35results about "Bolts" patented technology

The invention provides a locking assembly (2) suitable for use in locking an aircraft seat in an upright position in an aircraft, for example. The locking assembly (2) includes a locking stud (10) having a locking cavity (12) and an aperture (14) for receiving the locking stud (10). A locking means (18) engages the locking cavity (12) when the locking stud (10) is received in the aperture (14). The locking assembly (2) also includes an unlocking means, which includes material adapted to contract when activated, such as shape memory alloy wire, to allow for disengagement from the locking cavity (12). The locking stud (10) is guided towards the aperture (14) by a locking stud guide (20).

A simple engaging device comprises a locating base with at least a longitudinal hole, and at least a locating stem corresponding to the locating base with an engaging head and a joining part. Two flat locating parts are oppositely disposed at two long sides of the longitudinal hole; each flat locating part has a slant plane, a first slender retaining projection, a step, and a second slender retaining projection; the slant plane makes the engaging head and the joining part easy to be assembled and is capable of tightly guiding the joining part to reach the first thin retaining projection at which the engaging head and the joining part can be retained firmly without loosening, and the step and the second thin retaining projection are capable of engaging the engaging head and the joining part to the locating parts in case of the engaging head and the joining part being worn out.

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.

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 lock for an excavator wear assembly. The lock has a first member a key way located on an internal face of the first member. The lock also has a second member having a key located on an internal face of the second member such that the key is receivable within the keyway of the first member. Furthermore, the lock has a fastening member receivable within the first member and the second member to thereby releasably secure the first member to the second member.

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 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 a combined bolt which comprises a head, a combined screw and a working nail end, wherein one end of the combined screw is fixedly connected with the head, and the other end of the combined screw is in assembly connection with the working nail end; the combined screw comprises a plurality of sections of cylinders with threads; the cylinders are in assembly connection; and one end of the working nail end is connected with the tail cylinder, and the other end of the working nail end is conical. In this way, the traditional bolt structure is replaced, the screw length can be adaptively adjusted, the simple drilling action can be carried out by a conical head in inconvenient situation, and the combined bolt is powerful in function, wide in application range and convenient and easy to operate.

A fastener for fastening adjacent portions of a structure requiring fastening is described. The present fastener enables delivery of grout or a sealing composition into a passage between or adjacent the portions of the structure or between adjacent parts of the structure. The portions of the structure may include tubbing rings and segments thereof. The fastener includes an inlet and at least one outlet. The inlet and at least one outlet are connected by a channel. Grout or sealing composition can be delivered into the inlet where it flows through the channel, outwardly through the at least one outlet and into the passage requiring sealing. A method of sealing a passage in a formation using the fastener is also described.

The invention discloses a deformed-face grooved locknut. The deformed-face grooved locknut comprises a jam nut and a grooved nut, wherein the grooved nut is provided with a groove; the non-bearing face of the grooved nut comprises a compressing face; a deformed face is arranged close to the compressing face in an extending manner; the compressing face is located at the upper end of the groove mouth of the groove. During installation, the bearing surface of the grooved nut is in contact with a clamped workpiece, the non-bearing face of the grooved nut is screwed, tightened and compressed by the jam nut, the compressing face of the grooved nut bears pressure to compress the groove of the grooved nut, and locking is completed. The deformed-face grooved locknut has a better anti-looseness effect. Owing to the down-pressing function of the jam nut, the friction moment between the compressing part and the nut can be well controlled. The deformed-face grooved locknut can provide a stable and reliable anti-looseness moment, is simple in process, utilizes a mature grooved nut processing technology, and is relatively low in cost.

The invention relates to a fixing structure for a plastocene model ABS component. The fixing structure comprises a mold core foam component, a plastocene cover layer component arranged on the mold core foam component and an ABS component fixedly connected with the plastocene cover layer component. The fixing structure further comprises a positioning installation unit, wherein the positioning installation unit comprises positioning parts arranged on the back side of the ABS component and limiting blocks used in cooperation with the positioning parts, limiting holes for the positioning parts to penetrate through are formed in the plastocene cover layer component, the limiting blocks are arranged on the mold core foam component, and the positioning parts penetrate through the limiting holes in the plastocene cover layer component and are connected with the limiting blocks in the mold core foam component, so that the ABS componnet is fixed to the plastocene cover layer component by the positioning parts and the limiting blocks together. Compared with the prior art, the overall structure of the fixing structure is simple, the working efficiency can be effectively improved, the accuracy of installation between an ABS cylinder and plastocene holes is guaranteed, the ABS component can be effectively prevented from falling off, no extra processing cost needs to be added, and the fixing structure is economical and practical.

