631 results about "Dowel" patented technology

Disclosed in the present invention are a prefabricated composite floor slab and steel bar truss floor deck directly utilizing old slabs, and a method. The prefabricated composite floor slab comprises new concrete, old concrete slabs, a slab bottom reinforcing mesh, a slab surface reinforcing mesh, steel bar trusses, steel dowel bars, and post-cast concrete. The steel bar truss floor deck comprises new concrete, old concrete slabs, a steel base plate, a slab surface reinforcing mesh, steel bar trusses, steel dowel bars, and support steel bars. According to the present invention, the old concrete slabs are directly utilized instead of being crushed into recycled blocks or recycled aggregates for reuse, thereby greatly simplifying processing procedures, significantly increasing the recycling rate of old concrete, and significantly reducing the usage amounts of new concrete and corresponding cement, thus achieving a significant carbon emission reduction effect; through holes are vertically drilled in the old concrete slabs, the steel dowel bars are inserted into the through holes, gaps between the steel dowel bars and the through holes are then filled with a high-strength grouting material, and shear resistance members are arranged on the side edges of the old concrete slats to enhance the shear resistance at the interface between the new concrete and the old concrete.

An adjustable bidet washing apparatus includes two or more adjustable disk hinge fasteners configured for adjustably securing the apparatus, wherein the adjustable disk hinge fasteners each include a disk having two or more openings along its perimeter, and a securing slot for securing the apparatus to a toilet bowl, and a bracket holder having two bracket holder arms, wherein each bracket holder arm includes a pin or a dowel configured to engage one of the two or more openings along the perimeter of the disk; or a bracket holder having two bracket holder arms, wherein each bracket holder arm includes an opening; and a disk having at least two pins or dowels along its perimeter, each configured to engage one of the one or more openings on the two bracket holder arms, and a securing slot for securing the apparatus.

The invention discloses an actuating mechanism and a surgical instrument, and relates to the field of medical instruments. The actuating mechanism comprises a transmission assembly, and the transmission assembly comprises an actuating piece, a dowel bar, a locking arm, an unlocking piece and a locking elastic piece. During specific operation, a user drives the dowel bar to move by adjusting the rotation stroke of the actuating piece, so that the dowel bar can pull an external dowel wire to execute expected operation, and the actuating piece is automatically locked by the locking arm; a user acts on the locking arm to move away from the actuating piece through the abutting action of the unlocking piece so as to unlock the actuating piece, the locking elastic piece is compressed, then the rotating stroke of the actuating piece is adjusted, and therefore the dowel bar is driven to move. According to the actuating mechanism provided by the invention, the transmission assembly is at least partially arranged on the far-end area in the assembly cavity, so that the occupation of excessive space of an interventional instrument can be avoided, the flexibility of operating the instrument can be improved, and a user can be promoted to adapt to surgical operation at an extreme angle.

A deep engineering hard rock true triaxial dynamic disturbance aging fracture testing device belongs to the technical field of rock mechanics tests and comprises a counter-force frame, a pressure chamber and six main stress linear disturbance actuators. The main stress linear disturbance actuator comprises a linear disturbance motor and a main stress hydraulic cylinder; the linear disturbance motor is coaxially and fixedly installed at the outer end of a cylinder barrel of the main stress hydraulic cylinder, a dowel bar is arranged in a central hole channel of a piston rod of the main stress hydraulic cylinder, and a power output shaft of the linear disturbance motor is coaxially and fixedly connected with the dowel bar. According to the utility model, the matching form of a traditional dynamic actuator and a hydraulic oil source is abandoned, the linear motor is introduced into the true triaxial test equipment as a power disturbance source, the long-time dynamic disturbance structure of the true triaxial test equipment is simplified, and the energy consumption of the equipment is greatly reduced after the linear motor is used as the power disturbance source; the maintenance process is simpler, the maintenance cost is greatly reduced, the installation and debugging processes of the linear motor are more time-saving and labor-saving, and no extra floor area is needed.

