98results about How to "Avoid accidental breakage" patented technology

The invention discloses a worm wheel-worm lead screw transmission type two-way stretch test machine, which is characterized by consisting of a rack, a loading power module, a sensor module and a clamping module, wherein the entire loading power module is fixedly arranged on the rack, two clamping heads of the clamping module penetrate through two stretch movement blocks of the loading power module respectively, and a dynamometer and a displacement sensor in the sensor module are also fixed on the loading power module; and after a test sample is fixed on the clamping heads, a motor in the loading power module rotates to drive a worm wheel and a worm, the worm wheel drives two reversed screw-thread ball screws respectively to further drive the two stretch movement blocks to move in opposite directions so as to achieve stretch or compression of the test sample, and stress values and displacement amounts of the test sample during stretching are acquired respectively by virtue of the dynamometer and the displacement sensor in the sensor module. The two-way stretch test machine disclosed by the invention can achieve stretch of small-size samples of a material, thereby assisting research of mechanical properties of a micro-nano structure of the material.

A single use rigid package containing pharmaceutical compositions which protects tablets, capsules, soft shell pills against hard transporting conditions and undesired rupture. The package comprises at least four sections made from a single sheet foldable into a folded configuration. At least two sections are carrier sections pivotally connected to each other and each comprising cavities for housing pharmaceutical compositions. Two sections are end sections not comprising cavities, the end sections being foldable to adjacent and at least partly covering the carrier sections when the sheet is folded so as to protect the carrier sections. The package allows for personal transportation, e.g. in a pocket, and it is easy and convenient to open for people of all levels of ability and dexterity. Its design allows for transport as standard mail withstanding temperature fluctuation, vibrations and shocks, mechanical pressure and variation in atmospheric pressure which may occur during transport.

The invention discloses a sensing head of an all-fiber current transformer. Grooves are respectively formed in an upper cover of the sensing head and a lower cover of the sensing head; a sensing optical fiber, an all-fiber one-fourth wave plate and an optical fiber end surface reflecting mirror form an optical fiber sensing part of the all-fiber current transformer by a welding mode; the optical fiber sensing part is uniformly wound on a sensing framework in a spiral manner; the sensing framework wound with the optical fiber sensing part is placed in the groove of the lower cover of the sensing head and integrally packages the upper cover of the sensing head with the lower cover of the sensing head; a lead head which is internally provided with a lead hole is processed in the upper cover of the sensing head; and a polarization-preserving optical fiber is used as a lead-out end of the sensing head of the all-fiber current transformer, is partially connected with the optical fiber sensing part and is led out of the lead hole. According to the sensing head disclosed by the invention, various negative influences such as linear birefringence, Verdet constant temperature effect and one-fourth wave plate phase delay temperature effect of the optical fiber sensing part can be effectively eliminated.

A floating fastener mounting structure and method is disclosed to include a metal panel member defining a convex wall portion and a mounting through hole at the convex wall portion, a mounting socket defining a center hole, an annular step around the outer perimeter and an annular locating groove around the outer perimeter and at the bottom side of the annular step and being riveted to the metal panel member to force the annular locating groove into engagement with the convex wall portion tightly, a spring member mounted in the mounting socket, and a lock screw floatably supported on the spring member in the mounting socket for detachably locking the metal panel member to an external metal panel member.

The invention relates to a torque force spanner provided with a control unit, which comprises a body unit, a handle unit which is rotatably arranged on a pipe part and provided with at least one actuating hole and one clamping hole, a control ring, an elastic element arranged between the control ring and the handle unit, and at least one control unit, wherein the pipe part is provided with a plurality of shallow grooves; the control ring is provided with an inner annular surface, at least one abdicating groove which is concavely arranged on the inner annular surface and two positioning grooves which are concavely arranged on the inner annular surface; and the elastic element is provided with a first end part which presses a limit piece on the pipe part, a clamping part which is clamped with the clamping hole and a positioning part. When the control ring is at a first position, the abdicating groove is corresponding to the first end part, the inner annular surface is away from the first end part, and the positioning part is connected with one of the positioning grooves; and when the control ring is at a second position, the abdicating groove is separated from the first end part, the inner annular surface is close to the first end part, and the positioning part is connected with the other positioning groove. Through the rotary switch of the control ring of the control unit, the torque force spanner not only has the advantages of convenient and fast operation and definite positioning, but also can prevent the control unit from accidentally breaking.

