762results about "Dowels" patented technology

Expansion anchor having an anchor bolt having a threaded zone for introducing tensile load into the anchor bolt, and an expansion sleeve surrounding the anchor bolt, wherein the anchor bolt has an expansion body located in a front region of the anchor bolt, wherein the expansion body has a converging zone for expanding the expansion sleeve, wherein the anchor bolt further has a flange that provides an abutment for the expansion sleeve, wherein the flange is arranged between the expansion body and the threaded zone, wherein the anchor bolt further has a neck that is arranged between the expansion body and the flange, and which adjoins both the expansion body and the flange, wherein the expansion sleeve surrounds the neck of the anchor bolt, characterized in that the following holds for the cross-sectional area At of the threaded zone and for the cross-sectional area An of the neck: (At / An) ≤ 1.3.

A fastener to connect a first component to a second component with an opening. The fastener includes a head with two lock tabs, each shaped with a sloped sidewall, and a lead-in portion that fits into the opening. A shank connects the lead-in portion to a push bar, which has at least one angled (chamfered) edge. Flexible legs extend between the head and the lead-in portion and compress as the lead-in portion is inserted. During installation, the chamfered edge of the push bar slides against the sloped sidewall of the lock tabs, allowing the push bar to move past them. Once in place, the lock tabs hold the push bar, keeping the flexible legs compressed and locking the fastener securely.

A filter arrangement has a first body member with a first axial front surface and a first radial sealing surface, a second body member with a second axial front surface and a second radial sealing surface, a contact portion and an elastic contact element. The first and second body members complementarily couple together with a connecting device. In a coupled state, the contact portion and the elastic contact element are axially compressed between the first and second axial front surface. The second radial sealing surface has a groove housing a first sealing element. When brought into the coupled state, the first radial sealing surface at least partially covers the groove of the second radial sealing surface before the contact portion and elastic contact element are at least partially axially compressed between the first and second axial front surface. When coupled, the first radial sealing surface completely covering the groove.

Wet cladding methods are disclosed which allow for construction and concomitant cladding of back-up walls. The end-cladding elements are attached to the wall using undercut anchors which are inserted into holes on the back surface of the end-cladding elements.

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.

Herein is described a fixing of unitary construction for securing an article to a surface, comprising; a coupling arrangement (104), for coupling the article to the fixing, wherein the fixing comprises barbs (114) which increase the friction between the fixing and the hole; and an elongate member (106) extending from the coupling arrangement; the elongate member comprising a bend (108) which is located substantially midway along the length of the elongate member, the bend defining a first portion (110) and second portion (112) of the elongate member; wherein the first and second portions are resiliently biased away from each other, and the first portion extends between the coupling arrangement and the bend, and the second portion extends towards the coupling arrangement from the bend, forming a gap suitable for the article, between the second portion and the coupling arrangement; wherein the gap size is adjusted by varying the distance between the first and second portions of the elongate member.

The invention relates to a composite anchor cartridge (1) comprising (1) a first container (2) with a first interior (3) containing a reactive resin (6) with ethylene unsaturated groups; and (ii) a second container (4) with a second interior (5) containing a particulate hardener (7); wherein the hardener (7) comprises dibenzoyl peroxide phlegmatized with ethylene glycol dibenzoate, and wherein the dibenzoyl peroxide content is less than 50.0 wt.%, preferably at most 49.4 wt.%, based on the total weight of the hardener (7).

A fastener structure includes a rotating fastener body and a main body, the main body and the rotating fastener body are linked with each other by an anti-rotation portion. Through the structural design of the anti-rotation portion, the fastening stability can be greatly improved. Further, each component may also vary the structural configuration. A method of using the fastener structure is also introduced.

A sealing plug for blind hole, one-sided installation includes a stem head having a first end and an opposing second end, where the stem head includes a lip member disposed at the first end and having a first diameter, a skirt member disposed at the second end and have a second diameter that is less than the first diameter, and a first tapered portion disposed between the lip member and the skirt member and having a third diameter, a fourth diameter, and a first sloped portion therebetween. The stem head may also include a second tapered portion between the first tapered portion and the skirt member. The second tapered portion may have a fifth diameter, a sixth diameter, and a second sloped portion therebetween. The stem head may also include a waist member between the second tapered portion and the skirt member, the waist member having a seventh diameter.

