37results about How to "Increase the amount of expansion" patented technology

The invention relates to a modified calcium oxide expanding clinker as well as a preparation method and application thereof. The preparation method of the modified calcium oxide expanding clinker comprises the following steps: grinding a calcium oxide expanding clinker till a certain grain size, putting the calcium oxide expanding clinker powder in a carbon dioxide atmosphere with certain humidity and forming plenty of dense calcium carbonate on the surface of the expanding clinker powder, thus preparing the modified calcium oxide expanding clinker. The modified calcium oxide expanding clinker can be mixed with a dispersion supporter, thus forming a modified calcium oxide concrete expansive agent. The modified calcium oxide expanding clinker prepared by the preparation method and the expansive agent thereof have the beneficial effects that the expansion quantity and expansion stress of the expanding clinker in cement concrete are obviously increased, thus optimizing the expansion processes of the expanding clinker and the expansive agent thereof; the weather resistance and moisture resistance of the calcium oxide expanding clinker and the expansive agent thereof are improved.

The invention relates to a modified calcium oxide expanding clinker as well as a preparation method and application thereof. The preparation method of the modified calcium oxide expanding clinker comprises the following steps: forming a dense calcium sulfate layer on the surface of an expanding clinker through reaction between sulfur dioxide gases or sulfuric acid and the calcium oxide expanding clinker, thus preparing the modified calcium oxide expanding clinker. The modified calcium oxide expanding clinker can be mixed with a dispersion supporter, thus forming a modified calcium oxide concrete expansive agent. The sulfated packing modified calcium oxide expanding clinker prepared by the preparation method and the expansive agent thereof have the beneficial effects that the expansion quantity and expansion stress of the expanding material in cement concrete are obviously increased, thus optimizing the expansion processes of the expanding clinker and the expansive agent thereof; the weather resistance and moisture resistance of the calcium oxide expanding clinker and the expansive agent thereof are improved.

In an intervertebral implant with at least one abutment surface formed from a plurality of parts for a vertebral body, which parts are movable relative to one another between an insertion position, in which the intervertebral implant has a small cross section, and a working position, in which the intervertebral implant has a larger cross section and in which the parts jointly form the abutment surface, and with an adjusting means for moving the parts out of the insertion position into the working position, in order to provide an uncomplicated structure having small dimensions, it is proposed that the adjusting means have at least one expansion body, which increases in volume when filled with a flowable medium and thus moves the parts into the working position.

The invention discloses a multilayer telescopiform expanding three-dimensional stage, which comprises a multilayer tower body structure and lifting mechanisms, wherein the multilayer tower body structure is provided with a layer of fixed tower body and a plurality of layers of lifting tower bodies which are orderly telescoped; the lifting mechanisms are arranged in lifting tower bodies to make the lifting tower bodies lift relative to adjacent external tower bodies; the fixed tower body comprises a plurality of fixed upright posts and trusses arranged among the fixed upright posts; each layer of lifting tower body comprises a plurality of lifting upright posts and trusses arranged among the lifting upright posts; and each lifting mechanism comprises a jacking device and a towing device, wherein the jacking device is arranged in each lifting upright post of each layer of lifting tower body; the towing device drives and pulls each lifting upright post to lift; and one end of the towing device is fixed on the bottom of another upright post adjacent to the radial outside of the towing device, the middle part is supported by the jacking device, and the other end is fixed on the bottom of each lifting upright post of each layer of lifting tower body. The multilayer telescopiform extending three-dimensional stage is a performance stage from plane to three-dimensional space for actors, so that the actors meet the requirement of high expansion performance in a small spacial range.

The invention relates to machinery for wiping windows in outer walls of a building, in particular to a transverse member double-telescopic mechanism of a window wiper. According to the technical proposal provided by the invention, the transverse member double-telescopic mechanism comprises a hollow fixed arm and is characterized in that a first telescopic arm is connected inside the fixed arm; a second telescopic arm is connected inside the first telescopic arm; one end of the fixed arm near the first telescopic arm is provided with a first drive mechanism; the power output end of the first drive mechanism is provided with a first gear wheel; the first telescopic arm is provided with a first rack; the first gear wheel is meshed with the first rack; one end of the first telescopic arm near the second telescopic arm is provided with a second drive mechanism; the power output end of the second drive mechanism is provided with a second gear wheel; the second telescopic arm is provided with a second rack; and the second gear wheel is meshed with the second rack. The transverse member double-telescopic mechanism ensures convenient use of the window wiper.

