154 results about "Screw thread" patented technology

An anchor element serves for knotless fixing of a tissue to a bone by means of at least one suture threaded through said anchor element. A body of that anchor element has an outer surface with projections. A transverse bore is arranged in a distal end section of said body for receiving a threading passing therethrough. A clamp element serves for clamping the suture threaded transversely through the bore. The clamping element has a portion arranged within the body and is movably within the body towards that transverse bore.

A locking assembly for a ballast housing simply and easily locks a lid to a body of the housing. The body has a first base and a first wall extending upwardly from the first base. The lid has a second base and a second wall extending downwardly from the second base. A tab extends outwardly from the first wall. A fastener is pivotally disposed in an opening in the tab, and has a head adapted to receive a rotating device. A third base extends outwardly from the second wall. A slot in the third base is adapted to receive the fastener. A nut is threadably disposed on the fastener and the fastener is rotatable through the nut to engage the fastener head with the tab and to engage the nut with the base to tightly secure the lid to the body.

The invention relates to lifting equipment. The lifting equipment mainly comprises a bottom plate base. A sliding groove is formed in the bottom plate base in the horizontal direction. A rack is installed in the sliding groove in a sliding mode. A connecting plate is connected to the left end of the rack. An air cylinder is connected to the left end of the connecting plate. A gear is engaged with the upper portion of the rack. A first bevel gear is coaxially connected to the front end of the gear. The first bevel gear is engaged with a second bevel gear. The second bevel gear is connected with a lower base body installed on the bottom plate base in a rotating mode. A ball screw is installed at the upper end of the lower base body. A vertically-arranged unthreaded rod is arranged on the right side of the ball screw. A carrying plate which is in threaded connection with the ball screw is connected with the unthreaded rod in a sliding mode. The lifting equipment has the characteristics that a processed part can be vertically lifted and transported through a high-automatic tooth meshing mode, and therefore the indirect beneficial effects of convenient processing is achieved.

A pedicle screw locking system includes a reduction tube and a locking driver. The reduction tube includes an inner shaft, a pair of grips, a reduction sleeve, and a rotatable tube. The inner shaft has a threaded end and reduction arms distally extending from the threaded end. Each grip of the pair of grips has a finger configured to engage the receiver of a pedicle screw. The reduction sleeve and the rotatable tube are disposed over and coaxially aligned with the inner shaft. The rotatable tube is coupled to the reduction sleeve. The rotatable tube moves the reduction sleeve relative to the reduction arms. The locking driver includes a threaded portion and a blunt tip. The threaded portion is configured to thread into threads in the receiver of the pedicle screw until the blunt tip locks the receiver of the pedicle screw.

The invention discloses an automobile processing part clamping device with the good fixing performance. The part clamping device comprises a mounting base. Fixed lug seats are welded to the two ends of the two sides of the mounting base. Fixing bolts are connected to the outer walls of the tops of the fixed lug seats through threads. Bearing blocks are connected to the outer walls of the two sidesof the top of the mounting base through bolts. A horizontal lead screw is rotatably connected to the inner walls of the two bearing blocks. A second sliding block is connected to the peripheral wallof the lead screw through threads. The outer wall of the top of the second sliding block is connected with a hydraulic cylinder through bolts. The outer wall of the top of the hydraulic cylinder is connected with a mounting block through bolts. The outer wall of one side of the mounting block is connected with a servo motor through bolts. According to the part clamping device, a stepping motor isstarted, two first sliding blocks are driven to move to the middle to clamp a part through a first thread and a second thread with the opposite thread directions on the lead screw; the first sliding blocks are provided with magnets so that the part can be clamped more stably.

There is provided a synthetic resin member, having a screw formation portion and synthetic resin body. The screw formation portion has: a cylindrical metal portion having a first end and a second end, a female screw part being formed on the cylindrical portion; a release prevention portion formed at the first end; a flange portion formed at the second end, the flange portion having a first surface and a second surface opposite to the first surface; and a rotation prevention portion formed on the first surface. The synthetic resin body has: a body portion perpendicularly extending to have a third end and a fourth end, the body portion having a screw engagement portion perpendicularly penetrating the body portion. The cylindrical metal portion is inserted into the screw engagement portion. The release prevention portion is caulked with the third end of the body portion. The rotation prevention portion is engaged with the synthetic resin body at or near the fourth end of the body portion.

