16991 results about "Bolt connection" patented technology

A string securing device includes a base having a central post extending centrally therefrom. A shaft extends through the passage in the central post so as to be connected to the cap mounted to the base by a bolt which extends through the cap from a top of the cap. A ring and a spool are located between the base and the cap, wherein the spool is rotated with the cap by engagement of first and second teeth on the spool and the cap respectively. The ring has multiple ratchet teeth which are removably engaged with third teeth on the cap so as to allow the cap to rotate in one direction. The ring includes flexible members which are deformed to lower the ring and provides straight and upward force to the cap.

The invention relates to a crushing equipment for petroleum coke, in particular to a special crushing equipment for petroleum coke capable of intermittent feeding. The technical problem to be solved by the present invention is to provide a special petroleum coke crushing equipment capable of intermittent feeding, which is fast in crushing speed, high in working efficiency, not easy to be injured in the crushing process, and easy to operate. In order to solve the above technical problems, the present invention provides such a special crushing equipment for petroleum coke capable of intermittent feeding, which includes a bottom plate, a collection frame, a right side plate, a shell, a lower hopper, a crushing frame, etc.; the top of the bottom plate passes through The collection frame is installed by bolt connection, the right side plate is installed on the top right side of the bottom plate by bolt connection, the shell is installed on the top of the right plate by bolt connection, and an intermittent feeding device is installed in the shell. The present invention filters the petroleum coke dropped from the crushing frame through the filter frame, so that the petroleum coke that is not broken completely can be filtered in the filter frame.

The invention discloses a miniature gas turbine combustion chamber, which has an annular structure and mainly comprises a flame tube, an outer casing, an inner casing, a swirler and a fuel oil supply system. The flame tube is formed by welding an outer flame tube, a head end wall and an inner flame tube; the rear end of the flame tube is connected with a rear flange of the casing of the combustion chamber through a screw; the rear end of the outer casing is connected with the rear flange of the casing through a bolt; and a front flange of the casing is connected with the front end of the casing through a bolt. An inlet of the combustion chamber is welded on the front flange of the casing; air radially enters the inlet of the combustion chamber; the front end of the inner casing is fixed in a hole of the inlet of the combustion chamber; the swirler is welded on the head end wall; the fuel oil supply system is fixed on an outer ring of the inlet of the combustion chamber; a main combustion hole, a mixing hole and an air film cooling hole are formed on the flame tube; and an air film slot tongue is welded on the lower part of the air film cooling hole for guiding cooling airflow. A high-energy DC igniter is inserted into the flame tube for realizing ignition starting of the totally annular combustion chamber; and gas is discharged out of the combustion chamber radially under the guiding of a slope of the outer flame tube and a vertical section of the outer flame tube. The miniature gas turbine combustion chamber is applied to a miniature gas turbine. Because the gas at the outlet directly impacts a centripetal turbine, the axial distance of the miniature gas turbine can be shortened, and the space is fully utilized.

A structural flange connection system and method that utilizes structural flanges having a standard bolted connection and a mechanical bond to effectively manage and assist the retention of bolt preloads and substantially eliminate movement between the flange faces due to a reduction in the need for friction load being generated by the bolt clamping force in the flange connection. The structural flanges of the structural flange connection system and method each include an outer rim and a flange lip having a face and a shoulder. The structural flange connection system and method may be utilized in the manufacture and installation of a wind turbine tower, which may be made up of one or more tower sections, and each tower section may terminate in structural flanges of the structural flange connection system and method. When properly aligned, the structural flanges may be bolted together. When each tower section is properly aligned and bolted, the mechanical bond of the structural flanges is also joined together. Such manufacture of the wind turbine tower may occur in the field during installation of the wind turbine tower.