A system for building a play area can include two or more panels, each of the two or more panels including a connector and at least one magnet positioned in the connector such that the at least one magnet is able to rotate, the at least one magnet including first and second magnets housed in respective first and second ends of the connector, the at least one magnet including at least one cylindrical magnet, the at least one cylindrical magnet being diametrically magnetized; and first and second dowels connected by the connector; each of the two or more panels being configured such that when at least one edge of each of the first and second panels are brought towards each other from any direction, the at least one magnet in each panel orientates such that a magnetic connection is formed between the two or more panels.

A concrete dowel placement system and methods for making the same. The system allows for accurate and easy substantially-parallel or parallel placement of slip dowels within sections of concrete so that adjacent sections of concrete may be allowed to undergo thermal expansion and contraction while remaining in a common plane without cracking or faulting. The system includes a coupler and a sheath. The sheath is configured to be slidably extensible over the coupler and may be held to the coupler by friction. An outer surface of the sheath may be textured. Additionally, a method of constructing the concrete dowel placement system includes extruding material to form two tubes of different sizes. The tubes are then attached to each other, then material is extruded or injection molded to form a sheath. Alternatively, construction may include extruding material to form a tube, then removing some of the material from the tube in order to form a coupler.

The invention discloses a device and a method for efficiently and precisely welding end covers on a mass flow meter of an aero-engine, and relates to the technical field of welding one end cover on a liquid outlet pipe and a liquid inlet pipe of the mass flow meter respectively. The workbench is further provided with a loading mechanism which is located on the left side of the turnover mechanism and used for automatically and continuously loading the end covers to the mass flow meters, and the loading mechanism is provided with a welding mechanism. Horizontal oil cylinders are fixedly arranged on the left end face and the right end face of the supporting seat, dowel bars are fixedly arranged on the inner end faces of the two connecting plates, pressing plates which are inclined outwards are rotationally installed on the left end face and the right end face of the supporting seat through pin shafts, and the outer end faces of the pressing plates abut against the dowel bars under the elastic action of springs. The welding device has the beneficial effects that the welding efficiency of the mass flow meter and the two end covers is greatly improved, and the welding quality of the mass flow meter and the two end covers is greatly improved.

A system, e.g., for connecting a tie bar or other suspension member to a magnetic device in a magnetic track brake device, includes a bolt, a washer, and a taper dowel. The bolt includes a shaft having a first end and a second end, and a head attached to the first end. The washer is configured to fit about the shaft. The taper dowel is configured to fit about the shaft. The second end of the bolt shaft is configured to fit into a first aperture in the magnetic device, and the taper dowel, disposed about the shaft, is configured to fit within a second aperture in the suspension member. The second aperture corresponds in shape to an outer peripheral surface of the taper dowel, for the bolt to connect the suspension member with the magnetic device.

The gasoline engine generator fuel tank shell stamping die comprises a die body, a base, supporting columns, a hydraulic cylinder, a mistake-proofing structure and a waste collecting structure, the supporting columns are fixedly connected to the four corners of the bottom end of the base, a lower die is installed at the upper end of the base, a discharging port is formed in the middle of the interior of the lower die, and the hydraulic cylinder is fixedly connected with the lower die. A positioning pin is arranged on the upper surface of the lower mold, a heat conduction plate is arranged between the lower mold and the base, a refrigeration sheet is arranged at the bottom end of the heat conduction plate, the upper mold is arranged above the base, a cooling structure is arranged at the rear end of the lower mold, and the mistake-proof structure is arranged at the inner end of the lower mold. And the waste collecting structure is arranged at the bottom end of the base. By means of the structure, the problems that damageable parts of an existing stamping die are tedious to replace, waste is difficult to clean, and cooling efficiency is low can be solved, production efficiency is improved, the rejection rate is reduced, and the working environment is improved.

The utility model relates to a test device for testing a relationship between fractured rock mass damage and permeability change. A bidirectional loading unit comprises a sample underframe, a long-end fixing plate, a wide-end fixing plate, a lateral pressure transmission mechanism and a manual turbine loading device, the sample underframe is of an I-shaped structure; the two long-end fixing plates are oppositely fixed on the outer sides of the two ends of the sample underframe in the length direction; the two wide-end fixing plates are oppositely fixed on the front side and the rear side of the web plate on the sample underframe; the two lateral pressure transmission mechanisms are oppositely distributed left and right; the lateral pressure transmission mechanism comprises a lateral pressure plate, a main guide rod, a pressure bearing end and an auxiliary guide rod; the manual turbine loading device comprises two lateral counter-force plates, two lateral counter-force reinforcing rods, two manual turbine speed reducers, two flexible pressurizing plates and two pressure sensors; the vertical loading unit comprises an upper pressing plate, a dowel bar and a variable cross-section connector; and the permeation unit comprises two glass plates. The device can be used for testing the deformation, fracture, strength and permeation characteristics of the fractured rock mass sample under different confining pressures.

