72results about How to "Guaranteed connection accuracy" patented technology

The invention discloses a steel pipe arch general assembly method. The steel pipe arch general assembly method comprises the steps that S1, according to setting-out collected data in pre-installed computer software, setting-out of truss arch ribs is carried out on steel plates leveled on a general assembly site using total stations, theodolites and leveling measuring equipment, and wall stall structures are arranged at the positions of the arch ribs and the positions of steel pipe joints; S2, cushion blocks of different heights are arranged on ground steel plates to meet line style requirements of planes and vertical planes of the truss arch ribs; S3, the locating positions of upper and lower anchoring boxes of the arch ribs, built-in flanges of joints and inclined struts of the arch ribsare set out at the corresponding positions of jig frames, so as to ensure assembling accuracy of the general assembly of the arch ribs and reduce errors of the general assembly; and S4, a jig mould ofthe general assembly is detected, and a test report is issued after passing the test. According to the steel pipe arch general assembly method, the manufacturing and erection precision is improved, the design intention is realized, the equipment is simple, the material preparation and purchasing are easy, and the materials can be reused; and the construction difficulty is reduced, the productionefficiency is improved, and the economic benefits are promoted.

The invention discloses a modularized robot end effector. The modularized robot end effector comprises a modularized finger capable of self-adaption adjustment and an exchangeable base platform. The self-adaption adjustment modularized finger comprises a customizable fingertip, a parallel connecting rod, a first adjustable connecting rod, a second adjustable connecting rod and bottom connecting rod. A robot arm is adjusted independently or customized according to needs of users, various functions of a hand is achieved by one robot arm, the replacement is simple, and the modularized finger capable of reconstructing can achieve the expansion of the grasping function.

A cleaning device for the outer surface of a trash can comprises a container (9) for containing clean water, a brush (10) arranged on the inner wall of the container (9), a driving base plate (1) for transporting the container (9) and a lifting and grabbing device. The lifting and grabbing device is arranged on the driving base plate (1) and used for grabbing the trash can. The trash can can be brushed in the container (9) through the lifting and grabbing device, and the trash can is not cleaned by manual work and a water gun. Thus, the cleaning efficiency for the trash can is improved, and the water using amount is reduced.

The invention relates to a reinforced concrete combination column structure which mainly comprises an upper steel tube column, a lower steel tube column, a lining tube, connecting ring plates and a vertical connecting screw; the upper steel tube column and the lower steel tube column are connected through the lining tube, concrete air vents and concrete pouring holes are formed in the surface of the steel tube columns, the connecting ring plates are arranged on the upper steel tube column and the lower steel tube column, the connecting ring plates are put on a cross-shaped rod and are anchored through horizontal screws on ring plate connecting end plates, and are horizontally clamped through U-shaped fastening brackets connected in series on the cross-shaped rod; the upper connecting ring plate and the lower connecting ring plate are connected through the vertical connecting screw, the vertical connecting screw and the upper connecting ring plate and the lower connecting ring plate are anchored by adopting screw caps, and a regulating and positioning top support is arranged on the end of the vertical connecting screw; and beam-column reinforcements are bound at the outer peripheries of the steel tube columns and templates are erected at the outer peripheries of the steel tube columns. According to the reinforced concrete combination column structure, the connecting node of the upper steel tube column and the lower steel tube column has strong anti-shearing performance, all members are simply and conveniently assembled, and the technical and economic benefits are prominent.

The invention provides a position measuring system and method based on a grating ruler and an encoder, and belongs to the technical field of measurement. The system is composed of a data collection device, a magnetic connection device, a numerical control device and a computer terminal. A rotary encoder and a grating ruler are taken as the main measurement components, when the numerical device moves, the grating ruler rotates taking the rotary encoder as the center, data of the rotary encoder and the optical ruler is acquired in real time by a data collection card and the computer terminal, relative coordination of an end effector of the numerical device is obtained by calculation to achieve real-time position measuring of the numerical device when the numerical device moves on a fixed plane, operation of the measuring process is convenient, data accuracy of measurement is higher, and by adopting the magnetic connection device, safety and reliability of the device are improved.

