled into a flat plate with the same thickness as the wallboard bodies; a locking plate is arranged in the connecting plate, a threaded hole is formed in the locking plate, a first penetrating hole coaxial with the threaded hole is formed in the connecting plate, and a second penetrating hole is formed in the connecting plate. By arranging the connecting plates, when the wallboard bodies are spliced, the wallboard bodies can be spliced and connected together through the connecting plates, and connecting bolts penetrate through the second penetrating holes and the first penetrating holes to be in threaded fit with the locking plates, so that the connecting plates on the adjacent wallboard bodies are mutually locked, and the adjacent wallboard bodies are mutually locked; the connection strength is improved.

The invention relates to the field of nut locking machines, in particular to an automatic nut locking machine for a charging gun, and solves the problems of self-adaption to nuts of different sizes and automatic clamping and locking at the same time. The automatic nut locking machine comprises a base, a driving air cylinder and a rotating disc, a fixing frame is fixedly mounted at the top of the base, and a control box is fixedly mounted on the outer side wall of the fixing frame; a locking component is fixedly installed on the inner top wall of the fixing frame, the locking component is fixedly connected with the output end of the driving air cylinder, and the driving air cylinder is fixedly installed on the top of the fixing frame. Through the arrangement of the locking part and the rotating disc, the charging gun nut can be automatically locked, the locking part can automatically clamp the nut, meanwhile, the device is suitable for arrangement of various nuts of different sizes, the flexibility of the device is improved, and the stability of the charging gun is guaranteed; and the phenomenon of locking failure or locking instability caused by shaking when the nut is locked is avoided.

This utility model relates to the field of esophageal temperature measurement technology and discloses an esophageal temperature measurement indwelling tube connector, including an indwelling tube. One end of the indwelling tube is provided with a tube head, and a connector body is provided on one side of the tube head. A positioning ring is integrally formed on one side of the tube head. Two slots are formed on the outer circumference of the positioning ring. A positioning groove is formed on one side of the connector body to cooperate with the positioning ring. An annular groove is formed on the outer circumference of the connector body, and the annular groove and the positioning groove have two communication points. A rotating ring is rotatably connected in the annular groove. Two locking blocks are integrally formed on the inner circumference of the rotating ring to cooperate with the slots. This utility model can effectively prevent the connector from loosening or rotating due to changes in patient position or external force during use, ensuring that the indwelling tube and the connector body always maintain a stable connection, reducing the risk of temperature measurement interruption due to connection failure.

This utility model discloses a backrest lock, including a base plate. A locking hook and a locking plate are movably disposed on the base plate. The end of the locking plate has a pull head for connecting and cooperating with an external car pull rod, so that when the pull rod is pulled, the locking plate swings to release the restriction on the swing of the locking hook. The inner wall of the locking hook has a positioning strip for synchronously moving along the swing trajectory of the locking hook when it swings. The inner wall of the base plate has a positioning structure that works in conjunction with the positioning strip to guide the swing trajectory of the locking hook and limit the direction of the hook's swing, and an auxiliary structure that works in conjunction with the positioning structure to limit the wobbling or loosening of the locking hook when it is subjected to vibration and to improve the smoothness of the hook's swing. This utility model solves the problems of unstable hook swing trajectory and insufficient positioning accuracy in traditional backrest locks, easy loosening or wobbling of the locking hook under vibration, and insufficient smoothness of the hook's swing leading to operational jamming.

The utility model discloses a control box device for fresh air handling unit belongs to fresh air system control equipment technical field. The device includes the box body of installing in the one -way air duct of fresh air handling unit, and the opening direction of box body is perpendicular with the wind direction and has the outer open box door of hinged, and the door opening direction of box is the adverse wind direction, and the door closing assembly contains the vertical pressure -bearing plate, and one end is fixed to the outside of box door, and the other end is inclined to the direction of away from the box body and forms the pressure -bearing surface. The component of force that the airflow acts on the inclined pressure -bearing surface generates is converted into the door closing moment, realizes the automatic locking of box door. The problem that the control box in the air duct leads to the sealing failure of air flow impact, the operation difficult problem is solved, and the box door is locked by wind energy, and the sealing reliability is improved significantly, and the stability of equipment under the vibration, high pressure difference working condition is enhanced.

