49results about How to "Guaranteed installation position accuracy" patented technology

The invention designs a gate slot construction device, which is used for realizing rapid gate slot construction of a gate by adopting a mechanical process. The device is provided with a gate slot positioning and clamping mechanism and a steel template, wherein left and right side members of each section of gate slot are connected with a climbing mechanism; after a gate slot is arranged, the lower end of the gate slot is kept fixed; a gate slot pouring space is closed by using the steel template, and concrete is poured; and the gate slot climbing device climbs by one section after one layer of concrete is poured every time. A truss structure in a novel gate slot construction device for the gate has the characteristics of high overall rigidity, high reliability and generality in a certain size range, so that the conventional open air dangerous operation way is turned into a way which is centered by highly mechanical assembly operation and assisted by manual operation, the construction safety and quality of a gate slot for a planar gate or an arc-shaped gate are guaranteed easily, and maximization of an engineering economic value is realized through a rapid construction way.

The invention discloses a method for manufacturing roofing truss. The truss is constructed by truss nodes which are formed by assembling truss members by welding. The manufacturing steps are: decomposing an integral truss into the truss members in a computer, and manufacturing the truss members; manufacturing a bed-jig for assembling by welding; locating an upper chord, a lower chord and a taper transition section on the bed-jig, hoisting and locating brackets of sub-trusses and welding; hoisting and locating brackets of straight web members and welding; hoisting and locating brackets of slant web members, welding and measuring; hoisting and locating drawing plates, mounting stiffening plate, and welding; re-hoisting to the bed-jig for measuring and calibrating; marking out residual lines at the end parts and butting; and integrally assembly. The upper chord and lower chord in the invention adopts integral manufacturing, dispenses with intermediate inlaying web member, thus shortening distance between the upper chord and the lower chord, reducing assembly area and improving processing efficiency; the computer is adopted to collect coordinate data, thus ensuring preciseness of mounting and locating, reducing working hours, and increasing economic benefit.

The invention discloses a large-scale bolt high-precision pre-burying construction method. The number of pre-buried large-scale bolts is N, all the large-scale bolts are pre-buried in a construction device foundation, the large-scale bolts comprise screw rods and bases, external threads are arranged at the top ends of the screw rods, the bases are arranged on the bottom portions of the screw rods, and the device foundation is divided into a lower foundation cushion layer and an upper device foundation with the plane where the bottom portions of the bases of the large-scale bolts are located as a boundary. The method comprises a first step of carrying out concrete pouring construction on the lower foundation cushion layer, a second step of carrying out measurement and paying off, a third step of mounting a bolt locating control rack, a fourth step of mounting a bolt reinforcing support, a fifth step of tensioning a locating steel wire net, a sixth step of mounting the large-scale bolts, a seventh step of removing the bolt locating control rack and the locating steel wire net, and an eighth step of carrying out concrete pouring construction on the upper device foundation. The method is simple in process, reasonable in design, convenient to achieve, good in using effect, and capable of simply, conveniently and fast achieving the high-precision pre-burying process of the large-scale bolts in the device foundation in high quality.

The invention relates to the technical field of oil seal installation, and specifically relates to a device for installing crank shaft rear oil seal; the device comprises a connecting disk, a sliding gland which is sleeved outside the connecting disk and in slide fit with the connecting disk, and a compressing nut which is matched with a screw hole in the connecting disk after penetrating the sliding gland. In the device for installing crank shaft rear oil seal, the sliding gland acts on the rear oil seal via the connecting disk, thus makes the rear oil seal be uniformly stressed and coaxially guided into the crank shaft end in parallel, thereby guaranteeing the precision of the installation, being able to effectively avoiding the hidden trouble of oil leakage caused by that the rear oil seal is not uniformly stressed during the installation process; additionally, by arranging a limit protrusion on the sliding gland, the depth of installing the oil seal can be determined as needed, thus ensuring the installation position and the installation precision of the oil seal; the device for installing crank shaft rear oil seal is simple, practical, convenient, and simple in installation process, thereby effectively preventing lubrication oil leakage caused by inclined installation and unfulfilled installation or excessive installation of the oil seal.