The invention relates to a novel structure of a novel differential type electric-hydraulic proportional uniform-pressure-drop valve. The differential type electric-hydraulic proportional uniform-pressure-drop valve comprise a valve core, a valve cavity, a proportion electro-magnet and a valve rod, wherein the valve core is provided with a valve core connecting portion located on the upper end of the valve core, the upper and middle portions of the valve core providing a differential area and the lower portion of the valve core located on the lower end of the valve core; an inlet channel, the valve cavity, an outlet channel or an oil return port channel form a fluid channel; the proportion electro-magnet provides an electromagnetic force to ensure the pressure difference between the inlet and the outlet of the differential type electric-hydraulic proportional uniform-pressure-drop valve to change continuously along with an electric signal; and the valve rod extends in the valve body and moves along the longitudinal axis of the valve rod, and the valve rod is provided with a first end and a second end. The differential type electric-hydraulic proportional uniform-pressure-drop valve provided by the invention is simple in structure and easy to maintain. The electromagnetic force of the proportion electro-magnet is effectively reduced according to the design of the pressure difference structure of the electric-hydraulic proportional uniform-pressure-drop valve, so that the volume of the proportion electro-magnet is reduced and the volume of the whole electric-hydraulic proportional uniform-pressure-drop valve is reduced.

A thermo-decoupling expandable truss system applicable to a space planar antenna comprises a thermo-decoupling rectangular frame and an expandable truss. A thermo-decoupling function of bottom frame connectors can be used for releasing in-plane degrees of freedom of the planar antenna to keep a mounting foundation of the expandable truss unchanged under high and low temperature conditions, and in-orbit reliable expansion into a stable truss supporting system can be guaranteed. The expandable truss is contracted in a launching stage to bear load in the launching stage and can be expanded reliably to provide sufficient expansion rigidity and precision for the planar antenna after injection. The technical defect of failure in keeping profile accuracy of an existing antenna supporting structure in space severe temperature field is overcome, the system is available for thermo-decoupling with the antenna to release thermal stress, and the requirement of the antenna on a high-accuracy high-rigidity expandable supporting structure can be met.

The invention provides a launching vehicle with a locking mechanism and an auxiliary erecting device. The launching vehicle comprises the locking mechanism and the auxiliary erecting device, wherein one end of the auxiliary erecting device is hinged to a frame through a spring lower hinged support; the other end of the auxiliary erecting device is a movable end; the movable end is sleeved with a spring upper hinged support; the spring upper hinged support is hinged to an erecting arm; the locking mechanism is installed on the erecting arm; and the locking mechanism is used for fixedly connecting the erecting arm and a launching pad. The launching vehicle solves the problems that the mode of manually assembling and disassembling the erecting arm and the launching pad is inconvenient to operate, the connecting precision is reduced, the requirement for structural rigidity in the rocket erecting process is high, and the cost is high, the process of manually connecting the launching pad and the erecting arm is replaced with the locking mechanism, the operation is convenient, the connecting precision is guaranteed, and the cost of each component in the rocket erecting process is reduced by utilizing the auxiliary erecting device.

The invention relates to the field of building structures, aims to solve the problems that an existing curtain wall structure is long in field mounting and construction time, and the construction quality of the curtain wall structure is difficult to guarantee, and provides a curtain wall keel unit, a curtain wall unit and a curtain wall structure. The curtain wall keel unit comprises a rectangular first frame and a cuboid second frame, wherein the second frame is provided with a first face, a second face, a first lateral side and a second lateral side, the first face is close to and detachably connected to the first frame, the second face is opposite to the first face and protrudes out of the first frame, and the first lateral side and the second lateral side are connected with the first face and the second face. The curtain wall unit comprises the curtain wall keel unit, and the curtain wall structure comprises the curtain wall unit. The curtain wall keel unit, the curtain wall unit and the curtain wall structure are high in construction efficiency and good in construction quality.

