94132 results about "Screw thread" patented technology

A stop for use with an electric drill bit, the stop having at least one threaded sleeve for positioning the stop relative to a surface into which the drill bit will extend. The stop may have both an inner and an outer sleeve. The sleeves are mounted coaxially, one inside the other about the drill bit. One of the sleeves, preferably the inner sleeve, provides coarse adjustment of the position of the shoulder relative to the tip of the bit, while the other, preferably the outer sleeve, provides fine adjustment of the position of the shoulder relative to the top of the bit.

An ultrasonic inspection robot for a threaded connection structure of a rotor internal cavity includes a main rack, a clamping module, a lifting module, a rotating module, a telescopic module and a probe buffer module. The present invention can be operated in a narrow, long and strongly restricted space, realizes the inspection of the nut that is inaccessible to the naked eye by carrying testing probes realizes the automated measurement function of placement and pressing of the carried probes, the switching between different test points, and all the points to be measured in an axial direction, and the deformation action of the device, realizes the extension and reduction of the axial and radial dimensions of the device, and completes all functions of placing and taking out the whole device. Moreover, the above functions can be realized only through one device.

The present disclosure provides a display mounting support, including a wall plate, two hanging assemblies, and two levelness adjusting members. The wall plate includes a mounting portion. Each of the two hanging assemblies defines a hooking portion for suspending on the mounting portion. The two levelness adjusting members respectively corresponds to two the hanging assemblies. Each levelness adjusting member includes an adjusting plate and an adjusting screw. The adjusting plate defines a threaded hole in a height direction. A threaded rod of the adjusting screw is threaded to the threaded hole of the adjusting plate, and an end of the threaded rod rests against the mounting portion of the wall plate. The adjusting plate is connected to the corresponding the hanging assembly. The threaded rod of the adjusting screw screwed into the threaded hole on the corresponding adjusting plate is capable of being changed by rotating the corresponding adjusting screw, so as to adjust a levelness of the display screen connected between the two hanging assemblies.

A fast adjustable dumbbell is provided, which includes a handle provided with a first accommodation cavity; a plurality of dumbbell pieces, two groups of dumbbell pieces are respectively provided at outer sides of two ends of the handle, and the dumbbell pieces are provided with first through holes; a rotatable shaft including two independent half shafts, which are provided in the first accommodation cavity, the two half shafts can move relative to the handle, and outer surfaces of the two half shafts are provided with symmetrical first threads; two transmission components respectively fixed at the two ends of the handle, and the transmission components are provided with second through holes corresponding to the first accommodation cavity. Hole walls of the second through holes are provided with second threads that are engaged with the half shafts; when the handle is rotated, the two transmission components are driven to rotate.

A friction stir additive welding screw is provided. In one aspect, the friction stir additive welding screw includes a first portion configured to be coupled to a friction stir additive welding device, and a second portion configured to penetrate a work-piece. The second portion includes a plurality of large threads, each large thread extending in a generally longitudinal direction. The second portion also includes a plurality of fine threads positioned along an edge of each large thread, and a plurality of teeth at a tip of second portion.

The invention discloses a force and acceleration composite sensor and an adjusting method, and belongs to the field of sensors. According to the technical scheme, the force and acceleration composite sensor comprises a sensor shell, an acceleration detection assembly comprises an acceleration detection core body, a first positioning face and a first pressing block are arranged in the sensor shell, the acceleration detection core body is located between the first positioning face and the first pressing block, and a screwing screw rod is arranged on the first pressing block; a first threaded hole is formed in the sensor shell, and the tightening screw is in threaded connection with the first threaded hole; the force detection assembly comprises a force detection core body, a second positioning surface and a second pressing block are further arranged in the sensor shell, the force detection core body is located between the second positioning surface and the second pressing block, and a jack assembly is arranged on the face, opposite to the force detection core body, of the second pressing block. According to the scheme, an adjustable pressing block structure is added, and adjustment of pre-pressure is achieved; and through the rigid connection mode of threaded connection, the springback phenomenon is avoided, and the pre-compression is more stable and accurate.