The invention discloses an energy dissipation type buckling constraint support with a symmetrical initial imperfection unit at the end. The energy dissipation type buckling constraint support is characterized in that the support is composed of an end constraint segment, an energy dissipation segment and a support straight segment; and the two ends are connected with beams or column components or nodes to form a whole through bolt connection so as to achieve the purpose of improving of the resistant-lateral rigidity of components. The energy dissipation type buckling constraint support with the symmetrical initial imperfection unit at the end is adopted, and thus under the action of a small earthquake, the buckling constraint support keeps elasticity; and under the action of a medium earthquake or a severe earthquake, the buckling constraint support enters a yield stage, and the effect of a damper can further be achieved through the good hysteretic energy dissipation performance of the buckling constraint support. Compared with traditional buckling constraint supports, according to a manufacturing technology of the energy dissipation type buckling constraint support, the processes of adding a sleeve outside a core energy dissipation component, grouting and the like in the traditional manufacturing process are avoided in the manufacturing technology, so that manufacturing is convenient. The energy dissipation type buckling constraint support can be prefabricated and formed in a factory, the quality of the components is ensured, the workload of site operation is reduced, and energy conservation and environment protection are achieved.

The invention relates to an ore crushing device, in particular to an industrial continuous ore crushing device, and aims at achieving the technical purpose of providing an industrial continuous ore crushing device which is continuous and reliable in work, convenient to maintain and repair and high in ore crushing efficiency. In order to achieve the technical purpose, the industrial continuous ore crushing device comprises a bottom plate, an L-shaped support, a feeding hopper, a first support rod, a second support rod, a crushing barrel and the like; the L-shaped support is connected to the right side of the top of the bottom plate in a bolt connection mode, the feeding hopper is arranged at the top end of the L-shaped support, the first support rod and the second support rod are arranged on the inner side of the L-shaped support, the first support rod is located over the second support rod, a discharging device is arranged at the left end of the first support rod, and the crushing barrel is arranged under the discharging device. According to the industrial continuous ore crushing device, when ore is crushed, the effects of being continuous and reliable in work, convenient to maintain and repair and high in ore crushing efficiency are achieved.

A heat exchanger, particularly a charge air heat exchanger or exhaust gas heat exchanger, is provided for the heat exchange between a first fluid, particularly a charge air, or an exhaust gas, and a second fluid, particularly a coolant, comprising the following: heat exchanging guides for the first and second fluids, the guides being separated from each other in the core, the core having a plurality of flow channels through which the first fluid flows, and a housing that receives the flow channels and through which the second fluid flows at least one compartment lid, which is flow-connected to the flow channels, and a base that is attached to the compartment lid and that is equipped with one or more passage openings for flow channels. In order to achieve an advantageous connection of the compartment lid to the base, particularly in case the compartment lid and the base are made of different materials, the invention provides that the compartment lid is attached to the base via one or more connections as a bolted connection and / or a slotted crimping.

This invention is a prestressed concrete pole and its construction method. The pole is of a conicity at 1:75, with holes for cables. It can be a single pole or sectional fabricated. The pole is made by reinforce bar cage centrifugal casting. The reinforce bar cage is composed by vertical main bars and normal bars fixed on supporting and positioning loops, and binding outside by helix wire. Two end plates are installed to the pole ends to fix the mail bars. After installed the end plates and before centrifugal casting, pull the plates with 1000-1900KN power, and steaming the concrete to grade over C60, then loose the power. In case of sectional fabricated, the sections are connected to each other through bolts.

A series of various structural steel forged angled L shaped brackets and various steel joining plates for effecting a bolted connection between various new structural lumber members consisting of horizontal beam / vertical column / horizontal rim joists members / horizontal joist beam in various framed structure includes a latitudinal connecting portion and a longitudinal connecting portion. The various embodiments of the forged angled L shaped brackets and various steel joining plates are particularly useful in the context of upgrading or reinforcing existing structures connections at the horizontal beam / vertical column / horizontal rim joists members interfaces in various existing lumber framed structures. The structural steel forged angled L shaped brackets and steel joining plates can be used in various new lumber frame constructions. Also, the structural steel forged angled L shaped brackets and steel joining plates have various proviso features on the manufacturing process and specifications on the embodiments.

