3528results about "Locking fasteners" patented technology

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 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 solar mounting system includes at least one photovoltaic module (“PV module”) having a module frame and a support structure including at least one elongated support rail configured to support the at least one photovoltaic module (“PV module”). A fastener assembly or hardware stack is used to mount and secure the at least one PV module to the elongated support rail of the solar mounting system. The fastener assembly includes a fastener having a fastener head including at least one abutment surface that prevents rotation of the fastener during mounting of the PV module to the support structure, and, optionally, at least one projection that pierces a protective coating applied to the PV module to thereby establish an electrical bond and grounding of the PV module with the support structure during installation.

The invention discloses a double-acting integrated hydraulic nut and a hydraulic nut system. The double-acting integrated hydraulic nut comprises a cylinder body, a piston, a cylinder cover, a locking nut, an outer hexagon head bolt and a locking sleeve. A mounting plane attached to a workpiece is arranged at the bottom of the cylinder body, and the piston is arranged in an inner cavity of the cylinder body in an axial sliding mode. The outer hexagonal head bolt sequentially penetrates through the axial through hole of the piston and the bottom of the cylinder body, and the threaded end of the outer hexagonal head bolt is meshed with a workpiece in a threaded mode. The cylinder cover is arranged at the top of the cylinder body; the locking nut is in threaded connection with the piston rod and is in contact with the top surface of the cylinder cover; a pressurizing oil port connected with a hydraulic pump station is formed in the side wall of the cylinder body. The hexagonal head of the outer hexagonal head bolt is sleeved with the locking sleeve which is in driving connection with the electric wrench. Due to the fact that the bearing seat bolts are compact in layout and large in bolt pre-tightening force requirement, the experiment platform can be rapidly mounted and dismounted, and working time and cost are greatly reduced.

An assembly having a chassis, two supports with a plate and a guide, a nesting system with a bore, a reservoir containing an extinguishing fluid and with two fastening tabs, two bearing tabs and a peg, and a fastener. The reservoir is able to move in translation between a premounting position in which each fastening and bearing tab rests on a plate and each guide guides the fastening and bearing tabs to align the peg and the bore, and a mounting position in which each fastening tab rests on the plate, the peg is introduced into the bore, the bearing tabs no longer rest on the plates and the fastener fastens each fastening tab to the plate. Such an assembly allows the reservoir to be withdrawn and put in place quickly and easily.

A locking-mode-selectable lock bolt and nut device comprises a bolt and a nut, the main fastening nut is arranged on the bolt in a sleeving manner; the fixed locknut is arranged on the bolt in a sleeving manner and is positioned above the main fastening nut; wherein a bolt locking groove is formed in the outer wall of one side of the bolt in the length direction, the section of the bolt locking groove is triangular, an acute angle is formed by two side faces in the bolt locking groove, one side face is arranged in the radial direction of the bolt, and the other side face is an inclined face; mounting through holes are symmetrically formed in two opposite surfaces of the fixed locknut, and a screw hole, a round hole and a square hole are sequentially formed in each mounting through hole from outside to inside; the inner diameter of the round hole is larger than that of the screw hole, and the width of the square hole is smaller than that of the round hole. And the two locking assemblies are respectively inserted into the two mounting through holes of the fixed locknut.

The invention discloses a self-tightening spring (1) which is characterized in that a bolt hook (2) is arranged at one end of a tension spring main body (24) and is linear, and a nut hook (3) is arranged at the other end of the tension spring main body (24) and is an L-shaped inverted-inserting hook. The matched bolt (6) is characterized in that the tail end of a common bolt is provided with a bolt hook hole (4), and the bolt hook hole (4) is a radial through hole into which a bolt hook (2) can be inserted. The nut is characterized in that at least one nut hook hole (5) and a blind hole parallel to the hexagonal side face and the end face of the nut at the same time are formed in the hexagonal side face of a common nut. The invention further discloses an anti-loosening thread pair (25), which is characterized in that the bolt hook (2) is inserted into the bolt hook hole (4), the nut hook (3) is lengthened and inversely inserted into the nut hook hole (5), the tension spring body (24) is screwed around the screw rod (7) to tighten the nut (9) and the bolt (6), energy is continuously compensated, loosening displacement of the thread pair is self-tightened, and the purpose of never loosening is achieved.