According to the drilling, sealing and injecting integrated anchor rod drilling intelligent monitoring system and method, a rod body is sequentially provided with a head-section wave-shaped threaded section, a middle-section large threaded section and a tail-section wave-shaped threaded section from the head end to the tail end, and a grouting channel is formed in the axis of the rod body; the drill bit and the round nut are respectively mounted at the head and tail ends of the rod body; the anti-shearing tray, the constant-torque pressing sheet and the hexagon nut are arranged on the outer side of the tail-section wave-shaped thread section in a sleeving manner; the built-in mixer is inserted into the grouting channel; the drilling machine is connected with the drilling, sealing and injecting anchor rod through a monitoring sensor arranged outside the hexagon nut in a sleeving mode. A strain type force sensor, a rotating speed sensor, a high-frequency vibration sensor, a well deviation instrument and a load sensor are arranged in the monitoring sensor. The method comprises the steps that a drilling machine rotates forwards to drive a drill bit to conduct drilling operation, deslagging operation is conducted synchronously, and in the drilling process, various sensors are used for collecting various parameters in real time; pre-tightening is conducted through reverse rotation of the drilling machine; a built-in mixer is used for grouting operation; and blocking treatment. According to the system and the method, the operation process can be intelligently monitored.

A friction stir additive manufacturing system configured to extrude a material is provided. In one aspect, the system includes a spindle configured to rotate about a central axis, the spindle including a conical portion having a plurality of threads at a deposition end of the spindle. The system also includes a housing configured to remain stationary relative to the spindle, the housing including a wire inlet extending through a side wall of the housing, an interior surface of the side wall defining a truncated cone terminating at a material exit, the truncated cone configured to receive the conical portion of the spindle. The system also includes a feeding system configured to feed a wire through the wire inlet and into a gap between the spindle and the truncated cone of the housing.

A fencing system that includes: posts with threaded flutes; rails that extend between the posts; and mounting brackets that support the rails and which are connected to the posts via fasteners that extend into the threaded flutes such that the mounting brackets are repositionable in relation to the posts to thereby vary the vertical positions of the rails.

A levelling device for tiles of the type used on a surface to level at least two adjacent tiles and comprising a base (1) designed to be arranged between at least two adjacent tiles (2) to act through contact with part of the lower surfaces of the said mutually adjacent tiles; from the base (1) there originates an elongated body (3), extending orthogonally therefrom, which is sized so as to protrude with respect to the upper surfaces of the tiles (2), is endowed with an external threaded section (31) whose task is to allow the said body to be gripped from the outside, and comprises a pressure and levelling body (4) which acts through contact with at least one of the upper surfaces of the at least two adjacent tiles (2); a handling unit (5), whose task is to allow the threaded section (31) to be gripped from the outside. The handling unit (5) is structured as at least two parts which are elastically secured but are divided in the upper area, where at least two nut screw portions (15) are formed which, once brought together in mutual contact, form a single nut screw or threaded hole (25) with which the threaded stretch (31) can be coupled. The handling unit (5) comprises a pressure surface (35), consisting of a portion of external frustoconical surface sized to couple exactly when in contact with the support surface (42), also shaped so as to generate, overall, a portion of internal frustoconical surface, which is formed integrally with and coaxially to the said pressure and levelling body (4), within which the said portion is axially positioned and sized so as to fully support the thrust exerted thereupon by the coaxial coupling with the pressure surface (35) of the handling unit (5). The said handling unit may be coupled freely so as to rotate around the axis common to the pressure and levelling body (4).

The utility model provides an angle steel tower foot welding processing platform, and relates to the technical field of welding processing platforms, the angle steel tower foot welding processing platform comprises a workbench, the top of the workbench is fixedly connected with a fixing assembly, and the top of the fixing assembly is fixedly connected with a plurality of limiting assemblies; the fixing assembly comprises a fixing frame, a plurality of mounting grooves are formed in the top of the fixing frame, and threaded rods are rotationally connected to the inner surfaces of the mounting grooves. According to the utility model, through the cooperative use of the first handle, the threaded rod, the guide rod, the moving block, the clamping block and the mounting groove, not only can the tower foot bottom plate be fixed, but also the limiting assembly can be driven to move synchronously, and then through the cooperative use of the second handle, the bidirectional screw rod, the clamping plate, the auxiliary rod and the limiting frame, the tower foot bottom plate can be fixed. And the cross-shaped tower frame on the tower foot bottom plate is clamped and fixed, so that the tower foot bottom plate and the cross-shaped tower plate are conveniently welded after being fixed, and the welding efficiency of the tower foot is improved.