The invention discloses a primary-auxiliary bolt which consists of an auxiliary bolt and a primary bolt. The primary-auxiliary bolt is characterized in that the auxiliary bolt consists of a first screw head and a first bolt column, wherein external threads are formed at the periphery of the first bolt column; the primary bolt consists of a second screw head and a second bolt column; the second bolt column is a hollow structure; internal threads are formed in the inner wall of the second bolt column; external threads at the periphery of the first bolt column are matched with internal threads on the second bolt column; cross grooves are formed in end surfaces of the first screw head and the second screw head respectively. The novel primary-auxiliary bolt is used for connecting between parts, can be fastened in a bidirectional manner, firm in connection after being fastened, free of a bolt head exposure phenomenon, and attractive and neat, and does not injure an operator.

The invention discloses a hexagonal flange face extrusion sealing bolt. The hexagonal flange face extrusion sealing bolt comprises a bolt body, a hexagonal nut, a round rod, an external threaded rod, a hexagonal round pipe, a flange and a spring, wherein the bolt body is composed of the hexagonal nut, the round rod and the external threaded rod, the vertically-arranged round rod is arranged on the lower end face of the hexagonal nut, the vertically-arranged external threaded rod is arranged on the lower end face of the round rod, the hexagonal nut, the round rod and the external threaded rod are coaxial, the outer diameters of the hexagonal nut, the round rod and the external threaded rod are gradually reduced, the round rod is sleeved with the coaxial hexagonal round pipe, the spring is connected between the hexagonal round pipe and the hexagonal nut, the round rod is sleeved with the spring, the lower end face of the hexagonal round pipe is provided with the coaxial flange, and the inner diameters of the hexagonal round pipe and the flange are the same. According to the hexagonal flange face extrusion sealing bolt, the spring is arranged between the nut and the hexagonal round pipe, and after the bolt is installed, the spring can press the flange on the installation face, so that good sealing performance is achieved between the lower end face of the flange and the installation face.

The invention discloses a stainless branching screw, which comprises a main screw body, a first fixing groove, a second fixing groove, a screw rod, threads and a mounting hole, wherein the first fixing groove is arranged at the front end of the main screw body, and the second fixing groove is arranged at the back end of the main screw body; the screw rod and the main screw body are integrated and are arranged at the top end of the main screw body, and the threads are arranged on the edge of the screw rod; and the mounting hole is formed at the tail end of the main screw body. Through the method, the stainless branching screw provided by the invention has the advantages of simple structure, long service life and waterproof and stainless performances.

The invention relates to an assembling method of mechanical parts. The assembling method includes providing a first mechanical part made of carbon fiber materials or carbon fiber composites and provided with screw holes and providing a second mechanical part provided with through holes; coating glue at the bottom of screws; passing the screws after being glued through the screw holes and screwing the screws into the screw holes until the screw holes stop moving; standing still after the screw holes stop moving until glue solidifies into membrane to form a gel layer. With the assembling method of the mechanical parts, assembling strength of the screws and the screw holes is increased, screw loosening condition during load-bearing operation of mechanical arms is avoided, operating accuracy and working efficiency of the mechanical arms are improved, equipment failure or shutdown is avoided and operation is simple and convenient.

The invention discloses an anti-loosening device for preventing bolt loosening, and belongs to the technical field of tools or accessories for loosening preventing of UHV transmission line drainage connecting bolts. The anti-loosening device comprises a supporting frame and at least one sliding support in sliding connection with the supporting frame through a first sliding device in the first direction, and each sliding support is provided with at least one polygonal anti-loosening hole clamped to a nut of the bolt. The anti-loosening device can solve the technical problem that in the prior art, a bolt at the position of a drainage plate is prone to loosening, and the technical effect of preventing bolt loosening can be achieved.

The invention discloses an anti-unscrewing bolt which comprises a bolt body and an anti-unscrewing gasket, wherein a nut is arranged or not arranged; an anti-unscrewing piece is arranged on the anti-unscrewing gasket; and when the anti-unscrewing gasket is connected to the bolt in a sleeved mode, the nut is screwed or the bolt body is screwed, so that the anti-unscrewing piece and the bolt body form a wedging structure, or the anti-unscrewing piece and a piece to be fixed form an anti-rotating structure. For the anti-unscrewing bolt disclosed by the invention, by using the wedging structure for tensioning, the nut or the bolt is prevented from loosening and unscrewing, or the anti-rotating structure is used for fixing the bolt and preventing rotation between the bolt and the fixed piece, and unscrewing prevention is achieved; according to the designs of different use environments, the application range is wide, and the anti-unscrewing effect is ideal; and the nut with lubricating oil is arranged, so that the situation that the nut cannot be dismounted due to corrosion during dismounting is avoided.

The invention discloses a screw-free nut, which is characterized by comprising a base body, a nut assembly, a rubber gasket, a fixing cover and a positioner; the base body is a steel integrated piece;the base body is provided with a cavity with an upward opening; a central through hole communicating with the cavity is formed in the center of the lower part of the base body, and the base body andthe central through hole are coaxially arranged; the nut assembly is composed of a first nut piece, a second nut piece, a third nut piece and a fourth nut piece which are spliced in sequence; and eachnut piece is provided with a part of a nut internal thread; when the nut pieces are spliced together, a continuous nut internal thread of the nut assembly is formed. The nut assembly is arranged in the cavity of the base body, the fixing cover is fixedly connected with the base body, and the rubber gasket is arranged between the fixing cover and the nut assembly. The base body is arranged in a nut cavity of a mounting shell of the positioner.

