11results about How to "Stressful" patented technology

The invention relates to the technical field of electronic equipment, in particular to a composite board, a shell, a display module and electronic equipment. The composite board comprises a carbon fiber resin composite layer and a light layer, the number of the carbon fiber resin composite layers is multiple, the multiple carbon fiber resin composite layers and the light layer are arranged in a stacked mode, and the light layer is located between any two carbon fiber resin composite layers; the density of the two carbon fiber resin composite layers on the outermost side of the composite board is larger than that of the light layer. The composite board is small in density and light in weight, and weight reduction of electronic equipment can be achieved.

The utility model discloses a safety protection device for coal mine construction, which belongs to the field of coal mine safety protection and comprises two bases which are oppositely arranged, hydraulic supports are fixedly mounted at the front ends and the rear ends of the bases, a group of lifting frames which are oppositely arranged are mounted on the hydraulic supports, and supporting mechanisms which are used for adapting to mine tunnels with different widths and heights are arranged on the lifting frames. The supporting mechanism comprises two arc-shaped frames which are symmetrically arranged. The device has the beneficial effects that the supporting mechanism, the pressure bearing mechanism and the pressure measuring mechanism are arranged, the device can adapt to mine tunnels with different heights and widths for supporting through arrangement of a lifting frame and a connecting shaft, meanwhile, the top of the mine tunnel can be evenly supported in cooperation with a top plate and multiple sets of arc-shaped plates, and the situation that local stress of the mine tunnel and the device is too large is prevented; the overall supporting effect is optimized, the supporting force of the device on the top of the mine tunnel can be measured through the pressure gauge on the first water tank, safety is improved, and the safety protection performance of the coal mine construction device is improved.

The utility model discloses a high-rise building high-strength composite insulation board which comprises a board body, the board body comprises a fireproof board, aerogel, a composite board, a honeycomb board, reinforcing cloth, reinforcing boards and a base board, the reinforcing boards are bonded to the two sides of the base board, the reinforcing cloth is bonded to the reinforcing boards, the honeycomb board is bonded to the reinforcing cloth, the composite board is bonded to the honeycomb board, and the composite board is bonded to the base board. The aerogel is located between the fireproof plate and the composite plate, and the fireproof plate comprises a fireproof coating, a surface layer, fireproof cloth and a bottom plate. The fireproof plate, the composite plate, the reinforcing cloth and the like are matched to improve the overall strength of the insulation board and are not easy to damage; the fireproof plate and the reinforcing cloth are matched to improve the overall fireproof and flame-retardant capability.

The invention discloses an armature reed assembly and a vacuum relay, and belongs to the field of vacuum relays. The armature reed assembly comprises an armature and a connecting support. The armature is provided with a mounting surface, a fixing part is arranged on the mounting surface, the connecting support is arranged on the mounting surface and comprises a support body and a connecting part, the connecting part is arranged at one end of the support body, the other end of the support body is arranged on the mounting surface, the support body is connected with the fixing part, and the fixing part supports the support body. In the embodiment of the invention, when the armature drives the bracket body to move and the bracket body drives the transmission rod to move through the connecting part, under the condition that the electromagnetic assembly applies the same force to the armature, the bracket body enables the transmission rod to be stressed more greatly, so that the normally open pressure of the normally open contact of the vacuum relay is increased.

The utility model provides a kind of plate spring measuring tool, belong to plate spring measurement technical field, the plate spring measuring tool has substrate, two positioning components are equipped on substrate, each set of positioning component includes three locating plates, the outer circumferential surface of three locating plates is in abutment with the inner circumferential surface of plate spring eye, left positioning component is slidably connected on substrate;Positioning component further has bottom plate, fixed mounting is equipped on bottom plate, vertical plate is set to the through hole of longitudinal penetration being opened in vertical plate, three are fixedly installed in the front wall of vertical plate and are circumferentially arrayed distribution's hinged seat, the one end of adjusting plate is hinged in hinged seat, and the other end of adjusting plate is installed with locating plate;The support plate of vertical movement is equipped below locating plate, the top surface of support plate is in abutment with the bottom end of plate spring eye;The utility model solves the technical problem that locating shaft size is not adjustable, if the gap of locating shaft and eye inner diameter is too large, then it is not convenient to position plate spring, and it can affect the precision of plate spring measurement.

The utility model discloses a movable mold plate for manufacturing an automobile engine cylinder, which relates to the technical field of movable mold plates and comprises a movable mold plate body and a guide pillar mounting component. According to the movable mold plate for manufacturing the automobile engine cylinder body, the guide column mounting assemblies are arranged, and the guide column mounting assemblies are pre-embedded in the seat holes of the guide seats at the four corners of the movable mold plate body, so that when the movable mold plate is used, the guide column body is firstly inserted into the inner cavity of a machine body from the through hole in the middle of the thread rotating handle until the tail end of the guide column body is in contact with a rubber pad; then the thread rotating handle is screwed and penetrates into the inner cavity of the machine body under the matching of the thread rotating handle and the thread opening, and at the moment, the inclined surface on the inner side of the bottom of the thread rotating handle is in extrusion fit with the conical surface on the outer side of the top of the elastic clamping piece, so that the elastic clamping piece is closed to lock the guide pillar body therein; compared with an interference fit knocking installation mode in the prior art, the installation mode is simpler and more convenient to operate, and meanwhile, when the guide pillar body is abraded, quick disassembly, assembly and replacement are also facilitated.