The utility model discloses a kind of general connecting structure of modularization splicing type ornament, including male connector, the right side of male connector is provided with female connector, first installation slot is fixedly connected with supporting block, sliding slot is opened on the right side outer wall of supporting block, sliding rod is fixedly connected in sliding slot, sliding block is movably sleeved on the outer wall of both sides of sliding rod, the outer wall of sliding block is fixedly connected with limit plate, the outer wall of limit plate is fixedly connected with triangular block, triangular groove is opened on the inner wall of both sides of second installation slot.The general connecting structure of modularization splicing type ornament, male connector supporting block, sliding block is pushed out by second spring thrust, drive limit plate to make triangular block embed female connector triangular slot, anti-vibration impact prevents axial loosening, lays the connecting foundation, male connector deflection plate is reset by torsion spring, strip block is clamped into female connector strip slot, transverse lock is complementary with longitudinal lock, and connection stability is greatly improved.

The utility model relates to water turbine technical field discloses detachable tubular water turbine guide vane locking device, water turbine guide vane and tubular water turbine with manual and hydraulic double locking function, the locking device includes the manual locking plate set up on the locking hole end face and installs the locking support on the guide vane outer ring, is provided with the locking cylinder on the locking support, the locking cylinder has the locking pin reciprocating in the locking cylinder in, the end of locking cylinder has the opening for the locking pin to pass through, the locking pin is cooperated with the locking hole, realizes water turbine guide vane hydraulic lock; The manual locking plate is equipped with through -hole, and the through -hole has locking bolt, the end surface of locking pin is provided with the locking screw hole of adapting with locking bolt, and locking pin is cooperated with locking bolt, realizes water turbine guide vane manual lock. The utility model will lock the support and combine on the guide vane outer ring, realizes the separation of locking support and runner chamber, and the locking device is detachable, not only is convenient for overhauling and simplifies runner chamber structure.

The utility model discloses a leakage-preventing bearing device and a fan, and belongs to the technical field of bearing sealing. A rotating shaft; the bearing is mounted in the bearing box, and the rotating shaft is sleeved with the bearing; the bearing side cover is used for sealing the bearing in the bearing box, the inner edge of the bearing side cover sleeves the rotating shaft and is sealed with the rotating shaft, and the outer edge of the bearing side cover is fastened on the bearing box; wherein the inner edge surface of the bearing side cover is provided with a sealing groove which is annularly arranged along the circumferential direction, the outer circumference of the rotating shaft is annularly provided with a bulge, and the bulge is matched with the sealing groove so as to form a sealing channel which is bent along the extending direction of the rotating shaft; the fan comprises the bearing device capable of preventing leakage. The problem of oil leakage at the bearing sealing position can be solved, the effective sealing effect is ensured, the bearing locking fault in the bearing box is avoided, and it is ensured that normal production is not affected.

The utility model relates to a locking mechanism and a storage device. The storage device comprises the locking mechanism. In the locking mechanism, an eccentric wheel is driven by a motor to rotate, and then the eccentric wheel drives a sliding lock cylinder to slide on a shell, so that the sliding lock cylinder is driven to slide to a locking position to achieve the purpose of locking, or the sliding lock cylinder is driven to slide to an unlocking position to achieve the purpose of unlocking. Therefore, the trouble of manually operating the sliding lock cylinder is avoided, and the use convenience of the product is improved. In addition, through the arrangement of the elastic piece, the fit clearance between the movable fit position on the sliding lock cylinder and the eccentric wheel is eliminated, namely, the fit clearance of the sliding lock cylinder in the sliding direction is eliminated, locking failure or unlocking failure of the sliding lock cylinder is prevented, and the durability of the product is improved.

The utility model relates to the technical field of assembly type building construction, concretely is a kind of assembly type building wall body anti-seismic connecting node structure, including pedestal and the L-shaped structure on the pedestal, and the L-shaped structure is connected with the damper between the pedestal;The bottom end of the pedestal is provided with embedded part, the L-shaped structure includes horizontal L-shaped plate and vertical L-shaped plate that is vertically arranged on the horizontal L-shaped plate;The vertical L-shaped plate includes two fixed plates connected in right angle, the outside of two the fixed plate is respectively fixed with assembly box, each the fixed plate is all provided with the threaded hole that is connected with the inside of assembly box, threaded column is arranged on the threaded hole, and the threaded column is located on the end in the inside of assembly box and is equipped with handle and gear, the inside of assembly box is also provided with lifting plate, locking mechanism, damping spring and guide mechanism. Through the energy dissipation effect of damper, wall body can consume energy by displacement and deformation in earthquake, rather than directly transmitting rigid impact.

