40results about How to "Strong" patented technology

The invention discloses a connecting joint for vertical steel bars of a prefabricated panel by adopting UHPFRC (Ultra High Performance Fiber Reinforced Concrete) lap joint, and belongs to the technical field of building structures. The connecting joint comprises a first prefabricated wall panel and a second prefabricated wall panel, wherein the first prefabricated wall panel comprises a connecting hole and a first connecting steel bar; the second prefabricated wallboard comprises second connecting steel bars, the first connecting steel bars and the second connecting steel bars are arranged in the connecting holes at intervals, and UHPFRC is poured into the connecting holes. The connecting holes are formed in the horizontal joints of the bottoms or the tops of the prefabricated wall panels, the connecting steel bars are arranged in the connecting holes, the connecting steel bars extending out of the prefabricated wall bodies adjacent to the horizontal joints are in single-row or double-row lap joint in the connecting holes by pouring the UHPFRC, and therefore formworks and sleeves / casing pipes are omitted, and the construction cost is reduced. The construction technology of vertical steel bar connection in the fabricated shear wall is obviously simplified, and the connection cost is reduced.

The invention discloses a splicing and water entering method for a long and large pipeline. The splicing and water entering method comprises the steps that firstly, a splicing welding station, an anti-corrosion station and a water entering station are sequentially arranged on a pipeline splicing platform at intervals from back to front; secondly, the multiple pipe joints are hoisted and placed on the assembling and welding stations of the pipeline splicing platform through a crawler crane; thirdly, the pipeline sections are pulled forwards to an anti-corrosion station through steel wire ropes on a plurality of winches; fourthly, the ends of the steel wire ropes on the winches are sequentially wound around the corresponding rear fixed pulleys and the corresponding front fixed pulleys downwards, and then the steel wire ropes on the winches pull the pipeline sections forwards to a launching station; and 5, when the tide rises, the pipeline sections are pulled forwards to the gentle slope through the steel wire ropes on the winches, then the steel wire ropes on the winches are dragged slowly, and the pipeline sections freely roll to the water along the launching sliding table by means of the gravity center. Pipeline splicing and water draining are facilitated, and the finished product quality of the pipeline can be protected.

The present invention discloses a device for monitoring geological environment in mines, and belongs to the technical field of geological monitoring in mines. The device includes a device box, a device positioning assembly, a telescopic drill rod and a propulsion drill bit structure. One side of the device positioning assembly is connected to the device box, and the other side of the device positioning assembly is fixedly connected to the slope of the mine to be monitored by screws. The telescopic drill rod is rotatably connected to the device box. The present invention is easy and quick to install, does not require an additional mounting frame, and better matches the mine ground, has higher stability, and compared with the use of springs, not only is the force greater, but the drilling into the mountain can be more stable, and it is not easy to cause impact damage to the front end of the propulsion drill bit structure. When it rotates in contact with the soil, a downward force can be formed, and the telescopic drill rod can be retracted. The specific distance length can be adjusted according to the actual geological exploration needs to go deep into the mountain.

The invention discloses a surface micro-texture of a radial sealing fin of a cycloid rotor engine. The surface micro-texture comprises a double-layer herringbone groove, a sealing weir area and a sealing dam area. The double-layer herringbone groove is formed in the contact surface of the rotor, gas enters the groove from the upper-layer gas inlet and the lower-layer gas inlet in the vertex angle of the herringbone groove, the maximum pressure value is achieved in the groove, and the gas is exhausted from the upper-layer gas outlet and the lower-layer gas outlet after the pressure difference effect is completed. A plurality of pairs of herringbone grooves are evenly distributed in the radial sealing piece, a sealing weir area is arranged between every two adjacent pairs of herringbone grooves in the axial direction, and a sealing dam area is arranged on the outer side. The herringbone grooves are of an axial symmetry structure, the groove depth is 1-5 micrometers, the number of the herringbone grooves is 2-10 pairs, and the edges can be straight lines, arc lines, spiral lines or sawtooth lines. Gas enables the radial sealing fins and the rotor to be tightly adsorbed through pressure difference, and the sealing weir area and the sealing dam area provide multi-layer sealing protection. The air tightness problem of the radial sealing piece is solved, the stable radial sealing performance of the cycloid rotor engine is achieved, and gas leakage is remarkably reduced.