The invention discloses a badminton racket carbon fiber handle. The handle comprises a taper front sleeve, a handle body and a rear sleeve of a carbon fiber integrated structure, and the carbon fiberhandle further comprises a carbon fiber integrated straight hole structure arranged in the center of the taper front sleeve, the handle body and the rear sleeve; the cross section of the handle body is of a hexagonal structure, and the rear sleeve is provided with a weight adjustable device. The taper front sleeve, the handle body and the rear sleeve of the carbon fiber integrated structure have the advantages of being low in weight and high in strength, and the connecting strength and connecting precision of the carbon fiber handle and a middle rod are guaranteed; the front sleeve and the handle body are internally provided with elastic shock absorption materials, the shock absorption function is achieved, arms of athletes are not prone to ache when the athletes play badminton for a longtime, and use comfort is improved; by means of reinforcing ribs between the integrated straight hole structure and the handle body, the whole strength is guaranteed, the use strength of the carbon fiber handle connected with the middle rod is guaranteed, and it is ensured that the handle is durable and not likely to break off or bend.

The invention discloses a steel-concrete combined beam prefabricated concrete bridge deck slab and steel beam high-precision overlapping method. The steel-concrete combined beam prefabricated concretebridge deck slab and steel beam high-precision overlapping method comprises the following steps that a prefabricated concrete bridge deck slab is prepared; an overlapping positioning basis is set; the prefabricated concrete bridge deck slab and a steel beam are overlapped; before a prefabricated concrete bridge deck slab embedded part and the steel beam are welded and factory wet joints are poured, powerful confinement connection is carried out on the wet joints; and butt weld of the prefabricated concrete bridge deck slab and a steel beam partition and butt weld of peripheral embedded steelplates are welded, the factory wet joint concrete is poured, and overlapping construction of the concrete bridge deck slab is completed. According to the prefabricated concrete bridge deck slab and steel beam high-precision overlapping manufacturing technology that the steel bars between the wet joints of the steel-concrete combined bridge adopts mechanical connection joints, by means of the setting of the base line positioning basis, the connecting precision of the prefabricated concrete bridge deck slab and the steel beam and the steel bars is controlled, and the alignment precision of the prefabricated concrete bridge deck slab and the steel beam is effectively achieved.

The invention relates to a rapid battery box release structure for electric vehicles. The rapid battery box release structure comprises a battery box main body (1) containing a battery. The battery box main body (1) is placed on a locking and fixing structure (2) and a sliding guide structure (3), which play a positioning or guiding role when the battery box is installed or pulled out. The back side of the battery box main body (1) is provided with a water-electricity integrated fast change connector (4), which satisfies energy and signal transmission required by the battery box and connectionof a cooling system. According to the invention, the guide function of rapid release is realized through the sliding guide structure, the fixing function is realized through the locking and fixing structure of the battery box (containing the battery), and the energy and signal transmission of the battery box and the quick plugging function of the cooling system are realized through the water-electricity integrated fast change connector. Rapid release of the battery box is achieved. Meanwhile, the structure of the invention has advantages of simple operation, reliable connection and good system stability, and greatly facilitates daily maintenance and emergency disposal of the battery box (containing the battery).

The invention discloses a unit-type metal curtain wall which comprises a plurality of rectangular metal plates in transverse-vertical splicing connection, through connection members, and shielding members used for shielding dividing joints between each two adjacent metal plates. Each through connection member comprises a vertical reinforcing side rib used for being connected with a vertical free side on the right side, a vertical connecting side rib used for being connected with a vertical free side on the left side, a transverse connecting side rib used for being connected with a transverse free side at the bottom, a transverse reinforcing side rib used for being connected with and supporting a transverse suspending side at the top, a transverse through connection groove used for being connected with and supporting a transverse reinforcing side rib, and channel steel used for being connected with and supporting the transverse through connection groove. Deformation of the metal plates of the curtain wall caused by temperature changing can be eliminated effectively, convex faces or concave faces of the metal plates are prevented, and a curtain wall framework is not needed.

The invention discloses a multi-layer heat insulation pad, which comprises an upper layer heat insulation pad (1), a middle layer heat insulation pad (2), a lower layer heat insulation pad (5) and a cladding layer (3); the lower layer heat insulation pad ( 5), the middle layer heat insulation pad (2) and the upper layer heat insulation pad (1) are installed on the tooling in turn, and pressed from the upper end; the outer surface and the upper and lower surfaces of the three-layer heat insulation pad are covered with a cladding layer (3) , and press it tightly; cut out a V-shaped opening on the upper and lower ends of the cladding layer (3), and press the remaining cladding layers at both ends to the upper heat insulation pad (1) and the lower heat insulation pad (5) top; finally roughen the coating layer (3) on the end faces of the upper layer heat insulation pad (1) and the lower layer heat insulation pad (5) to form the roughened surface (4). The invention adopts the form of multi-layer heat insulation pad, and improves the heat insulation effect by increasing the contact thermal resistance, and solves the temperature index requirements of different equipment, especially these high-precision equipment, in a limited space.