The invention relates to the technical field of fluid medium filling, in particular to a movable storage tank sealing filling connector which comprises a sleeve and a sealing cover, a vertical pipe is fixedly assembled at the bottom of the sealing cover through a flange plate, and a liquid phase connector fixedly communicated with the vertical pipe is fixedly assembled on the upper surface of the sealing cover. And a gas phase interface communicated with the bottom of the sealing cover is fixedly assembled on the upper surface of the sealing cover. The movable storage tank sealing and filling connector is good in sealing performance, locking force provided by the pressing rod locking mechanism overcomes influence factors causing sealing failure, the locking force of the pressing rod locking mechanism only acts between a sealing device and a tank car opening, influences on external factors such as a crane pipe and a tank car are small, and the sealing performance is good. A reliable seal can be produced even under adverse conditions; the automation degree is high, a pneumatic mode is selected, automatic control over the locking action and the loosening action is achieved, and full-automatic control over a full-automatic crane pipe and a sealing device can be achieved.

The present invention relates to the technical field of low-voltage switch cabinets, and discloses an electric door of a low-voltage switch cabinet, comprising a cabinet body, a cabinet door hingedly arranged on the cabinet body and capable of opening or closing the cabinet body, an automatic door opening and closing structure arranged between the cabinet body and the cabinet door, and a locking structure arranged between the cabinet body and the cabinet door, wherein the locking structure comprises a mounting block arranged on the cabinet body, a locking groove recessed on the top surface of the mounting block, a fixing block arranged on the cabinet door above the mounting block, a telescopic groove recessed on the bottom surface of the fixing block, and a locking block arranged for lifting and lowering in the telescopic groove, which is interlaced and matched with the locking groove when descending or is disengaged from the locking groove when ascending, and the lifting and lowering of the locking block is controlled by the opening or closing of the automatic door opening and closing structure. The electric door of the low-voltage switch cabinet ensures the automatic opening and closing of the cabinet door while improving the anti-theft performance of the low-voltage cabinet.

The invention belongs to the technical field of foldable bicycles, and particularly relates to a folding structure and a foldable bicycle. The device comprises an upper connecting piece; the lower connecting piece and the upper connecting piece are oppositely arranged in the vertical direction, the upper connecting piece and the lower connecting piece are in butt joint and matched to form a containing space, and the upper connecting piece and the lower connecting piece are rotatably connected through a hinge shaft. The locking structure comprises a locking block which is movably arranged in the accommodating space; the trigger assembly is rotatably mounted on the hinge shaft and is in driving connection with the locking block; when the triggering assembly is operated to rotate around the hinge shaft, the locking block can be driven to move in the containing space so that the locking block can be switched between the locking position and the unlocking position. At the locking position, the upper connecting piece and the lower connecting piece are relatively locked by the locking block; and at the unlocking position, the upper connecting piece and the lower connecting piece can rotate relatively. The folding structure is simple in structure, the rotating action of the triggering assembly can be accurately converted into the directional movement of the locking block through a transmission mechanism, and operation is easy and convenient.

The present application relates to the technical fields of power cable channel monitoring equipment, in particular to a cable honeycomb pipe online monitoring device, which comprises a flexible strain sensor, a wireless acquisition unit and an integrated body, the two ends of the cable honeycomb pipe body are provided with first and second connecting seats with tapered guide tables and guide grooves, the mating surface is provided with an annular air bag, the flexible strain sensor is connected between the pipe bodies, the locking chuck is matched with the compression sliding block, the reset spring, the compensation ring and the elastic damping ring in the second connecting seat to realize quick locking and anti-loosening; the second connecting seat is provided with a linkage groove, an elastic linkage plate, a linkage block and a pressing block, and the bending deformation is amplified and transmitted to the flexible strain sensor; the present application realizes the three-in-one monitoring of pipe body deformation, cable failure and pipe hole occupation, and has the advantages of deformation amplification, dynamic sealing and anti-loosening.