A method is described for producing phyllosilicate-intercalation compounds with an increased expansion rate and / or a modified onset temperature by intercalating intercalate compounds in native, expandable phyllosilicates, especially native vermiculite. The method is wherein at least one representative of the group comprising alcoholates of lithium and potassium and salts of lithium, sodium and potassium with organic acids is intercalated as intercalate compounds in the native phyllosilicate. Furthermore, the phyllosilicate-intercalation compounds obtained thereby and their use as intumescing materials, as intumescing, fire-retarding additive and / or in expanded form, can be used as additive for producing flame-retarding materials, as well as for preparing high temperature-resistant insulating panels and seals.

An air bag apparatus for a compact vehicle, having an air bag that is capable of restraining an operator on a seat from a front direction, in response to an expansion of the air bag, wherein it is possible to securely restrain the operator on the seat without a need for enlarging the expansion volume of the air bag, even if a yaw behavior and / or a rolling behavior of the vehicle body are / is large. The air bag and the vehicle to the rear of the seat are linked via a pair of restraining belts at the right and left, which are stored in the vehicle body, when the air bag is in a state of being folded, and which come into a state of tension, at the right and left exterior sides of the operator on the seat, when the air bag expands.

The invention relates to a three-dimensional stage capable of synchronously displaying multiple pictures, which comprises a support (20), a fixed block (30) fixed at the upper end of the support (20), lifting frames (40) sleeved on the support (20) and a driving device (50) for driving the lifting frames (40) to move up and down through a servo motor, wherein display screens (42) capable of realizing synchronous display are arranged on the outer surfaces of the lifting frames (40); and the display screens (42) are electrically connected with the driving device (50) through a central controller. A structure of combining a plurality of lifting frames is adopted; each layer of lifting frame is controlled to synchronously ascend or descend by arranging a synchronizing mechanism between adjacent lifting frames, the synchronous, steady and quick ascending and descending of each layer of lifting structure are realized, and rigidity and stability of each layer of the lifting frame are ensured during ascending and descending, so that the ascending and descending processes of the whole telescopic stage consisting of the fluctuation-type lifting frames are smooth and reliable.

The invention discloses a damping support base for a rail. The damping support base comprises a base, a rail support base, a damping spring supported between the base and the rail support base and a damper which is arranged in the base for applying damping effect on vibration of the rail support base, wherein the damper comprises an outer cylinder barrel, an inner cylinder barrel coaxially arranged in the outer cylinder barrel, a piston body which is in sliding fit to the inner cylinder barrel and a piston rod which is connected between the piston body and the rail support base, wherein the piston body comprises a barrel-shaped housing which is provided with a lower opening and is made of a permeability magnetic material, a central column which is coaxially and integrally formed in a barrel-shaped outer housing, a magnet exciting coil which is wound on the central column and a bottom cover for sealing the bottom of the barrel-shaped housing; oil flows through the piston rod through a transverse oil pass hole; and the inner wall of the transverse oil pass hole is fixedly provided with a throttling body made of a magnetostrictive material. Damping strength of the damper in the damping support base can be actively regulated according to needs, so that damping needs of the rail are met.

The invention discloses an improved swelling sleeve device which is used for machining of a motor case. The improved swelling sleeve device comprises a shaft sleeve; the rear end of the shaft sleeve can be fixed to a machine tool; a shaft hole is formed in the center of the shaft sleeve, and is internally provided with a telescopic shaft capable of moving axially along the shaft hole; the telescopic shaft comprises a connecting part at the rear end and an extrusion part at the front end; a reduced section is arranged on the rear side of the extrusion part; a plurality of swelling blocks are arranged on the peripheral surface of the front end of the shaft sleeve; the extrusion part abuts against the swelling blocks through propping columns that are arranged on the swelling blocks and penetrate into the shaft hole; and an elastic resetting mechanism is arranged between the shaft sleeve and each swelling block. The problems that a swelling sleeve in the prior art is complex in structure, high in operation difficulty, high in cost and small in expansion quantity are solved effectively; the production efficiency can be improved effectively; the production cost can be reduced; and the improved swelling sleeve device has very high practical value.