The invention discloses an integrated bearing seat which is characterized by comprising a flange disc, a left bearing seat and a right bearing seat, wherein bolt holes are uniformly formed in the flange disc and screw holes are formed in both the left and right bearing seats. The invention aims at providing the integrated bearing seat, the two bearing seats are integrally manufactured; not only is the connecting method of the bearing seats simplified, and also the connecting accuracy of the two bearings is guaranteed and the integrated bearing seat is compact in structure.

The invention discloses an electronic cigarette pressing and testing all-in-one machine, and relates to the technical field of electronic cigarette processing. The machine comprises a main machine body and a testing assembly, the left side of the upper end of the main machine body is provided with a pressing assembly, the testing assembly is arranged in the rear middle of the upper end of the main machine body, and the testing assembly comprises a connecting seat, an adjusting cylinder, a fixing frame, limiting sliding rails, limiting sliding blocks, a placement carrier plate, a testing plug connecting groove and a testing plug. According to the invention, the height of the testing plug can be adjusted according to the model of an actually tested electronic cigarette through the lifting fixing frame, so that the connection accuracy between the testing plug and the electronic cigarette is ensured; and the limiting slide blocks arranged at the two sides of the placement carrier plate cooperate with the limiting slide rails arranged at the two sides in the fixing frame, so that the placement carrier plate can be pushed by an electric push rod at the inner rear end to horizontally and linearly move, an automatic plugging test between the placement carrier plate and the electronic cigarette is realized, and the actual use effect of the all-in-one machine is improved.

The invention relates to the technical field of natural gas pipeline welding, in particular to an anti-corrosion natural gas pipeline laying and welding auxiliary device. The anti-corrosion natural gas pipeline laying and welding auxiliary device comprises a supporting seat, and a lifting structure is arranged in the supporting seat; a limiting structure is arranged between the lifting structure and the supporting seat; the side face of the supporting seat is connected with a guide structure; a moving structure is arranged on the bottom side of the guide structure; a clamping and fixing structure is arranged on the top side of the guide structure; and a connecting structure is connected between the clamping structure and the guide structure. The overall stability of the auxiliary device is guaranteed through the lifting structure, the stability of the supporting seat is further guaranteed through the limiting structure, lifted pipelines are preliminarily positioned through the guide structure, alignment between the pipelines is facilitated, guiding and position calibration are conducted on the lifted natural gas pipelines through the moving structure, the pipelines have better stability in the position calibration process through the clamping and fixing structure, shaking between the structures is avoided through the connecting structure, and meanwhile installation is convenient.

The invention relates to a compact emergency governor. The compact emergency governor comprises a shell, wherein the shell is annular, a through groove is formed in the annular circumferential face of the shell, a flying ring is embedded in the through groove, and the flying ring is connected to the shell through a pin and swings in the through groove with the pin as the center; a hole is formed in the bottom of the through groove, a spring is arranged in the hole in a matched mode, the spring is fixed in the hole through a screw-in type screw, one end of the spring abuts against the screw-in type screw, the other end of the spring abuts against with one end of the flying ring, the other end of the flying ring makes contact with the shell, and the center of gravity of the spring and the center of gravity of the flying ring are located on the two sides of the pin respectively. Compared with the prior art, the requirement for perforating in rotors is avoided, and the strength of the rotors is guaranteed; the rotors are connected through keys so as to be fixed to one another, the probability that the compact emergency governor is applied on different rotors is achieved while the accuracy of connection between the compact emergency governor and the rotors is guaranteed, secondary utilization of the emergency governor is achieved, cost is reduced, and efficiency is improved.

