155results about How to "Realize a tight connection" patented technology

The invention discloses a full-set dismantling and installing construction method of a bridge overpassing an existing line. Full-set dismantling and installing construction is conducted on a plurality of beam segments needing to be dismantled of a used beam to be dismantled from front to back. The full-set dismantling and installing construction method comprises the steps that firstly, a pavement layer of the bridge surface is milled; secondly, roof-propping is conducted on the beam segments; thirdly, preparatory work is conducted before hoisting; fourthly, hoisting and moving-out are conducted; fifthly, one beam segment is installed after replacement; sixthly, full-set dismantling and installing construction of the next beam segment is conducted, specifically, full-set dismantling and installing construction is conducted on the next beam segment needing to be dismantled of the used beam to be dismantled according to the first step to the fifth step of the method; and seventhly, the sixth step is repeated once or more than once till full-set dismantling and installing construction of all the beam segments needing to the dismantled in the used beam to be dismantled is completed. The method is simple in step, reasonable in design, easy and convenient to implement and good in using effect, full-set dismantling and installing construction of the bridge overpassing the existing line can be completed easily, conveniently and rapidly, the construction process is safe and reliable, the construction period is short, and the method is economical and practical.

The invention relates to a sleeve nut, a fastener and an installation method of the fastener. The sleeve nut comprises a base, a sleeve and an interlocking key, wherein the base, the sleeve and the interlocking key are sequentially arranged. The outer diameter of the base is larger than that of the sleeve, and a circumferentially-arranged first knurled gear is arranged at the end, close to the base, of the sleeve. A through hole is formed inside the sleeve, or a threaded hole is formed in the side, close to the interlocking key, of the interior of the sleeve. According to the sleeve nut, as the end provided with the base is connected with a section in an interference fitting mode through the first knurled gear, and the end provided with the interlocking key is buckled to the section through flowing of a material, the sleeve nut is connected with the section in a fastened mode, no requirement for the wall thickness of the section exists, welding and re-tapping are not required, and cost and energy consumption are reduced.

The invention discloses a crossing existing line bridge girder dismounting method. A dismounted bridge girder is a girder crossing an existing railway line and is formed by splicing a plurality of girder segments to be dismounted from front to back. During complete set dismounting construction of any segment to be dismounted, the process comprises the following steps that firstly, a bridge deck pavement is milled, specifically, the bridge deck pavement of the girder segment constructed currently is milled; secondly, the girder segment is jacked up, specifically, the girder segment constructed currently is horizontally jacked upwards through a vertical jacking device, so that the girder segment constructed currently is separated from two supporting piers; thirdly, preparation operation before hoisting is conducted; and fourthly, the girder segment constructed currently is horizontally hoisted upwards through a bridge girder erection machine and moved to the outer sides of the two supporting piers. The method is simple in step, reasonable in design, easy and convenient to construct and good in application effect, the complete set dismounting construction process of the crossing existing line bridge girder can be completed easily, conveniently and rapidly, and the construction process is safe and reliable, the construction period is short, and the method is economic and practical.

The invention discloses a prefabricated building with the good heat insulation performance. The prefabricated building comprises a base plate. A top plate is arranged on the top of the base plate. Theinner ends of heat insulation plates are fixedly connected with decorative plates. The inner ends of side plates are provided with clamping assemblies. Through rotatable connection between the base plate and the side plates, between the side plates and between the side plates and the top plate and arrangement of the heat insulation plates, the prefabricated building with the good heat insulationperformance has the high heat insulation performance. Through clearance fit between clamping rods and transverse grooves and clearance fit between the clamping rods and through holes, the side platescan be vertically tightened, the prefabricated building can be folded and pressed down. Through clearance fit between sliding blocks and sliding grooves and clamping connection between slots and grooves, fulcrum bars can be inserted into the slots by rotating cranked levers and can be tightened by reversely rotating the cranked levers. Through threaded connection of screw rods and cylindrical tubes, cams abut against the cranked levers, and then the top plate below and the base plate above can be in fastened connection. Therefore, the assembly efficiency is greatly improved, and the assembly difficulty is reduced.

The invention relates to a ventilated defrosting device arranged on a refrigerator door body and a refrigerator. The refrigerator door body comprises a shell and an inner container. The ventilated defrosting device comprises a molecular sieve box located between the shell and the inner container and enabling the interior and the exterior of the refrigerator to be communicated. According to the ventilated defrosting device arranged on the refrigerator door body and the refrigerator, the molecular sieve box is adopted to connect the inner side and the outer side of a refrigerator body, and the ventilated defrosting device is simple in mounting structure, easy to operate and free of other hoses in connection; the overall structure is suitable for production of different foaming clamps used in the rotating die combination and up-down die combination processes of the refrigerator door body, and the problems that it is difficult to open a door due to negative pressure in the refrigerator, and energy consumption is high due to frosting are solved effectively.