A nut retainer assembly for a blind fastener system, includes: a nut retainer aligned along a longitudinal axis, the nut retainer comprising: i) an interior cavity for securely holding a fastener nut therein; ii) an opening for receiving a fastener therethrough; and iii) a threaded retainer coupling portion; and a swageable base or swageable base assembly, the swageable base or swageable base assembly being aligned along the longitudinal axis, the swageable base or swageable base assembly comprising: i) a swageable section; ii) a radial flange extending outwardly from the swageable section; and iii) a threaded base coupling portion for engaging with the threaded retainer coupling portion.

The utility model relates to the technical field of photovoltaic supports, and discloses a flexible support fixing member, a flexible photovoltaic support and a flexible photovoltaic support system, and the flexible support fixing member mainly comprises a hanging ring main body, a first fixing assembly and a second fixing assembly. The hanging ring body is provided with an opening and two opposite end portions, the first fixing assembly comprises a first limiting portion and a first connecting portion, at least part of the first limiting portion is located in the opening, and the first connecting portion is responsible for being connected with a supporting structure. The second fixing assembly is connected with the first limiting part and the two ends of the hanging ring body, the second fixing assembly, the hanging ring body and the first limiting part jointly form a first installation space, the first installation space is used for installing a cable structure, the installation flexibility of the support can be improved, and the stability and the installation efficiency of the photovoltaic support are effectively optimized.

The utility model relates to the technical field of anchor bolts, and particularly discloses a plastic anchor bolt special for maintenance of an outer wall thermal insulation layer, the plastic anchor bolt comprises a metal screw and a plastic expansion sleeve, and a plastic disc is arranged at the top of the plastic expansion sleeve; a cavity for accommodating the metal screw is formed in the plastic expansion sleeve; the upper portion of the plastic expansion sleeve is a sleeve, the lower portion of the plastic expansion sleeve is an anchoring end, a glue injection hole communicated with the cavity is formed in the sleeve, and a glue injection sealing film is arranged between the glue injection hole and the anchoring end. Due to the expansion gap formed in the middle of the anchoring end and the protrusions and the recesses in the outer wall, after the anchor bolt is installed, the anchor bolt can be better meshed with a base material, the anchoring strength is improved, and the anti-drawing performance of the anchor bolt is improved. The glue injection sealing film is arranged between the glue injection hole and the anchoring end, so that glue liquid can be prevented from leaking to other places during glue injection, and the glue injection pressure and the glue liquid are ensured to reach required places only through the glue injection hole; and after glue injection, the reinforcing effect of the anchor bolts on the thermal insulation layer is further enhanced.

A trophy assembly comprises a trophy base (38), a connector piece (20), at least one decorative element (12), and a rod (44) for connecting the decorative element to the connector piece. The rod has a first end which is attachable to the decorative element, and a second end provided with a screw-threaded portion for attachment to the connector piece, the second end of the rod has a first radius. The trophy base includes a bore (36) shaped to receive the connector piece, and the bore has an internal wall. The connector piece is formed from a plastics material and comprises a head portion (22) and a body portion (24). It has an elongate socket (26) passing through both the head and body portions, the elongate socket has a second radius which is greater than or equal to the first radius. The body portion of the connector piece has a first end proximal to the head portion and a second end distal to the head portion, and the second end of the body portion comprises at least two parts which are resilient when subjected to a force substantially perpendicular to a longitudinal axis of the elongate socket. The body portion has an internal surface defining the elongate socket and the internal surface is provided with at least two elongate protrusions (34) oriented substantially parallel to the longitudinal axis of the elongate socket. The elongate protrusions define an inner channel with a third radius, and the third radius is smaller than the first radius. The body portion has an external surface provided with a plurality of ridges, and the connector piece is connectable to the trophy base by pushing the connector piece into the bore such that the parts of the body portion are pushed together and such that the ridges are in contact with the internal wall of the bore. The decorative element is connectable to the base by screwing the second end of the rod into the socket of the connector piece such that the screw-threaded portion of the rod engages with the elongate protrusions within the socket.