The invention relates to a large bridge support base plate and a connecting method thereof. The base plate is installed at the bottom of the steel beam bottom plate of a bridge and comprises a base plate body. Countersunk bolt holes are evenly formed in the middle area of the base plate body, and connecting weld joints welded and fixed to the steel beam bottom plate are arranged on the four sidesin the circumferential direction. The base plate body is installed at the bottom of the steel beam bottom plate in a matched mode through the countersunk bolt holes and countersunk bolts and is weldedand fixed to the bottom of the steel beam bottom plate through the connecting weld joints. The connecting method comprises the following steps: (1) controlling the connecting precision of the supportbase plate; (2) eliminating the welding stress of the support base plate; and (3) controlling the deformation of the support base plate. The problems existing in the prior art can be effectively solved, the mounting precision and stress safety of the ultra-large support base plate are guaranteed, the service life of a bridge is prolonged, and operation safety is improved.

The invention relates to a flange connection device for improving composite pipe structure stability. The device comprises at least two flanges and a sealing element, and the sealing element is assembled on a connection end face of two composite pipes; the composite pipe connection end is provided with a mounting groove, a groove wall, adjoined to the sealing element, of the mounting groove is a near groove wall, the groove wall, departed from the sealing element, is a remote groove wall, and height of the near groove wall is less than or equal to height of the remote groove wall; the mountinggroove is configured with a connection piece, the connection piece is buckled on a top edge of the near groove wall, a side wall of the flange connects the connection piece through supporting and pressing, and the two composite pipes are in locked connection through the flange. With the connection device provided by the invention, arrangement of a protruding structure is not needed for an end part of the composite pipe, moreover, the flange, the connection piece and the composite pipe are all in a separate state, thus, protection for a pipe wall of a pipeline during transportation or storageis facilitated, damage rate of the pipe wall and deformation rate of the end part of the pipeline are reduced effectively, consequently, connection precision of the end part of the pipeline is guaranteed, and airtightness is guaranteed.

The invention provides a full-automatic welding device for steel pipe furniture. The full-automatic welding device comprises a forming mechanism for machining triangular steel pipes, a painting device for painting the outer surfaces of the triangular steel pipes, a polishing mechanism for polishing the two end faces of the triangular steel pipes, a transmission device for changing colors of the triangular steel pipes, a first assembling mechanism for assembling the transmission device into a table main body, and a second assembling mechanism for connecting the triangular steel pipes to the transmission device. According to the full-automatic welding device for the steel pipe furniture, through high-automation production, the production efficiency is improved, and the labor cost is greatly reduced. The invention further provides a full-automatic welding method for the steel pipe furniture.

The invention discloses a lofting and unfolding method for a steel outfitting pipe in the technical field of ship pipeline connection. The lofting and unfolding method comprises the following steps: acquiring a front view and a side view, making equal reference circles on the front view and the side view, acquiring an intersecting line and girth by utilizing a prime line method, and acquiring a lower boundary of a lofting and unfolding view of a conical pipe and an intersecting line trepanning sample drawing of a cylindrical pipe by utilizing the prime line method. According to the method, the intersecting line of the conical pipe and the cylindrical pipe is obtained by making the equal reference circle in the front view and the side view of the conical pipe in cooperation with the prime line method, and then the lower boundary of the lofting expansion drawing of the conical pipe and the intersecting line trepanning sample drawing of the lofting expansion drawing of the cylindrical pipe are obtained through the prime line method, so that the lofting expansion precision of the iron outfitting pipe is improved, and the connection precision of the conical pipe and the cylindrical pipe is ensured.

The invention provides an outdoor elevator steel structure shaft and a construction method thereof. The outdoor elevator steel structure shaft is provided with shaft unit bodies each composed of fourvertical columns of hollow square pipe structures and a plurality of transverse beams; the transverse beams are fixedly connected with the upper portions and the lower portions of the four vertical columns to form a frame structure; the outdoor elevator steel structure shaft is formed by the vertical columns on the multiple shaft unit bodies in an end-to-end spliced mode; butting steel angles arearranged on the butted positions of upper vertical column bodies and lower vertical column bodies; the two ends of the butting steel angles are inserted into square pipes of the upper vertical columnbodies and the lower vertical column bodies and fixedly connected with the inner walls of the square pipes; positioning guiding pieces are further arranged at the butted positions of the upper vertical column bodies and the lower vertical column bodies and fixedly connected with the upper vertical column bodies; and the lower ends of the positioning guiding pieces extend to the upper ends of the lower vertical column bodies and are attached to the positions, at the upper ends of the lower vertical column bodies, of the outer walls of the square pipes. According to the outdoor elevator steel structure shaft and the construction method thereof, all the unit bodies are connected through the two kinds of parts of the specially-made butting steel angles and the positioning guiding pieces, the efficiency is high, and accuracy is good.