An electro-mechanical actuator for a valve can have a collar configured to envelope a portion of a commercially available liquid coupler. The collar can engage a region of the liquid coupler and a bias member can urge the collar to displace a movable member of the liquid coupler and thereby to break a coupling. A dowel can retain the collar against the force applied by the bias member and a tension member can, under threshold tension, retract the dowel, releasing the collar to move under influence of the bias member. Other valves have a gate element coupled with an armature to rotate the gate element under an electromagnetic field. The gate element can define a recess and a retainer can reside in the recess. As the gate element rotates, the retainer can align with a longitudinal segment of the recess and allow the gate element to displace longitudinally.

A yarn fluffing tool comprising: a dowel, the dowel comprising a first end and a second end; a first loop extending from the first end, the first loop having a generally smooth shape except for a first irregular portion where the first loop terminates at the first end and that first irregular portion has an irregular shape, the first loop is bent in a first direction away from the longitudinal directions of the dowel; a second loop extending from the first end and adjacent to the first loop, the second loop having a generally smooth shape except for a second irregular portion, where the second loop is basically a mirror image shape of the first loop; and where the first irregular portion and the second irregular portion overlap with each other.

The utility model relates to the field of motor quality detection, in particular to a high-speed permanent magnet motor sheath reliability test device, which comprises a platform base, the upper surface of the platform base is fixedly connected with a motor base through bolts, and the upper surface of the motor base is fixedly connected with a dragging motor. A dragging motor is arranged on the upper surface of the platform base, a dragging motor main shaft is arranged in the dragging motor, the surface of the dragging motor main shaft is sleeved with a coupler, the surface of the coupler is fixedly connected with a test main shaft, the upper surface of the platform base is fixedly connected with a to-be-tested device through bolts, and the surface of the to-be-tested device penetrates through and is rotationally connected with the test main shaft. According to the utility model, through the arrangement of the vibration measuring device, when the simulation rotor rotates, the simulation motor operates, the test sheath vibrates, the stress plate is stressed, the vibration condition is transmitted to the vibration sensor through the dowel bar, the vibration sensor feeds back the vibration condition to the control system, and the reliability or potential problems of the sheath are analyzed through data.

The invention discloses a stopping system for an airplane, an energy absorption device and a mechanical property testing method. The stopping system for the airplane comprises an energy absorption system, the energy absorption system comprises an energy absorption assembly, the energy absorption assembly comprises a plurality of energy absorption devices connected end to end, each energy absorption device comprises a sliding block with a pawl, a ratchet groove, a dowel bar and an elastic buffering piece, the dowel bar is connected with the sliding block with the pawl, and the elastic buffering piece is connected with the ratchet groove; the sliding block with the pawl is arranged in the ratchet groove and matched with the ratchet groove to form a moving pair, and the elastic buffering piece is used for being connected with the dowel bar and the ratchet groove. One energy absorption system is used for being installed on one pulley assembly; one end of the arresting cable is connected to the dowel bar of one energy absorption system through the pulley assembly, and the other end of the arresting cable is used for being connected with the dowel bar of the head energy absorption device of the other energy absorption system after passing through the other pulley assembly.

A connector referred to herein as a knife plate, and the structural connections formed using the knife plate. The knife plate may have a first portion configured to affix to a first structural member, such as a vertical column. The knife plate may have a second portion configured to fit within a slot formed in a second structural member, such as a horizontal beam. The second structural member may be pinned to the knife plate using one or more dowels fit through the second structural member and the knife plate.