This utility model relates to the field of wall sleeve technology, specifically disclosing a leak-proof wall sleeve sealing structure. It includes an installation wall with a pre-embedded sleeve installed through its surface. A waterproof ring is fixedly connected to the outer surface of the pre-embedded sleeve. An inner pipe is installed in the cavity of the pre-embedded sleeve. Locking baffles are installed at both ends of the pre-embedded sleeve. A positioning groove is formed on the outer surface of the pre-embedded sleeve. A sliding groove is formed on the surface of the locking baffle, and a supporting slider is installed on the inner wall of the sliding groove of the locking baffle. This leak-proof wall sleeve sealing structure, through the cooperation of the L-shaped positioning groove, the sliding supporting slider, and the rotatable limiting disc, eliminates the need for the traditional "iron handle" that is easily blocked by pipelines. Workers can quickly complete the installation and removal of the locking baffle by simultaneously adjusting the supporting slider by rotating the limiting disc, significantly reducing operational obstacles in dense pipeline scenarios and improving maintenance efficiency.

The utility model belongs to telescopic joint locking technical field discloses a kind of telescopic joint locking mechanism for petroleum steel pipe stability, including outer locking ring, connecting piece, locking inner tube and baffle, the accommodating space is formed in the inside of outer locking ring, the connecting piece and locking inner tube are set in the inside of outer locking ring, the locking inner tube is movably inserted in the inside of connecting piece, the outer locking ring is fixedly connected with the locking inner tube by fixed pin, the baffle is set in the inner end surface of outer locking ring, the baffle is fixedly connected with the connecting piece by screw.The utility model in the quick insertion of outer locking ring and locking inner tube by fixed pin is set, in combination with the screw fixing mode of baffle and connecting piece, the modular assembly of telescopic joint locking mechanism is realized, locking and unlocking can be completed by only inserting or pulling out fixed pin, without disassembling multiple fasteners one by one, avoid the delay of operation caused by operation time-consuming too long.

The present application relates to the technical field of fuse, especially to a copper-aluminum composite fuse contact blade assembly, comprising a rivet jig mechanism for providing precise assembly space and applying controllable axial pressure, the interior of the rivet jig mechanism is provided with a separable contact blade mechanism, the contact blade mechanism comprises a positioning disc for providing axial limiting and circumferential anti-rotation, and the positioning disc is provided with a riveting block capable of forming permanent mechanical interlocking under pressure. The present application adopts a riveting assembly method to replace the traditional welding process, the expansion groove on the riveting end occurs radial plastic expansion under the action of axial pressure, which can make the riveting block and the positioning disc form permanent mechanical interlocking, completely avoiding the generation of welding defects such as virtual welding, blowhole and crack, compared with the traditional welding method, the present application does not need welding equipment and welding process control, the batch production qualified rate is high, and the product consistency and reliability are significantly improved.

This utility model discloses a locking component and connector for locking mating connectors, including a base, a connecting arm, an actuating protrusion, and a latching arm. The base has a boss on its top side, a guide rib on its bottom side, latching points on both sides, and a push button on its rear side. The connecting arm extends forward from the left and right sides of the base and connects through the latching arm. The bottom side of the cantilever on the connector housing has a latching groove and a clearance notch, and the bottom side also has a clearance groove communicating with the clearance notch. The actuating protrusion is formed on the top side of the connecting arm and can move between the clearance notch and the clearance groove. The base can switch between a pre-installed state and a locked state. In pre-installation, the latching points engage with the pre-installed latching holes on the connector housing, and the latching arm locks the cantilever. During insertion, the mating connector actuates the actuating protrusion to release the pre-installed state. This locking component provides stable pre-installation, convenient connector assembly, and reliable connection.

The invention provides a locking and wire cutting device and a plugging device system, and the locking and wire cutting device comprises a housing which is provided with a first accommodation space, and the side wall of the housing is provided with a first through hole which is communicated with the first accommodation space; the locking piece is located in the first containing space, the far end of the locking piece is provided with a locking part, and the near end of the wire locking piece is located on the locking part; the cutting piece is located in the first containing space; the driving part and the driven part are both located in the first containing space, and the driving part is configured to drive the driven part to move towards the near end under the action of external force, so that the driven part drives the locking part to lock the wire locking part; under the action of external force, the driven piece and the cutting piece are driven to move in the far-end direction, so that the driven piece and the locking part are reset, and the cutting piece cuts the medical line at the first through hole; the locking piece, the cutting piece, the driving piece and the driven piece are all located in the first containing space when moving. The operation difficulty of suture locking and suture cutting in the operation process is reduced.