A box is positioned and fastened in the interspace (40) between four cups of a food pack (P), the four cups (4) being arranged in two adjacent rows (R1, R2). The box body (1) is provided with two ends respectively having an end cover (2a), wherein at least one said end cover (2a) is provided with protruding parts (3) at its edges. The box, which is positioned in a staggered manner with respect to the cups, can be fastened to the multi-joint packing cups without the help of external means and is used for loading small articles, such as spoons and little gifts for promotion. The box is adapted to various kinds of multi-joint packing cups.

The invention discloses a vertical two-side tire ring cutting machine. A fixed box and a movable box are arranged on a base; the upper part of the fixed box is provided with an expansion rack assembly; the expansion rack assembly is driven by a swing drive unit and revolves with a main shaft as an axis; two groups of cutting knife assemblies are respectively arranged at opposite sides of the front parts of the fixed box and the movable box through plankers. According to the invention, a vertical two-side tire ring cutting structure is adopted, an operator does not need to transport a tire or adjust the position of the tire during feeding and blanking; cutting knives at left and right sides can simultaneously cut two sidewalls of the tire, so work efficiency is greatly improved, and labor intensity of workers is reduced; the diameter of the expansion rack assembly is in a range of 200 to 550 mm, so the expansion rack assembly is flexibly applicable to tires of a plurality of sizes in a range of 800 to 1800 mm and has good compatibility and a wide application scope; and the cutting knives are easy to adjust and position and can safely and conveniently cut rubber rings of a plurality of diameters.

The invention relates to a medical syringe. The medical syringe comprises a core rod, a piston and a cylinder. An opening used for connecting the core rod is formed in one end of the cylinder, and a conical head used for connecting a needle is arranged at the other end of the cylinder. One end of the core rod is fixedly connected with the piston and is movably inserted into the cylinder. The outer diameter of the piston is the same as the inner diameter of the cylinder. A housing fixed to one end of the cylinder is arranged on the circumferential side of the conical head. A core rod head sleeve used for protecting the conical head is arranged in the housing. A connection groove matched with the core rod head sleeve is formed in the other end of the core rod. The core rod and the core rod head sleeve are connected through the connection groove, and the function of driving the core rod to move is achieved. A clamping groove used for storing the needle is formed in the surface of the cylinder. The medical syringe has the advantages of being simple in structure, convenient to use, capable of improving the use safety and effectively protecting the conical head and the needle, and the like.

The invention discloses a high-strength and high-toughness cast steel resistant to abrasion and corrosion in high temperature and used for an incinerator fire grate and a preparation method thereof. The high-strength and high-toughness cast steel resistant to abrasion and corrosion in high temperature and used for the incinerator fire grate comprises, by weight percentage, 0.18%-0.42% of C, 0.8%-2.0% of Si, 0.5%-1.2% of Mn, 15%-25% of Cr, 0-0.015% of P, 0-0.01% of S, 1.5%-3.5% of Al and 0.005%-0.02% of RE. When C is smaller than 0.25% and Cr is smaller than 20%, the high-strength and high-toughness cast steel further comprises 0.05%-0.25% of Nb and 0.05%-0.25% of Ti. The high-strength and high-toughness cast steel is prepared by the steps of sorting, smelting, refining, deoxidation, modification fining, casting and the like. The cast steel has the good casting molding performance and machining performance, high strength, good ductility and toughness, superior abrasion and corrosion resistance in high temperature, low production cost and long service life, and is especially suitable for large mechanical reciprocating grates of municipal refuse incinerators in China.

A portable work and storage container includes a container frame, an enclosure arrangement and a wall panel affixing arrangement. The container frame includes a ceiling frame, a floor frame and four vertical corner posts spacedly extended between the ceiling frame and the floor frame. The wall panel affixing arrangement includes a plurality of wall adjusters and a plurality of wall lockers, wherein every two of the wall adjusters are adjustably extended to bias against two outer side rims of the wall structure respectively for applying a pushing force so as to ensure the wall panels of each of the wall structure are coupled with each other side-by-side. The wall lockers are adjustably engaged with top rims of the wall structures respectively to lock up the wall structures between the ceiling frame and the floor frame so as to securely retain the wall.

The invention discloses an egg rack assembly used for a refrigerator and a refrigerator with the egg rack. The refrigerator comprises a refrigerator body and a door body. The egg rack assembly comprises a tray and an egg rack, wherein the rear side and the top part of the tray are opened, the front side of the tray is fixed on the door body, and the tray is provided with a first positioning piece; the egg rack is provided with a plurality of egg holes used for arranging eggs, and a second positioning piece is arranged at the bottom of the egg rack and can be magnetically matched with the first positioning piece so as to arrange the egg rack on the tray. According to the egg rack assembly of the embodiment of the invention, when a user needs to take more eggs, the egg rack can be taken out from the rear part of the tray, the egg rack can be taken out simply, is convenient to operate and is labor-saving when being taken, and in the egg rack assembly, the egg rack taking mode is different from a traditional taking mode, so that the size of the egg rack can be closer to that of the tray, so that the storage space in the refrigerator can be utilized sufficiently, and the practicability is good.