The invention discloses a welding substrate for an electronic product. The welding substrate comprises a base plate, wherein the base plate is provided with a metallized graph layer, the metallized graph layer is provided with a gold-tin film layer, a barrier layer is arranged between the gold-tin film layer and the metallized graph layer and is a single metal film layer or a composite metal film layer, and the gold-tin film layer is a gold-tin alloy layer or is of a multi-layer structure formed by alternately compounding gold layers and tin layers. With the adoption of the film substrate, the graph line accuracy is high, the surface smoothness of the film layer is good, a chip can be directly welded and located without needing to precasting solders, the installation and locating accuracy of the chip can be ensured, and the film substrate is suitable for photoelectric products of high-power LED (light-Emitting Diode) optical communication and the like. Meanwhile, according to the film substrate disclosed by the invention, the proper component proportion of gold and tin in the film substrate can be adopted according to different chips needed to be welded on the underlay film substrate, so that the welding performance of the chips is better.

The invention belongs to the technical field of ships, and relates to a mounting method of an energy-saving stator, which comprises the following steps of: (1) manufacturing fixed fins in a fragmentation manner, and reserving allowance on the folding end surface of each fixed fin; (2) inverting the tail shaft hub steel casting on a platform, and adjusting the tail shaft hub steel casting to a horizontal state; (3) adjusting the inclination angle and size of the manufactured fixed fin by using a total station and a plumb bob tool, and carrying out OTS pre-closure on the stator; (4) surveying and cutting the allowance of the closed end surface of the fixed fin in place by using a projection method; (5) resetting the trimmed fixed fins and the trimmed tail shaft hub steel casting again according to design requirements, fixing the inclination angles and the space positions of the fixed fins, wherein the adjacent fixed fins are in rigid connection through connecting pieces, and the fixed fins form a stator set; and (6) hoisting the stator group to the inverted tail shaft hub steel casting, and assembling the stator group and the tail shaft hub steel casting. The manufacturing and mounting precision is high, and the manufacturing and mounting period is effectively shortened.

The invention discloses a Venturi injection pipe for a dust remover. The Venturi injection pipe comprises a diffusion pipe, Venturi nozzles and filter drums; air outlet holes are formed in the diffusion pipe; the upper end of each Venturi nozzle is fixedly arranged on one air outlet hole; a lower opening of each Venturi nozzle is arranged above an opening of one filter drum; each Venturi nozzle comprises a shell, a jet pipe and reinforcing ribs; each shell is a hollow column body; an upper opening and a lower opening of each shell are shaped like an outwards-expanded horn; the center of each shell is provided with one jet pipe; the periphery of each jet pipe is fixed together with the outer wall of one shell by using the plurality of reinforcing ribs; and spaces in each jet pipe and one shell are partitioned into a plurality of drainage air passages by the reinforcing ribs.

The invention provides an anchor bolt positioning and correcting device comprising an X connecting frame which is of a cross structure formed by adjusting frames which are cross up and down. Adjustingarms are disposed at four ends of the upper adjusting frame and the lower adjusting frame, the adjusting arms are fixed on the adjusting frames through bolts and nuts, the tail end of each adjustingarm is connected with a positioning steel plate through a vertical connecting rod, the positioning steel plate is provided with a plurality of embedded anchor bolts, the embedded anchor bolts are provided with guide correction structures, the center of the X connecting frame fixes the upper adjusting frame and the lower adjusting frame through a lifting hook fastening structure, and the horizontaladjustment and positioning of the X connecting frame are achieved. The device is provided with an adjusting frame, and the anchor bolt size installation requirements of various mechanical devices canbe met to some extent; after the anchor bolt positioning and correcting device is introduced, the problem of perpendicularity of anchor bolt installation is solved while the anchor bolt installationposition precision is ensured, the construction and removal efficiency is improved, and the device installation accuracy and use safety are ensured.

