23results about How to "Achieve initial fixation" patented technology

This utility model discloses a dart impact testing machine for measuring material properties, comprising: a base with a mounting groove on its surface, a negative pressure chassis slidably inserted into the inner wall of the mounting groove, a mounting unit for limiting the position of the negative pressure chassis on the inner wall of the mounting groove, a negative pressure groove on the top of the negative pressure chassis, a pressure plate above the negative pressure chassis, a negative pressure unit, and a first driving unit, wherein the negative pressure unit applies negative pressure to the inside of the negative pressure groove. In this utility model, by creating a lifting groove on the surface of the base, and with a lifting block slidably inserted into the inner wall of the lifting groove, during use, the user rotates a threaded rod, which drives the lifting block, threaded onto the surface of the threaded rod, to slide along the inner wall of the lifting groove, thereby controlling the height of the impact dart and thus controlling the impact force.

The utility model discloses a kind of sign panel mounting structures of fire emergency lamps, including fire emergency lamps shell and the installation slot for installing sign panel being opened in fire emergency lamps shell, further include, suction groove, at least one and opened in the inside of installation slot;Suction strip, same as suction groove, for fixing sign panel, and with suction is combined and set in the inside of suction groove;The inside of suction groove is provided with magnet, the inside of suction strip is provided with iron sheet, the surface of suction strip is smeared with the glue that sign panel is bonded, installation slot and sign panel are all provided with the bevel for preventing the installation position error of sign panel;By the suction mechanism of suction groove and suction strip, the preliminary fixation of sign panel is realized, without artificial continuous pressing when installing, simplify operation process.Through the bevel positioning mechanism on installation slot and sign panel, avoid panel installation misplacement, improve installation accuracy.

This utility model relates to a prefabricated balcony structure and railing. The prefabricated balcony structure includes a main unit, a base unit, a snap-fit ​​unit, and two docking units. Its advantages are: the main unit and base unit provide an installation benchmark for the railing structure, ensuring basic alignment without repeated fine-tuning, facilitating subsequent installation and fixing; the snap-fit ​​unit engages with the railing structure and base unit via pre-set snap-fit ​​blocks, achieving initial fixing of the railing structure, significantly reducing the cyclical operation of "trial installation-disassembly-re-fixing" in traditional installation, making the installation process simpler and more efficient; the base unit and snap-fit ​​unit work together to restrict the horizontal displacement of the railing structure from the bottom; and the docking units rigidly connect to the railing structure from the side or top, forming a double fixing of "bottom snap-fit ​​+ side or top docking," distributing the stress on the railing structure and preventing stability loss due to single-point loosening after long-term use.

The utility model relates to the technical field of biodiversity observation, in particular to a biodiversity observation device convenient to fix, which comprises a fixed base, a support frame, an adjusting mechanism, an observation module and a fixing assembly. The fixed base is in threaded connection with a ground nail through a ground nail groove to achieve primary fixation, and the anti-overturning capacity of the fixed assembly is enhanced through a telescopic rod and a fixed plate; the adjusting mechanism can flexibly adjust the height and angle of the observation module. Through the design of the drain hole, the protective cover, the sealing ring and the like, the device adapts to complex terrains and underwater environments, and long-term stable deployment is ensured. The device can be quickly fixed and flexibly adjusted, the observation requirements in various scenes are met, and the adaptability and reliability of the device are improved.

This utility model relates to the field of building engineering technology and discloses a vibration-damping beam for building construction. It includes a main body of the vibration-damping beam, a first fixing block fixedly connected to the bottom surface of the main body, a first shock absorber rotatably connected to the left side of the first fixing block, a connecting member rotatably connected to the left side of the first shock absorber, a movable column fixedly connected to the bottom of the connecting member, a positioning column fixedly connected to the top of the connecting member, a second shock absorber rotatably connected to the left side of the connecting member, a hollow column slidably connected to the bottom end of the movable column, and a support column fixedly connected to the bottom end of the hollow column. In this utility model, through the combined action of a compression spring, a movable column, a support column, and a connecting member, the compression spring can drive the movable column to move up and down. The movable column transmits the energy generated by vibration to the first and second shock absorbers, enabling the main body of the vibration-damping beam to achieve multi-dimensional force synergy to reduce impact, thereby exhibiting excellent vibration damping performance.

