413results about "Load modified fasteners" patented technology

The present invention belongs to the field of tightening control methods and automatic tightening technology, and discloses a tightening control method and automatic tightening device for an aero-engine rotor based on bolt preload feedback. The automatic tightening device is based on a main body structure and is provided with a rotary table structure, a spherical guide structure and a skid platform structure to achieve the degree of freedom of movement of the automatic tightening device for an aero-engine rotor within an inner cavity space of the rotor, enabling the tightening structure to be fed and withdrawn; in addition, a preload detection structure is provided, which relies on an ultrasonic preload measurement system to measure a real-time preload of a bolt during a tightening process and transmit the value of the preload to a tightening gun to achieve a tightening method for preload feedback control.

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.

There is provided a sensor unit for a fastener assembly, the sensor unit comprising a mounting arranged to rigidly attach the sensor unit to, or adjacent to, a fastener assembly; and a sensor, that is an optical flow sensor or an inductive sensor, configured to sense movement of the fastener assembly. The sensor unit may comprise a processor arranged to process the output of the sensor to detect loosening of the fastener assembly and to output a signal representing the status of the fastener assembly. The sensor unit may comprise a wireless communication unit arranged to communicate the signal.

A fixing bolt (103) for fixing a stranded conductor wire (401a, 401b) has a tapered section (215) extending along a central axis direction (207) of the fixing bolt (103). The tapered section (215) establishes an electrical contact with the stranded conductor wire (401a, 401b). A first portion (305) of the tapered section (215) is an arched cone frustum that is arched with respect to the central axis direction (207).

Provided is a housing comprising, a plastic assembly comprising a plastic “B” cover having one or more snap on plastic hooks protruding therefrom and one or more grooves cut therein, a display panel sandwiched into the plastic assembly behind the plastic “B” cover, in front of an electromagnetic interference shielding (EMI) material, and a plastic “A” cover having one or more grooves cut therein, the plastic assembly held together by one or more clips sliding along each side of the plastic assembly, and within the one or more grooves of the plastic “B” cover and one or more snap on plastic hooks and the one or more grooves of the plastic “A” cover, the EMI material has one or more press-on grommets which are pressed onto one or more plastic buttons protruding from a surface of the plastic “A” cover to secure the EMI material to the plastic “A” cover.

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 attraction system includes a first component, a second component, a fixture configured to couple the first component to the second component, a radio frequency identification (RFID) tag including a torque stripe extending between the fixture and a reference point on the attraction system, and the RFID tag configured to emit a radio frequency (RF) signal when the torque stripe is intact, and an RFID reader configured to detect the RF signal.

Instrumented nut, clamping sleeve, clamping device and method for tightening such a nut. The invention relates to an instrumented metal nut (10b) comprising a tubular body having a polygonal drive surface (14). The nut comprises, on at least one annular portion (34) of its outer surface: an electrically insulating layer (36) applied to the annular portion; a piezoresistive conductive polymer (38) whose ohmic resistance varies according to a stress exerted during tightening of the nut on a threaded fastener, said conductive polymer being applied to the electrically insulating layer; and at least two electrodes (40). Figure for the abstract: Figure 2

More easily detect loosening of the screw. 【Solution means】 In the fastening component, among the plurality of leaf spring portions of the washer, the leaf spring portion that is in contact with the portion of the back surface of the screw where there is no depression is pushed downward in the direction of pointing to the substrate by the back surface of the screw, and is electrically connected to any one of the plurality of conductive patterns. When one or more of the plurality of leaf spring portions are electrically connected to the plurality of conductive patterns, the plurality of conductive patterns are electrically connected to each other via one or more leaf spring portions.