An intraosseous system and methods for accessing a medullary cavity. The intraosseous system can include an access assembly and an advancement assembly. The access assembly can include an obturator assembly coupled to a needle assembly. The advancement assembly can include a housing having an inner wall and a drive screw coupled to an energy source. The drive screw can include a threaded portion extending from a drive screw head. The threaded portion can extend into the housing. The advancement assembly can further include an advancement nut threadably engaged with the threaded portion of the drive screw. The advancement nut can include an outer surface configured to slide along the inner wall a predetermined distance without rotating. The advancement assembly can further include a socket configured for attachment to the access assembly.

The utility model belongs to the technical field of bridge engineering, and particularly relates to a steel pipe butt joint device for extra-large bridge steel pipe construction, which comprises a threaded rod, a mounting plate fixedly connected with the other end of the threaded rod, a guide rod fixedly connected with one side of the mounting plate, a sleeve fixed on one side of the mounting plate, an electrode plate mounted on one side in the sleeve, and an electrode slice assembled on one side of a movable rod. An extension spring is fixedly connected between the electrode plate and the sleeve, and an auxiliary roller is mounted in the mounting rack; a threaded rod is rotated through a handle, an auxiliary roller is attached to the outer wall of a butt joint gap of a steel pipe under cooperation of a guide rod, in the rotating process of the steel pipe, if the phenomenon of irregular butt joint exists, the auxiliary roller can push a movable rod to move towards the interior of a sleeve, an extension spring is made to stretch inwards, an electrode plate makes contact with an electrode slice, and a warning lamp is controlled to be turned on; and an operator is reminded of untidy butt joint and need of adjustment, so that the welding quality can be ensured, and the stability of bridge construction is improved.

The invention discloses horizontal internal thread tapping equipment, which relates to the technical field of tapping equipment and comprises a main body, a hydraulic mechanism, a clamping, lifting and overturning mechanism, a tapping mechanism, a liquid supply mechanism and a cooling and lubricating mechanism. Through workpiece overturning and tapping direction optimization, the problem of scrap accumulation in traditional tapping is thoroughly solved, when a hydraulic mechanism is used for driving a clamping, lifting and overturning mechanism to descend, an overturning gear is meshed with a toothed plate to drive a workpiece to overturn by 180 degrees, the bottom-to-top tapping action of a screw tap is matched, scraps naturally fall by means of the gravity effect, and the tapping efficiency is improved. Meanwhile, chippings are further scoured through precise spraying of the cooling lubricating liquid, the chippings are prevented from being retained on the surface of the threaded hole or the screw tap, by means of the design, the additional friction resistance of the chippings to the screw tap is reduced, the abrasion and fracture risks of the screw tap are reduced (the service life is prolonged by 30% or above), the problems of thread disorder, size out-of-tolerance and the like caused by chipping extrusion are solved, and the service life of the screw tap is prolonged. The thread machining precision and the surface quality are remarkably improved, and the workpiece rejection rate is reduced.

The invention relates to the technical field of molds, and particularly discloses a multi-point forming mold which comprises an upper mold and a lower mold, the upper mold and the lower mold each comprise a mold base, a plurality of pressing head assemblies and a plurality of guiding pieces, the multiple pressing head assemblies are fixedly connected into the mold bases in a rectangular array mode, each pressing head assembly comprises a motor, a screw, a thread sleeve and a forming pressing head, and the motor is used for driving the screw to rotate; the screw is in threaded connection with the threaded sleeves, the forming pressing head is arranged at the end, away from the motor, of the screw and extends out of the threaded sleeves, the multiple guiding pieces are fixedly connected into the mold base in a rectangular array mode, the threaded sleeves are connected to the two sides, in the first direction and the two sides, in the second direction, of the guiding pieces correspondingly, and the threaded sleeves are slidably connected with the guiding pieces and can slide in the height direction of the guiding pieces. The first direction is perpendicular to the second direction. The multiple pressing head assemblies can be connected into a whole through the multiple guiding pieces, so that the transverse rigidity of the multi-point forming die is improved, meanwhile, the guiding pieces guide ascending and descending of the threaded sleeve, and the accuracy of the ascending and descending action of the threaded sleeve is guaranteed.