The utility model relates to the technical field of valves, in particular to a high-pressure-bearing iron sheet buckle type plastic ball valve. According to the technical scheme, the valve comprises a valve body, a mounting cavity used for mounting is formed in the valve body, a first annular groove used for clamping is formed in the inner wall of the mounting cavity, a clamping groove is formed in the mounting cavity, an iron buckle used for reinforcing is arranged in the clamping groove, a valve element used for controlling water flow is arranged in the mounting cavity, and the valve element is arranged in the valve body. A first annular groove used for containing an iron buckle is formed in the outer wall of the valve element, a second annular groove used for containing the iron buckle is formed in the outer wall of the valve element, a chamfering protrusion is arranged on the outer portion of the valve element and matched with the first annular groove, and a first installation groove and two second installation grooves are formed in the outer portion of the valve element. The valve ball can be preliminarily fixed, the axial force borne by the inverted buckling structure can be shared through the arrangement of the iron buckles, the situation that the valve element axially displaces and even sprays out due to fluid impact or vibration is prevented, and the reinforcing purpose is achieved.

The invention relates to the technical field of cooling fan mesh enclosures, in particular to a cooling fan front mesh enclosure structure free of tool disassembly and washing, which comprises a mounting cover, a mesh enclosure frame is inserted into an inner ring opening of the mounting cover, a mesh plate is mounted at the inner ring opening of the mesh enclosure frame, an outer ring groove is formed in the outer ring surface of the mounting cover, and a plurality of clamping handles are inserted into the surface of the outer ring groove. The clamping handle penetrates through the mounting cover and then is inserted into the outer ring surface of the mesh enclosure frame, a limiting cover is arranged in the outer ring groove in a sleeving manner, and the limiting cover prevents the clamping handle from retreating; the beneficial effects are that through the ingenious structural design, tool-free dismounting and mounting of the mesh enclosure frame and the mesh plate are realized. When the mesh enclosure frame is dismounted, the mesh enclosure frame can be pulled away from the embedding groove only by pulling away the limiting cover from the outer ring groove, rebounding the rubber ring to pull the clamping handle to reset and pulling away the end part of the clamping handle from the clamping groove; during installation, the mesh enclosure frame is pushed into the embedding groove and then sleeved with the limiting cover to push the clamping handle to be inserted into the clamping groove, and then installation can be completed.

The utility model discloses a rubber water line device part processing special lathe, including lathe and the cutter rest with angle rotation function, be equipped with handle on the cutter rest, the handle is used for the locking of cutter rest rotation angle, be equipped with reference frame on the cutter rest, the reference frame is four -sided, be equipped with fixed plate on the reference frame, the below of fixed plate is equipped with pre -press mechanism, the pre -press mechanism cover sets on the reference frame, be equipped with locking device on the reference frame, locking device with pre -press mechanism is connected, locking device with pre -press mechanism all cover sets on the cutter rest. The utility model solves the problem of the precision reduction caused by the deviation of the cutter rest in the process of installing the cutter in the prior art.

This utility model discloses a double-sided welding fixture, relating to the field of welding fixture technology. The double-sided welding fixture includes an upper clamping plate, a lower clamping plate, and a fixing component. The upper clamping plate has a first groove with a first solder hole within it. The lower clamping plate is movably engaged with the bottom of the upper clamping plate. The lower clamping plate has a second groove with a second solder hole within it. The fixing component is disposed on the upper and lower clamping plates and is used to fix them in place. This double-sided welding fixture uses a strong magnet; under the magnetic force of the magnet, the upper and lower clamping plates can be initially fixed. This fixing method is simple and quick to operate and can ensure relative stability of the fixture during the welding process to a certain extent.