The invention discloses a pipe fitting clamping device. The pipe fitting clamping device comprises a magnetic ring, a sensor, a tensioning motor, a main controller, a motor driver, a core shaft, an expansion block mounting seat, an expansion block mechanism, a tension spring, a rack, a lead screw, a first switch and a second switch; a body of the tensioning motor and the expansion block mounting seat are fixedly connected to the rack, and an output shaft of the tensioning motor is in transmission connection with the lead screw; the core shaft is slidably connected to the expansion block mounting seat, and the lead screw and the core shaft are in threaded connection; the expansion block mechanism comprises a plurality of radial sliding blocks and a plurality of expansion blocks, the radialsliding blocks are slidably connected into sliding grooves of the expansion block mounting seat, and the conical faces of the radial sliding blocks are matched with a cone part of the core shaft; themagnetic ring is fixedly connected to the output shaft of the tensioning motor; the sensor is fixedly connected to the body of the tensioning motor; the sensor, the motor driver, the first switch andthe second switch are all electrically connected with the main controller; and the tensioning motor is electrically connected with the motor driver. The pipe fitting clamping device can automaticallyclamp a steel pipe, and clamping force can be automatically controlled.

Cylinder rings having single-start nut and bolt threads matched to one another and axial stop surfaces, running perpendicularly to the cylinder axis, between the cylinder rings are distinguished by the fact that the stop surfaces (11, 12) assigned to the nut thread (3) and the bolt thread (4) extend in an axially rising manner over at most one thread turn and each have at the end a step surface (13, 14) between the axially offset stop planes of the stop surfaces (13, 14).

A steering column having a mounting bracket and a self-loosening capsule assembly configured for attachment to an adjacent vehicle component is provided. The mounting bracket includes an installation slot, a flange extending within the installation slot and a bracket keying mechanism positioned at a periphery of the installation slot. The self-loosening capsule assembly is received in the installation slot, and includes a capsule and capsule nut. The capsule includes a head and a body extending from the head, the body having a threaded outer surface, the head having a larger outer diameter than the body. The capsule nut includes a threaded inner surface for threaded coupling to the capsule and is movable so as to apply a first clamping force to the flange of the mounting bracket between the head and the capsule nut and a keying mechanism configured to interface with the bracket keying mechanism.

The present invention discloses a pre-tightening and transmission clearance-adjustable transmission mechanism of a base joint of each finger of a dexterous robot hand, which relates to a transmission mechanism of a base joint of each finger of a dexterous robot hand. The transmission mechanism resolves the problems that the structure of the base joint of each finger of the prior dexterous robot hand is complex, the processing cost is high, and pre-tightening and transmission clearance adjustment can hardly be realized. A first driving device and a second driving device are fixed on a first rack and a second rack; a first joint shaft passes through a radial central tapered hole in the middle of a second joint shaft; two driving tapered gears are firmly assembled on the first joint shaft; two driven tapered gears are firmly assembled on the second joint shaft; the driving tapered gears are engaged with the driven tapered gears; through two belt transmission mechanisms, the first joint shaft is connected with the two driving devices in a transmission way; the lower ends of the first and the second racks are firmly connected together by threaded connecting pieces, and the upper ends are nested on a transmission shaft; the first joint shaft is connected with the transmission shaft by two fixing rods. The transmission mechanism has the advantages of simple structure and low processing cost and can realize pre-tightening and transmission clearance adjustment.

The invention discloses multi-functional meat processing equipment which comprises a cabinet. A servo motor is arranged in the top center of the cabinet, a rotating shaft is connected onto the serve motor, grinding wheels are connected to the upper portion of the rotating shaft, stirring rods are arranged on the lower portion of the rotating shaft, feed hoppers are arranged at the top of the cabinet, sliding plates are arranged on the upper portion of the cabinet, a discharge hopper is arranged on the lower portion of the cabinet, a discharge pipe is connected to the bottom of the discharge hopper, threaded holes located on two sides of the discharge pipe are formed in the bottom of the cabinet, each threaded hole is provided with a screw therein, the bottom of each screw is fixedly connected with a connecting rod, a spring is fixedly connected onto the inner side of each connecting rod, the spring is abutted against a clamping piece, and a clamping block is fixedly connected to the position where the screw is connected with the connecting rod. The multi-functional meat processing equipment is simple in structure and capable of realizing meat mincing and sausage stuffing functions;a casing protection device is arranged, and breaking of the casing can be prevented; meanwhile, the minced meat can be mixed with some ingredients with even blending, and convenience in use is achieved.

A firearm training safety device includes a cartridge loaded into the firearm, a rod to fit in the barrel of the firearm, a releasable fastening element which fastens the first end of the rod to the cartridge, and a colored safety indicator at the second end of the rod. The cartridge can be loaded into the firearm, and the rod can be inserted into the barrel and fastened to the cartridge, so that the firearm is rendered inoperable and the safety indicator extends from the barrel. The fastening element can be a threaded tunnel and funnel contained within the cartridge, and a threaded stud at the end of the rod.