Disclosed in the present invention is an improved connecting structure for a high-speed wiper arm, comprising a fixing base, a wiper blade, a connector, and a wiper arm. The windward surface of the connector is an inclined surface, and one end of the wiper arm is inserted into the connector and connected to the fixing base. A shaft is provided on a pair of side walls of the fixing base, two side walls of the end of the wiper arm inserted into the connector are respectively provided with a first opening slot, and the first opening slots are hinged to the shaft. The side wall of one side of the fixing base is provided with a second opening slot, and the top of the second opening slot is open. One side wall of the end of the wiper arm inserted into the connector is provided with a dowel pin, and when the wiper arm is assembled with the fixing base, the dowel pin is pressed into the second opening slot from the opening of the second opening slot. The present invention can improve the overall rigidity of the wiper arm while achieving an inclined-surface connector, thereby improving the overall stability of products.

The pump body transfer device of the oil delivery pump comprises a vehicle body, the vehicle body is of a hollow structure, trundles are connected to the bottom of the vehicle body, and a support is connected to the vehicle body. The bracket is connected with a plurality of layers of tracks, and each layer of track is in sliding fit with a laminate; a plurality of caulking grooves are formed in the shelf board, and positioning pins are connected to the shelf board on the side parts of the caulking grooves; the support comprises four stand columns, the four stand columns are connected to the four corners of the upper surface of the top plate, and one end of the support is connected with a second baffle. A plurality of sliding rods are connected to the side of the shelf board and are in sliding fit with the sliding grooves, and a handle is connected to one end of the shelf board. Compared with the prior art, worm blanks are inserted into the material placing holes to be transferred, and after the blanks on the top layer are taken and placed, a button on the switch is pressed down to control the electric push rod to stretch out and the material placing plate to turn upwards, so that the worm blanks on the lower layer are convenient to take and place.

The invention discloses an improved structure of a petroleum underground pitching sliding sleeve, and relates to the technical field of pitching sliding bushs.The improved structure comprises a pipeline, connectors are fixedly connected to the two ends of the pipeline, a plurality of clamping assemblies are arranged on the outer wall of the pipeline, a sliding sleeve is installed in the pipeline, a pitching ball is arranged in the sliding sleeve, and the clamping assemblies comprise pins; one end of the pin penetrates to the inner wall of the pipeline and is sleeved with a positioning block in a threaded mode. An elastic unlocking mechanism is composed of the button, the round pipe and the spring, under the normal working condition, the elastic force of the spring pushes the round pipe to abut against the interior of the pin, threaded connection and locking of the pin and the positioning block are guaranteed, thread loosening is prevented, when the sliding sleeve needs to be detached for overhaul, the button is pressed to compress the spring and drive the round pipe to retract, the locking state of the pin can be quickly relieved, and the service life of the pin is prolonged. The dowel can be drawn out by screwing out the positioning block, and cutting-free quick disassembly of the sliding sleeve is achieved.

A bezel assembly for mounting onto a back of a seat includes a bezel having an outer peripheral portion and an inner recess, and a deployable shelf rotatably mounted to the bezel and configured to rotate between stowed and deployed positions. The rotational attachments are friction hinges including a bracket and a dowel pin receivable in the shelf. One end of the dowel pin defines a plurality of circumferential grooves for seating one or more O-rings for providing a variable frictional interface for constraining rotation of the deployable shelf. In embodiments, the friction hinges eliminate the need for a separate mechanical latch for holding the deployable shelf in a stowed position.

The invention discloses a three-way shock insulation support for outdoor substation strut equipment. The device is characterized in that the rod core is fixedly connected to the check block, two horizontal springs are arranged at the two ends of the rod core, a force transmission sleeve is arranged in the middle of the rod core, and outer sleeves are arranged on the outer sides of the force transmission sleeve and the horizontal springs. A hole is formed in the upper side of the force transmission sleeve and connected with the force transmission rod in a riveted mode, and a horizontal hole is formed over the outer sleeve. The bottom plate is of a locally-hollowed X-shaped structure, the center of the bottom plate is a circular steel plate, the friction ring is installed above the bottom plate, and check blocks are arranged at the four corners of the bottom plate. The bottom face of the sliding unit is fixedly connected with the friction ring, the middle plate and the sliding unit are welded through a sliding unit top plate, the dowel bar penetrates through the sliding unit, eight vertical restraining rods are arranged on the periphery of the middle plate, and the vertical restraining rods are welded to the middle plate through base plates below the vertical restraining rods. Vertical springs are arranged on the outer sides of the vertical restraining rods, and top plates are arranged on the upper portions of the vertical springs. A vertical friction unit is arranged between the top plate and the vertical constraint rod and is composed of two semicircular clamps, the clamps are connected through screws, and friction plates are arranged in the semicircular clamps. The three-way shock insulation support is simple in structure, the total height of the three-way shock insulation support is two layers, the risk of derailment is avoided, and the three-way shock insulation support has good spring in-plane constraint and anti-overturning performance.

