16results about How to "Convenient self-locking" patented technology

The invention discloses an electric anastomat with a novel jaw bending mechanism, the bending mechanism comprises a bending driving shaft, the bending driving shaft comprises a turntable and a shaft body which are coaxially arranged, the end face, close to the shaft body, of the turntable is provided with a limiting block, and an upper rotating hand wheel is provided with a containing groove matched with the turntable, a first shaft hole for the shaft body to penetrate through and a limiting groove matched with the limiting block; a plurality of gear convex ribs are arranged at the upper end of the gear chuck, and a second shaft hole for the shaft body to penetrate through is formed in the gear chuck; one end of the limiting spring abuts against the upper rotating hand wheel, and the other end of the limiting spring abuts against the gear chuck; the rotating handle is fixedly connected with the shaft body, and a plurality of gear clamping grooves matched with the gear convex ribs are formed in the rotating handle; and the driving sliding block is arranged on the sleeve module and can move in the axial direction relative to the sleeve module, a driving protrusion is arranged on the driving sliding block, and a V-shaped groove matched with the driving protrusion is formed in the end, away from the shaft body, of the rotating disc. According to the electric anastomat, the bending mechanism is simple in structure, good in stability and convenient to operate.

This application discloses an actuator, a cover assembly, and a vehicle. The drive mechanism includes a motor and a torque application assembly. The motor includes a motor shaft. The torque application assembly is configured to apply a first torque to the motor shaft when it rotates in a first rotational direction, and not to apply a torque to the motor shaft when it rotates in a second rotational direction; or, it is configured to apply a first torque to the motor shaft when it rotates in the first rotational direction, and apply a second torque to the motor shaft when it rotates in the second rotational direction. The first rotational direction is opposite to the second rotational direction. The first torque is greater than the second torque. Thus, when the motor is not energized, the motor shaft, which is conducive to rotation in the first rotational direction, is self-locked under the action of the first torque, while the motor shaft, which is conducive to rotation in the second rotational direction, is not resisted or continues to rotate under the action of a smaller second torque.

The utility model belongs to the technical field of cleaning, and particularly provides a cleaning device and cleaning equipment capable of guiding and limiting, the cleaning device comprises a frame body assembly, a cleaning assembly and a guiding and limiting assembly, the frame body assembly comprises a first frame body and a second frame body which are connected side by side; the cleaning assembly comprises a first roller body and a second roller body which are rotationally connected to the first frame body and the second frame body correspondingly, and the first roller body and the second roller body are annularly sleeved with cleaning cloth. The distance between the first frame body and the second frame body can be adjusted, so that the frame body assembly has a loosening adjusting state enabling the cleaning cloth to be loosened and a tensioning adjusting state enabling the cleaning cloth to be tensioned. The guiding and limiting assembly comprises a guiding piece connected with the first frame body and a limiting piece connected with the second frame body. The limiting piece is provided with sliding groove sections which are sequentially connected end to end, and the guiding piece can be matched with the sliding groove sections, so that when the guiding piece moves in the sliding groove sections, the frame body assembly can be switched between the loosening adjusting state and the tensioning adjusting state.

The utility model relates to the technical field of switch cabinets, and discloses a cabinet door self-locking structure of a switch cabinet, which solves the problem that the cabinet door of the switch cabinet is inconvenient to self-lock, and comprises a switch cabinet main body, a switch cabinet door is hinged to one side of the switch cabinet main body, and the switch cabinet door is hinged to the other side of the switch cabinet main body. A primary self-locking assembly for primary self-locking is arranged in the switch cabinet body, an auxiliary self-locking assembly for auxiliary self-locking is arranged on one side of the primary self-locking assembly, the primary self-locking assembly comprises a main spring bolt, a sliding groove A is formed in the inner wall of the switch cabinet body, the main spring bolt is slidably connected into the sliding groove A, and a spring is fixedly connected to the inner wall of the sliding groove A; one end of the spring is fixedly connected with one side of the main spring bolt, and one side of the main spring bolt is fixedly connected with an outer magnetic block A. The lock groove assembly comprises a main insertion groove formed in one side of the switch cabinet door, an electromagnet is fixedly connected to the inner wall of the main insertion groove, a door opening groove is formed in one side of the switch cabinet door, and a button is fixedly connected to the inner wall of the door opening groove. The purpose of conveniently self-locking the cabinet door of the switch cabinet is achieved.