A chainring assembly includes a chainring carrier adapted to be coupled to a crank arm. The chainring carrier is rotatable about a rotation axis and includes an outer periphery having carrier threads. A chainring structure includes an inner periphery having chainring threads and an outer periphery comprising a plurality of teeth. The inner periphery of the chainring structure is threadably engaged with the outer periphery of the chainring carrier. In one embodiment, a power meter device includes a body having a torque input section and a torque output section, with the torque output section including an outer periphery having threads adapted to be coupled to a chainring structure.

A threaded fastener for securing a plate to a layered substrate is provided, as well as methods for installing the threaded fastener. An exemplary threaded fastener may include a head, and a shank having a longitudinal axis between a first end and a second end. The shank may be connected to the head at the second end. The shank may have a pointed terminus at the first end. The shank may have a first portion between the first end and a transition region. The first portion may include a first thread having a first thread profile that encircles the first portion. The shank may have a second portion between the transition region and the second end. The transition region may reside between the first portion and the second portion. The second portion may include a second thread having a second thread profile that encircles the second portion.

A drain assembly includes a drain body, barrel, plug, and sleeve. The drain body has an interior surface defining a channel along an axis and having interior threads thereon. The barrel has a central body having an upper end, with a flange extending radially outward therefrom and defining a landing surface. The central body has opposed exterior and interior barrel surfaces having exterior and interior threads, respectively. The interior barrel surface defines a channel alignable with the axis. The exterior threads are engageable with the drain body interior threads for axially adjusting the barrel relative to the drain body. The plug has a top surface and an outer body extending axially downward to a stop surface. An inner portion of the outer body extends axially below the stop surface and has external threads engageable with the barrel interior threads. The sleeve is sealingly receivable between the stop and landing surfaces.

The invention relates to the technical field of profile welding, and discloses a positioning welding device for a steel structure profile machining production line, which comprises a supporting bottom plate, a supporting frame is mounted at the top of the supporting bottom plate, and a driving screw rod is movably connected to one side of the bottom of the supporting frame through a bearing; and a motor used for driving the screw rod to rotate is installed on the outer side of the supporting frame, a threaded block is in threaded connection with the outer side of the driving screw rod, a connecting frame is fixedly connected to the bottom of the threaded block, and an annular driving guide rail is installed on the outer surface of the connecting frame. And through the multi-angle welding function, the problem that precise positioning is difficult to achieve when traditional welding equipment treats complex steel structure profiles is solved, and the welding quality and efficiency are improved. The angle of the laser welding gun can be rapidly adjusted through the unique positioning device, it is guaranteed that all faces of a profile can be evenly welded in the welding process, welding defects caused by improper welding positions are avoided, and therefore the stability and the bearing capacity of the whole structure are improved.

The utility model discloses a lifting device for quickly replacing a carrier roller of a belt conveyor. The lifting device comprises a base, a connecting pull rod and a lifting frame, the base comprises a base base table, an adjusting groove is formed in the surface of the base base table, an adjusting lead screw with threads is arranged in the adjusting groove, and the adjusting lead screw can rotate around the axis of the adjusting lead screw. The connecting pull rod comprises a fixed pull rod and a movable pull rod; the upper end of the fixed pull rod is hinged to the lifting frame. The lower end of the fixed pull rod is hinged to the base. The upper end of the movable pull rod is hinged to the lifting frame, a nut sleeve is arranged at the lower end of the movable pull rod and arranged on the adjusting lead screw in a sleeving mode, the nut sleeve can be driven to move away from or close to the lower end of the fixed pull rod by rotating the adjusting lead screw, and therefore the lifting frame is driven to descend or ascend. According to the utility model, the conveying belt can be quickly and conveniently lifted up from the lower part, so that the carrier roller can be quickly replaced, a series of work of fixing a chain hoist to hoist the conveying belt is omitted, the labor intensity is reduced, and the maintenance work can be completed by only 1-2 persons.