The invention discloses an embedded nut for connecting overlapping elements, which relates to an embedded nut. The invention solves the problem that one side of the overlapping element is not suitable for screwing operation due to the factors of safety, space and the like, therefore, bolts and nuts can not be used for connecting the overlapping elements. The invention has the first scheme that the interior of a cap is provided with a thread blind hole in the axis direction; the interior of the nut main body is provided with a first thread through hole in the axis direction; the thread blind hole is communicated with the first thread through hole, and has the same hole diameter with the first thread through hole; and the cross section of the locking overlapping edge is in a circle shape. The invention has the second scheme that the interior of the cap is provided with a second thread through hole in the axis direction; the interior of the nut main body is provided with a third thread through hole in the axis direction; the second thread through hole is communicated with the third thread through hole, and has the same hole diameter with the third thread through hole; and the cross section of the locking overlapping edge is in a circle shape. The invention is fixed on the overlapping elements to be connected in advance, and the two overlapping elements can be quickly overlapped and connected through using bolts on one side of the overlapping element by operators.

The invention discloses a motorcycle fairing structure assembly comprising a fairing back plate and a connecting plate on a motorcycle steering column. The motorcycle fairing structure assembly is characterized in that a mounting base and mounting columns are arranged on the fairing back plate, and the mounting columns are fixed on the motorcycle steering column correspondingly to the mounting base; mounting holes allowing the mounting columns to be inserted in and fixed are formed in the mounting seat, fixing holes are further arranged in the fairing back plate, and the fairing back plate is fixed on the steering column connecting plate through the fixing holes. A motorcycle applies the fairing back plate mounting assembly, structural strength of the mounting columns on the connecting plate on the motorcycle steering column is far higher than that of fairing back plate lugs in the prior art, the technical problems of breakage and deformation of the fairing back plate lugs in the prior art are solved, strength of the fairing back plate is improved, mounting position accuracy of the fairing guide plate and safety performance of motorcycle running are guaranteed, probability of occurrence of labor waste and material waste is reduced, and cost is saved.

The invention discloses an enhanced corrugated filtration pipe dust removing device, which comprises a pulse valve arranged on a gas collection box, a blowing main pipe communicated to the gas outletof the gas collection box, and a blowing device arranged on the blowing main pipe, wherein a flower plate is arranged below the blowing device, and is provided with an opening corresponding to the blowing device, and a corrugated filtration unit is arranged at the opening position. According to the present invention, the blowing device uses the Venturi spraying nozzle, and the corrugated filtration unit uses the enhanced corrugated filtration pipe, such that the service life of the product is substantially prolonged, the standardized production can be conveniently achieved, the production efficiency is improved, and the production and maintenance cost can be reduced.

The invention discloses a rod body separation device and method, rod body assembly equipment and method. The rod body separation device is provided with rod body inclined space with an open outer end,so that the corresponding contact with the reaction end surface of the outer end of the rod body is avoided, and the pollution of the reaction end surface is effectively avoided; meanwhile, the rod body is slantwise arranged to ensure that the rod body does not drop out of the rod body inclined space; in addition, separation is performed through the gravity of the rod body, so that the reaction end surface damage caused by collision between the rod bodies due to vibration of a feeder can be effectively avoided, the quality of the reaction end surface of the rod body after output is effectively guaranteed, and the assembling efficiency of the finished product is improved. In addition, a receiving groove is obliquely arranged, so that the bar body can automatically slide downwards into a subsequent structure through gravity, and the structure simplification is facilitated.

The invention relates to an aero-engine blisk-blade welding repair clamping device which is characterized in that a blisk assembly clamping system is installed on a platform linear lifting system and can ascend and descend along with the platform linear lifting system; and a blade flexible clamping system is located on the top of the platform linear lifting system and can clamp blades of the blisk in the X direction and the Y direction. According to the aero-engine blisk-blade welding repair clamping device provided by the invention, clamping of the blisk is achieved through meshing of end teeth, so that high stability is achieved; blisks with different specifications can be clamped by changing the size of the end teeth, so that diversified adjustment of clamping process parameters is achieved; a single-layer clamping chain is adopted as a clamping tool and a heat dissipation device of the blades, and the position of a clamping block and the clamping pressure of the clamping chain are adjusted by controlling the air supply amount of a clamping air cylinder, so that flexible clamping is achieved, and effective heat dissipation is achieved; and a motor is adopted to drive the end teeth to rotate, and the platform is manually lifted, so that multi-phase adjustment of the blisk and the blades is achieved, the precision of the installation position of the clamping chain clamp is guaranteed, and continuous welding repair between the different blades is achieved.