This utility model relates to the field of expansion joint technology, providing a force-transmitting expansion joint, including a sleeve, with an inner tube disposed on one side inside the sleeve. Self-locking fixing structures are fixed to the outer walls of both the sleeve and the inner tube. Each self-locking fixing structure includes adjusting blocks uniformly fixed to the outer wall of the inner tube, and positioning blocks uniformly fixed to the outer wall of the sleeve. By providing self-locking fixing structures, this utility model facilitates precise connection between the sleeve and the inner tube under the connection and guidance of the screw. The dual locking action of the first and second self-locking bolts increases the stability of the connection between the sleeve and the inner tube. The limiting action of the limiting bolts facilitates control of the expansion distance between the sleeve and the inner tube. This device achieves the functions of easy self-locking, easy fixing, and easy adjustment of the distance between the sleeve and the inner tube, improving the working efficiency and convenience of the force-transmitting expansion joint during use.

The utility model relates to the technical field of teaching, in particular to a speech teaching device with a rotation adjusting self-locking function. The speech teaching device with the rotary adjusting self-locking function comprises a base and a telescopic rod, lifting grooves are formed in the two sides of the upper portion of the telescopic rod, a lower cavity is formed in the side, close to the lower portions of the lifting grooves, of the upper portion of the telescopic rod, and an upper cavity is formed in the position, close to the upper portion of the lower cavity, of the upper portion of the telescopic rod. An outer cylinder is further connected between the upper cavity and the lower cavity of the telescopic rod, cylinder grooves are formed in the outer side of the circumference of the outer cylinder, a stretching hole is formed in the top of the telescopic rod, and self-locking assemblies are arranged in the upper cavity and the lower cavity of the telescopic rod. Through mutual cooperation of the self-locking assembly and the rocking bar, a teacher can conveniently adjust the inclination angle of the speech plate, and through elasticity of the spring assembly, the upper clamping ring and the lower clamping ring are driven to move in the same direction to lock the rotating disc.

The self-locking connector comprises a connector female seat structure and a connector male seat structure, the connector male seat structure is detachably connected with the connector female seat structure, and the connector male seat structure comprises a middle sleeve, a coil clamping ring, a nut, a first waterproof ring, a plurality of contact pins, a male rubber core, a self-locking lock ring and a spring. The coil clamping ring is arranged on the right side in the middle sleeve, the nut is connected to the right end of the middle sleeve in a threaded mode, the contact pins are inserted into the male rubber core, the right end of the male rubber core is connected to the left end of the middle sleeve in a threaded mode, the self-locking lock ring is rotationally installed on the left end of the male rubber core through the spring, and the first waterproof ring is arranged on the right end of the male rubber core in a sleeving mode and located in the middle sleeve. The inner wall of the self-locking lock ring is provided with a plurality of locking clamping blocks, and the self-locking lock ring is self-locked with the connector female seat structure through the plurality of locking clamping blocks. The utility model has the advantages that the skew phenomenon in the plug-in process can be prevented, the connection effect is good, the self-locking can be better, and the like.

The utility model discloses a dental image scanner convenient to adjust, which comprises a support frame, two ends of the support frame are fixedly connected with mounting blocks, the inner wall of the support frame is fixedly connected with a guide rod, the inner wall of the support frame is movably connected with a movable screw rod, the outer wall of the movable screw rod is movably connected with a movable block, and the movable block is fixedly connected with the guide rod. The device comprises a support frame, a mounting block, a guide rod, a movable screw rod, a movable block, a scanner, a fixed rack, a positioning block and a scanning head, the top of the movable block is movably connected with a support shaft, the outer wall of the support shaft is fixedly connected with a cylindrical gear, and the outer wall of the support shaft is movably connected with the scanner. The device is provided with the support frame, the mounting block, the guide rod, the movable screw rod, the movable block, the support shaft, the cylindrical gear, the scanner, the fixed rack, the positioning block and the scanning head; the angle of the scanner can be conveniently adjusted, so that the scanner can be conveniently used by a worker, self-locking after angle adjustment is facilitated, the condition of accidental rotation is prevented, and the problem of tedious operation caused by manual locking is solved at the same time.