The invention discloses a metal pipe wall thickness detection device, and relates to the technical field of the ultrasonic detection. The device comprises an electromagnetic ultrasonic sensor, a mounting part for mounting the electromagnetic ultrasonic sensor, a buffer module and a driving module which are connected in order. The invention further provides a metal pipe wall thickness detection method, the method comprises the following steps: the driving module drives the buffer module, and then drives the mounting part for mounting the electromagnetic ultrasonic sensor, so that the electromagnetic ultrasonic sensor is propped against a metal pipe and rotates the metal pipe, the electromagnetic ultrasonic sensor is maintained to always close to the metal pipe, and the electromagnetic ultrasonic sensor transmits and receives a detection signal. The detection device disclosed by the invention is long in service life, convenient for operation, convenient and practical, and has the functions of improving the energy conversion efficiency, and satisfying the detection on the metal pipe wall thicknesses in different specifications.

The invention belongs to the technical field of expansion devices and discloses a damping and buffering expansion joint which is mainly and technically characterized by comprising profile steel side beams arranged pairwise, wherein a rubber sealing tape is arranged between the profile steel side beams; the top edge at the inner side of the profile steel side beam is of a concave-convex shape formed by circularly arranging convex teeth and grooves; the rubber sealing tape is fixed together with the profile steel side beam through a bolt; the bolt is arranged at the groove arranged at the inner side of the profile steel side beam; and an elastic pressing bar is arranged on the rubber sealing tape. The damping and buffering expansion joint provided by the invention has the advantages that profile steel machining is simplified, the rubber sealing tape is not needed to be limited inside a profile steel die, and therefore, simple production is realized. The length of each convex tooth is increased, so that the expansion amount of an expansion device is increased, bridge impact caused by jumping is reduced, the service life of the expansion joint and the service life of the bridge are prolonged, noise pollution to the environment is reduced, and the rubber sealing tape is convenient to replace.

The invention discloses a concrete expansion agent, concrete and a preparation method thereof. The concrete expansion agent contains an expansion agent base material and an additive; the additive is meta-aluminate; the mass ratio of the meta-aluminate and the expansion agent base material is 1.0-3.0%. Each cubic meter of concrete contains 240-300 parts of cement, 15-63 parts of concrete expansionagent, 920-1110 parts of sand, 810-1000 parts of stones, 2.1-3.6 parts of water reducing agents and 160-175 parts of water in parts by mass. According to the technical scheme, the concrete expansion agent disclosed by the invention has the advantages that the concrete expansion amount can be increased, uniform expansion can be realized, and the concrete compactness can be enhanced.

The invention discloses a catheter balloon. The catheter balloon comprises a core wire, an outer pipe, an adjusting mechanism, a force application part, a trigger mechanism and a balloon, wherein thecore wire is sleeved with the outer pipe, and a flow channel allowing fluid to pass through is defined by the outer pipe and the core wire; the adjusting mechanism comprises a fixed part and a movablepart, the fixed part is attached to the far end of the core wire, a guide hole is formed in the fixed part in the axial direction, and the movable part is provided with a guide column used for beingmatched with the guide hole; the force application part is used for applying force to the movable part so that the guide column can slide in the hole bottom direction of the guide hole; the trigger mechanism is provided with a locking state for keeping the guide column away from the hole bottom position of the guide hole and an unlocking state for enabling the guide column to freely slide; two ends of the balloon are attached to the far end of the outer tube and the movable part in a sealed mode respectively, and the interior of the balloon is communicated with the flow channel; the trigger mechanism is located in the balloon, and the trigger mechanism is switched from the locking state to the unlocking state based on the pressure of fluid supplied into the balloon.

The present disclosure provides a packaging adhesive, a packaging method, a display panel, and a display device. The packaging adhesive includes a frit, an organic solvent, and a material with a thermal expansion coefficient larger than that of the frit. Using the packaging adhesive provided by the present disclosure, the thermal expansion coefficient of the packaging adhesive from which the organic solvent is removed may be enhanced by doping the material with a thermal expansion coefficient larger than that of the frit into existing glass cement, so that in a packaging process using laser radiation, an expansion volume of the packaging adhesive when heated is increased. In this way, a gap between the packaging adhesive and an array substrate is effectively reduced, and a packaging effect is improved.