The utility model discloses a large-span torsional shear type bolt assembly which comprises a torsional shear bolt, one end of the torsional shear bolt is movably connected with a wabbler, the side wall of the torsional shear bolt is movably connected with a gasket, one side of the gasket is fixedly connected with a preservative storage bag, and the torsional shear bolt is in threaded connection with a torsional shear nut. And one side of the torsional shear nut is fixedly connected with a crushing rod, and one side of the torsional shear nut is movably connected with one side of a preservative storage bag. The utility model relates to the technical field of torsional shear type bolts. Through cooperation of a torsional shear bolt, a gasket, a magnet ring, a sealing steel ring, a preservative storage bag, a torsional shear nut and a crushing rod, the space between the gasket and the torsional shear nut can be automatically coated with a rust remover when equipment is installed and fixed through the torsional shear bolt, workers do not need to manually coat the equipment with the rust remover, and the labor intensity of the workers is reduced; and meanwhile, the rust remover can be limited, the rust remover is prevented from splashing all around, and rainwater can be prevented from being directly poured on the side wall of the twist arrow nut.

A break-off bolt for securing a conductor within a connector includes a first thread section, a second thread section and a torque-limiting section arranged between the first thread section and the second thread section. The first thread section and the second thread section comprise the same external thread having a minor diameter. The torque-limiting section has at least one of no thread with an outer diameter larger than the minor diameter of the external thread or an external thread having a minor diameter larger than the minor diameter of the external thread of the first and second thread sections.

The disclosure relates to a method for producing load-indicating connection components. A connection element (10) and a piezoelectric ultrasonic transducer (20) are provided and interconnected. The method comprises forming a layer structure on the surface (14) of the connection element (10). The layer structure comprises, in this order, proceeding from the surface (14) of the connection element (10): a first solder layer (16); a reactive layer (30); a second solder layer (22); and the piezoelectric ultrasonic transducer (20). The reactive layer (30) is designed for an exothermic reaction by activation with heat, with electromagnetic radiation or with electric current. Subsequently, the piezoelectric ultrasonic transducer (20) is pressed toward the connection element (10) in order to produce a specified contact pressure, and the reactive layer (30) is activated. The disclosure also relates to a load-indicating connection component of this type.

The present application belongs to the technical field of wind power equipment connecting structure, and particularly relates to a threaded connection assembly, a blade device and a wind power equipment. The threaded connection assembly comprises: an inner threaded connecting piece; and an outer threaded connecting piece, a radially outer side surface of the outer threaded connecting piece is provided with an outer thread, the outer thread is threadedly matched with the inner thread, in the axial tensile stress direction of the outer threaded connecting piece, the outer thread and the inner thread form a plurality of threaded areas, and an axial gap exists between the front side surface of the outer thread of the outer thread and the rear side surface of the inner thread of the inner thread adjacent to the front. Wherein, in the axial tensile stress direction, the axial gap in the threaded area in the front is greater than the axial gap in the threaded area in the rear. Through the technical scheme of the present application, different axial gaps are arranged between the threads in different threaded areas, so as to change the stress distribution according to the axial tensile stress change, so that the overall stress distribution is more uniform, which is beneficial to prolong the service life and reduce the maintenance cost.

The invention relates to an assembly screw comprising at least a threaded part (12A) and a non-threaded part (12C), the non-threaded part being provided with a strain gauge (22) that is sensitive to the instantaneous elongation of the non-threaded part and with an RFID tag (24) connected to the strain gauge by a wired link, the assembly allowing the wireless transmission of an electrical resistance value of the strain gauge representative of the instantaneous elongation.

Adjustment device (1) for adjusting a light module in a lighting device, comprising an adjustment means (10) into which a rotary movement can be introduced, and a transmission element (11) by means of which the rotary movement can be transmitted, and wherein the adjustment means (10) and the transmission element (11) are connected by means of a coupling (12) for torque overload protection, wherein the adjustment means (10) is formed in at least two parts and has a first part (10a) into which the rotary movement can be introduced and a second part (10b) which is formed as part of the coupling (12), wherein the coupling (12) has a metallic spring element (13) which is formed by means of the second part (10b) of the adjustment means (10) and which comprises several spring arms (14) which at least partially enclose on the outside a detent section (16) of the transmission element (11) formed with detent cams (15),characterized in that the spring arms (14) have detent projections (21) pointing towards the detent cams (15), which are in contact with the detent cams (15).