The utility model discloses a locking mechanism, a stamping storage battery bolt, a storage battery and a motor vehicle. The locking mechanism comprises a connecting piece and a locking hole formed in the connecting piece, a first clamping arm and a second clamping arm are arranged, and an abutting piece is installed between a bolt and the first clamping arm and between the bolt and the second clamping arm; an elastic piece used for keeping the separation trend of the bolt and the abutting piece is arranged between the head of the bolt and the abutting piece. The bolt sequentially penetrates through the elastic piece, the second channel and the first channel and is matched with the nut to be installed on the first clamping arm and the second clamping arm. The technical scheme has the advantages that the elastic piece is arranged between the head of the bolt and the abutting piece, the bolt and the abutting piece are normally separated by providing elastic force, so that rotation of the nut in a natural state cannot drive the locking mechanism to act, misoperation is prevented, and the locking mechanism can be locked only after the elastic force is overcome to enable the bolt to abut against the abutting piece. Locking can be effectively driven through rotation of the nut, and therefore reliable separation of a safe state and a working state is achieved.

To provide a come-off prevention tool for a one-side bolt that eliminates the need of processing of a material to be fastened and has excellent versatility.SOLUTION: A come-off prevention tool for a one-side bolt includes: a sleeve attachment member to be attached to a sleeve head; and a bolt attachment member to be attached to a bolt head. The sleeve attachment member includes: a top plate part facing a top surface of a sleeve head; a side plate part extending along a side surface of the sleeve head from the top plate part and regulating relative rotation between a sleeve and the sleeve attachment member relative to a central axis of a bolt; and a projection piece extending in a direction different from the extension direction of the side plate part from the top plate part. The bolt attachment member includes: a fitting hole fitted to the bolt head and regulating relative rotation between the bolt and the bolt attachment member relative to the central axis; and an insertion hole through which the projection piece of the sleeve attachment member is inserted.SELECTED DRAWING: Figure 5

The utility model relates to the field of automobile welding equipment, and discloses a one-piece automobile welding bolt which comprises a one-piece strip, a positioning assembly is arranged in the one-piece strip and comprises a positioning strip, a position adjusting groove is formed in the bottom of the front surface of the one-piece strip, a limiting column is fixedly connected to the axis of the left surface of the inner wall of the position adjusting groove, and the left surface of the inner wall of the limiting column is provided with a positioning groove. A sliding groove is formed in the upper surface of the connecting strip, a sliding block is slidably connected into a groove in the inner wall of the sliding groove, a positioning column is fixedly connected to the upper surface of the sliding block, and an auxiliary assembly is arranged on the upper surface of the sliding block. According to the utility model, through the mutual cooperation of the connection relationship among the connecting strips, the positioning columns, the positioning strips and other parts in the positioning assembly, the distance adjustment among the connected parts is realized, the reinforced positioning of the connected parts by the connecting strips is realized, the installation range of the connected parts is enlarged, and the installation efficiency of the connected parts is improved. And the installation effect of the equipment on the integrated part is enhanced.

The invention relates to an insulation anchor (1) for attaching a component to an insulation system. The insulation anchor (1) comprises a base body (6) with a screw channel (7) and, at the rear end of the base body (6), a flange (9) projecting radially outwards beyond the base body (6) in relation to a longitudinal axis (8) of the insulation anchor (1). A screw can be screwed into the insulation anchor (1) via the screw channel (7), thereby attaching the component to the insulation anchor (1). Furthermore, at least one recess (13) is provided in the flange (9), which locally reduces the thickness (12) of the flange (9) measured in the direction of the longitudinal axis (8). The flange recess (13) has a diameter (14) that is smaller than the diameter (15) of the screw channel (7), so that a screw can be screwed into the flange recess (13) when the screw channel (7) is not in the area of ​​a mounting opening of the attachment.

