68results about How to "Fit tightly and firmly" patented technology

The invention discloses an electronic lock and application of access control system of electronic lock and is mounted on the edge of the door body by a lock box. An electromagnet, a self-locking mechanism and a locking tab are provided in the lock box. The electromagnet is arranged on the one side of the locking tab. The other side of the locking tab is correspondingly provided with a door frame. One end of the self-locking mechanism is connected to one end of the locking tab. The other end of the self-locking mechanism is located in the lock box. The electromagnet can do back and forth movement relative to the locking tab. When the door opens, the electromagnet is controlled by electric power to move a certain distance away from the direction of the locking tab and is free from the restriction of the locking tab. When the door body is pulled, the door frame forces the locking tab to rotate at a certain angle in the forward direction of a first rotating shaft, and the door can be opened. Meanwhile, the self-locking mechanism rotates the lock box out with the opening angle of the door. When the door closes, the door frame first touches the self-locking mechanism. The self-locking mechanism rotates the front end of the self-locking mechanism and meets the tail of the locking tab. The locking tab is rotated through the first rotating shaft to complete the closing action. The electronic lock and the application of access control system of electronic lock have the advantages of simple structure, strong generality, safety and convenience.

The invention relates to an environment-friendly anti-wave plastic aquiculture fish raft. The environment-friendly anti-wave plastic aquiculture fish raft is characterized by comprising more than two groups of buoyancy units, wherein each group of buoyancy unit comprises a pair of supporting rods which are parallel to each other, more than one plastic floating body which is erected and fixedly connected with the lower part of the two supporting rods, and a plastic walking road platen which is erected and fixedly connected with the upper part of the supporting rods and/or floating bodies; and the adjacent buoyancy units are connected and fixed through a supporting, fixing and connecting device. The invention aims to provide the environment-friendly anti-wave plastic aquiculture fish raft which not only has a steady structure, but also has a good anti-wave effect.

The invention provides a detachable spring coil which includes a guide-in sheath, a pushing system and a spring coil assembly. The pushing system is located in the guide-in sheath and includes clamps.By optimizing the shape and number of the clamps and arranging a protrusion part at the proximal end of a spring coil body, the spring coil body is more tightly and firmly through the clamp fixing cooperation in normal times, so that the detachable spring coil can stably deliver the spring coil body to the position, needing thrombus occlusion, in a human body, then the spring coil body can be easily detached, instant detaching can be achieved during detaching, the operating method is simple and convenient, and damage to blood vessels is avoided; a mechanical detaching system is high in controllability and good in development on an embolization spring coil before detaching, and instant detaching can be achieved; and compared with a lock-catch-type detaching method, the detachable spring coil can enable the spring coil body to be easier to be pushed, damage to the spring coil body is avoided, and when the spring coil body is pushed out of a catheter, the catheter is not damaged when a push rod is retracted.

The invention discloses a crane hook that can be opened and closed automatically. There is a vertical slideway in the side, a compression spring is arranged in the vertical slideway, a slider is provided on the top of the compression spring, the slider is connected with an anti-off rod, and the bottom end of the compression spring is connected to There is a steel wire, the bottom end of the inner wall of the hook point, and the top of the steel wire is provided with a steel sheet in a concave shape and a tension spring that is located at both ends of the steel sheet and is connected with the steel wire. Nested in the groove opened by the hook point. The hook uses the principle of spring compression and no-load reset to realize the automatic up and down movement of the anti-loosening rod and the automatic opening and closing of the hook body, saving manpower, high work efficiency, good anti-decoupling performance, light weight and high strength. High, long service life, good practicability, worthy of widespread promotion.

The invention discloses a module connector and an assembling method thereof. The module connector comprises an insulation body provided with a plurality of installing grooves, a conductive terminal arranged in the insulation body and a plurality of LEDs arranged in the installing grooves of the insulation body, wherein the conductive terminal comprises a first conducting pin, the LEDs are provided with light-emitting parts and pins extending from the light-emitting parts and inserted into the installing grooves, when the pins of the LEDs are inserted into the installing grooves, the first connecting pin is extruded and matched with the pins of the LEDs. The LEDs are in a passive interference state during the process so as not to be damaged. Meanwhile, the module connector is easy to install and operate. The LEDs are closely and reliably matched with the conductive terminal.

The invention discloses an adjusting method of the range of a pipette. The adjusting method comprises the following steps: setting a preset range value; acquiring an image of the current range value of the pipette; recognizing the range value in the image; and rotating a range rotary disc according to the current range value and the preset range value. The range of the pipette is adjusted to the preset range value by acquiring the image of a scale observation window of the pipette, recognizing the range value of the current pipette and then rotating the range rotary disc by a specified angle,so that convenience is brought for following direct operation and use. The application also provides an adjusting device of the range of the pipette applicable to the above adjusting method of the range of the pipette.