The present disclosure provides a tolerance compensation fastening assembly for fastening a second part to a first part by cooperating with a nut element provided on the first part. The tolerance compensation fastening assembly comprises a bolt, a compensation element, a connection element, and a holding means. The compensation element comprises a body and a flange, and the flange is provided at one end of the body and defines a compensation hole in communication with a channel of the body. A bolt head is accommodated in the channel and is blocked by the flange, and a bolt rod passes through the compensation hole. The connection element comprises a connection disc and connection legs, and the flange is located between the bolt head and the connection disc. The connection disc is provided with a connection hole to receive the bolt rod. The connection legs are configured to connect the connection disc to the second part. The holding means is provided on the connection disc and the bolt rod, and is configured to couple the bolt rod to the connection disc to prevent the bolt rod from being withdrawn from the connection hole, thereby holding the bolt, the compensation element and the connection element in a pre-assembled position.

The utility model discloses a clamping structure of a wind turbine generator monitoring device, and belongs to the technical field of wind power equipment monitoring. Comprising a wind turbine generator which is fixed to the ground, and further comprises a base, connecting pieces, a clamping box body, connecting holes, connecting plates, elastic clamping rings, reinforcing blocks, a monitoring supporting plate and matching holes, the base is vertically arranged, the connecting pieces are fixed to the two horizontal sides of the base, and a plurality of mounting holes are formed in the connecting pieces; the connecting pieces are fixedly connected with the wind turbine generator by inserting bolt fasteners into the mounting holes, a space exists between the base and the wind turbine generator to form a wire harness channel, and the clamping box body is fixed to the side, away from the wind turbine generator, of the base. After the connecting piece is fixedly connected with the wind turbine generator, the connecting plate is inserted into the clamping cavity, the clamping hole is aligned with the connecting hole to form the connecting channel, then the connecting piece is inserted into the connecting channel, the reinforcing block and the clamping box body can be clamped and fixed, and installation is convenient and fast.

The utility model discloses an anti-loosening double-nut pressing type quick coupler, and relates to the technical field of sealing couplings. Comprising a connector body, and a continuous fifth threaded section is arranged on the outer wall of the connector body; the locknut set comprises a fastening nut and a locking nut, a fixed section is formed at one end of the fastening nut, a continuous first threaded section matched with the fifth threaded section is arranged on the inner wall of the fastening nut and the inner wall of the fixed section, a second threaded section is arranged on the outer diameter of the fixed section, a locking section is formed at one end of the locking nut, and the locking section is matched with the second threaded section. A third threaded section matched with the second threaded section is arranged on the inner wall of the locking section, and a fourth threaded section matched with the fifth threaded section is arranged on the inner wall of the locking nut; the fastening nut and the locking nut are in threaded connection through the second threaded section and the third threaded section, and the locking nut is in threaded connection with the fifth threaded section on the connector body through the fourth threaded section. The fastening nut and the locking nut are fixed in a detachable connection mode.

The locknut comprises a first nut body, the first nut body comprises a first hexagonal block, a first connecting threaded hole and a locking hole are formed in the first hexagonal block, and a hole shoulder is formed in the communicating position of the first connecting threaded hole and the locking hole; clamping blocks are arranged in the circumferential direction of the axis of the locking hole at intervals, deformation blocks with elastic deformation capacity are arranged between the clamping blocks and a hole shoulder, a separation gap is formed between every two adjacent clamping blocks, each clamping block is provided with an inwards-sunken arc wall, and locking internal threads are arranged on the inner side of each arc wall. The lower end face of the clamping block protrudes out of the lower end of the first hexagonal block. During installation, self-locking is formed, the anti-loosening performance is high, loosening detection can be carried out, and the locking state and the loosening condition of the operation nut can be monitored in real time.