The invention relates to a dowel (1) for anchoring in aerated concrete, which has a sleeve-like hollow shaft (2) extending longitudinally along a longitudinal axis (5) from a rear end (3) to a front end (4). The hollow shaft (2) has a longitudinally extending screw channel (6) into which a screw can be screwed from the rear end (3) to fasten an attachment to the dowel (1). According to the invention, a distance (14) measured in the direction of the longitudinal axis (5) from a rear end (3) of the hollow shaft (2) to a rear end (13) of a slot (10) that weakens the hollow shaft (2) is less than or equal to the distance (16) measured in the direction of the longitudinal axis (5) from the rear end (3) of the hollow shaft (2) to a rear end (15) of an external thread (7) arranged on the hollow shaft (2).

The application discloses a single-purpose wall anchor bolt, which comprises a hollow tubular body and a plurality of root strips, the root strips are strip-shaped, the front end of the hollow tubular body is connected with the rear end of the root strips, the root strips are arranged along the circumference of the front end of the hollow tubular body, and the rear end of the hollow tubular body is provided with external threads and / or internal threads. The single-purpose wall anchor bolt can realize the suspension function through the external threads or the internal threads provided at the rear end of the hollow tubular body, is suitable for the installation of wall hanging parts, and has the advantages of simple structure and firmness. In addition, the single-purpose wall anchor bolt can realize the guiding expansion function through the inclined front end surface of the root strips, and has the advantages of low cost and convenient installation. The application also discloses a mounting method of the single-purpose wall anchor bolt.

This utility model relates to the field of building auxiliary materials, and in particular to an anchor bolt for fixing the thermal insulation layer of existing building exterior walls. It includes an anchor plate, an anchor bolt sleeve, a mixing body, an auxiliary nail core, and a sleeve head. The anchor bolt sleeve is provided with multiple barbs. The sleeve head includes a solvent chamber and a spraying part coaxially connected. The solvent chamber contains two cavities separated by multiple PVE elastic films, each containing an epoxy resin base and an epoxy resin curing agent. The auxiliary nail core drives the mixing body to rotate, ensuring thorough mixing of the epoxy resin base and curing agent. The mixed epoxy resin flows out through the spraying part, filling the gap between the anchor bolt and the wall. After the epoxy resin cures, the anchor bolt and the wall become integrated, achieving the effect of fixing the thermal insulation board.

A sock anchor installation system (10) and method of installation, where the sock anchor installation system includes an elongate tension member (14), a textile sleeve (12) arranged to envelop the elongate tension member; and an elongate hollow tube (32) attachable to one end (34) of an injection mechanism, which is configured to be filled with and to eject cementitious material into a preformed cavity (16). The textile sleeve (12) is configured to be received over the elongate hollow tube (32) and the elongate tension member (14) is configured to be inserted into the elongate hollow tube (32) for installation into the cavity (16). The method involves installing the elongate tension member (14), the textile sleeve (12) and the elongate hollow tube (32) as a unit into the preformed cavity (16). Cpon injection of cementitious material into the cavity (16) the elongate tension member (14) and the textile sleeve (12) are simultaneously released from the hollow tube (32) into the preformed cavity (16).

A blind hole mount fastener (100) configured to retain an object (190) to a support structure (192) defining a bore (194). The fastener (100) includes a stud portion (112) configured to be received within the bore (194), a head portion (110) configured to limit an insertion of the stud portion (112) into the bore (194), and a clip member (150). The stud portion (112) includes a proximal end (114) and a distal end (116), with a longitudinal axis (L) defined therebetween. The stud portion (112) extends in a first direction from the proximal end (114) to the distal end (116). The clip member (150) attached to the stud portion (112) orthogonally to the first direction. The head portion (110) attaches to the stud portion (112) proximal end (114). The stud portion (112) includes a receiver (126) to which the clip member (150) attaches. The clip member (150) configured to be received within the bore (194) with the stud portion (112). The clip member (150) defines an arcuate portion (248) and at least one spring arm portion (180,182) extending from the clip member (150).