This invention discloses a rotary welding device and method for sewage pumps, relating to the field of sewage pump welding technology. It includes a worktable, a rotating base, a positioning mechanism for fixing the sewage pump body and flange, and a welding assembly with a welding head. The rotating base is rotatably positioned above the worktable, the positioning mechanism is mounted on the rotating base, and the welding assembly is mounted on the worktable. Two sets of positioning mechanisms are symmetrically arranged and slidably positioned above the rotating base. Each positioning mechanism includes a lifting base, a clamping plate, and an end plate. The lower end of the lifting base is slidably positioned above the rotating base, and the end plate is rotatably positioned at the upper end of the lifting base. This invention achieves initial overall fixation of the sewage pump body and flange by using the positioning mechanism to position and spot weld them. Then, the welding position is flipped upwards, facilitating double-sided welding of the sewage pump body and flange by the welding assembly. This eliminates the need to reposition the sewage pump body and flange after welding one side, thus improving welding efficiency.

This application relates to the field of structural construction, and in particular to a prefabricated beam-column structure and its construction method. The prefabricated beam-column structure includes a structural column, a protruding column, multiple limiting rods, a drive disc, and a crossbeam. The protruding column is connected to the periphery of the structural column. Multiple first arc-shaped grooves are formed at the ends of the protruding column away from the structural column, and the ends of the limiting rods are slidably connected to the first arc-shaped grooves. The drive disc is rotatably connected to the ends of the protruding column away from the structural column. Multiple second arc-shaped grooves are formed through the surface of the drive disc. When the drive disc rotates relative to the protruding column, the multiple limiting rods converge or diffuse along the extension directions of the first and second arc-shaped grooves. A limiting groove is formed at the end of the crossbeam. The limiting groove allows multiple limiting rods to pass through. A limiting ring is provided on the inner wall of the limiting groove. A slot is formed on the side wall of the limiting rod for the limiting ring to engage. A limiting mechanism for fixing the rotational position of the drive disc is provided on the side wall of the drive disc. This application improves the problem of inconvenient assembly and disassembly of beam-column structures.

The utility model discloses a dry-type wire outlet rod with a protection effect, which comprises a rod body, the rod body is provided with a wiring through hole, an inlet of the wiring through hole is provided with an expansion part, the expansion part is provided with a lacing piece, the inner wall of the lacing piece is provided with at least one O-shaped sealing ring, and the inner wall of the lacing piece is provided with at least one sealing ring. One end of the rod body is provided with a connecting part, the connecting part is provided with a detachable pressing piece, a spring is arranged in the pressing piece, and downward acting force is applied to the lacing piece, so that the lacing piece shrinks towards the center direction and is used for clamping and fixing a wire. Preliminary fixation of the wire is achieved through the positioning bolt, along with firm connection of the pressing piece and the connecting part, the acting force of the spring enables the tightening piece to be tightly attached to an insulating layer of the wire, external humid air permeation is blocked, continuous clamping force is applied to the wire, and dual fixation is achieved; the scheme has the advantages of good sealing effect, high connection stability and simplicity and convenience in operation.

The utility model provides an alignment device for electrical installation engineering. The alignment device for the electrical installation engineering comprises a connector, two fixing columns, an outer ring sleeve and a locking ring, the two fixing columns are symmetrically arranged on the two sides of the connector, the outer ring sleeve is arranged outside the fixing columns and is in threaded connection with the connector for fixation, and the locking ring is in threaded connection with the outer ring sleeve and is located on the side, away from the connector, of the outer ring sleeve. A limiting groove is formed in the fixing column, a limiting ball is arranged in the limiting groove, the sliding sleeve is located on the outer side of the limiting groove, a limiting ramp is arranged on the inner surface of the sliding sleeve, the closer the limiting ramp is to the connector, the larger the thickness is, and the limiting ball is located between the limiting ramp and the limiting groove. The limiting ramp presses the limiting ball into the limiting groove. The alignment device for the electrical installation engineering provided by the utility model has the advantage that the branch wires are prevented from falling off from the terminals during subsequent operations such as bolt tightening.