The invention provides a motor lifting system based on a box beam static load test system, comprising: a counterweight steel ingot, a pressure sensor, an automatic screw jack, a gasket group, a reaction frame, a winding observation instrument, a lower support steel frame and a control system; the automatic screw jack comprises: a top plate, a sawtooth screw, a sleeve, a jack main frame, a copper nut, a worm shaft, a lifting handle, a ratchet mechanism, a copper worm wheel, a thrust ball bearing, a radial ball bearing, a chassis, a driving connecting rod and a servo electric cylinder; the control system is electrically connected to the automatic screw jack, the pressure sensor and the winding observation instrument respectively, and the control system is used to control a group of automatic screw jacks to act synchronously; the invention has the advantages that: the reaction frame is supported by the automatic screw jack instead of the hydraulic jack, so that the requirements for recording the static load test force of the dedicated railway ballastless track simply supported box beam can be met, and the invention has the advantages of low cost, simple use, stable and reliable performance, etc.

The utility model discloses a self -locking structure, including mutually inserting and constituting the self -locking structure of sub -module and female module, and the female module includes from top to bottom assembly's upper cover, activity disc, spring and base, the sub -module is disc structure, and the bottom surface fixedly arranged with the symmetry of a pair of arc -shaped insert column, the upper cover is disc structure, and the cross section radius is less than the radius of sub -module, the upper cover is provided with the symmetry of a pair of arc -shaped insert groove, the arc -shaped insert groove and arc -shaped insert column adapt, constitute and plug in structure, the upper cover bottom surface center fixedly set up the round insert column of empty core, the lower part both sides of round insert column are provided with the vertical section gap, and the lower part horizontal section shape is equilateral circle arc shape. This self -locking structure, self -locking is convenient, and spring passes through the connection activity disc and base, realizes activity disc right -hand rotation 45 degrees after, and hole position is completely open, and sub -module can be from female module and come out or insert. After loosening hand, realizes activity disc automatic reset under the action of elasticity, and locks the hole position.

The utility model discloses a propeller tilting mechanism, which is applied to the field of aircraft propellers, and is characterized in that a rotating motor I is arranged at the bottom of a propeller body, a fixing ring is fixedly sleeved on the surface of the rotating motor I, and when the propeller tilting mechanism is used, a rotating motor II is operated, so that the propeller tilting mechanism can be used for tilting the propeller. The output end of a second rotating motor can drive a worm to rotate synchronously, at the moment, a worm gear meshed with the worm rotates, the worm gear drives a second rod body and a second gear to rotate synchronously, meanwhile, a first gear meshed with the second gear drives a first rod body to rotate, and the first rod body drives a supporting plate and a fixing ring; the first rotating ground and the propeller body rotate in a tilting mode, in the meshing process of the first gear and the second gear, the rotating speed transmitted to the propeller body can be adjusted and controlled more conveniently, meanwhile, through meshing of the worm and the worm wheel, self-locking of the angle of the propeller body is achieved when the second rotating motor stops, and using is more convenient.

The invention discloses a guide rail combination device capable of being quickly mounted and dismounted, a method and a display device. The guide rail combination device comprises multiple stages of guide rails, a bracket and support lugs, guide rail positioning holes are formed in two ends of the support lugs; the support lugs are respectively fixed on the left and right sides of the bracket; positioning nails are arranged at two ends of the innermost guide rail of the multi-stage guide rail, and are vertical to the mounting plane of the multi-stage guide rail to protrude; and the bracket is mounted on the positioning nails through the guide rail positioning holes in the support lugs, and is pulled along with the stretching of the multi-stage guide rails. The guide rail positioning holes comprise the positioning hole I and the positioning hole II, during installation, the bracket is lifted to be kept in an inclined state, the positioning nails on the inner side of the multi-stage guide rail enter the positioning hole I and slide in place along the outline of the positioning hole I, meanwhile, the bracket is laid flat, and the positioning nails on the outer side of the multi-stage guide rail are limited in the positioning hole II; the multi-stage guide rail is pushed inwards in place after being unlocked. The multi-stage guide rail can be quickly mounted and dismounted.