The invention discloses a drilling, sealing and injecting integrated construction method for a self-propelled anchor rod. A drilling machine and the self-propelled anchor rod are connected through a rod body connector; a drilling machine is used for providing driving force, meanwhile, a round nut is used for limiting a hexagonal nut, and torque is transmitted to a drill bit; the front-section spiral deslagging channel and the rear-section spiral deslagging channel are used for synchronously discharging slag and chips; the drilling machine is controlled to rotate reversely, the constant-torque pressing piece and the anti-shearing tray are compacted at the hole opening through the hexagonal nut, and the installation operation of the self-advancing anchor rod is completed until the pressing state is achieved; a grouting pump is used for enabling slurry to enter a slurry mixer through a grouting pipe, then the slurry is injected into the deep position of a hole through a grouting channel and a drill bit slurry outlet, in the process, a large threaded section of the middle section is used for conducting dense plugging on a hole gap, the pressure maintaining effect can be achieved, and effective plugging of the crack can be achieved; and when the grouting pressure is suddenly increased, the grouting pump is controlled to stop, the grouting operation is stopped, and then the slurry mixer is blocked. By means of the method, hole drilling, hole sealing and grouting operation can be integrally completed.

An adjustable device holder may include a first cradle portion coupled to a second cradle portion. A connector, such as a threaded rod, may be partially disposed within a first slot in the first cradle portion and a second slot in the second cradle portion. A fastener and a spring may be at least partially disposed in the second slot. A cradle adjustment knob may be coupled to the threaded rod such that rotation of the cradle adjustment knob in one direction may thread the threaded rod into the threaded fastener and rotation of the cradle adjustment knob in an opposite direction may thread the threaded rod out of the threaded fastener. The cradle adjustment knob may tighten the cradle portions against the device or spread the cradle portions apart. The spring may exert a force as the cradle portions are tightened against the device.

A stick-type cosmetic container comprises: a main body; a rotary body which is rotatably coupled to the main body and which has a rotary screw thread formed thereon; an elevation member, which is coupled to the inner side of the main body and rises, includes a stick cosmetic, and has an elevation screw thread; a remaining-amount withdrawal member which is coupled to the elevation member so as to push the stick cosmetic outward, and which has a screw protrusion; and an elastic member provided between the elevation member and the remaining-amount withdrawal member.

A threaded fastener for securing a plate to a layered substrate is provided, as well as methods for installing the threaded fastener. An exemplary threaded fastener may include a head, and a shank having a longitudinal axis between a first end and a second end. The shank may be connected to the head at the second end. The shank may have a pointed terminus at the first end. The shank may have a first portion between the first end and a transition region. The first portion may include a first thread having a first thread profile that encircles the first portion. The shank may have a second portion between the transition region and the second end. The transition region may reside between the first portion and the second portion. The second portion may include a second thread having a second thread profile that encircles the second portion.

The invention discloses a thermochemical coupling intelligent transformer substation dehumidification and refrigeration system, and relates to the technical field of transformer substation dehumidification and refrigeration systems, the thermochemical coupling intelligent transformer substation dehumidification and refrigeration system comprises a shell, a cooling block, a fan, an air inlet, an air outlet and an air adjusting assembly, the inner wall of the shell is provided with a processing box, and the inner wall of the processing box is provided with the cooling block; a draught fan is installed on the inner wall of the treatment box, and an air adjusting assembly is installed on the inner wall of the treatment box. Cooling is conducted through a cooling block through wind power, a first motor rotates to drive a threaded rod to rotate, the threaded rod rotates to drive a threaded sleeve to move, the threaded sleeve moves to drive an L-shaped rod to move, the L-shaped rod moves to drive a first sliding barrel to move, and the first sliding barrel moves to enable the L-shaped rod to drive a flow guide plate to move through a rotating shaft; the flow guide plate moves to change the position, and cooled air is directionally discharged through the air outlet through blocking of the flow guide plate, so that the functions of conveniently adjusting the refrigeration position and improving the cold position applicability of the dehumidification refrigeration system of the transformer substation are achieved.