The invention discloses a ceiling curtain with a composite spring. The ceiling curtain comprises a spring installing shaft, an inner spring, an outer spring, a roller tube and curtain cloth, wherein the inner spring is arranged on the spring installing shaft in a sleeving way; the outer spring is arranged on the inner spring in a sleeving way; the roller tube is arranged on the outer spring in a sleeving way; the curtain cloth is coiled on the roller tube; the two ends of the roller tube are respectively connected with a rotating connector and a fixed connector; the two ends of the spring installing shaft, the inner spring and the outer spring are respectively connected with the rotating connector and the fixed connector. The inner spring and the outer spring are arranged on the spring installing shaft, so that under the condition that the total elasticity of the inner spring and the outer spring is greater than or equal to that of a large-diameter spring, the higher expansion amount is realized; the adaptation to a longer curtain cloth can be realized; the size of the whole ceiling curtain can be reduced; the installation, the storage, the transportation and the like are convenient. Compared with a conventional ceiling curtain, the ceiling curtain has the advantage that under the conditions of the same curtain cloth width and the same size, the length of the curtain cloth is more than 30 percent longer than that of the conventional curtain cloth.

The invention relates to a machine for wiping windows on the outer wall of a building, in particular to a double telescopic mechanism of a cross arm of a window cleaning machine. According to the technical solution provided by the present invention, the cross-arm double-telescopic mechanism of the window cleaning machine includes a hollow fixed arm, which is characterized in that: the first telescopic arm is connected in the fixed arm, and the first telescopic arm is connected in the first telescopic arm. A telescopic second telescopic arm; a first drive mechanism is set at the end of the fixed arm close to the first telescopic arm, a first gear is set at the power output end of the first drive mechanism, and a first gear is set on the first telescopic arm The first rack, the first gear meshes with the first rack; a second drive mechanism is arranged at the end of the first telescopic arm close to the second telescopic arm, and the power output end of the second drive mechanism is provided with the first Two gears, a second rack is arranged on the second telescopic arm, and the second gear meshes with the second rack. The invention can facilitate the use of the window cleaning machine.

The invention provides a gas bearing turbine expansion machine, and relates to the field of mechanical equipment. The gas bearing turbine expansion machine comprises a shell and a center shaft arranged in the shell. A left gas bearing and a right gas bearing are arranged on the left side and the right side of the center shaft in the length direction. The left gas bearing is connected with an expansion machine body through a sealing heat insulation sleeve, and the right gas bearing is connected with a draught fan wheel through a sealing heat insulation plate. The outer side of an expansion wheel is provided with a turbine volute fixed to the left side of the shell. The outer side of the draught fan wheel is provided with a draught fan volute fixed to the right side of the shell. The right side of the draught fan volute is fixedly connected with a draught fan wheel guiding sealing cover. Two radial through holes are formed in the sealing heat insulation plate and serve as a normal-temperature sealing gas inlet and an instrument high-temperature waste gas exhaust port correspondingly. A water path channel is arranged in the draught fan wheel guiding sealing cover and used for leading-in of circulation cooling water. Through the design, the draught fan wheel rear temperature can be effectively reduced, the design adapts to higher-rotation-speed expansion machines, the expansion efficiency is improved, the running adaptive range of the expansion machine is enlarged, and higher market competiveness is achieved.

The invention relates to a modified calcium oxide expansion clinker as well as a preparation method and application thereof. The preparation method of the modified calcium oxide expansion clinker comprises the following steps: carrying out physical adsorption and chemical reaction on calcium oxide expansion clinker powder in phosphoric acid which serves as a solvent, or mixing a calcium oxide expansion clinker with phosphoric acid and grinding the mixture into powder of a certain finesses, and forming a large number of compact calcium phosphate on the surface of the calcium oxide expansion clinker powder to obtain the modified calcium oxide expansion clinker. The modified calcium oxide expansion clinker can be mixed with a dispersible carrier to form a modified calcium oxide concrete expansion agent. By adopting the phosphorylated coated modified calcium oxide expansion clinker and the modified calcium oxide concrete expansion agent, the expansion quantity and expansion stress of an expansion material in cement concrete can be increased significantly, the expansion process of the modified calcium oxide expansion clinker and the modified calcium oxide concrete expansion agent can be optimized, and the weather resistance and moisture resistance of the modified calcium oxide expansion clinker and the modified calcium oxide concrete expansion agent can be enhanced.