The utility model discloses a mowing blade with a good heat dissipation effect, which comprises a cutterhead and five blades, the surface of the cutterhead is provided with a mounting groove, the five blades are all rotatably mounted on the inner wall of the mounting groove in a circumferential array, the surface of the cutterhead is provided with a fixing structure capable of fixing the blades, the fixing structure comprises a fixing plate, and the fixing plate is fixedly connected with the cutter head. Five limiting pins are arranged at the lower end of the fixing plate in a circumferential array mode, and a first limiting groove, a second limiting groove and a third limiting groove are formed in the surface of the cutter head and the surface of the blade correspondingly. Compared with the prior art, the mowing blade with the good heat dissipation effect has the advantages that the connecting mode between the blade and the cutter head can be changed through the fixing structure, when the blade and the cutter head are rotationally connected, the blade can have the buffering function and is suitable for grass with many riprap, and when the blade and the cutter head are fixedly connected, the blade can have the buffering function; and the blades can be made to have high strength, hard grass and trees can be cut, and therefore the practicability of the device is improved.

The utility model belongs to the technical field of part fixing equipment, and particularly relates to a part fixing structure for a die part machining table, which comprises an operation table, a movable clamping plate and a mounting plate are sequentially mounted at the top of the operation table, a rotatable screw rod is mounted on the operation table, a movable block screwed on the screw rod is arranged on the movable clamping plate, and the mounting plate is mounted on the movable clamping plate. A driving part connected with one end of the screw rod and used for rotating is installed at one end of the operation table, the movable clamping plate is made to be close to or away from the mounting plate based on rotation, a buffering part used for buffering is further installed on the side, close to the movable clamping plate, of the mounting plate, and a pressure sensor abutting against the buffering part is installed in the mounting plate; the screw rod, the moving block and the driving piece are additionally arranged, the moving block is connected to the screw rod in a screwed mode, when the driving piece is damaged, the screw rod cannot rotate, and therefore parts are prevented from being separated from the moving clamping plate and the mounting plate.

The embodiment of the application provides a manufacturing method of light and thin reinforced floor, and belongs to the technical field of plate manufacturing. The manufacturing method of light and thin reinforced floor comprises the following steps: providing a mixture; mixing water 100-140 parts, a modifier 3-5 parts, a halogen agent 1-5 parts, a coupling agent 1-5 parts, plant fiber 10-30 parts and wood fiber 30-60 parts in proportion to obtain the mixture; placing the mixture into a mold, and obtaining a base material after static demolding and drying; hot-pressing forming; impregnating balance paper, decorative paper and wear-resistant paper to obtain impregnated balance paper, impregnated decorative paper and impregnated wear-resistant paper, and then hot-pressing forming the impregnated balance paper, the base material, the impregnated decorative paper and the impregnated wear-resistant paper from bottom to top to obtain the reinforced floor. The manufacturing method of light and thin reinforced floor can meet the mechanical properties of the reinforced floor while making the reinforced floor lighter and thinner.

This utility model provides a hinge connection structure, including a cabinet, a door, a first hinge, and a second hinge. The first hinge includes a main support plate, one end of which is fixedly connected to the cabinet, and the other end of which is rotatably connected to a wheel. The wheel is fixedly connected to the door. A cam is provided on the wheel, and the working surface of the cam has at least three concave surfaces, with a convex surface between adjacent concave surfaces. A roller is movably connected to the main support plate, and an elastic element is provided between the main support plate and the roller. The elastic element always tends to allow the roller to abut against the working surface of the cam and to stop at the concave surface. The second hinge includes a hinge plate and an eccentric wheel. One end of the hinge plate is fixedly connected to the cabinet, and the other end is connected to a hinge shaft. One end of the eccentric wheel is fixedly connected to the door, and the other end of the eccentric wheel is fitted with a matching bearing between it and the hinge shaft. Compared with the prior art, this utility model has the advantages of simple structure, high strength, and long service life.