The application discloses a positioning pin detection method and device, and relates to the technical field of automatic testing, and comprises the following steps: in response to a target test tool entering a test station, obtaining a to-be-detected image of a region where a positioning pin is located on the target test tool; determining at least one region-of-interest subgraph in the to-be-detected image according to standard coordinate information of the target test tool; and comparing the region-of-interest subgraph with a corresponding standard template image to obtain an existence state detection result of the positioning pin in the region-of-interest subgraph. The application realizes automatic detection without interrupting continuous production, guarantees high detection accuracy and efficiency, avoids a quality detection vacuum period between problem occurrence and the next manual inspection, and further prevents the risk of misjudgment or missed judgment of a large number of products due to inaccurate contact of a test probe, so that the test tool can be detected in a timely and accurate manner without interrupting production.

A retainer for a power take-off assembly includes a flange and a body defining a first end surface, a second end surface, and a first through-hole. The body includes a pilot feature extending at least partially through the body and radially offset from a central axis. A first portion of the pilot feature extends axially outwards from the second end surface. The pilot feature defines a second through-hole. The retainer also includes a dowel coupled with the body and at least partially disposed in the first through-hole. A second portion of the dowel extends axially outwards from the second end surface of the body. The dowel defines a third through-hole that is in alignment with the first through-hole of the body. The retainer allows removable coupling of a flywheel housing of the power take-off assembly with a plurality of gears associated with the power take-off assembly.

The utility model discloses a kind of steel mortise connecting nodes, belong to prefabricated building technical field, including two matching joint connections first embedded part and second embedded part;First embedded part, be configured with first vertical plate and first horizontal plate in inverted T shape connection;Second embedded part, be configured with second vertical plate and second horizontal plate that second vertical plate bottom end is outwardly stretched and fixedly connected in several type notches, several outwardly stretched dowels are provided on the two sides of second vertical plate side surface;First vertical plate matching insertion and fixedly connected in the several type notches of second vertical plate, and first horizontal plate and second horizontal plate are overlap fixedly connected between.Between the steel mortise connecting node provided by the utility model, node structure whole stability is good, compact structure, assembly is convenient and good safety.

The utility model relates to a secondary ejection structure of a plastic mold, and belongs to the technical field of molds. An ejector block is arranged below a lower ejector pin plate, a movable mold core is mounted on a movable mold plate, the top end of an ejector pin sequentially penetrates through an upper ejector pin plate, the movable mold plate and the movable mold core, the top end of a reset rod sequentially penetrates through the upper ejector pin plate and the movable mold plate, and a reset spring is arranged between the upper ejector pin plate and the movable mold plate; the top block is connected with the top end of a connecting rod through a connecting pin, and a fixing base is arranged at the bottom end of the connecting rod. When the mold is opened, the lower ejector plate drives the connecting rod to perform primary ejection, at the moment, the fixed seat is in contact with the movable mold plate, the locking mechanism unlocks the fixed seat, and then the lower ejector plate continuously drives the ejector pin to complete secondary ejection. The utility model aims to solve the problem that the appearance quality of a product is influenced due to deformation of the product caused by overlarge one-time ejection force.