The utility model belongs to the technical field of expansion studs, and particularly relates to a welding type cylindrical head stud which comprises a screw, a nut is rotationally connected to the circumferential face of the screw, a gasket is rotationally connected to the circumferential face of the screw, and an expansion device is arranged on the outer surface of the screw. The expansion device comprises a round pipe, the round pipe is arranged on the outer circumferential face of the screw, a sliding groove is formed in the inner wall of the round pipe, and the inner wall of the sliding groove is fixedly connected with one end of a spring. Through the arrangement of the expansion device, the connecting plate is opened to complete expansion of the bolt, the stud is applied to wider fields, the bolt can be conveniently fixed to a wall through the application of the conical column, meanwhile, the use performance of the stud is improved, subsequent use of the stud is facilitated, and the stud is convenient to use. The problems that a connecting plate cannot be opened to complete expansion of a screw, so that the screw cannot be fixed in an internal hole of a wall, and the screw is prone to loosening are solved.

This invention provides a replaceable anchor bolt structure without a bottom nut, relating to the field of building construction technology. It addresses the technical problem that current anchor bolts are fixed at the bottom with nuts, making removal and replacement difficult after concrete pouring. Furthermore, it poses a significant risk of property damage due to the inability to disassemble and install new anchor bolts. The device includes an upper anchor plate and a lower anchor plate located below it. Multiple anchor bolts are connected to the upper and lower anchor plates. Each anchor bolt includes a main body and a first connecting section and a second connecting section located at both ends of the main body. A protective structure is provided around the outer periphery of the main body. The first connecting section extends from the upper anchor plate and is fixed by fasteners. The lower anchor plate has a receiving structure, within which a connecting structure is located. The second connecting section is located within the receiving structure and detachably connected to the connecting structure. This invention improves upon the difficulty of anchor bolt removal and replacement.

The invention relates to a system for fastening rails (S) on a substrate (2) and to an assembly (1) built on such a system. The system comprises a slab element (3) having through openings (21, 22) leading from its upper face (14) to its bottom face (20) and comprising anchoring elements (4, 5) having anchoring element bodies (27) which, in use, are inserted into the substrate (2) and having an insertion opening defined by an end section (28) of the anchoring element body (27) for introducing a fastening element (11, 12) into the anchoring element body (27). According to the invention, a retaining section (29) laterally protruding from the end section (28) is connected to the end section (28) of the anchoring element body (27) by a connecting section (30-33) provided with a predetermined breaking point. On the bottom face (20) of the slab element (3), a retaining portion (38, 39) is provided into which the through openings (21, 22) of the slab element (3) open and into which the anchoring elements (4, 5) are retained by their retaining sections (29). The retaining portion (38, 39) forms a stop (48) for the retaining sections (29) acting in the longitudinal direction of the anchoring elements (4, 5). The inner contour of the through openings (21, 22) of the slab element (3) here adapts to the outer contour of the anchoring element bodies (27) in such a way that, after breaking of the connecting sections (30-33) of the anchoring elements (4, 5), the anchoring element bodies (27) can be moved through the through openings (21, 22) of the slab element (3).

The invention relates to the technical field of bolt pin stress detection, in particular to a novel bolt pin connection structure and a load state detection method thereof. Comprising a cap opening, an expansion pin and a threaded locking pin rod, the expansion pin is an axial hollow cylinder, the front end of the expansion pin is axially divided into eight elastic locking plates which are uniformly distributed in the circumferential direction, radial telescopic grooves are formed in the roots of four of the locking plates so that the locking plates can be elastically opened in the radial direction, and the front end of a rod body of the threaded locking pin rod is a conical propelling end head. The threaded clamping lock pin rod is coaxially inserted into an inner cavity of the expansion pin, the conical pushing end of the threaded clamping lock pin rod extrudes the inner wall of the lock piece through rotation, the lock piece is forced to be opened in the radial direction, a conical locking face is arranged on the inner wall of the cap opening, and after the expansion pin is inserted into the cap opening, the opened outer surface of the lock piece is tightly connected with the conical condensation face of the cap opening in a pressed mode. A resistance strain gauge is arranged in the axial center area of the inner cavity of the expansion pin. According to the invention, the strain change of the bolt can be monitored in real time, so that whether the bolt is loosened or not can be accurately judged.