The invention relates to a medical injector. The medical injector comprises a mandrel, a piston and a barrel body; one end of the barrel body is equipped with an opening for connecting the mandrel, and while the other end of the barrel body is equipped with a cone head for connecting a needle; one end of the mandrel is fixedly connected with a piston and can be movably inserted into the barrel body; the outside diameter of the piston is equal to the inside diameter of the barrel body; a mandrel head sleeve is fixedly connected to the mandrel; a mounting trench for storing the needle is arranged in the mandrel; a protecting layer for protecting the needle is arranged on the inner wall of the mounting trench. The medical injector has the characteristics of being simple in structure, convenient to use, and high in safety in use.

The invention discloses an automotive tire antiskid device and a mounting method thereof. The automotive tire antiskid device comprises a plurality of rivet unit assemblies and two fixed steel cable assemblies, the rivet unit assemblies are connected end to end to form circles fitting the circumferences of automotive tires, the fixed steel cable assemblies are arranged on the front and rear sidesof the rivet unit assemblies, and are separately hang and fixed to the rivet unit assemblies in a tightening mode; the rivet unit assemblies comprise middle inserted rods, adjusting sleeving rods, left hinged seats, right hinged seats, jointed connecting rods, side hinged seats, hook connecting rods, fixed hook plates and anti-skid rivets; and the fixed steel cable assemblies comprise steel cablebodies, binding blocks, fixed blocks, jacking screws and limiting blocks. The automotive tire antiskid device and the mounting method thereof can be applied to a plurality of types of tires, originalbuffering and damping functions of the tires are not interfered, the operation is simpler and more efficient, accidental snap and falling off can be prevented, and road safety is ensured.

An improved Air Traffic Control Tower cab window shade system is presented, utilizing a faster motor than in prior art ATCT applications. The present invention's motor operates at 80 rpm and raises the shade material at 9.62 inches per second on a 2.3-inch diameter roller tube. This allows an average 8 foot high shade to fully raise in 10 seconds. The shade is half raised in about 5 seconds.

The improved speed is due to a spring box at the bottom end of the shade, providing constant tension to the shade and permitting the shade to be retracted safely at higher speed without risking scratching the cab window glass.

The invention discloses a safety injection needle which comprises an injection needle body. A needle base is arranged at one end of the injection needle body, a needle tube is mounted at one end of the needle base, an internal protecting sleeve is mounted on the outer wall of the needle tube, an outer wall sleeve is mounted on the outer wall of the internal protecting sleeve, the needle base is movably connected with a rotary protecting sleeve through a connecting limit block, a connecting shaft is arranged between the rotary protecting sleeve and the connecting limit block, an internal cavityis formed in the rotary protecting sleeve, an outer wall layer is arranged on one side of the rotary protecting sleeve, a rotary limit block is arranged on one side of the outer wall layer, a first fixed shaft is arranged at one end of the internal cavity, a second fixed shaft is arranged at the other end of the internal cavity, a friction block is arranged at one end of the second fixed shaft, and the outer wall sleeve is arranged on the outer wall of the internal protecting sleeve. The needle tube can be effectively protected by the outer wall sleeve and the internal protecting sleeve and can be conveniently prevented from being accidentally broken while sanitation of the needle tube is protected, and the injection needle body can be protected from damage before use by the aid of the rotary protecting sleeve.

The invention discloses a high-position air filtration mower which comprises a mower rack and a fuel oil engine arranged on the mower rack, wherein two sides of the mower rack are connected with handrails higher than the mower rack; a first air filter is arranged on the side edge of the air inlet of the fuel oil engine and is connected with a second air filter arranged on the upper side edge of one handrail through an air pipe; each of the first air filter and the second air filter comprises an upper cover and a lower cover buckled with each other; a sponge is arranged between each upper cover and the corresponding lower cover, and two sides of the sponge are fitted with filter paper; a guard board is connected with a rotation shaft on the outer side of the second air filter. According to the invention, the first air filter and the second air filter are arranged at different positions to obtain pure filtered air, so that the service life of the first air filter and the second air filter is prolonged, the combustion efficiency of the engine is improved, and the service life of the engine is also prolonged; in addition, the sponges are used as filter element structure, and the two sides of the sponges are fitted with the filter paper, so that the using cost is reduced.