The utility model provides an anti-impact connecting bolt fastening structure of a high-voltage isolating switch, and relates to the technical field of high-voltage switches, the anti-impact connecting bolt fastening structure comprises a high-voltage isolating switch base and a switch anti-impact bolt connecting assembly, through bolts penetrate through the inner sides of base bolt holes, the lower side of a bolt head rubber mat is provided with a back shore spring, and the back shore spring is connected with the switch anti-impact bolt connecting assembly. A limiting sleeve is connected to the outer side of the jacking spring in a sleeving mode, a nut rubber mat is arranged on the lower side of the limiting sleeve, a connecting nut is arranged on the lower side of the nut rubber mat, a metal locking nut is arranged on the lower side of the connecting nut, and due to the effective buffering effect of a damping rubber mat, damage of vibration to the base is remarkably reduced, and the service life of equipment is prolonged; and through rotation of the penetrating bolt, rapid mounting and dismounting can be achieved, firm and reliable connection is ensured, and through adjustment of the fastening strength of the penetrating bolt, impact loads under different working conditions can be flexibly coped with, and stable operation of equipment is ensured.

A wheel assembly to be coupled to a hub of a vehicle may include an inner rim to be coupled to the hub of the vehicle, an outer rim surrounding the inner rim. A rigid cover ring may be coupled to the outer rim and extend radially inward toward the inner rim. Gas springs may be operatively coupled between the inner and outer rims to provide a gas suspension for relative movement between the inner and outer rims. Fastener assemblies fasten the rigid cover ring to the outer rim, fastening each gas spring to the outer rim, or fastening each gas spring to the outer rim. Each fastener assembly may include a fastener and a pair of indicator-lock washers carried by the fastener. Each indicator-lock washer may have respective sloped surfaces slidably engaging one another to permit relative rotation so that loosening from a fully tightened position exposes a gap.

A wheel assembly to be coupled to a hub of a vehicle may include an inner rim to be coupled to the hub of the vehicle, an outer rim surrounding the inner rim, and gas springs operatively coupled between the inner and outer rims to provide a gas suspension for relative movement between the inner and outer rims. The wheel assembly may also include tread assemblies carried by the outer rim. Fastener assemblies may be configured to perform fastening at least one tread assembly to the outer rim, fastening each gas spring to the outer rim, or fastening each gas spring to the outer rim. Each fastener assembly may include a fastener, and a pair of indicator-lock washers carried by the fastener. Each indicator-lock washer may have respective sloped surfaces slidably engaging one another to permit relative rotation so that loosening from a fully tightened position exposes a gap therebetween.

A friction spacer adapted to be interposed between two mechanical components in order to transfer a force between the two mechanical components, the friction spacer including a flat part having two opposite surfaces defining a thickness, and a plurality of protuberances projecting from at least one of the surfaces, the protuberances of the plurality of protuberances extending from the at least one of the opposite surfaces by a determined average height. The flat part and the protuberances are produced from the same metal material, and the same metal material continuously extends between the flat part and the protuberances.

The invention relates to a main bearing locking nut anti-loosening structure and an aero-engine, belongs to the technical field of aerospace, and solves the problem of unreliable mechanical anti-loosening locking of a locking nut in the prior art. The anti-rotation device comprises a locking nut, a locking plate and an anti-rotation sleeve which are arranged outside a shaft neck of an engine rotating shaft in a sleeving mode. The locking nut fixing section is fixed to the shaft neck, and a first groove is formed in the outer portion of the clamping section in the circumferential direction. The locking plate comprises a locking plate main body, a first tooth and a second tooth; the first tooth is embedded into the first groove to limit the circumferential movement of the locking nut; the anti-rotation sleeve fixing part is connected with the shaft neck; the inner wall face of the anti-rotation part is attached to the outer wall face of the locking nut and the outer wall face of the locking piece. And the end part of the anti-rotation part is provided with a notch which is mutually embedded with the second tooth. Triple locking of the main bearing locking nut can be achieved, locking is reliable, and the structure is simple.

The invention discloses a screw locking structure with a spring tip cone, which comprises a screw which penetrates through a first connected piece and then is in threaded connection with a second connected piece, the lower section of the screw is a locking section, the locking section is in threaded connection with the second connected piece, the locking section is provided with a first taper hole, and the spring tip cone is arranged in the first taper hole. A convex cone matched with the first conical hole is arranged in the threaded hole of the second connected piece, the smaller end of the convex cone faces the head of the screw, a spring is fixed to the larger end of the convex cone and connected with the second connected piece, gaps are formed in the hole wall of the first conical hole and distributed in the axial direction of the screw, and one end of each gap extends to the bottom of the screw. Compared with the prior art, the structure is simple, the convex cone is sleeved with the first conical hole and downwards extrudes the spring, the convex cone opens the locking section so as to increase radial pressure, and the external thread of the locking section tightly holds the internal thread of the second connected piece so as to achieve the anti-loosening effect; the spring can apply axial force to the screw through the convex cone to increase the pre-tightening force of the screw so as to achieve looseness prevention.