The present disclosure provides a packaging adhesive, a packaging method, a display panel, and a display device. The packaging adhesive includes a frit, an organic solvent, and a material with a thermal expansion coefficient larger than that of the frit. Using the packaging adhesive provided by the present disclosure, the thermal expansion coefficient of the packaging adhesive from which the organic solvent is removed may be enhanced by doping the material with a thermal expansion coefficient larger than that of the frit into existing glass cement, so that in a packaging process using laser radiation, an expansion volume of the packaging adhesive when heated is increased. In this way, a gap between the packaging adhesive and an array substrate is effectively reduced, and a packaging effect is improved.

The invention discloses a highly telescopic hydraulic support for a low coal seam, which comprises a base, a top beam and a shield beam, wherein two upright posts are symmetrically arranged between the top beam and the base, and two balancing jacks are symmetrically arranged between the top beam and the shield beam hinged with the top beam; a front connecting rod and a rear connecting rod are respectively hinged between the shield and the base, the middle part of the base is provided with a push jack, and the push jack is hinged with a push rod; an axial slotted hole is arranged in the wall of a middle cylinder of the upright posts, an upper opening and a lower opening, which are communicated with the slotted hole, are arranged in the internal wall and the external wall of the middle cylinder, the upper opening is communicated with the upper cavity of the middle cylinder, and the lower opening is communicated with the upper cavity of an external cylinder; the rear part of the base is provided with two free positions corresponding to the balancing jacks; the front end and the rear end of the push rod are respectively provided with a pair of joint seats; each joint seat is provided with a through hole communicated with a liquid inlet and outlet steel pipe arranged in the cavity of the push rod and a fixing hole, of which the side wall is provided with a holding hose; and the topbeam and the base are made of Q800 material. The support is highly telescopic, has a reasonable pedestrian passageway in a low position state, and can satisfy the mining requirement of an unstable high coal seam.

The invention discloses a seamless telescopic device for a detection surface of a medium-low speed magnetic levitation track sensor. The seamless telescopic device comprises an F-shaped steel rail (1), an induction surface telescopic mechanism and a seamless telescopic mechanism (5), wherein the F-shaped steel rail (1) is a steel rail with an F-shaped section; the induction surface telescoping mechanism comprises a fixed aluminum induction plate (3) and a joint-crossing aluminum induction plate (2). The limiting shells (503) are arranged at the head end and the tail end of the F-shaped steel rail (1), an end cover plate (504) is arranged at one end in each limiting shell (503), a fastening cover plate (505) is arranged at the other end in each limiting shell (503), the high-toughness curlysprings (502) surround cylindrical steel bars, and one ends of the high-toughness curly springs (502) are connected with flexible curls. According to the invention, a continuous telescopic suspensionsensor detection surface is formed in the rail gap distance range of the F-shaped steel rail, and no rail gap is locally uneven or step-shaped unsmooth, so that the comfort of a maglev train passingthrough the rail gap is better.

The invention provides a roll profile with less unevenness of steel pipe internal threads rolled by an Assel unit. From an inlet side to an outlet side of a roll, an inlet cone area, a shoulder area and a rolling area are arranged in sequence. The inlet cone area is composed of a first inlet cone area body and a second inlet area body. The first inlet cone area body is located between the second inlet cone area and an inlet end of the roll. The ratio of the length of the first inlet cone area in the axial direction of the roll to that of the second inlet cone area in the axial direction of theroll is 7 to 10. An inlet taper angle alpha 1 of the first inlet cone area is one degree from an inlet taper angle alpha 2 of the second inlet cone area. The ratio of the length of the rolling area in the axial direction of the roll to that of the second inlet cone area in the axial direction of the roll is 4 to 5. According to the roll profile with less unevenness of the steel pipe internal threads rolled by the Assel unit, the technical problem that because spiral unevenness appears on the internal surface of a steel pipe, user experience is severely influenced.