The utility model relates to the technical field of button attaching machines, and discloses a double-oil-cylinder hydraulic button attaching machine. The double-oil-cylinder hydraulic button punching machine comprises a workbench; the buckling and pressing mechanism is arranged on the workbench and comprises a middle frame, a pushing and pressing plate, a clamping and pressing assembly and a jig; through holes are formed in the two end faces of the middle frame, and the two pushing and pressing plates are arranged at the positions, close to the two ends of the through holes, in the middle frame in a mirror image mode. The clamping and pressing assembly is arranged between the two pushing and pressing plates and abuts against the pushing and pressing plates, and the jig is arranged below the clamping and pressing assembly and used for positioning a steel buckle; the hydraulic oil cylinders are installed at the two ends of the buckling mechanism, and the ends of output shafts of the hydraulic oil cylinders penetrate through the through holes to be connected with the pushing plate. According to the double-oil-cylinder hydraulic button punching machine, the two sides of a steel button can be pressed at the same time in the buckling and pressing process, the pressure on the steel button is uniform, the strength is high, the steel button can be tightly and uniformly buckled and pressed on a conveying belt, and the strength of a connector of the conveying belt is improved.

The utility model provides a rock double-sided shear test device matched with a press machine, which is used in the technical field of rock mechanics test and comprises a normal pressurization system and a shear system, the normal pressurizing system comprises a base, a magnetic frame, a normal pressurizing jack, a positioning column and a positioning ball; the shearing system comprises a lower fixed die, an upper fixed die, a shearing die, a normal fixed cushion block, a fixed die inner ring and a shearing die inner ring. The device is simple in structure, high in mounting precision and small in occupied space, can be matched with a press machine to complete a rock double-sided shear test, and has important significance on an indoor rock test.

A positive temperature coefficient ceramic thermistor element having strong reducing atmosphere resistance and a preparation method therefor, the thermistor element comprising a sintered thermosensitive ceramic piece that uses lead barium titanate as a base, as well as metal ohmic electrodes which are positioned on two side surfaces of the thermosensitive ceramic piece. The thermistor element has the following features: the thermistor element further comprises a microporous channel barrier layer, and the microporous channel barrier layer comprises a glass sealing layer or an organic matter sealant; when the microporous channel barrier layer is the glass sealing layer, the glass sealing layer integrally wraps the outer surface of the thermosensitive ceramic piece, and the metal ohmic electrodes are combined on two side surfaces of the glass sealing layer; and when the microporous channel barrier layer is the organic matter sealant, the organic matter sealant fills and blocks micro-pores in the surfaces of the metal ohmic electrodes combined on the two side surfaces of the thermosensitive ceramic piece and, at the same time, blocks gaps in the surfaces of areas, that do not have the metal ohmic electrodes, of a peripheral edge of the thermosensitive ceramic piece. Thus, resistance to harsh environments is improved, service life is prolonged, and the reliability and expected service requirements of related heating groups are improved.

The invention discloses an angular impact tool, belongs to the field of electric tools, solves the problem that an existing impact tool is not suitable for a narrow space, and adopts the technical scheme that the angular impact tool mainly comprises a shell, a driver, an impact mechanism and a gear assembly are arranged in the shell, and the driver drives the impact mechanism through the gear assembly; the impact mechanism comprises a driving shaft, a hammer and an anvil block, the end, away from the anvil block, of the driving shaft is connected with a first gear, the first gear is in transmission connection with the gear assembly, a first mounting groove is formed in the middle of the first gear, the shell is provided with a supporting piece, the supporting piece is provided with a first protrusion extending into the first mounting groove, and the peripheral side of the first protrusion is sleeved with a first bearing; the first bearing is embedded into the first mounting groove, the outer side wall of the first bearing is matched with the inner side wall of the first mounting groove, and the supporting piece covers the first mounting groove. The whole structure is more compact and can be suitable for a narrow space.