The invention discloses a hanging basket for quenching. The hanging basket comprises a hanger and a basket, wherein the hanger comprises a hanging scaffold welded with a hanging ring, at least three steel rods extending downwards vertically are uniformly arranged along the circumferential direction at the edge of the hanging scaffold, the bottom end of each steel rod is provided with a hook, and the opening direction of each hook keeps consistent along the clockwise direction; the basket comprises a basket bottom and a basket wall extending upwards from the periphery of the basket bottom, at least three lugs matched with the hooks are uniformly welded along the circumferential direction on the basket wall, and the hooks are hung on the lugs. Compared with the prior art, the hanging basket has the advantages that people do not need to close fire sources during the quenching process of steel products or moulds, thus the safety is improved; a great deal of steel products or moulds are placed in the basket for disposable quenching, so that the production efficiency is improved, and the human and material resources are saved.

The invention provides a mask for machining a convex hemisphere of a gyro motor and a machining method of the mask, and solves the problem that the performance of the gyro motor is influenced due to the fact that the machining precision of the convex hemisphere cannot be guaranteed by an existing machining tool of the convex hemisphere. The mask for processing the convex hemisphere of the gyro motor comprises a mounting sleeve, a hemisphere shell and an extension sleeve, the mounting sleeve, the hemispherical shell and the extension sleeve are sequentially and coaxially arranged, and a plurality of logarithmic curve spiral holes matched with the logarithmic curve spiral grooves of the convex hemisphere in shape are formed in the hemispherical shell in the circumferential direction; the invention provides a processing method of a mask for processing a convex hemisphere of a gyro motor. The processing method comprises the following steps: step 1, primary processing; secondly, a positioning mandrel and a positioning clamp are machined; step 3, processing an outer spherical surface; fourthly, the logarithmic curve spiral hole is machined through numerical control milling; fifthly, burrs on the outer spherical surface are removed; step 6, separating the mask workpiece from the positioning mandrel; and seventhly, burrs on the inner spherical surface are removed.

The invention relates to a lifting rod structure, which comprises an upper rod, a lower rod, at least one positioning assembly, a locking assembly and an adjusting piece, wherein the positioning assembly is arranged in the upper rod, the positioning assembly and the upper rod move in the lower rod, one part of the positioning assembly is contained in the lower rod to position the upper rod, the locking assembly is arranged on the lower rod, the adjusting piece is arranged on the locking assembly and is used for adjusting the locking assembly, the positioning assembly can be moved out of the lower rod through the locking assembly, and the upper rod is engaged from the blockage of the positioning assembly. The invention also provides a lamp using the lifting rod structure. The lifting rod structure has the advantages that the structure is simple, the operation is convenient, the upper rod and the lower rod are stably and tightly matched, the sliding is avoided between the upper rod and the lower rod, and the stability of the lamp during use is ensured.

The invention discloses a noise-free elevator idler wheel assembly. The noise-free elevator idler wheel assembly comprises a hub made of a nylon material of 49.0-70.0 parts by weight, a polyurethane elastic tire bead formed on the surface of the hub, and polyformaldehyde friction plates located on the two sides of the hub. The hub is provided with an annular outer wall face, an annular inner wallface and two side faces for connecting the annular inner wall face and the annular outer wall face; the two side faces of the hub are provided with grooves matched with the polyformaldehyde friction plates correspondingly; the grooves are formed in the mode of being sunken from the side faces; and each groove comprises an open groove and a clamping groove located in the inner side of the open groove. The hub is made of the nylon material of 49.0-70.0 parts by weight, the polyformaldehyde friction plates are adopted in a matched mode, a matched structure of the friction plates and the hub is improved, thus the friction plates and the hub are bonded more tightly and firmly, noise is reduced, and the polyformaldehyde friction plates are better in performance, more environmentally friendly andlower in cost.

Simple structure, firm parts combination, long service life textile bobbin, with center tube and side discs, both ends of the center tube have necks with shrinking outer diameter and shoulders at the ends of the necks, and the side discs are sleeved On the neck of the center tube, the inner edge of the center hole of the side plate is pressed against the shoulder of the center tube, the direction of the outer opening of the center hole of the side plate has a bell-shaped tapered surface, and the neck edge part of the center tube The eversion ring buckle is formed by the eversion, and the eversion ring buckle is pressed against the bell-shaped conical surface of the center hole of the side plate. The two ends of the center pipe have internal thread sections, and the internal thread sections are matched with screw sleeves. The outer end has a turning edge, the inner wall of the inner end of the threaded sleeve has a threaded sleeve shoulder, the turning edge of the outer end of the threaded sleeve is embedded with a joint shoulder that is pressed against the center hole of the side plate, and the inner wall of the threaded sleeve is combined with a center hole. The inner plug of the hole, the outer edge part of the inner end face of the inner plug is pressed against the shoulder of the screw sleeve. The present invention is assembled on a textile machine for the weaving process.