The present application relates to the technical field of evaporation separation equipment, and specifically relates to a spherical vacuum concentration tank for animal bone marrow extraction, which at least comprises a concentration tank body, a stirring shaft system and a stirring paddle assembly are arranged in the middle of the concentration tank body; the stirring paddle assembly comprises a lower paddle assembly, a cross rod assembly and an automatic opener. The lower paddle assembly comprises an arc-shaped paddle arm, a lower insertion part and an upper hinged part; the cross rod assembly comprises a swing straight rod, a buckling convex block and a hinged cylinder. The torsion releaser comprises a torsion assembly and a clutch assembly. The stirring paddle assembly of the spherical vacuum concentration tank can be easily put into the concentration tank through a manhole, and the stirring paddle assembly is convenient to disassemble and assemble and easy to operate: the hinged cylinder of the cross rod assembly can be sleeved on the hinged circular shaft from front to back, the axial position limiter limits the cross rod assembly so that it cannot move back and forth along the axial direction, the torsion releaser drives the cross rod assembly to open upward, and the buckling convex block and the buckling groove are used for fixing.

This utility model discloses a connection structure for precast floor slabs, belonging to the field of precast floor slab connection technology. It includes a precast beam and a precast wall panel body. The precast beam has a slot and a circular hole inside, and the slot and the circular hole are connected. A movable plate is slidably connected inside the slot. A first spring is fixedly connected to one side of the movable plate, and the other end of the first spring is fixedly connected to the inner wall of the circular hole. An insert block is fixedly connected to the side of the precast wall panel body near the precast beam. Through the cooperation of the insert block, slot, circular hole, first spring, and limiting mechanism, when the insert block is inserted into the slot, the limiting insert plate will be pushed into the limiting groove by a second spring, achieving axial limiting of the insert block and effectively preventing the insert block from detaching. This achieves initial fixing of the precast beam and the precast wall panel body. Further fixing with pre-embedded bolts significantly improves the overall connection strength and reliability.

The utility model discloses an automobile front grille assembly convenient to disassemble and assemble. The automobile front grille assembly comprises a grille body, a grille buckle and a quick connecting mechanism. The quick connecting mechanisms are arranged at the left end part and the right end part of the grille main body, when the grille main body is mounted, the decorative plate is firstly opened, then the grille main body and a grille mounting position of an automobile are buckled and mounted through the grille buckle, the preliminary fixation of the grille main body is realized, and then the rotary knob is twisted to switch the cam lock into a locking state, so that the grille main body is mounted. At the moment, the cam lock drives the spring bolt to turn over and be buckled into the inner side of the hanging buckle, so that the grille body is hooked, final fixing of the grille body is achieved, when the grille body is disassembled, the decorative plate is opened at first, then the knob is twisted to switch the cam lock into the open state, the cam lock drives the spring bolt to turn over to leave the inner side of the hanging buckle, and the grille body is disassembled. The grille body can be detached from the front portion of the automobile by releasing the connection between the grille body and the hanging buckle, assembling and disassembling are easy and fast, and dependence on external tools is greatly reduced.

The utility model belongs to the field of communication engineering, particularly relates to a fiber-to-the-home switching connection device, and aims to solve the problems that the existing switching equipment main body is inconvenient to fix in a wall-mounted manner during use and can only be adsorbed and placed through a sucking disc, so that the fixing requirement cannot be met when the switching equipment main body is used in different scenes; according to the technical scheme, the switching device comprises a switching device body, a mounting plate is fixedly arranged on one side of the switching device body, and a plurality of auxiliary wire plugging holes and a plurality of main wire plugging holes are formed in one side of the switching device body. When the wall-mounted switching equipment is used, the switching equipment main body can be stably hung and fixed on a wall body, so that the wall-mounted installation is convenient, the installation range function is greatly increased, the fixing requirements can be favorably realized according to the use of different scenes, the application effect and the convenience degree are improved, and meanwhile, the switching equipment main body can be covered and decorated; and the aesthetic property of the device is improved.