The invention belongs to the technical field of protective materials, and particularly relates to a leg guard plate and a preparation method thereof. The leg guard plate is of a curved surface structure, the whole front face is smooth, and the face attached to the skin is provided with a ventilation channel; comprising an elastic anti-slip structure layer, a fiber base material layer, an elastic impermeable layer, an energy absorption buffer layer and a plastic layer which are sequentially stacked from inside to outside. The leg guard plate is of a multi-layer composite structure, the elastic anti-slip structure layer has good anti-slip performance, and the leg guard plate is not prone to displacement in the using process and is well attached to the skin. The energy absorption buffer layer is made of a shear thickening composite material (NNF), so that impact force generated during impact can be effectively buffered and absorbed, and better protection is provided for legs. Meanwhile, the leg guard plate is provided with an anti-slip structure and a ventilation channel, so that heat and water vapor can be quickly taken away, and good air permeability is achieved. The leg guard plate is simple in structure, integrally formed, free of being sewn with fabric, capable of conforming to ergonomics, excellent in attaching performance and high in wearing comfort degree.

The utility model provides a device for replacing a vertical loop rope wheel without breaking a rope, which comprises a first main body support and a second main body support, the first main body support and the second main body support are arranged on two sides of a rope wheel group base, and a plurality of first steel rope tools are arranged on the first main body support at intervals. A plurality of second steel rope tools are arranged on the second main body bracket at intervals; each rope wheel, the second rope wheel below the rope wheel and the first steel rope sling and the second steel rope sling on the two sides of the rope wheel form a winding structure, and the other end, wound around the multiple winding structures, of the steel rope is connected to the steel structure. Under the condition that the rope is not broken, the influence of the steel rope is eliminated for the vertical loop rope wheel, the vertical loop rope wheel is directly replaced, the working difficulty is reduced, and the working time is shortened.

This utility model discloses a pressure test device for hydrogeological engineering surveys, including a main body and a support mechanism located on one side of the main body. This support mechanism reduces the sagging caused by the device connecting to the hose through bottom support, ensuring the stability of the connection end. The support mechanism includes a side frame fixedly connected to one side of the foot pad. Water is introduced through an external hose when the valve body is opened. Water is introduced into the pressure test air chamber at one end of the water inlet pipe through a water meter and the valve body. After being pressurized in the pressure test air chamber, water is discharged through a drain pipe. This effectively reduces the sagging caused by the device connecting to the external hose during the assembly and use of pressure tests in hydrogeological engineering surveys. This also ensures that during long-term use, the connection end is not affected by external force accidental contact or impact force generated during water supply, thus reducing the shaking amplitude caused by the impact force. This improves the confidentiality of the connection and reduces the occurrence of water leakage after loosening.

The digging device comprises a support, two main coulters fixed to the left side and the right side of the support and two auxiliary coulters located below the support, a driving set is arranged on the support, a supporting frame is slidably connected to the bottom of the support, and the two auxiliary coulters are arranged in the supporting frame. The two auxiliary coulters are fixedly connected to the left side and the right side of the bottom of the supporting frame correspondingly. According to the device, when the driving plate ascends, the side plates are unfolded firstly to complete pre-lifting of soil and burdock, so that the burdock and the soil can be tightly held, the situation that the soil on the two sides of the burdock is loosened, so that the strength is insufficient when the burdock is conveyed upwards or the burdock is directly inclined is avoided, and then the strength when the auxiliary coulter ascends for lifting is increased; the distance between the auxiliary coulters does not need to be adjusted, so that interference on burdock caused by too small distance and insufficient lifting force caused by too large distance are avoided.

The invention provides a sand casting coating capable of preventing generation of gray cast iron nitrogen holes and a preparation method thereof.The sand casting coating capable of preventing generation of gray cast iron nitrogen holes comprises a base material and an additive, and the additive comprises, by mass, 15%-35% of basalt fibers, 1%-10% of zirconium oxide microspheres and 40%-50% of aluminum oxide powder; and 0.5%-1.5% of rare earth element powder. The sand mold casting coating has high high-temperature stability, strength, toughness and compactness, a compact protective film can be formed on the surface of a sand mold, and gas in the sand mold is effectively prevented from permeating into molten iron.