The invention discloses a metal casting machining pouring device capable of preventing air hole generation, and relates to the technical field of metal casting machining, the metal casting machining pouring device comprises a base, two sets of stand columns are symmetrically installed at the top of the base, a fixing plate is fixedly installed at the tops of the two sets of stand columns, and the metal casting machining pouring device further comprises a pouring assembly arranged above the base, the rotating base is arranged on one side in the rotating base, the rotating base is hinged to one side of the top of the base, threaded rods are symmetrically connected to the upper portions of the two sides in the rotating base in a threaded mode, and one end of each threaded rod is rotationally connected with a positioning plate; according to the mold for casting the metal casting, in the casting process of the metal casting, the mold can be kept inclined in the casting process and can gradually rotate to be perpendicular to the horizontal plane in the casting process, the inclination angle of the mold is adjusted according to the type of the metal casting, the situation that the machining quality of the casting is affected after casting is completed is avoided, and practicability is improved.

The invention relates to the technical field of fastener process production, in particular to a process parameter control method and system applied to fastener production. The method comprises the following steps: acquiring three-dimensional cutting force of a tool-workpiece contact area in a fastener thread machining process in real time, and generating cutting force dynamic fluctuation characteristic data; the real-time abnormal situation of the current machining process is recognized according to the cutting force dynamic fluctuation characteristic data, a tool wear mode is judged, thread ring machining deviation prediction is conducted, and a predicted thread geometric deviation value is generated; and adjusting multiple machining control parameter values according to the predicted thread geometric deviation value, and carrying out real-time machining feedback monitoring so as to realize fastener production self-adaptive control. According to the method, intelligent recognition of the tool wear mode and accurate prediction of the machining deviation are achieved through cutting force sensing, and it is ensured that the thread machining precision of the fastener is stable and controllable through multi-parameter cooperative self-adaptive regulation and control.

The invention provides equipment and a process for extracting lithium from lepidolite frame residues and synthesizing urea gypsum, and relates to the technical field of solid waste resource recycling, the equipment comprises a reaction tank, a sealing plate, a reciprocating motion mechanism and a multi-point detection mechanism; the reciprocating motion mechanism comprises a bidirectional threaded lead screw and a threaded block, the bidirectional threaded lead screw is transversely and rotatably connected to the inner wall of the reaction tank, the threaded block is in threaded connection with the bidirectional threaded lead screw, and the bottom of the threaded block is slidably connected with a guide seat. According to the scheme, when the top of a rotating wheel is in contact with a concave position of a convex plate, a rotating seat can drive a sliding rod and a PH detector to move upwards under the action of a spring, so that the bottom end of the PH detector is separated from filtrate, and a plurality of convex parts are arranged on the convex plate, so that the filtrate is subjected to multi-point real-time detection; lithium ion loss caused by co-precipitation of lithium, iron and aluminum due to over-high local pH value of the filtrate is avoided, and the concentration of the lithium solution is effectively improved.

The invention discloses a method for measuring the interface contact force of a bolt joint, which comprises the following steps of: establishing a relational expression between the contact surface area of a bolt and a base material and the interface contact force of the bolt joint according to different bolt thread types, and associating the interface contact force of the bolt joint with electric contact to construct a bolt thread force-electric contact model; the interface contact force of the bolt joint can be calculated through easily obtained physical parameters, so that the contact force distribution of the connecting piece can be quickly and effectively analyzed and measured, and meanwhile, the use condition of the connecting piece is evaluated.

The invention relates to the related technical field of steel column construction, and particularly discloses a super high-rise building steel column embedded type column foot construction device and a construction technology thereof.The construction device comprises a foundation, a steel column, a rib plate, a bottom plate and anchor bolts, the position, below the rib plate, of the steel column is fixedly connected with a pouring plate, and a cavity is formed in the bottom plate; a fixing assembly used for fixedly clamping a steel column is arranged below the bottom plate, an auxiliary assembly used for removing bubbles from concrete is arranged on the side face of the steel column, two sets of clamping blocks move in a cavity of the bottom plate, the bottom plate can be clamped and fixed, and the stability of the steel column during pouring is improved; and meanwhile, when a screw rod rotates to drive a threaded sleeve to rotate in an adjusting block, a steel column above the adjusting block can be pulled for position adjustment, and the adjusting block can drive a wedge-shaped block to extrude a cylindrical head and apply reverse extrusion force to a driving part, so that the clamping and limiting effects of a clamping block on a bottom plate are improved.