Disclosed is a technique of joining two cable racks together in a longitudinal direction thereof. A splice plate is used which has two insertion holes each formed at a position corresponding to a first one of two joint holes in each of adjacent ends of each of two longitudinally-aligned pairs of primary beams of two cable racks, and two lock protrusions each formed at a position corresponding to the other second joint hole, in a manner engageable with the second joint hole. The adjacent ends of the longitudinally-aligned pair of primary beams are joined together by means of engagement between the lock protrusions of the splice plate and the second joint holes of the adjacent ends of the longitudinally-aligned pair of primary beams, and fastening between two bolt and two nuts through the first insertion holes and the insertion holes of the splice plate. Thus, two cable racks can be joined together by performing a bolting operation only at a single position in each of the adjacent ends of the longitudinally-aligned pair of primary beams. This makes it possible to reduce by half a time of joining operation while suppressing a trouble in the joining operation.

Provided are a power device package coupled to a heat sink using a bolt and a semiconductor package mold for fabricating the same. The power device package includes: a substrate; at least one power device mounted on the substrate; a mold member sealing the substrate and the power device; and at least one bushing member fixed to the mold member to provide a through hole for a bolt member for coupling a heat sink to the mold member.

The invention relates to an anti-buckling oblique notching steel plate energy dissipation shear wall which belongs to the technical field of structural engineering. The anti-buckling oblique notching steel plate energy dissipation shear wall consists of an oblique notching steel plate, concrete slabs and an edge frame, wherein the concrete slabs are arranged at both sides of the steel plate and are used for restraining out-of-plane deformation of the steel plate; the edge frame is connected with the steel plate; the steel plate is provided with different forms of chutes designed as required; the periphery of the steel plate is connected and embedded into the edge frame by bolts; the bolts passing through the chutes are connected with the concrete slabs at both the sides. By forming the different forms of chutes on the steel plate, a complex stress state of the steel plate is changed, and a stress mode of taking tension and compression deformation of the steel plate among the chutes as the major mode is formed, and thus, not only is the anti-buckling oblique notching steel plate energy dissipation shear wall beneficial for implementing stable tension and compression energy dissipation, but also parameters of inclined plates among the chutes can be regulated by changing the forms and the sizes (length and width) of the formed chutes, and an inefficacy mechanism of the shear wall is effectively controlled, so that resist lateral stiffness, intensity and ductility of the shear wall can be regulated. Used as a novel lateral force resisting and energy dissipation component, the anti-buckling oblique notching steel plate energy dissipation shear wall can be widely applied to multilayer and high-rise structures.

The invention relates to the field of track beams, in particular to a straddle type single-track double-box rectangular steel-concrete composite track beam structure. The straddle type single-track double-box rectangular steel-concrete composite track beam structure comprises two steel-concrete track main beams parallel to each other; the two steel-concrete track main beams are connected through crossbeams below and a low plain longitudinal; each steel-concrete track main beam comprises a steel beam structure with a box-type cross section and a concrete cuboid structure with a rectangular cross section; each concrete cuboid structure is positioned above the corresponding steel beam structure and is connected with the steel beam structure through shear nails; the span of each steel-concrete track main beam is 30-80 meters; the cross beams are I beams and are in bolt connection with cross beam connecting plates of the steel-concrete track main beams; the low plain longitudinal is a diamond truss, and plain main rod piece parts are respectively connected with the steel-concrete track main beams and the cross beams. The straddle type single-track double-box rectangular steel-concrete composite track beam structure can be suitable for building double-line large-span track beams, and the double-line large-span track beams are large in span, high in transverse stiffness and high in transverse stress performance structurally.