The invention discloses a disassembly-simple display screen device. The disassembly-simple display screen device comprises a mounting frame and a display screen; a sinking groove matched and connected with a display screen is formed in the right side wall of the mounting frame; a first slip cavity and a second slip cavity are symmetrically formed in the mounting frame on the left side of the sinking groove up and down; an opening slip cavity is formed in the mounting frame between the first slip cavity and the second slip cavity; a communicating groove for penetrating through the opening slip cavity is formed between the bottom of the left side of the first slip cavity and the top of the left side of the second slip cavity; closing grooves downwards elongated are respectively formed in the bottoms of the right sides of the first slip cavity and the second slip cavity, and are provided with mounting grooves for penetrating through the closing grooves and elongated on the left and right sides; slip blocks are slidingly connected into the mounting grooves; guide grooves are symmetrically formed in the elongated sections on the left sides of the mounting grooves up and down; convex parts elongated in the guide grooves are symmetrically arranged on the left sides of the slip blocks up and down; and the elongated sections on the right sides of the mounting grooves penetrate through the mounting frame, and are communicated with the sinking groove. The disassembly-simple display screen device is simple in structure, saves both time and labors during mounting, and is convenient to maintain.

The invention provides a sugarcane harvesting machine. An adjustable header is positioned at the foremost end of the whole machine; a front end feeding inlet a charging device is movably connected tothe rear side of the adjustable header; a cutting mechanism is arranged at the junction part of the adjustable header and the charging device; an adjustable cylinder is further arranged between the adjustable header and the charging device; a vertical tip cutting device is erected in the middle of the charging device; a feeding device is arranged at the front end of a leaf peeling device; the feeding device is spliced to the rear end of the charging device; the charging device and the leaf peeling device are connected by virtue of the feeding device; the charging device, the feeding device andthe leaf peeling device are combined to form an integral sugarcane stem feed mechanism; a track frame used for supporting a telescopic aggregation device is fastened on a wheeled travelling mechanismby means of soldering; and the aim of suspending the telescopic aggregation device behind the discharge outlet of the leaf peeling device is achieved by virtue of the track frame. The sugarcane harvesting machine has the characteristics of compact structure, more flexible movement, stable operation, higher operation efficiency and stronger practicality.

The invention provides a wire harness pipe clamp and a wire harness device. The wire harness pipe clamp comprises a wire harness ring and a hasp, wherein a first accommodating ring is arranged on thewire harness ring, a second accommodating ring is arranged on the hasp, and the hasp is used for being buckled on the wire harness ring, so that the first accommodating ring and the second accommodating ring define an accommodating cavity for fixing wire harnesses; a second boss is arranged on the buckle, a first boss is arranged on the wire harness ring, and a limit groove is formed in the firstboss, and can be matched with the second boss. According to the technical scheme, the hasp is buckled on the wire harness ring, and the accommodating cavity is formed between the hasp and the wire harness ring so as to fix the wire harnesses or wire pipes. Meanwhile, the second boss is arranged on the harness ring and the first boss is arranged on the hasp, so that fastening connection between a plurality of harness pipe clamps is achieved by the cooperative relationship between the second boss and the first boss, and a plurality of groups of wire pipes or harnesses in different directions canbe fixed simultaneously.

The invention discloses a bridge safety warning device. The bridge safety warning device includes a mounting base and a warning device; a groove which is in matching connection with the warning device is formed in a right side wall of the mounting base; handle grooves are arranged in an upper end and a lower end of the groove on the right side wall of the mounting base equally; handles stored in the handle grooves are arranged on an upper end wall and a lower end wall of the warning device; a first slide cavity and a second slide cavity are formed in an upper end and a lower end of the mounting base on the left side of the groove equally; an unlocking slide cavity is formed in the mounting base between the first slide cavity and the second slide cavity; a communication groove passing through the unlocking slide cavity is formed between the left bottom of the first slide cavity and the left top of the second slide cavity; and locking grooves extending downward are formed in right bottoms of the first slide cavity and the second slide cavity. The bridge safety warning device is simple in structure, can save mounting time and effort, and is easy to maintain.