The invention discloses a multi-plate magnetorheological soft start device, which is characterized in that: a right shaft is in threaded connection with a right sealing disk; the outer ring of the right sealing disk is provided with a key groove which is matched with internal teeth of internal friction plates; a left shaft is in threaded connection with a left sealing disk; the left sealing disk is connected with a sealing ring through a screw; the inner ring of the sealing ring is provided with a key groove which is matched with external teeth of external friction plates; the internal friction plate and the external friction plates are alternately arranged; a magnet exciting coil is arranged between a left end plate and a right end plate; and the upper part of the right end plate is provided with a fluid injecting bolt, and the lower part of the right end plate is provided with a fluid discharging bolt. Magnetorheological fluid is taken as a working medium, the in-plate magnetic induction density is regulated by controlling the current of the magnet exciting coil, and the transmission torque is changed, so that the controlled soft start of heavy mechanical equipment is realized. The multi-plate magnetorheological soft start device has a hollow symmetrical structure, has high heat dissipation and high reliability and is convenient to operate.

The invention belongs to the field of single-side edge sealing, and particularly relates to edge sealing equipment for single-side edge sealing of a circular hole with an edge sealing strip. The edgesealing equipment comprises a support cylinder, a screw rod, a column, a leaf spring, a fixing mechanism, a glue spreading mechanism and a glue injecting mechanism, wherein the screw row driven manually to rotate is in screw-thread fit with a threaded hole in the center position of a top cover of the support cylinder; and the lower end of the screw rod is provided with the column with the same central axis, and a spiral groove used for spirally winding the edge sealing strip is formed in the cylindrical surface of the column. Compared with traditional edge sealing equipment, the edge sealing equipment can be used for sealing the inner wall edge of a circular hole B in a plate. According to the edge sealing equipment, glue is fed to the edge sealing strip in the spiral winding process of the edge sealing strip automatically; the edge sealing strip wound on the column is moved in the circumferential direction of the inner wall of the circular hole B in the plate, and pasted on the innerwall of the circular hole B in the plate automatically and circumferentially; the edge sealing efficiency on the inner wall of the circular hole B in the plate is higher, and the edge sealing equipment can be suitable for sealing the inner wall edge of the circular hole B with a larger diameter range in the plate; and the application range of the edge sealing equipment is wider.

The invention discloses an improved advertisement display screen device, which comprises a base which is defined by a push part and an electric connecting part and a display screen which is matched with and connected to the base, wherein a first transmission cavity is formed in the bottom of the lower right end of the push part; a first spiral rod is arranged in the first transmission cavity; the right side end of the first spiral rod is in transmitting connection to a first motor; a sliding locking part, which is in matched connection to the first spiral rod by virtue of a screw thread; a second transmission cavity is kept in the sliding locking part; a second spiral rod is arranged in the second transmission cavity; the right side end of the second spiral rod is in transmitting connection to a second motor; an arranging groove is formed in the bottom of the second transmission cavity; a cavity is kept in the sliding locking part at the left side of the arranging groove; a push block is arranged in the cavity; the upper side of the push block is inserted into the second transmission cavity and is matched with the second spiral rod by virtue of a screw thread; a placing groove is formed in the sliding locking part at the right side of the arranging groove; a clamping groove is formed in the lower end of the placing groove; and a guide groove is kept between the clamping groove and the arranging groove.

The invention discloses a novel lock bolt comprising a screw, a first locking member and a second locking member. The first locking member comprises a first nut, a boss and a small taper expansion sleeve, the first nut, the boss and the small taper expansion sleeve are integrally arranged, the outer wall of the boss is provided with a first external thread, and the inner wall of the first lockingmember is provided with a first internal thread matched with the screw; and the second locking member comprises a second nut, the two ends of the inner wall of the second nut are provided with a second internal thread and a third internal thread which are matched with the first external thread and the screw correspondingly, the middle portion of the inner wall of the second nut is provided with aninner tapered surface in interference fit with the small taper expansion sleeve, and the axes of the second nut and the first nut are eccentric. The novel lock bolt is of a new structure, ensures bolt strength, is more reliable in loosening prevention and can solve the problem about safe connection of equipment with large vibration or large temperature differences.

The invention discloses an interlocked stop nut assembly. The interlocked stop nut assembly comprises an eccentric nut, wherein a lower tapered boss is arranged at the lower end of the eccentric nut, the center of the lower tapered boss is not coincident with the thread center of the eccentric nut, and the eccentric quantity of the lower tapered boss is fit clearance between the eccentric nut and a bolt; a spacer is arranged at the lower part of the eccentric nut in a matched manner, a groove matched with the tapered boss at the lower end of the eccentric nut is formed in the spacer, and the center of the groove is coincident with the center of a center hole of the spacer. Compared with the prior art, the interlocked stop nut assembly is simple in structure, reasonable in bolt stress and tight in connection, looseness does not exist, and the interlocked stop nut assembly can bear vibration with large-torque impact force.

