14results about How to "Guaranteed expansion effect" patented technology

The invention relates to the technical field of cement-based building materials, in particular to a tunnel grouting material and a preparation method thereof.The tunnel grouting material is prepared by adopting cement as a cementing material, adding a large amount of industrial solid waste as an admixture, modifying steel slag to prepare semi-carbonized steel slag powder, and matching with phosphorus slag powder, carbide slag and desulfurized fly ash as the admixture. According to the preparation method, the water reducing agent and the SAP particles are added as additives, all the raw materials cooperate with one another, the grouting material which is good in flowability, compactness and mechanical property, has a long-term expansion effect in a humid environment and is good in sealing and anti-seepage effect is prepared, and efficient utilization of industrial solid waste is achieved at the same time.

The invention relates to the technical field of cement-based building materials, and in particular to a tunnel grouting material and a preparation method thereof. The invention adopts cement as a cementitious material and adds a large amount of industrial solid waste as an admixture, wherein semi-carbonized steel slag powder is prepared by modifying steel slag, and phosphorus slag powder, carbide slag and desulfurization ash are combined as admixtures, and a water reducer and SAP particles are added as admixtures. The raw materials cooperate with each other to prepare a grouting material with good fluidity, compactness and mechanical properties, and at the same time, has a long-term expansion effect in a humid environment and good sealing and anti-seepage effects, and at the same time realizes efficient utilization of industrial solid waste.

The present invention discloses a valve expansion device with a reinforcement and a valve expansion system. The valve expansion device with a reinforcement includes a stent and at least one reinforcement. The stent includes a proximal end and a distal end that are arranged opposite to each other in the axial direction, and at least two expansion arms connected between the proximal end and the distal end. Each expansion arm can be expanded or compressed along the radial direction of the stent, and at least one expansion arm is provided with a cutting portion on the side away from the other expansion arms. The reinforcement is fixedly connected between two adjacent expansion arms, and the reinforcement and the expansion arm are synchronously expanded or compressed along the radial direction of the stent. The valve expansion device with a reinforcement provided in an embodiment of the present invention connects the expansion arms in pairs by arranging reinforcements so that the expansion arms are indirectly fixedly connected together, which can prevent the expansion arms from being deformed by external forces and concave radially inward during radial expansion, so that the expansion arms can continue to expand outward to ensure the expansion effect.

The present invention discloses a rolling steel ball installation process method based on metal hot and cold deformation, including a tank support, a circulating cooling tank, a power system, a circulating cooling system, a negative pressure suction system, a rotating negative pressure suction device, a driving gear assembly, a lower plate rotating assembly, a driving gear assembly, and a composite gear shaft. The present invention uses the tank support as a structural support, the circulating cooling tank as a steel ball low temperature treatment reaction chamber, and the lower plate rotating assembly as a tool head heating device. The present invention has a compact structure, a reasonable layout, the advantages of high efficiency and good flexibility, and greatly reduces labor intensity.

The present invention relates to the technical field of medical devices, and more specifically to an electric vaginal dilator which is convenient to connect and disassemble, has a small size, and can adapt to the shape of the vagina to expand; it comprises an upper expansion piece (1), a lower expansion piece (2), a multi-rod transmission mechanism, a power source and a control device; wherein the upper expansion piece (1) and the lower expansion piece (2) enter the vagina and contact the skin, the power source and the control device are used to provide power, assist the doctor in holding and switching, and automatically control, etc., and the multi-rod transmission mechanism is used to convert the power direction to act on the upper expansion piece (1) and the lower expansion piece (2); it has the advantages of convenient connection and disassembly, small size, adaptability to the shape of the vagina to expand, safety, etc.

The present invention relates to the technical field of medical devices, and specifically to a labor analgesia and midwifery device, comprising a handle, an intermediate tube, an airbag and an inflation component, wherein one end of the handle is set as a gripping area, and the other end is set as an entry area; the intermediate tube is sleeved at the entry area and can slide along the extension direction of the handle; one end of the airbag is sealed and sleeved at the entry area, and the other end is sealed and sleeved at one end of the intermediate tube close to the entry area; the inflation component is used to inflate the inside of the airbag. During use, the entry area is first inserted into the cervix, and then the inflation component is used to inflate the inside of the airbag so that the volume of the airbag becomes larger to expand the cervix, and then the handle is moved outward to reduce the volume of the airbag, and then the intermediate tube is moved outward so that the airbag can roll along the side wall of the cervix, and then the handle and the intermediate tube are moved outward alternately until the airbag is separated from the cervix. By setting the airbag to move in a rolling manner, it is helpful to reduce the friction strength between the airbag and the side wall of the cervix and improve the experience.