The invention provides a device for installing an erecting oil cylinder and a rocket erecting system. The device comprises a chassis, the chassis is fixed to the ground through a fixing piece, a lifting bracket is arranged on the chassis, and one end of the lifting bracket is hinged to the chassis 1 through a first hinged shaft seat. A lifting oil cylinder is arranged on the chassis, and the two ends of the lifting oil cylinder are connected with the chassis and the lifting bracket correspondingly and used for lifting the lifting bracket. A moving mechanism is arranged at the other end of the lifting bracket, an oil cylinder bracket is movably connected to the moving mechanism through a second hinged shaft seat, and the oil cylinder bracket is used for lifting the vertical oil cylinder. One end of the erecting oil cylinder is movably connected to a third hinged shaft base fixed to the ground, and the third hinged shaft base is located on the side, connected with the first hinged shaft base, of the lifting bracket. The device is easy to operate, transverse adjustment of the erecting oil cylinder can be achieved, and the connecting precision of the erecting oil cylinder is guaranteed. In addition, the device adopts automatic control, so that manpower is greatly saved, and the launching preparation time is shortened.

The invention relates to the technical field of steel structures, in particular to a special large equipment steel structure connecting piece. According to the adopted technical scheme, a cylinder assembling structure is included, a cylindrical structure is arranged on the left side of the cylinder assembling structure, the upper end and the right side of the cylinder assembling structure are of aplane structure, and the lower end of the cylinder assembling structure is of an arc structure; a completely-through cylinder assembling hole is formed in the center position of the cylindrical structure on the left side of the cylinder assembling structure, and a rectangular safety protection groove is formed in the cylinder face of the right side of the cylinder assembling hole; a fastening connecting hole is formed in the upper end plane of the cylinder assembling structure, the fastening connecting hole does not penetrate the arc structure at the lower end of the cylinder assembling structure, and U-shaped structural steel is arranged at the lower end of the right side of the cylinder assembling structure. The special large equipment steel structure connecting piece has the beneficialeffects that using is more convenient, the structural strength is high, connecting precision and connecting tightness between components can be guaranteed during large equipment connection, the service life of the components is longer, and assembling and connecting are higher in efficiency.

The invention discloses a small water pump gear box, which belongs to the technical field of transmission devices of water pump power systems. Including the box body, an oil pump is arranged on the top of the box body. Along the longitudinal section direction of the box body, an input shaft, an input gear, an output shaft, an output gear, a transmission shaft and a transmission gear are sequentially installed in the box body. One end of the input shaft is connected with the power shaft, and the other An input gear is installed at one end; a transmission gear is installed on the transmission shaft, and the transmission gear meshes with the input gear; an output gear is installed on the output shaft, and the input gear meshes with the transmission gear and the output gear respectively; the box body is connected to the box body through the output shaft The front is connected to the water pump, and the rear is connected to the power shaft through the input shaft. The invention has the advantages of compact structure, good reliability, small volume, high transmission efficiency and the like.

The invention provides an industrial land performance evaluation method and an industrial land performance evaluation device. The industrial land performance evaluation method comprises the followingsteps: S1, determining an evaluation object and an evaluation unit; S2, constructing an industrial land performance evaluation index system; S3, obtaining evaluation index values through multiple ways; S4, determining an evaluation index weight and performing index standardization processing; S5, calculating and grading performance evaluation scores of the industrial land; S6, correcting evaluation results. Through performance evaluation, the land is determined by an enterprise, and the enterprise is managed according to the land. Enterprise saving intensive development is guided, element resource utilization benefits are improved, and enterprise high-quality development is promoted; industrial land management is better served, orderly development of low-efficiency industrial land redevelopment work is promoted, and industrial transformation and upgrading are promoted.