The invention provides a vertical support stress uniform distribution device for building reinforcement engineering, and relates to the technical field of building construction. The device comprises a lower mounting seat; wherein lower mounting seat is mounted on a base plane through expansion bolts; a supporting body which is connected to the upper end face of the lower mounting base in a fastened mode through an adjustable fastening assembly; a protection assembly which is installed at the top of the supporting body, and the protection assembly is located on the outer side of the stress uniform distribution core block; and an auxiliary supporting assembly which is arranged at the top of the supporting main body. The vertical support stress uniform distribution device can effectively protect a matching surface, guarantees good angle adjusting capacity, can observe and monitor the deflection condition of an upper mounting seat, has good supporting capacity and adjusting capacity, is convenient to use and simple to operate, has higher working stability and practicability, and solves the problems that a traditional supporting device cannot well protect the spherical matching surface, the deflection condition of the support is difficult to effectively observe and monitor, so that the deflection of the support is too large.

The invention belongs to the technical field of engineering construction, and in particular relates to a method for improving the building construction efficiency. A steel connecting sleeve used in the method comprises connecting sleeve bodies, a spring, a locking nut, a locking handle, a clamping module and a screw. Face teeth are arranged in a round area on the stepped surface at one end of eachconnecting sleeve body. The other end of the screw is rotatably connected to one end of the locking handle. A rotating shaft hole in the locking handle is eccentrically disposed with the cylindricalsurface. A first cylindrical hole is formed in the end surface at the other end of the connecting sleeve body. The clamping module is arranged in the first cylindrical hole and used for clamping and locking steel bars inserted into the connecting sleeve bodies. Due to the fact that the face teeth are arranged at one end of each connecting sleeve body, and the rotating shaft hole in the locking handle is eccentrically arranged with the cylindrical surface, the angle between two connecting sleeve bodies can be adjusted. The clamping module is arranged in the first cylindrical hole to clamp and lock the steel bars, and finally fastening connection of the two steel bars can be achieved.

The invention belongs to the technical field of smart watch structures, and provides a connection structure of a watch strap and a smart watch, including a first connection component disposed on the end of the first watch band and a second connection component disposed on the end of the second watch band, and a clamping piece that can be rotatably connected to the first connecting assembly and can be clamped to the second connecting assembly, the first connecting assembly comprising a first supporting member connected to the first strap, A positioning member extending outward along the first support member and a first suction member connected to the first support member in a limited position, and the second connection component includes a first suction member connected to the second strap. Two supports, a positioning groove provided on the second support and available for the positioning and connection of the positioning member, and a second limiting connection on the second support and available for connection with the first suction member A suction part; this design can solve the problems that the existing strap clip structure is difficult to fasten and disassemble.

The invention discloses a quick assembling system for a square building and an assembling method thereof. The quick assembling system comprises a bottom plate, the top of the bottom plate is providedwith a top plate, the outer sides of the inner ends of the bottom plate and the top plate are rotationally connected with side plates, and the inner ends of the side plates on the same side are rotationally connected. Through cooperation of the bottom plate, the top plate, the side plates and a clamping assembly, when the device is used, the bottom plate and the side plates, the side plates, as well as the side plates and the top plate are rotationally connected. Accordingly, the device can be folded and compressed downwards, convenience of transporting and storing is greatly improved, and moreover, quick setting up can be achieved; slide rods penetrate into the upper side plates and the lower side plates and achieve an effect of connection rods, moreover, the length of the connection rodsis large, the connection rods can bear larger bending force, and breaking of joints between the upper side plates and the lower side plats is avoided; and meanwhile, clamping rods are in clearance fit with transverse grooves and are in clearance fit with through holes, thus, vertical fastening between the side plates can be achieved, the assembling efficiency is greatly improved, the assembling difficulty is reduced, and the assembling effect is better.

The invention relates to the field of diesel engine detection, in particular to a rapid disassembly and assembly clamp for a water inlet branch pipe of a diesel engine and a using method thereof. Theclamp comprises a pull rod, a first abutting part and a pull rod hook, the pull rod hook is arranged between the first end and the first abutting part, the pull rod hook is rotationally connected to the pull rod through a rotating shaft, and the pull rod can form a lever structure with the rotating shaft as a fulcrum. According to the rapid disassembly and assembly clamp for the water inlet branchpipe of the diesel engine and the using method thereof, the pull rod hook can hook a protruding part of the bottom wall of a diesel engine body, when the pull rod hook hooks the protruding part of the bottom wall of the diesel engine body, the pull rod hook is firmly connected with the diesel engine body to form the fulcrum, and the pull rod forms the lever structure relative to the fulcrum, so that the connection of the water inlet branch pipe of the diesel engine can be realized in a labor-saving manner by utilizing the lever principle.