The application discloses a rapid pipeline pressure sealing device and a sealing method, and is applied to an oil and gas pipeline with strip crack leakage or point leakage; a hollow cylindrical cover body is arranged on a leakage position of the oil and gas pipeline, a closed leakage cavity is formed between the middle part of the hollow cylindrical cover body and the oil and gas pipeline; the hollow cylindrical cover body is spliced by two arc cover plates, connecting edges are arranged at the abutting positions of the two arc cover plates, the abutting surfaces of the two connecting edges are sealing planes, and the two abutting connecting edges form a strip-shaped structure; end face covers are fixed at two ends of the hollow cylindrical cover body, limiting squares are arranged on the end face covers, and the strip-shaped structure is arranged in the limiting squares; a sealing flow channel is arranged at the joint surface of the end face cover and the hollow cylindrical cover body, and the sealing flow channel is formed by the end face cover, the hollow cylindrical cover body and the oil and gas pipeline; oil-resistant sealing glue is injected into the sealing flow channel to form a sealing structure; and a pressure relief structure is connected to one of the arc cover plates of the hollow cylindrical cover body and is communicated with the leakage cavity. The application is suitable for pipeline sealing operation of pipelines with different flatnesses and can rapidly realize sealing operation of the pipeline with strip crack leakage.

This utility model relates to the field of motor technology, and more particularly to a rotor assembly and an axial flux motor. The rotor assembly of the axial flux motor includes a rotor disk, multiple permanent magnets, and a radial stop. The rotor disk has multiple receiving through holes arranged circumferentially around the axial direction. Each permanent magnet is installed in one receiving through hole. The radial stop is sleeved on the axial outer periphery of the rotor disk and has a radial stopping structure. The radial stopping structure and the inner wall of the receiving through holes together stop the radial outer wall of the permanent magnets, thereby improving the radial constraint on the permanent magnets and enhancing the structural strength of the rotor disk.

The utility model relates to the technical field of hand hole cover plates, in particular to a novel hand hole cover plate structure of a steamer vulcanizing machine, which comprises a connecting seat and a cover plate body, a plurality of first mounting holes are uniformly formed in the upper surface of the connecting seat, and a plurality of second mounting holes are uniformly formed in the surface of the cover plate body. A connecting structure is arranged on the inner side of the first mounting hole and comprises a plug pin matched with the first mounting hole and the second mounting hole in size, the lower end of the plug pin is fixedly connected with a stop block, a plurality of clamping grooves are evenly formed in the side wall of the plug pin, and the side wall of the plug pin is slidably connected with a limiting ring; and a sliding rod is slidably connected to the interior of the limiting ring, a clamping block is fixedly connected to the end, located on the inner side of the limiting ring, of the sliding rod, and the size of the clamping block is matched with that of the clamping groove. Compared with traditional bolt connection, the connecting structure is simpler and more convenient to operate, and the problem that threaded holes are damaged is solved.

The utility model discloses a kind of earth pressure monitoring equipment in pipe jacking construction process, including mounting sleeve, mounting seat and vibrating wire type earth pressure sensor;The outer wall of mounting sleeve is provided with outer thread A, the top of mounting sleeve is integrally formed with the limiting block of greater diameter than mounting sleeve, clamping knob is installed in the sleeve below mounting sleeve;Mounting sleeve inner wall is provided with internal thread, the outer wall of mounting seat is provided with outer thread B, mounting seat is screwed in mounting sleeve, and outer thread B and internal thread are engaged with each other, mounting seat top is fixedly welded with mounting sleeve, vibrating wire type earth pressure sensor is detachably installed in mounting sleeve.The utility model can be quickly completed installation and disassembly, effectively improve construction efficiency and be conducive to equipment reuse, and sensor installation position can be flexibly adjusted, replace conveniently, can accurately monitor earth pressure and reduce downtime caused by sensor failure, guarantee pipe jacking construction smoothly.

A kind of lightweight detachable high-pressure equalizing ring.The present application relates to the technical field of equalizing ring.The assembly is assembled on mounting column, including ring body, a pair of mounting rods are arranged on the inner wall of the ring body;Clamp piece, two clamp pieces are clamped on the outer side of the mounting column and locked by first bolt;Lock block, two lock blocks are correspondingly arranged on two clamp pieces, the side of the lock block towards mounting rod is provided with limiting slot extending in vertical direction, the mounting rod is adaptively placed in the limiting slot and locked by second bolt.In the present application, the installation efficiency can be improved and the firmness of installation can be improved.