A printing trolley is driven by a linear motor with double cross beams and mover plates at the same time, on the premise that the number of nozzles exceeds 100, through mover plate driving, on one hand, large enough driving force is provided, and on the other hand, the two mover plates are controlled in parallel, so that the printing efficiency is improved. Synchronous driving of the two mover plates can be guaranteed, driving force is kept synchronous, meanwhile, accurate control is achieved, and printing stability and precision are effectively guaranteed; a mover on the mover plate adopts a multi-mover structure, and a plurality of movers can provide larger driving thrust for the printing trolley; meanwhile, the distance L1 between the heads of the adjacent mover plates is integer multiples of the length L2 of the stator plates, so that the thrust directions provided between the movers are consistent, and opposite thrust generated between the movers can be overcome; furthermore, the linear motor is located above the cross beam, the structure is simple, the installation precision can be easily guaranteed, and the thrust is increased; under the huge weight of the printing trolley, the running stability of the printing trolley can be improved; the first sliding rail located at the top of the cross beam can increase bearing capacity, and the first sliding rail located on the side face can improve operation precision.

The application discloses a kind of on-orbit deployment devices of CubeSat, belong to aerospace technology field.The device includes: main frame assembly, hatch, hatch unlocking mechanism, push plate assembly, lateral compression assembly and hatch compression assembly, the main frame assembly shell is square semi-enclosed body, the hatch is rotatably connected on shell by hatch unfolding locking assembly and can form closed body with shell;The hatch unlocking mechanism is installed in the left frame outside;The push plate assembly is arranged in the shell inside and is connected on the bottom plate, for pushing out CubeSat;The lateral compression assembly is arranged in the shell inside right upper corner guide rail support frame, for lateral compression CubeSat;The hatch compression assembly is fixedly installed in the inside of hatch, for CubeSat in the direction perpendicular to bottom plate is compressed.The device has high reliability, low separation angular velocity, ultra-high vacuum environment unlocking and has satellite lateral compression and the like characteristics.

The utility model provides a thread cutting structure of sewing machine belongs to sewing machine technical field. It solved how to avoid the problem of bird nest -like thread ball phenomenon on the sewing material. The thread cutting structure of this sewing machine, sewing machine includes the needle plate with the needle drop hole of lower shaft, the thread cutting structure includes the dynamic cutter and the thread pressing piece of the sleeve setting in the lower shaft outside and can rotate relative to the lower shaft circumference, the needle plate is located the upper of dynamic cutter and thread pressing piece, the outer wall of dynamic cutter is equipped with the thread hooking hole, the thread hooking hole one side hole wall is the inclined wall that sets up relative to the axial inclination of lower shaft, the needle drop hole is close to the edge of one side of inclined wall setting, the thread pressing piece is close to the edge of other side of inclined wall setting, the needle plate bottom is fixed with the thread cutting knife, the needle drop hole is the strip hole, one end of needle drop hole is used for the needle to wear and set, the other end of needle drop hole is towards the inclined setting of thread cutting knife head, and the head of thread cutting knife projects on the end hole wall of needle drop hole inclined setting and sets up. The thread cutting structure of this sewing machine can avoid the bird nest -like thread ball phenomenon on the sewing material.

The invention discloses a deck type reinforced concrete box type arch bridge steel arch frame arch foot structure which comprises a foundation, a foundation pit is formed in the foundation, a supporting assembly is fixed in the foundation pit, a plurality of sets of embedded frames are installed in the supporting assembly, cooling assemblies are connected to the outer sides of the embedded frames, and the cooling assemblies are connected to the outer sides of the embedded frames. The top end of each supporting assembly is connected with a plurality of sets of main rods. The device has the beneficial effects that by arranging the cooling assembly, when concrete is injected into the main rod, a worker uses external water supply equipment to inject water into the communicating pipe on one side through a water inlet in the cooling assembly, and circulation sleeves are connected through the communicating pipes; when the cooling water flows into the circulation sleeve, heat generated during concrete solidification can be absorbed, so that the welding position of the connecting column and the main rod is cooled, expansion caused by heating is avoided, the situation that the welding position is subjected to large stress is avoided, potential safety hazards caused by cracks are avoided, and the used cooling water is discharged through a water outlet in the other side.

The present invention provides a saturated reactor suitable for a direct current transmission system, the reactor comprising an iron core, a coil and a water cooling system; the coil is connected in parallel with a variable resistor whose resistance is inversely proportional to the current passing through it, and the reactor body composed of the coil and the iron core is provided with a water cooling system. The present invention connects a resistor with a variable resistance in parallel to the iron core coil of a traditional reactor; and its resistance is inversely proportional to the current passing through it; when the thyristor connected in series with the reactor is turned on, since the current passing through the variable resistor is relatively small, its resistance is relatively large, which can provide sufficient damping to limit the excessive growth of the thyristor gate current; and after the thyristor is fully turned on, the current passing through the variable resistor increases, so its resistance decreases, the corresponding damping decreases rapidly, and the heat generated by it decreases; the on-state energy loss is reduced, and the heat dissipation of the reactor is improved.