A fastener 100 includes a sleeve 102, a pin 106, and a visual indicator 112. The sleeve 102 includes a tubular body 104. The pin 106 includes a shank 108. At least a portion of the shank of the pin is configured to extend through the tubular body of the sleeve and to facilitate deformation of a portion of the tubular body into a bulb 110 in response to a force applied to the tubular body of the sleeve by the shank of the pin. The visual indicator is configured to provide a visual verification of correct formation of the bulb.

In one embodiment, a housing is provided that includes a plastic assembly including a plastic "B" cover having one or more snap plastic hooks projecting therefrom and one or more grooves cut therein; a display panel sandwiched in the plastic assembly behind the plastic "B" cover and in front of an electromagnetic interference shielding (EMI) material; and a plastic "A" cover having one or more grooves cut therein, the plastic assembly being held together by one or more clips sliding along each side of the plastic assembly and within the one or more grooves of the plastic "B" cover and within the one or more snap plastic hooks and the one or more grooves of the plastic "A" cover, the EMI material has one or more push grommets that are pressed onto one or more plastic buttons protruding from a surface of the plastic "A" cover to secure the EMI material to the plastic "A" cover.

To provide a doubling plate for frictional joining capable of enabling fastening from one direction by a torque shear wrench and dispensing with a nut.SOLUTION: A doubling plate 11 is used in frictional joining with a bolt while being superposed on a member to be joined 10, by using a bolt which has a shape with a torque shear stud-type fracture groove and a pin tail, and on which a male screw 21 of left-hand thread is formed on one of half parts of the bolt, a male screw 23 of right-hand thread is formed on the pin tail-side half part, and a nut 22 is engaged with the male screw 23 of right-hand thread, as a stud bolt. The doubling plate is disposed below the member to be joined 10, enables fastening from one side by being provided with a female screw 11A of left-hand thread to be engaged with the male screw 21 of left-hand thread of the bolt, and provides a function as a nut of large width across flat.SELECTED DRAWING: Figure 1

A service tube assembly (30) comprises a service tube (32) having a threaded end portion (32b) and a ratchet hub (H) spaced from the threaded end portion (32b). The threaded end portion (32b) of the service tube (32) is threadably engaged with a mating part (34). The assembly further comprises a locking member (36) having a cantilever (36c) extending from a fixed end (36c') held relative to the mating part (34) to a free end (36c"). A ratchet pawl (P) is provided at the free end (36c") for engagement with the ratchet hub (H) on the service tube (32).

The invention belongs to the technical field of nuts, and particularly relates to a twist-off type anti-theft nut which comprises a main body internally provided with internal threads and a wrenching part connected to one side of the main body in the axial direction, a connecting part is arranged between the wrenching part and the main body, a wrenching groove is formed in the connecting part, and the surface of the main body is an arc-shaped surface. The diameter of the section close to one end of the wrenching part is smaller than that of the section far away from one end of the wrenching part; the surface of the main body is arranged to be the arc-shaped surface, and the diameter size of the section of one end close to the wrenching part is smaller than that of the section of one end far away from the wrenching part, namely, the diameter size of the section is large inside and small outside, so that the clamping difficulty of tools such as pipe tongs is increased, the risk of being detached is effectively reduced, and the anti-theft effect is improved.

The invention relates to a device (10) for monitoring the tightening of a fastener (12), said device comprising: a rod (14), comprising a first (22) and a second (26) opposite flat faces; an assembly member (16), capable of being assembled to the rod; and a probe (18) comprising: - a probe body (50), comprising a front face (56), capable of coming into contact with the bottom (26) of the axial imprint of the rod; and - a transducer (52, 80), integral with the probe body, said transducer being capable of sending and / or receiving ultrasonic waves. The rod comprises a first blocking element (29); and the probe comprises a second blocking element (62), capable of cooperating with said first blocking element.