A pivot assembly that can be retrofitted to existing traffic poles. The pivot assembly comprises a bearing assembly disposed between a top plate and a bottom plate. The bottom plate connects to the existing pole foundation with the standard anchor bolt arrangement. Similarly, the top plate connects to the base plate of the traffic pole using additional bolts. Bearings in the pivot assembly allow the pole to rotate relative to the foundation. Preferably, roller bearings are utilized, as these can be contained substantially within the pivot assembly without extending down into the foundation or up into the pole. This means the pivot assembly can be installed in existing, standard traffic poles and foundations without modifying either. The pivot assembly does not interfere with existing wiring or access openings.

The invention discloses a composite beam, which comprises reinforcement concrete prefab beam and section steel joints, wherein both ends of reinforcements of the reinforcement concrete prefab beam are connected with section steels, one end of section steel joint is pre-imbedded into the wall pier concrete and is connected to the reinforcement inside the wall pier, the other end of the section steel joint is remained outside the wall pier, both ends of section steel of the prefab beam and the section steel joints are connected to form the composite prefab beam. Due to the composite beam, the section steel joints and the wall piers are integrated with good connection integration property of the beams and simple process, wherein both ends of the section steel is connected with the section steel joints of the prefab beam to form composite beam, the connection between the prefab beam end and the section steel joints adopts welding, bolt connection type, and the like, the composite beam production can be industrialized, needs no framework, has small materials consumption and rapid construction progress.

The invention discloses a novel temperature control moxibustion device which comprises a cylindrical moxibustion box and a box cover, wherein a moxibustion hole is formed in the bottom of the moxibustion box, and a detachable dust stop screen is arranged on the moxibustion hole. The temperature control moxibustion device further comprises a support frame and a temperature sensor, the support frame is fixed in the moxibustion box, and the temperature sensor is fixed on the bottom surface of the moxibustion box; a screw rod perpendicular to the bottom surface of the moxibustion box is arranged at the lower part of the support frame, a nut seat is in bolted connection with the screw rod, and a fixing ring corresponding to the moxibustion hole is fixed on one side of the nut seat and used for inserting moxa sticks; and the screw rod is driven by a reducing motor fixed on the support frame to rotate. According to the novel temperature control moxibustion device, the therapeutic temperature is regulated by controlling a distance between a moxa stick fire point and a moxibustion acupuncture point, the constant temperature of the moxibustion acupuncture point of a human body is maintained, and the whole device is portable and flexible, so that the temperature of the moxibustion acupuncture point of the human body can be accurately controlled, and an optimal curative effect is achieved.

A two-piece washer to allow tilting movement of the washer elements. One annular washer element includes a convex annular surface that engages with a concave annular surface of a second annular washer element. When the convex and concave surfaces of the respective washer elements are placed in face-to-face engagement, the elements of the two-piece washer can pivot relative to each other. When utilized in a bolted connection, such two-piece washers can allow shifting of the bolted components relative to each other without imposing bending loads on the connecting bolt.

The invention discloses a high-voltage static drive and variable-diameter 3D (three dimensional) printer belonging to the field of 3D printing. The high-voltage static drive and variable-diameter 3D printer comprises a charging barrel, a heating coil and a thermocouple which are wrapped outside the charging barrel, a columnar runner connected with the charging barrel through a bolt and a gasket, and a converter connected through a bolt and fixed at the bottom of the charging barrel, wherein the converter comprises a fixing ring and a rotary ring, the fixing ring has a columnar spring hole, a metal ball the outer diameter of which is slightly smaller than the diameter of the columnar spring hole is connected into the columnar spring hole by using a spring, the fixing ring further has a through hole tightly matched with the columnar runner, the rotary ring can have at least two threaded holes connected with nozzles, semi-spherical grooves matched with the metal ball are arranged corresponding to the threaded holes, one or more needle heads with equal diameters are connected to the nozzles by using threads, diameters of the needle heads corresponding to the nozzles are different, the needle heads are connected with an anode of a high-voltage static generator, and a receiving device is grounded. The high-voltage static drive and variable-diameter 3D printer is suitable for a 3D printing system with a melt or solution as a raw material; needle heads of different diameters are obtained through converting the nozzles; and the high-voltage static drive and variable-diameter 3D printer is driven by high voltage static, and thus the variety of 3D printing materials can be increased, and the quality of a 3D printed product can be improved.