The utility model relates to the technical field of anti-loosening bolts, in particular to an anti-loosening bolt for a wind driven generator, which comprises a bolt and a nut, the bolt comprises a head and a screw rod, the nut is in threaded connection with the surface of the screw rod, a sliding groove is arranged on the surface of the screw rod, and a circular ring base plate is sleeved on the surface of the screw rod. And a limiting block is fixedly connected to the inner arc surface of the circular ring base plate, the limiting block is clamped in the sliding groove, an inserting groove is formed in the surface of the circular ring base plate, and a locking mechanism is fixedly connected to the surface of the nut. The bolt and the nut can be fixed through matching of the circular ring base plate and the locking mechanism on the nut, so that connection between the bolt and the nut is firmer, the problem of bolt loosening caused by various complex working conditions such as vibration, high and low load changes and strong wind impact in the operation process of the wind driven generator can be effectively solved, and the service life of the wind driven generator is prolonged. The reliability of bolt connection is greatly improved, and stable connection of all parts of the wind driven generator is ensured.

A single-head anti-loosening fastening device comprises a bolt and a bolt clamping screw. The non-overlapping part of the bolt head and the bolt body in the axial direction is provided with two or more through bolt clamping screw holes parallel to the axial direction, and the bolt clamping screw holes are used for being connected with bolt clamping screws in a threaded fit mode; the diameter of the bolt clamping tail of the bolt clamping screw shrinks towards the tail end, and the bolt clamping screw is used for being embedded into a locking groove of a contacted fastening object. On the premise that the single-head fastening device is convenient and reliable to install, the requirements of railway industry standards are met and exceeded, the loosening torque is larger than the fastening torque, mucilage glue does not need to be smeared, use is convenient, the single-head fastening device can be put into use immediately after being fastened, and loosening and disassembling are easy, convenient and rapid compared with an existing fastening device.

The utility model discloses a novel anti-loosening bolt, which belongs to the technical field of bolts and comprises a base and a nut, the inner wall of the base is in threaded connection with a bolt body, and the bottom of the bolt body is fixedly connected with a fixing cone. The nut is screwed into the surface of the bolt body from bottom to top from the bottom of the bolt body and located at the bottom of the base and stops moving until the positions of the second through hole and the first through hole are located on the same horizontal plane, meanwhile, in the rotating process, the spring gasket is extruded through the nut, and when the spring gasket is flattened, elastic force can be generated, so that the spring gasket is tightly pressed. And after connection is completed, a plug pin is inserted into the second through hole and the first through hole, physical limiting is conducted on the nut and the bolt body through the plug pin, the stability when the nut and the bolt body are connected is improved again, and the nut and the bolt body can be prevented from being loosened. Therefore, the anti-loosening purpose is achieved.

The utility model discloses a fastener structure with a reverse self-locking function, and relates to the technical field of fasteners. The device comprises a fixing column, a mounting hole is formed in the bottom end of the fixing column, a screw is rotationally connected into the mounting hole, the top end of the screw penetrates through the fixing column, a threaded ring is in threaded connection with the outer surface of the screw, the threaded ring is movably connected with the mounting hole, a guide groove is formed in the inner wall of the mounting hole, and a guide block is movably connected into the guide groove. One end of the guide block is fixedly connected with the threaded ring, the other end of the guide block is fixedly connected with a pressing ring, and the top end of the fixing column is fixedly connected with a mounting shell. When the screw rod is rotated, the pawl can be meshed with the ratchet wheel under the assistance of the torsion spring and the rotating shaft, so that the screw rod can only move towards one direction, and the distance between the compression ring and the mounting shell cannot be increased when mechanical equipment is fastened; therefore, the mechanical equipment which is fastened together cannot be loosened.

A lock tab washer for a pipe hanger includes a washer body; an edge tab defining a first section and a second section, wherein the first section extends from the washer body and the second section is bent relative to the first section in a first direction; and first, second, and third nut tabs extending from the washer body, wherein each of the first, second, and third nut tabs are bent relative to the washer body in a second direction opposite the first direction.