The invention belongs to the technical field of mechanical connection, and relates to a quick-release self-locking anti-loosening locker which comprises an inner core, a tight sleeve, a locking outer ring and a loosening button. The locking shaft is sleeved with the inner core, the inner core is a C-shaped pipe of a horn-shaped structure with the small upper end and the large lower end, and the upper end of the inner core extends outwards in the radial direction to form an upper limiting ring; the inner core is sleeved with the tight sleeve, the tight sleeve can move in the axial direction of the inner core, so that the state of the inner core on the locking shaft is switched between a free moving state and a locking state, and a spiral groove is formed in the tight sleeve; the locking outer ring sleeves the tight sleeve and can rotate relative to the tight sleeve, and a through hole is formed in the locking outer ring in the radial direction of the locking outer ring; the loosening button comprises an inserting rod, the inserting rod penetrates through the through hole, and the length of the part, exposed out of the inner end of the through hole, of the inserting rod is adjustable; when the exposed length of the insertion rod from the inner end of the through hole reaches the maximum, the insertion rod is inserted into the spiral groove, and when the exposed length reaches the minimum, the insertion rod leaves the spiral groove. Rapid self-locking and rapid loosening can be achieved, and meanwhile the anti-vibration loosening performance is achieved.

The utility model discloses a handle can be quickly disassembled, including base, locking block, operating part, driving part and retaining piece, the axial through groove and radial through groove of mutual intercommunication are constructed on the base, locking block movably sets up in radial through groove and is provided with the locking through groove of mutual intercommunication with axial through groove on it, and one side of locking through groove is provided with the thread section of adaptation with screw rod, operating part sets up on the base and is in abutment with locking block, and operating part has locking state and unlocking state, driving part sets up between locking block and base, is used for providing the driving force that thread section separates with screw rod, retaining piece sets up between operating part and base, is used for providing the driving force that operating part keeps in locking state, through for operating part providing the driving force that keeps in locking state continuously, ensure that thread section and screw rod stable engagement, avoid the locking failure of accidental touch result, also avoid the situation that lock in not unstable and lead to shaking, satisfy the use demand.

The invention relates to the technical field of overhead operation platforms, in particular to a bridge guardrail overhead operation platform based on portal frame hoisting and a using method thereof. The bridge guardrail overhead operation platform comprises a platform support and a supporting plate fixed to the top of the platform support; the winch is installed on the supporting plate, a steel cable penetrating through the supporting plate is wound on the winch, a protection frame is fixedly hung on the steel cable, and a bottom plate is fixed to the bottom of the protection frame; the synchronous unfolding mechanism is arranged on the supporting plate and is connected with the bottom plate; the speed-up centrifugal mechanism is arranged on the synchronous unfolding mechanism, and the synchronous unfolding mechanism is further provided with a follow-up adjusting assembly connected with the speed-up centrifugal mechanism; and the stall locking mechanism is arranged on the speed-increasing centrifugal mechanism and connected with the follow-up adjusting assembly, and the position of the protection frame can be locked through the stall locking mechanism when traction force on the protection frame disappears due to breakage of a steel cable or damage of a winch.

The application discloses a combined forming hydraulic machine with punching, forging and extruding functions and belongs to the technical field of metal processing. The combined forming hydraulic machine comprises a base and a machine body, the machine body is fixedly connected to the base, a top plate is further connected to the base through a sliding rod, and the combined forming hydraulic machine further comprises two groups of symmetrically arranged mounting plates, one group of the mounting plates is fixedly connected to the top plate, the other group of the mounting plates is fixedly connected to a driving end of the machine body, a forming part is detachably connected to the mounting plates, fastening screws are threadedly connected to the mounting plates, and the fastening screws are used for locking the forming part. The combined forming hydraulic machine is fully compatible with three core plastic forming processes of punching, forging and extruding, a plurality of single-process special hydraulic machines are not needed to be arranged, the equipment procurement cost and the site occupation area of an enterprise are greatly reduced, the comprehensive utilization rate of the equipment is effectively improved, and the combined forming hydraulic machine is suitable for the flexible production demand of small and medium-sized enterprises for multiple varieties and small batches.