A mounting device for a display device comprising a mounting bracket coupled to the underside of a body and a pivot bracket coupled to the mounting bracket. A pivot bracket is coupled to the mounting bracket at one end thereof. A tilt block is coupled to the pivot bracket and is rotatable about an axis substantially parallel to the body. A carriage bolt is coupled to the tilt block and is rotatable about an axis substantially perpendicular to the body. A display system bracket is operatively connected to the carriage bolt. An interface bracket is connected to the display system bracket and is capable of engaging a display device.

The invention relates to an assembled reinforced-concrete framework beam-column joint adopting vertical bolt connection. The joint comprises a corbel of a precast column and a precast beam, wherein the end face of the corbel and the end face of the precast beam are respectively provided with a concave groove and a convex block which are matched with each other and are respectively provided with a vertical corbel bolt hole and a vertical precast beam bolt hole; and the corbel is matched with the precast beam along the length direction of the precast beam in an embedded fixing manner, bolt cushion plates are arranged at the upper and lower sides of the corbel and the precast beam after the corbel and the precast beam are fixed in an embedding manner, and a bolt vertically penetrates through the bolt cushion plates, the corbel bolt hole and the precast beam bolt hole so as to carry out fixing. A corresponding construction method comprises the steps of precasting, mounting and filling mortar in gaps. The joint and the corresponding construction method have the advantages that the smoothness of force transmission between the precast beam and the precast column is achieved, the joint is reliable in connection and simple in structure, the construction process is simplified, the on-site assembling time is saved, and the production efficiency can be effectively increased.

The invention discloses a high-strength bolt axial force measuring device and measuring method. The measuring device comprises a pull rod, an axial force sensor, a force providing part and a support; the close end of the pull rod is provided with a connecting part for being connected with a high-strength bolt thread end, and the close and far ends of the pull rod are provided with a first match part and a second match part respectively; the first match part is in match contact with the close end face of the axial force sensor, the second match part and the far end of the force providing part act in a match mode, the far end of the support is mounted between the force providing part and the axial force sensor, and the close end of the support is used for being supported on a part connected with a high-strength bolt; and the high-strength bolt axial force measuring device also comprises a strain measuring part arranged on a nut. The measuring method comprises the steps of (1) mounting the strain measuring part on the axial outer face of the nut; 2, connecting the pull rod with the thread end of the high-strength bolt in the match mode; and 3 starting the force providing part to read the value of the axial force sensor at proper time according to the changing condition of the stain measuring part. The high-strength bolt axial force measuring device and method are accurate in measuring by directly measuring the axial force of the high-strength bolt.

A motorcycle foot peg is constructed to absorb shocks and impacts that would otherwise be transmitted to a rider's foot during hard landings of a motorcycle. The impact and shock absorbing motorcycle foot peg has particular applicability to off-road motorcycles. The foot peg has a rigid mounting platform including a mounting plate from which a rigid foot support projects outwardly in cantilevered fashion. The foot support has a flat upper bearing surface and supports a foot pad formed of a resiliently compressible elastomeric material having a Shore A hardness of between about 30 and 60. A foot contact plate is located atop the elastomeric slab. The foot contact plate, the elastomeric slab, and foot support are connected together by bolts passing therethrough. The foot contact plate thereby resides in a floating relationship relative to the foot support and can move both toward the foot support and laterally relative to the foot support to cushion the rider's foot against shocks and impacts. Spacer washers may be provided about the shanks of the bolts to adjust a preload compression on the resilient pad.