The invention relates to a key testing device used for a radio frequency electromagnetic field radiated susceptibility test of key type equipment. The key testing device comprises two upright posts, wherein the upright posts are distributed at the two sides of a key of to-be-tested equipment, the lower end of each upright post is connected with the to-be-tested equipment, a clamping slot is formedin the upper end of each upright post, a sliding rod is arranged in each clamping slot, the clamping slots in the two upright posts support the two ends of the sliding rod respectively, a hanging bracket is arranged on the sliding rod, an electromagnetic push rod is arranged on the hanging bracket, the lower end of the electromagnetic push rod is connected with an elastic pressure head, and the elastic pressure head corresponds to a key of the to-be-tested equipment. The key testing device provided by the invention can press the key of the to-be-tested equipment, the key is tested in an anechoic chamber, and whether the key can be normally used under the electromagnetic radiation condition is observed, so that a working environment of the tested equipment is really simulated, and accuracyof a result of the radio frequency electromagnetic field radiated susceptibility test is guaranteed.

The invention relates to an extending fast-loading rock anchorage device. The extending fast-loading rock anchorage device is characterized by comprising an anchor rod, a lower nut, an upper wedge-shaped block and a lower wedge-shaped block, central long holes are formed in the center of the upper wedge-shaped block and the center of the lower wedge-shaped block respectively in the longitudinal direction, the upper wedge-shaped block and the lower wedge-shaped block are respectively provided with an inclined face in the longitudinal direction, the inclined face of the upper wedge-shaped block and the inclined face of the lower wedge-shaped block are oppositely arranged and are corresponding sliding planes, the anchor rod penetrates through the central long hole of the upper wedge-shaped block and the central long hole of the lower wedge-shaped block, the anchor rod is of a step shaft structure with a step circular truncated cone, threads are arranged on the lower portion of the step circular truncated cone of the anchor rod, and the anchor rod is sleeved with the upper wedge-shaped block, the lower wedge-shaped block and the lower nut in sequence. The extending fast-loading rock anchorage device has the advantages that due to the fact that a penetrating hole is communicated with the hollow portion of the upper wedge-shaped block and the hollow portion of the lower wedge-shaped block, when the device is pressed by an anchor bolt screw rod end circular truncated cone, the top end of an extending petal is radially expanded, the wedging function on surrounding materials is generated, and when an anchor bolt is completely tightened, the larger the tensile force borne by the anchor rod is, the more tightly anchoring is.

The invention discloses an end cover assembly. The end cover assembly comprises an end cover body and a filtering part which are fixedly connected, wherein the filtering part is provided with a filter screen base and a filter screen, the end cover body is provided with a cover body and a turnup edge which is provided with a locking part for fixing the filtering part, the locking part and the cover body form a fixing interval for clamping and fixing the filtering part, and the locking part is a protrusion or an annular protruding edge which is sunken from the peripheral face of the turnup edge to the interior of the end cover body. Due to the improvement of the connection mode, damage of remaining welding slag to a compressor can be avoided, the quality of a gas and liquid separator is effectively improved, the service life of the gas and liquid separator is effectively prolonged, and production cost is effectively reduced. On the basis, the invention further provides the gas and liquid separator with the end cover assembly and an assembly device of the end cover assembly.

The invention belongs to the technical field of building material accessories, and discloses a prefabricated concrete member quick connecting system. The prefabricated concrete member quick connectingsystem comprises a prefabricated concrete wall panel with a fixed anchor block, a prefabricated concrete wall panel with a fixed box embedded and a connecting bolt, wherein the connecting bolt penetrates through the fixed box and is connected and combined with the fixed anchor block to realize the fastening connection between the prefabricated concrete wall panel with the fixed anchor block and the prefabricated concrete wall panel with the fixed box embedded. The prefabricated concrete member quick connecting system has the technical advantages of simplifying the prefabricated concrete wallpanel assembling steps, reducing installation errors, being high in practicability and the like.

The invention discloses a blast furnace air inlet pipeline mounting method and a hydraulic system. The blast furnace air inlet pipeline mounting method comprises the following steps: carrying out buttjoint on an air hose flange and a descending pipe flange; enabling a piston rod in a stretching state of a hydraulic cylinder to penetrate through the air hose flange and the descending pipe flange,and connecting a locking piece on the piston rod to prevent the piston rod from be removed out of a threaded hole; controlling the piston rod to shrink to enable the air hose flange and the descendingflange to be in tight coupling and keep the tight coupling state under extrusion of the locking piece and a cylinder block; except the threaded hole allowing the piston rod to penetrate through, enabling bolts to penetrate through other threaded holes of the air hose flange and the descending pipe flange, and enabling the bolts to pre-tighten the air hose flange and the descending pipe flange; controlling the piston rod to stretch out to remove extrusion of the hydraulic cylinder to the air hose flange and the descending pipe flange and enabling the air hose flange and the descending pipe flange to keep the tight coupling state under the connection of the bolts. According to the blast furnace air inlet pipeline mounting method, the hydraulic cylinder compresses two butt joint flanges, sothat both labor and time are saved during the mounting process, and the overhauling efficiency is improved.