The invention discloses a part clamping and self-locking device of a main shaft of a detection instrument, which comprises a main shaft support frame, a plurality of hyperbolic clamping jaws and a spiral chuck, and is characterized in that the main shaft support frame is provided with a central hole for placing a part to be detected and is uniformly provided with a plurality of hyperbolic clamping jaw chutes in the circumferential direction; the extending axes of the hyperbolic clamping jaw sliding grooves are converged to the position of the center hole. The multiple hyperbolic clamping jaws are arranged in the hyperbolic clamping jaw sliding grooves in a sliding mode. The volute chuck is installed on the main shaft supporting frame and drives all the hyperbolic clamping jaws to synchronously move to the position of the center hole in the same direction, and the hyperbolic clamping jaws jointly clamp a part to be detected. The method has the beneficial effects that 1, the operation is simple and quick; 2, the detection efficiency is high; and 3, popularization in factories is facilitated.

The present invention discloses a dynamic flat-plate gastrointestinal machine photographic bed device and a method of using the same. The device includes a photographic bed and a lifting and rotating device connected to the photographic bed. The lifting and rotating device includes a base, a stand mechanism arranged on the base, a lifting mechanism arranged on the stand mechanism, and a rotating mechanism arranged on the lifting mechanism. The lifting mechanism drives the photographic bed to lift and lower, and the rotating mechanism drives the photographic bed to rotate. A rack is arranged on the stand mechanism, and the lifting mechanism is meshed with the rack. The method includes adjusting the lifting and lowering of the photographic bed by the lifting mechanism so that the height direction of the photographic bed meets the use requirements; then adjusting the rotation of the photographic bed by the rotating mechanism until the photographic bed is rotated to meet the use requirements. The present invention is reasonably designed. By setting a lifting mechanism and a bed rotating mechanism, the adjustment requirements of the photographic bed from 90° to 90° are achieved, thereby improving the adaptability range.

The utility model relates to rubber fender suspension technical field, and disclose a kind of for connecting rubber fender's hanger, including backplate, the top of backplate left side is fixedly connected with adjusting box, and the top and bottom of adjusting box inner cavity are rotatably connected with screw rod between through bearing, the outer surface of screw rod is connected with rectangular plate with screw thread, the left side of rectangular plate is fixedly connected with driving plate, the left side of backplate and located the outside of adjusting box are slidably connected with concave suspension frame, the utility model is connected with rectangular plate, driving plate, concave suspension frame, mounting hole and rocking handle by setting backplate, adjusting box, screw rod, can be suspended installation to rubber fender, simultaneously, it is convenient to carry out vertical adjustment to its installation position, by setting limiting component, rocking handle can be conveniently self-locked, avoid self-rotation movement, influence installation height, by setting above structure, can have installation adjustment function, to satisfy the use demand of customer, avoid that there is limitation in installation use.

The utility model discloses a ribbon convenient to reuse and combine, and relates to the technical field of ribbons, the ribbon comprises a ribbon main body composed of a lock head, a ribbon, a helical tooth groove, an inserting groove and a lock catch groove, a locking assembly is distributed in the lock catch groove, and the locking assembly is used for locking the ribbon penetrating through the inserting groove; the outer side of the binding strip is sleeved with a sleeve buckle assembly, the sleeve buckle assembly is used for allowing the end, penetrating through the lock head, of the binding strip to be stored, the sleeve buckle assembly moving to be close to the lock head is used for making contact with and extruding the locking assembly, and the locking assembly deforms to relieve locking of the binding strip. By arranging the locking assembly and the sleeve buckle assembly, convenient self-locking of the binding strip and the lock head is achieved, meanwhile, lossless unlocking of the binding strip can be achieved, the whole structure is kept complete after the binding strip is detached, secondary use can be achieved, and the use convenience of the binding strip is effectively improved.