The present invention relates to a model test device, and specifically to a frozen soil mechanics model test device. The invention is characterized in that the frozen soil mechanics model test device has a full-steel box type structure which comprises a heat insulation box body, a baseboard temperature controller, a water supplying device, a loading device and a data collecting and processing device. The device adopts a welding mode for connecting to a whole, and only one side plate adopts bolt connection, wherein, the baseboard structure of heat insulation box body comprises a heat insulationbaseboard, a water supplying pool and a top plate of water supplying pool. The structure gives attention to the functions of water supplying and temperature control. The water supplying device comprises a water level controller, the water supplying pool and a water supplying pipeline device. The charging device comprises a hydraulic jack and a hydraulic oil pump. The data collecting and processing device comprises a DT500 / 600 series data collector, a XSL series temperature measuring instrument and various types of sensors. The device of the invention has the advantages of realizing unidirectional and bidirectional freezing condition, realizing the water supplying of water migration in freezing process, providing the load of model test load application damage, monitoring the temperature field and stress field of frozen soil, monitoring the frost heaving, subgrade settlement deformation, etc.; and realizing the automatic collection and analysis of test data in the test process.

The invention relates to an LED lamp production device, in particular to an epitaxial slice cleaning device for LED lamp production. The technical problem to be solved by the invention is to provide the epitaxial slice cleaning device for LED lamp production capable of saving both time and labors, improving the cleaning efficiency and protecting the health of workers. In order to solve the technical problem, the invention provides the epitaxial slice cleaning device for LED lamp production. The device comprises a worktable tabletop, support legs, a first air pipe, a vacuum sucker, a recovery water tank, a reflux water pipe, a solution tank, a water pump, a water outlet pipe, a support plate, a vacuum pump and the like; and the support legs are connected to the bottom of the worktable tabletop through a bolt connecting mode. A nozzle sprays out cleaning solution, and moves left and right to once clean more epitaxial slices, so that the effect of saving both time and labors is achieved, and the cleaning efficiency can be improved.

The invention relates to a construction site dust removing device, in particular to a construction site dust removing device used for preventing fog and haze. The construction site dust removing device used for preventing fog and haze is easy to operate, uniform in spraying and small in work amount, and comprises a flat belt, a circular disc, a first bearing pedestal, a small belt pulley, a connecting rod, a lifting rod, a piston, a cylinder block, a first fixed pulley, a first one-way valve, a first flexible pipe and the like. Wheels are symmetrically arranged at the bottom of a bottom plate. A big belt pulley is arranged on the front side of each right wheel. A push handle is welded to the left end of the top of the bottom plate. A water tank is connected to the left side of the top of the bottom plate in a bolt connection mode. By adoption of the construction site dust removing device used for preventing fog and haze, the effects of easy operation, uniform water spraying and small work amount are achieved, and the construction site dust removing device plays an important role in being good in spraying effect and high in safety and improving the working efficiency.

The invention discloses a connecting joint between a hollow steel tube concrete column and a steel girder and a construction method thereof. The joint comprises a hollow steel tube concrete column, a steel girder, an end plate and a high-strength bolt, wherein the end plate is welded at the steel girder end; the steel girder end at the joint is connected with the hollow steel tube concrete column through the end plate and a bolt and is connected with a column through the prestressed high-strength bolt. In the construction method, the concrete in the steel tube can be prefabricated or cast in situ; the end plate can be welded in a factory; bolt holes on the end plate and the steel tube are preformed in the factory; and only bolt connection needs on-site construction. The joint structure has the advantages of economy, practicality, definite force transmission, simple manufacture, high prefabrication degree, convenient construction, and capacities of avoiding on-site welding and improving joint shock resistance and construction benefit.

A test system of 3D geologic mechanical model is composed of box testing device formed by connecting box cast steel component, angle element and chassis together through high strength bolts; hydraulic loading control system formed by variable ¿C load loading plate with thin jack at top, hydraulic loading control table and oil separator. It features that said loading plate is connected on left and right internal walls of box testing device through thin jack and said loading control table is connected to jack through oil separator and oil pipe.