Kit (10) for providing a one-way torque nut (10') for a bolted connection, wherein the torque nut (10') is formed by - a screw part (12) having a threaded section (14), and - a drive part (16, 16') that can be coupled to the screw part (12) to transmit torque, wherein the drive part (16, 16') has an attachment area (22) for a torque-applying tool, wherein the screw part (12) and the drive part (16, 16') each have a configuration (K1, K2, K2') of positive locking elements (26, 28, 28') which are configured to form a positive locking element pairing in the coupled state of screw part (12) and drive part (16, 16') and to transmit the torque applied to the nut (10'), and wherein the kit comprises several screw parts (12) with relatively different configurations (K1) of positive locking elements (26), and / or several drive parts (16, 16') with relatively different configurations (K2, K2') of positive locking elements (28, 28'), wherein the positive locking element pairings that can be formed from the configurations (K1, K2, K2') differ in how much torque can be transmitted until the positive locking element pairing fails.

The cylindrical shaft (110) of a bolt (101) is provided with a central bore (113), extending axially from the head (130) of the bolt (101 ) over at least a part of the axial length of the bolt (101). The bolt is provided with a measuring pin (120) located inside the bore (113) and extending substantially parallel to the shaft (110). The measuring pin (120) has an anchor end (122) fixated with respect to the shaft and has an opposite free indicator end (121 ). The bolt is further provided with a sensor element (140, 141 ) comprising a magnet (141 ) attached to the free indicator end (121 ) of the measuring pin (120) and a magnetic sensor (140) fixated with respect to the shaft (110) and aligned with the first sensor component (141 ).

A rescue hoist including a cable drum assembly (110) generally including a cable drum (102) having a cable groove (104) and a recess (114) positioned at one end of the cable groove, a shear pin (118) extending transverse across the recess, and a cable assembly (110) including a cable (108) routed along the cable groove and a cable hook (116) mounted to one end of the cable. In use, to secure the cable assembly to the cable drum, the cable hook is received in the recess and hooked around the shear pin according to a predefined installation sequence. In use, to provide a cable release provision, the shear pin includes spaced reduced diameter sections (126a, 126b) positioned on opposing lateral sides of the cable hook configured to shear in response to a load on the cable exceeding a predefined threshold load value.

A turboshaft engine transmission with a torque measurement system is provided. The turboshaft engine transmission includes a front housing, a rear housing, a mating flange axially interposed between the front and rear housings, the mating flange defining a sensing bolt hole, assembly bolts disposed to assemble the front and rear housings to the mating flange with a preload sufficient to maintain assembly during engine operational conditions and a sensing bolt installed in the sensing bolt hole to measure forces exerted on the mating flange by the front and rear housings.

Tension control system for a fastener in an assembly and associated control method. The present invention relates to a tension control system (10) for a fastener (12) in an assembly (36), said fastener (12) comprising a rod (14) and an assembly member (16), the control system (10) comprising: - a first measuring device (44), the first measuring device (44) being adapted to measure a first parameter representative of the time response of the rod (14) to an ultrasonic excitation, - a second measuring device (46) adapted to measure a second parameter representative of the frequency response of the rod (14) to an ultrasonic excitation, and - a calculator (48), the calculator (48) being adapted to determine a value for the tension of the rod (14) as a function of at least said first parameter and said second parameter. Figure for the abstract: Figure 1

To provide a fastening member that is relatively easy to manufacture, and does not require use of a dedicated wrench to control a tightening torque.SOLUTION: A fastening member is, for example, a hexagonal nut 1 having a female thread part 10. The nut 1 has a first portion 11 and a second portion 12 located closer to a fastening target material 6 than the first portion 11. The first portion 11 is a portion into which a non-illustrated rotational operating tool (such as an impact wrench and a hexagonal socket set therein) is fitted. The first portion 11 and second portion 12 are connected by a connection part 13 that breaks when the first portion 11 is tightened by rotation of the rotational operating tool with a tightening torque required for the second portion 12.SELECTED DRAWING: Figure 1

To prevent a wheel falling accident due to breakage of a wheel bolt, where for this purpose, it is essential to maintain specified bolt fastening force.SOLUTION: There is provided a structure in which a bolt 5 passing through a hub 1, a brake drum 2, a wheel 3, and a wheel 4 is fastened by a nut 6 through a bolt fastening force detecting seat composed of a disc spring 7 and a ring for detecting its deflection of the disc spring.SELECTED DRAWING: Figure 1