The invention discloses a housing assembly of a food waste disposer and the food waste disposer. The housing assembly comprises an annular retaining ring, a connecting tube and an elastic connecting ring. First injection holes are formed in the peripheral wall of the annular retaining ring; the connecting tube is arranged opposite to the annular retaining ring, and second injection holes are formed in the peripheral wall of the connecting tube; the elastic connecting ring is elastically connected between the annular retaining ring and the connecting tube through secondary injection molding, the annular retaining ring and the connecting tube are spaced apart and in sealed connection through the elastic connecting ring, first injection parts and second injection parts are integrally formed on the elastic connecting ring, the first injection parts are injection molding pieces which formed by injecting fluids into the first injection holes and then solidifying the fluids, and the second injection parts are injection molding pieces which formed by injecting fluids into the second injection holes and then solidifying the fluids. According to the housing assembly of the food waste disposer, there is no actual direct contact between the annular retaining ring and the connecting tube, the vibration and noise can be effectively reduced, the structure is integrated, fitting is reliable, the contact is close, and the sealing performance is good.

The invention discloses a switchboard with a detachable cover plate. The switchboard comprises a base and a cover plate, wherein the base comprises a first connecting plate, a second connecting plate and a third connecting plate; the first connecting plate is parallel to the third connecting plate; the second connecting plate is vertical to the first connecting plate and the third connecting plate; the cover plate comprises a top plate and a back end plate; the back end plate is vertically connected with the top plate; and the widths of the first connecting plate and the top plate are the same as the width of the switchboard. The switchboard with the detachable cover plate disclosed by the invention has the advantages that the base and the cover plate, which are matched with each other, are arranged, and the matching is right and firm; and meanwhile, the switchboard with the detachable cover plate is convenient to detach.

The invention discloses a spliced water tank with a displacement resisting structure. The spliced water tank comprises a water storage tank and a water supply tank. The water storage tank is used forstoring water and can supply the water to the water supply tank. A positioning flange is arranged on the water storage tank. The water supply tank is arranged in the water storage tank. The water supply tank is formed by splicing of at least two bodies. The bodies are recessed inwardly at the splicing joints to form positioning grooves matched with the positioning flange. The spliced water tank has the advantages that the water supply tank is fastened into the water storage tank conveniently through the positioning grooves and the positioning flange, and the water supply tank and the water storage tank are combined tightly and firmly, so that mutual displacement caused by non-firm combination between the water supply tank and the water storage tank during moving and transporting of a plantplanting device is avoided, the water can be prevented from overflowing from the water storage tank or the water supply tank effectively, and service life of the whole device is prolonged; the watertank is designed as a spliced type, and the water supply tank is mounted or taken down conveniently, so that the water supply tank or the water storage tank is convenient to clean, maintain or repair.

The invention provides a firm tire bolt. In actual use, a screw of a bolt first passes through corresponding wheel holes of a wheel shaft connecting part and a hub connecting part of a tire, a supporting sleeve sleeves the screw, the screw is locked by tightening a nut; when the nut is tightened, the abutting end of an abutting sleeve abuts against and is connected with a second protruding portionof an inner sleeve, a cone column section abuts against a first protruding portion of the inner sleeve, an initial state of the supporting sleeve is that the first protruding portion and the second protruding portion of the inner sleeve are cocked up; after the nut is tightened, the first protruding portion and the second protruding portion are cocked up more significantly and abut against holesin the wheel shaft connecting part and the hub connecting part respectively, so that balance supporting is performed on the wheel shaft connecting part and the hub connecting part, and the breakage cause by the generation of shear stress due to the shaking of the screw in the hole in the tire rotating process is avoided.

The invention provides a cotton packing machine with a box removing pressurizing function and a box removing method. The machine comprises a main pressure oil cylinder assembly, box removing cylinders, a main pressure cross beam, box removing discs, cotton box lifting lugs, a cotton box, a rotating disc and a lower cross beam assembly, wherein two driving devices are arranged in the lower cross beam assembly, and the left and right ends of the rotating disc are provided with two locking holes by taking a rotating shaft as an axis. In the box removing process, the cotton box is moved upwards through oil cylinders, and then cotton and the cotton box are preliminarily separated; and after the oil cylinders finish the stroke, the box removing cylinders continue to move upwards, the cotton andthe cotton box are thoroughly separated, and the box removing process is completed. According to the machine and the method, box removing of the cotton packing machine is simple, the stress of the cotton box lifting lugs is reduced, and the problem that the cotton box lifting lugs are damaged due to overlarge impact force is avoided.