The utility model discloses a board furniture connecting piece can install and invisible, easy to dismantle accessory of quick -witted, include: connecting column, expansion pipe and limit ball, the expansion pipe includes connecting pipe and dismantling pipe, connecting pipe and dismantling pipe side intercommunication form 8, limit ball sets up in the inside of connecting pipe, the side of connecting pipe is equipped with the limit piece, connecting column includes screw thread column and the plastic pipe of setting on the screw thread column, the one end of screw thread column is away from plastic pipe and sets up the connecting pipe of stretching out. The utility model discloses furniture board body connecting structure has the advantages of connecting firm, installing and dismantling convenient, not easy to damage the board body, and achieve that the hole position is completely not exposed, realize furniture connection truly no -hole invisible, make furniture more beautiful. It is fit in the furniture manufacturing field and is widely applied.

The invention discloses a high and low temperature torque test device for a hinge, which relates to the technical field of hinge testing, and comprises a thermal control component, a hinge component, a positioning component, a clamping component, a box component, a driving component and a testing component. The hinge component is placed on the top of the box component, the hinge component can be positioned by the positioning component, the hinge component can be clamped by the clamping component, the testing component can be driven by the driving component, the hinge component can be tested by the testing component, the hinge component, the testing component and the driving component can be heated by the thermal control component, the driving component drives the testing component, and then drives the hinge component to rotate. The invention can effectively obtain the history curves of the driving torque and friction resistance torque of the hinge component and the unfolding angle, and check whether the setting of the driving torque and the friction resistance torque are within the designed range. The invention has a compact structure and complete functions, and can meet the testing of various spacecraft hinges.

The application provides a display substrate and a display device, wherein the display substrate comprises a substrate, a photosensitive circuit and a display circuit arranged on the substrate, wherein the photosensitive circuit comprises a photodiode and a first driving transistor coupled with the photodiode; the display circuit comprises a display device, a second driving transistor and a switch transistor coupled with the display device respectively; the distance between the corresponding gate layer and the active layer of the first driving transistor and the second driving transistor is greater than the distance between the corresponding gate layer and the active layer of the switch transistor. The display quality is improved.

This application provides a roof-mounted airbag and a vehicle. The roof-mounted airbag includes a shell, an air bag, a gas generator, and a guide tube. The air bag is disposed inside the shell; the gas generator is disposed outside the shell and the air bag; the guide tube connects the gas generator and the air bag to guide the gas generated by the gas generator to the air bag. This application enables an effective reduction in the thickness of the roof-mounted airbag without affecting its deployment performance.

The present invention relates to a damping unit for a paper roll, a paper roll, and a device for spreading a paper sheet in the paper roll into a three-dimensional material, the damping unit being provided so as to be able to be connected to a case of the device for spreading a paper sheet in the paper roll into a three-dimensional material. And the friction force applied to the paper tube of the paper roll can enable the actual tension when the paper roll is unfolded to be always kept in a theoretical tension range along with the change of the weight of the paper roll. The friction force applied to the paper tube of the paper roll by the damping unit for the paper roll can enable the actual tension to be always kept in a theoretical tension range along with the change of the weight of the paper roll when the paper roll is unfolded; in other words, the friction force applied to the paper tube of the paper roll can enable the tension change in the stretching process of the honeycomb paper blank in the paper roll to be small within the theoretical tension range, and therefore it can be guaranteed that paper sheets have the good unfolding effect under the condition that manual repeated adjustment is not needed.

The utility model discloses an alarm device for a wind power plant integrated monitoring system, and relates to the technical field of wind power monitoring system alarm. The device comprises a device body, a storage groove is formed in the device body, band-type brake motors are fixedly connected to the left side and the right side of the inner wall of the storage groove, gears are fixedly connected to the output ends of the two band-type brake motors, a vertical rod is arranged on the lower side of the inner wall of the storage groove, and fixing grooves are formed in the left side and the right side of the rod wall of the vertical rod. Racks are fixedly connected to the inner walls of the two fixing grooves, and an alarm structure with a variable protection range is arranged at the upper end of the vertical rod. According to the utility model, the situation that the monitoring equipment cannot make alarm measures under emergency conditions is avoided, so that an operator can make corresponding emergency measures in time, the emergency effect in the use process of the equipment is improved, the loss in the use process of the equipment is reduced, and the safety of the equipment is improved.

The application discloses a mud plug ring machining method for a mud gun, and the mud plug ring machining method for the mud gun comprises the following steps: blanking, rough turning of an outer circle and an inner hole to obtain a ring-shaped workpiece, and machining of an opening on the workpiece; placing a gasket at the opening, and abutting two end faces of the workpiece at the opening with two side faces of the gasket respectively, then relatively fixing the gasket and the workpiece; finishing turning of the outer circle of the workpiece, then machining one end face of the workpiece to be flat; machining the other end face of the workpiece to be flat, then finishing machining of the inner hole of the workpiece; and finally recovering. The application solves the problem that in the prior art, the outer circle of the mud plug ring is continuously worn in the use process, the outer diameter of the mud plug ring becomes smaller, the opening gap of the mud plug ring and the mud bowl cooperation gap gradually increase, and the sealing performance of the mud bowl is affected.