The invention discloses a capping type antiknock anti-loose pipe nut. The capping type antiknock anti-loose pipe nut comprises a compression nut and a back-fastening nut pressed on the compression nut, wherein the compression nut is a hexagonal nut, and one end of an internal thread of the compression nut is of a pipe thread structure with a larger end and a smaller end; a compression face and the upper end face of the compression nut and an axle line vertical line of the compression nut are not parallel, but the dip directions are completely coincident, and an included angle of the upper end face of the compression nut and the axle line vertical line of the compression nut is larger than the included angle of the compression face of the compression nut and the axle line vertical line of the compression nut, namely, the slope coefficient of the upper end face of the compression nut is larger than that of the compression face of the compression nut; the back-fastening nut is a hexagonal nut, and an internal thread of the back-fastening nut is of a pipe thread structure with a larger end and a smaller end; and the upper end face and the lower end face of the back-fastening nut are parallel and are in parallel with an axle line vertical line of the back-fastening nut.

The invention provides a positioning pin with the improved structure, and belongs to the technical field of machinery. The positioning pin solves the problem that an existing positioning pin is poor in stability. The positioning pin with the improved structure comprises a pin body, a main oil hole is formed in the pin body in the axial direction of the pin body, a plurality of auxiliary oil holescommunicating with the main oil hole are formed in the side wall of the pin body in the radial direction, a positioning groove is further formed in the side wall of the pin body, nitrile butadiene rubber is installed in the positioning groove, a fastener is fixedly arranged on the nitrile butadiene rubber, a part of the fastener protrudes out of the side wall of the pin body, the fastener comprises a fastening part and guide parts, wherein the two ends of the fastening part extend outwards to form the guide parts, the end surfaces of the two guide parts are both planes, one ends of the guide parts are provided with guide-in corners, the outer ends of the guide-in corners are slightly lower than the side wall of the pin body, and round angles are formed between the other ends of the guide parts and the fastening part. The positioning pin has the advantages of being simple in structure and good in stability.

The invention provides a unidirectionally-assembled fastening bolt used for fastening connecting between thin plates, and relates to the field of bolt connecting. The unidirectionally-assembled fastening bolt used for fastening connecting between the thin plates comprises a bolt and a clamp. The bolt comprises a screw cap. A boss is arranged at the top of the screw cap. The upper surface of the boss is fixedly connected with a screw. A first through hole is formed in the outer surface of the screw. A second through hole is formed in the position, close to the top, of the outer surface of the screw. The outer surface of the screw is in threaded connection with a nut. A gasket is arranged between the nut and the screw cap. Through structural reasonable design on the clamp and the bolt, the structure is simple, and use is convenient; and through simple operation, bolt fastening under the half-sealed situation can be completed, and the problems that under the half-sealed situation, the bolt cannot be mounted in, one end of the bolt cannot be fixed, and consequently the bolt and the nut rotate at the same time are solved.

A vertically adjustable fixture, such as a ceiling hook, comprises a base member adapted to be secured to an overhead surface, e.g. a ceiling, a beaded cable retractable in and extendable out of the base member, and a hook at a lower end of the cable for connection to an article such that the article may be suspended from the ceiling. An extension/retraction mechanism provided in the base member includes a fixed axle and a reel rotatable around the axle, with a spring force existing therebetween, the cable being partly wound around the reel. The elevation of the hook is maintained by one of the beads of the cable firmly lodging, in a locked position thereof, in a recess defined at the bottom of the cover. Manipulation of the cable to dislodge the bead from the recess unlocks the cable, thereby allowing the elevation of the hook to be adjusted.

The invention relates to the technical field of cold headers, in particular to an automatic feeding type cold header. The automatic feeding type cold header comprises a cold header body, a motor is installed on the rear end face, close to the right end, of a feeding supporting plate, an output shaft is coaxially connected with a traction roller, a fixing plate is arranged in a clamping groove, a roller is arranged in the middle of the fixing plate, a fixed clamping plate is installed on the portion, close to the rear end face, in the feeding supporting plate, a movable clamping plate is installed on the portion, close to the front end face, in the feeding supporting plate, a second pulley is arranged on the rear end face of the movable clamping plate and corresponds to a first pulley, and a threaded rod is arranged in the middle of the front end face of the movable clamping plate. According to the automatic feeding type cold header, the motor is matched with the traction roller, bars or wires needing to be machined are preliminarily dragged, the fixing plate is matched with the roller, traction use is better carried out, the movable clamping plate is matched with the threaded rod, the distance between the movable clamping plate and the fixed clamping plate is convenient to adjust, the automatic feeding type cold header is suitable for clamping the bars or the wires with different thicknesses, and feeding and use are more stable.