The technical scheme belongs to the technical field of locksets, and particularly relates to a locking device and a safety lock, the locking device comprises a locking seat, a locking part on the locking mechanism is inserted into the locking groove to form a locking area; the limiting mechanism is mounted on the locking seat; the locking mechanism comprises a pin shaft assembly which is arranged in the locking seat in a sliding mode, and a first limiting part is arranged at the side end of the pin shaft assembly. The locking piece is arranged in the locking seat in a sliding mode and movably abuts against the limiting mechanism, and a second limiting part is arranged on the locking piece; the second limiting part movably abuts against the first limiting part to limit unlocking of the pin shaft assembly, and an external lock head is locked in a locking groove of the locking base through the pin shaft assembly of the locking mechanism. In order to prevent the pin shaft assembly from being opened, a locking piece is designed for protection; meanwhile, the limiting mechanism is additionally arranged, so that unlocking caused by movement of the locking piece is effectively prevented; and through the design of multiple locking structures, the safety of the locking device is improved, and the safety problem possibly caused by mistaken unlocking by children is effectively avoided.

The invention discloses a screw placement guiding device for spinal surgery, and belongs to the technical field of medical instruments, the screw placement guiding device for spinal surgery comprises a base and a transverse regulator, one end of the transverse regulator is rotatably connected to the top end of the base, and the screw placement guiding device for spinal surgery further comprises a screw placement guider arranged at the other end of the transverse regulator; the screw placement guider comprises a screw placement frame, a guider and a hand-operated positioner, the nail placing frame is arranged at the end part of the transverse regulator; the guider is rotatably connected in the screw placement frame, the infrared emitter, the kirschner wire and the screw placement tool which can switch positions mutually are arranged on the guider, the angle and the position of spinal screw placement are preliminarily determined by the infrared emitter, and the angle and the position of the kirschner wire are judged to be accurate by switching to the kirschner wire. According to the device, the screw placement angle can be accurately adjusted and fixed, the problem that the operation view of a doctor is shielded is solved, and the clinical operation requirement can be met.

The utility model relates to a cabin door self-locking mechanism which comprises a machine body, a front shell, a cabin door, a driving assembly, a cabin opening assembly and a self-locking assembly, the cabin opening assembly is in transmission connection with the driving assembly, and the lower edge of the cabin door is provided with a barrier strip; the cabin opening assembly comprises a rotating seat, a first driving end and a second driving end, and the first driving end and the second driving end are arranged on the two sides of the rotating seat respectively; the self-locking assembly comprises a first self-locking end, a second self-locking end and a reset tension spring, the middle of a whole formed by the first self-locking end and the second self-locking end is hinged to the inner side of the machine body, one end of the reset tension spring is connected with the second self-locking end, and the other end of the reset tension spring is connected with the machine body; the first driving end can drive the first self-locking end to rotate; the second driving end can drive the cabin door to open and close; and the second self-locking end can limit the rotation of the barrier strip in a reset state. A special cabin door opening structure is used, mechanical locking of the cabin door is unlocked while the cabin door is opened, and opening and closing actions and mechanical unlocking actions of the cabin door are simultaneously performed by using one driving motor.

This utility model discloses a crane hook anti-slip locking device, including a hook body, a mounting cover on the hook body, a sliding frame on the inner wall of the mounting cover, a limiting tooth on the inner wall of the mounting cover on one side of the sliding frame, a latch connected to the sliding frame and connected to the limiting tooth, a connecting plate on the sliding frame, an upper baffle hinged to the connecting plate, and a lower baffle hinged to the upper baffle. Upper and lower torsion springs with opposite rotation directions are located at the hinge point. A support plate is located on the upper baffle near the lower baffle, with the other side of the support plate located below the lower baffle. The beneficial effects of this utility model are that the mounting cover is connected to the hook body by a detachable connecting frame, and the elastic potential energy of the upper and lower torsion springs enables the baffle to automatically reset, ensuring reliable locking to prevent the suspended object from slipping when there is no external force; the support plate limits excessive rotation of the lower baffle, enhancing overall stability; the sliding frame, limiting tooth, and latch cooperate to adjust the position of the locking components, improving adaptability to different suspended objects.