The utility model belongs to the technical field of hydropower stations, and discloses a single-span T-beam sudden change prevention device for a hydropower station, which comprises a pair of outer protective plates, two thickening blocks are arranged on the outer sides of the outer protective plates, split bolts are connected to the thickening blocks through nuts, and an inner supporting rod and an outer supporting rod are connected to the outer sides of the two thickening blocks through bolts respectively. The top ends of the inner supporting rods and the top ends of the outer supporting rods are connected to the bottoms of the side wings of the outer protection plate through bolts, a laser range finder detects that the descending amplitude of the cantilever end of the T-beam is too large, hydraulic rods are started to extend at the moment, then a plurality of hydraulic cylinders on a supporting plate are driven to move upwards, and a supporting plate supports the bottom of the cantilever end of the T-beam; at the moment, the stress of the cantilever end of the T-beam can be transmitted to a dowel bar through a supporting plate to press downwards so as to drive a first piston to move downwards, hydraulic oil in a hydraulic barrel is slowly discharged into a nitrogen barrel through a pipeline to extrude a second piston to move upwards to compress nitrogen, so that the downward pressure from the cantilever beam is slowly released, and meanwhile, the cantilever beam is supported so as to prevent deformation and damage.

The invention relates to a device and a kit that can be assembled into a structure. Apparatus and methods provide tower assemblies that can be reconfigured to provide a substantially infinite number of configurations. Floor panels may be reformed. Inner and outer walls, including portions with doors and windows, may be added or removed. The multi-floor assembly may be built from each further floor supported by the underlying floor. A complex roof can be built and placed on the top of each floor. Such roofs and floors can be easily removed for viewing the interior scene. However, when removed, the roof and the underlying floor maintain their shape because the roof and floor are joined together by dowels. The floor portions may also be connected by edge connectors around the floor portions.

The invention discloses a miniature plug-in mounting type high-pressure hydraulic overflow valve which comprises a valve body, a pressing ring, a spring seat, a spring, a fine adjustment gasket, a ball seat, a valve seat, a shell, a filter, an expansion pin and a steel ball. The whole overflow valve is of a cylindrical structure and is free of threads and sealing pieces, the hydraulic device does not need to design threaded connection and sealing installation space, and the size of the hydraulic device is greatly reduced. A filter is arranged at the inlet end, the influence of impurities in hydraulic oil on sealing can be effectively avoided, in order to improve the sealing reliability, a high-precision steel ball and a valve seat are adopted for sealing, and meanwhile a ball seat, a spring seat and a spring are arranged for guiding and providing pressure. The invention has the advantages of compact structure, small volume, no thread and sealing element connection and good sealing performance, and is suitable for a high-pressure hydraulic system.

The utility model relates to the technical field of positioning pins, in particular to an embedded type positioning pin mechanism for an automobile chassis structural part welding clamp, which comprises a connecting mechanism, a positioning pin is arranged at the bottom of the connecting mechanism, the connecting mechanism comprises a shell, an inner cavity is arranged at the bottom of the shell, and the positioning pin is arranged in the inner cavity. A first threaded hole is formed in the shell and communicates with the inner cavity, a connecting screw is in threaded connection with the interior of the first threaded hole, the positioning pin comprises a body, the top of the body is fixedly connected with a connecting block, the connecting block is located in the inner cavity, a second threaded hole is formed in the connecting block, and the second threaded hole communicates with the first threaded hole. The second threaded hole is located under the first threaded hole, and the bottom of the connecting screw is in threaded connection with the interior of the second threaded hole. The utility model provides a separable positioning pin mechanism, which can prevent the positioning pin from being too long to influence the welding of an automobile chassis structural member.

A system for building a play area comprising: two or more panels, each of the two or more panels comprising: a connector; and at least one magnet positioned in the connector such that the at least one magnet can rotate; wherein each of the two or more panels are configured such that when at least one edge of the first panel is brought towards at least one edge of the second panel from any direction, the at least one magnet in each panel orientate such that a magnetic connection is formed between the two or more panels; and wherein the at least one magnet comprises at least one cylindrical magnet, the at least one cylindrical magnet being diametrically magnetized; wherein the at least one magnet comprises: a first magnet housed in a first end of the connector; and a second magnet housed in a second end of the connector, wherein the connector connects a first dowel and a second dowel

This item is to be attached to a horizontal groove in a shelf board. A dowel attached to the side wall of the storage shelf is inserted into the horizontal groove in the shelf board, and the shelf board is fixed by engaging the dowel with the item. The part shown in solid line is the part for which design registration is sought, and the dashed line indicates only the boundary between the part for which registration is sought and the other parts.