A torque control fastener system having a fastener nut, a helical wire insert, and a shaft, where the nut and helical wire insert have unique hardness and coefficient of thermal expansion relationships that produce improved performance.

The utility model discloses a locknut which comprises an inner nut and an outer nut, the inner wall of the inner nut is a through hole and is provided with a first thread, the inner nut comprises an upper half part and a lower half part, the outer side of the upper half part is provided with a first external thread, and the inner side of the outer nut is provided with a second internal thread matched with the first external thread. The outer nut body can rotate upwards along the first external threads, the outer diameter of the upper half portion is gradually increased from bottom to top, and a plurality of notches are formed in the upper half portion of the inner nut body and evenly distributed at the upper end of the upper half portion of the inner nut body around the axis of the inner nut body.

A nut adapted to disengage with a threaded bolt, the nut comprising a base portion integrally formed to a top portion. The nut includes a bore positioned along a central axis through the base portion and the top portion, wherein the top portion is tapered between circumference of the base portion and the bore of the top portion. The tapering is at an angle between 0° to 45° relative to the diameter of the base portion; the base portion comprises at least two cavities, wherein the at least two cavities extend vertically into the base portion.

The utility model provides a fast-assembly nut which comprises a handheld seat, a locking block and a pressing seat. And a mounting step surrounding the inner pipe is arranged at the head part of the whole handheld seat. And the locking block is arc-shaped and is movably mounted on the mounting step of the handheld seat in a surrounding manner. The pressing base is annular and movably installed at the end of the head of the handheld base, and a pushing structure and an elastic reset structure are arranged between the pressing base and the locking block. During installation, the pressing base abuts against the bottom of the table top, the pushing structure drives the locking block to move towards the middle of the handheld base, and the elastic reset structure is also driven to deform. And during disassembly, the pressing seat is separated from the bottom of the table top and is released, and the pressing seat drives the locking block to reset through the recovery of the elastic reset structure. The elastic reset structure of the quick-mounting nut is arranged on the locking block and the pressing seat, avoids the handheld seat, and is transferred to the locking block and the pressing seat from the interior of the mounting step to form an exposed state, so that the quick-mounting nut is easy to form.

The invention discloses an anti-loose structure nut and a using method thereof, and the anti-loose structure nut is composed of an upper nut and a lower nut; one end of the upper nut is of a conical surface structure, and the inclined angle of the conical surface structure relative to the central axis of the upper nut is 16 degrees; a groove is formed in the conical surface structure; the upper portion of the lower nut is an inner taper hole, the lower portion of the lower nut is a straight hole, and the included angle between inclined generatrixes on the two sides of the inner wall of the inner taper hole is 16 degrees. The diameter of the inner taper hole is smaller than that of the conical surface structure. The using method comprises the following steps that (1) the lower nut is screwed into the bolt penetrating into the interlayer; and (2) screwing the upper nut into the inner taper hole of the lower nut by adopting a hexagonal wrench. The device is simple in structure and easy to process and manufacture; common carbon steel or stainless steel materials are adopted, so that the manufacturing cost is low; the locking torque is large and stable, and the anti-loosening performance is excellent; during installation, the locking torque can be adjusted according to actual requirements; and the locking torque is stable and reliable, and can be repeatedly disassembled and used.

The utility model relates to an anti-loosing fastener, which comprises a bolt and a nut, the bolt comprises a bolt head and a threaded rod body, the threaded rod body is used for being in threaded fit with the nut, the anti-loosing fastener further comprises an elastic mechanism, the elastic mechanism comprises an elastic sheet, one end of the elastic sheet is fixed on the end face of one side, far away from the bolt head, of the nut, and the other end of the elastic sheet is fixed on the end face of the other side of the nut. The other end of the elastic piece is used for being fixedly connected to the end, away from the bolt head, of the threaded rod body after the nut is in threaded fit with the threaded rod body, and the elastic mechanism is arranged, so that the nut bears continuous thrust from the elastic piece after being screwed and always moves towards the bolt head. By means of the structure, stable pre-tightening force can be formed at the threaded connection position, the phenomenon that the nut rotates and loosens due to vibration, impact and other factors is effectively prevented, and therefore the connection reliability and long-term stability are remarkably improved.