The invention belongs to the technical field of tunnel safety detection, and relates to a gas tunnel system anchor rod and an anchor rod detection safety construction method. The gas tunnel system anchor rod is installed in tunnel primary support sprayed concrete, and the tunnel primary support sprayed concrete comprises primary sprayed concrete and secondary sprayed concrete. The gas tunnel system anchor rod comprises an anchor rod body, one end of the anchor rod is provided with a lathe thread, and the end, close to the lathe thread, of the outer side of the anchor rod is sleeved with a casing pipe; a hollow hole channel is formed between the casting pipe and the anchor rod; and one end of the casing pipe and the lathe thread end of the anchor rod are provided with a plastic cap in a matched mode. The gas tunnel system anchor rod further comprises a sleeve connected with the lathe thread end of the anchor rod, the sleeve is internally provided with an internal thread matched with thelathe thread, and the end, away from the anchor rod, of the sleeve is provided with a standard part for detection in a matched mode. According to the gas tunnel system anchor rod, the surface of theprimary sprayed concrete is in mechanical connection with the long anchor rod, through the detection method, the anchor rod detection requirements can be met, in addition, the no-flame operation requirement for the interior of a gas tunnel can be met, and the construction safety requirement of the gas tunnel is met.

The invention discloses a combined lock nut. The combined lock nut comprises lock nut body, a combined nut body and a rubber gasket. When the combined lock nut is assembled and screwed, a concave circular truncated cone of the lock nut body squeezes a convex circular truncated cone of a split-type nut body in the combined nut body, the split-type nut body is stressed to move in the radial direction of a bolt, then a threaded mesh clearance between the bolt and the split-type nut body is eliminated, and an internal thread of the split-type nut body and an external thread of the bolt are engagedand locked in a clearance-free mode; and meanwhile, under the effect of the pre-tightening force of the lock nut body, the friction force between the split-type nut body in the combined nut body andthe external thread in the bolt is increased, so that unscrewing and looseness, caused by vibration, of spirals are effectively prevented, and good fastening and locking effects are achieved.

The invention discloses a combined type lock nut for an automobile. The combined type lock nut comprises a nut body, a clamping piece, an annular body, a positioning seat, a pin hole, a positioning bolt, a support sleeve and a connection groove, the connection groove is formed in the rear end of the nut body, an internal thread is formed in an outer wall of the connection groove, an external thread matched with the internal thread is formed in an outer wall of the support sleeve, the clamping piece is supported at the rear end of the support sleeve and fixedly connected with the nut body through a bolt, the annular body is fixed on the clamping piece, the positioning seat is arranged at the rear end of the annular body, the pin hole is formed in the positioning seat, the positioning bolt is inserted into the pin hole, and the clamping piece comprises an annular seat, a plurality of arc holes, a plurality of elastic pieces and a plurality of drop-proof bodies. Compared with the prior art, the combined type lock nut for the automobile has the advantages that the positioning bolt can be fixed conveniently, and the pin hole can be kept always corresponding to a bolt hole in a screw rod in a certain range.

The invention discloses an underwater sub system-master system matrix type synchronous release apparatus, which comprises a control cabin, a motor, a threaded connecting rod, support rods, a multi-connecting rod combination mechanism and a bracket, wherein the rotating shaft of the motor and one end of the threaded connecting rod form transmission connection, the other end of the threaded connecting rod is provided with a bearing, the bearing is fixed at one end of the support rod, a traction tray is arranged on the threaded connecting rod, the multi-connecting rod combination mechanism comprises a plurality of connecting rod groups, each connecting rod group corresponds to the release of a sub system, the motor drives the threaded connecting rod to rotate, and the threaded connecting roddrives the traction tray to move linearly, such that the connecting rod groups are driven to be unfolded so as to release the sub systems. According to the present invention, the parallelogram connecting rod is formed by using the umbrella skeleton model principle, such that the sub system cannot shake left and right during the release; and the four groups of the parallelograms are fixed on the same traction tray, and the movement up and down of the traction tray drives the four groups of the parallel rod structures to perform the same stretching and contraction movements so as to ensure the identity of the release.

The invention discloses a pull rod structure of a low-temperature container. The pull rod structure comprises a pull rod body, a metal sleeve and a pretightening nut. The metal sleeve is provided with a through hole, and a thread is arranged on an outer cylinder face. The metal sleeve is arranged at the end of the pull rod body, and the metal sleeve and the pull rod body are in interference fit. The pretightening nut is arranged on the metal sleeve. The pull rod structure is simple and compact, the needed installation space is small, the manufacturing cost is low, strength is high, safety is high, heat leakage is small, and performance is reliable.