The utility model relates to an equal-strength steel truss reinforcing structure of a structural damage PC box girder, and belongs to the technical field of building structure reinforcing. Comprising a steel truss with the same strength as a PC box girder, and the steel truss is of a cuboid space steel truss structure; a plane truss is arranged on the face, opposite to the steel truss, of the web plate, and the plane truss and the steel truss are fixed to the two sides of the web plate through opposite-pull screws. The steel truss is located on the inner side or the outer side of the web. Anchor bolts and steel gaskets are further arranged on the opposite-pull screws to reinforce and fix the steel trusses and the plane trusses and anchor the opposite-pull screws. And the opposite-pull screws are arranged at the joints of the chord members in the steel truss. A steel-concrete transition connecting section is arranged at the end part of the steel truss and is fixed through an opposite-pull screw rod; and the number of the opposite-pull screws on the transition connecting section is determined according to the tensile force borne by the steel truss chord member and the tensile force which can be borne by a single opposite-pull screw. The equal-strength steel trusses are arranged on the box girder in the damaged area, and meanwhile small original structure damage and a strong reinforcing effect are guaranteed.

The invention discloses an ultra-tough wide temperature range damping elastomer composite material and a preparation method thereof, and relates to the technical field of multifunctional composite materials; the preparation method comprises the following steps: (1) dissolving tannic acid in deionized water, then adding calcium chloride to dissolve, freezing treatment, and obtaining solution ice cubes; (2) dissolving disodium hydrogen phosphate dodecahydrate and sodium dihydrogen phosphate with deionized water to obtain a mixed solution; (3) adding the solution ice cubes obtained in step (1) and the mixed solution obtained in step (2) to an aqueous polyurethane solution, stirring until the solution ice cubes are completely melted, vacuum filtering and drying, and obtaining an ultra-tough wide temperature range damping elastomer composite material. The invention prepares a polyurethane composite material by a method of in-situ crystallization enhancement and toughening at a phase interface, which effectively solves the problems of poor mechanical properties, low glass transition temperature and lack of functionality of existing polyurethane composite materials.

A coil member according to an embodiment includes a substrate including a first surface and a second surface opposite the first surface; a wiring pattern disposed on the substrate; and a metal coating pattern connected to the wiring pattern, the metal coating pattern being thinner than the wiring pattern.

The invention relates to the technical field of road roadbeds, and discloses a honeycomb hexagonal anti-waterlogging water storage roadbed structure which is laid on a soil body and comprises a raft foundation laid on the soil body; the water storage units are in a hexagonal prism shape, the side faces of the water storage units are attached to one another and laid on a raft foundation, the bottoms and the tops of the water storage units are each provided with a first water permeable hole and a second water permeable hole, and the six side faces of each water storage unit are each provided with a through hole communicated with the corresponding adjacent water storage unit; the drainage pipeline is arranged on one side of a water storage layer formed by the multiple water storage units on the raft foundation, and the drainage pipeline is used for draining redundant water in the water storage units; according to the honeycomb hexagonal anti-waterlogging water storage road, the unique geometrical shape and material design can enhance the drainage, water storage and pressure resistance of a roadbed, the urban anti-waterlogging problem is solved, and the traffic, infrastructure and economic pressure caused by waterlogging is relieved.

This utility model discloses a tooling for processing medical device accessories, including a main body mechanism and an extension mechanism disposed on one side of the main body mechanism. The main body mechanism includes a base plate, and the extension mechanism includes several side frames symmetrically arranged and fixedly connected to one side of the base plate. A positioning screw is threaded to the inner side of each side frame, and a sliding arm is threaded to the outer side of each positioning screw through an adjusting screw hole. Finally, the corresponding device is installed on one side of the mounting plate through the mating screw hole, and then the active clamping block and the driven clamping block are used to clamp and fix the medical device accessory, and processing begins. It can clamp and limit the two ends of medical device accessories with large length dimensions, effectively reducing the situation where the long-length accessories are subjected to external forces such as cutting forces during processing and the two ends are not sufficiently supported and thus causing positional displacement. While ensuring processing accuracy and quality, it also effectively reduces the scrap rate.

This utility model provides an installation structure for a hair trimmer, including a housing and a blade head. The housing contains a charging component and a power component. The housing includes an upper shell and a lower shell. The lower shell includes a connecting part with a mounting hole. A copper nut is fitted into the mounting hole. The blade head includes a moving blade assembly, a fixed blade, and a spring. The spring is located on the lower shell. The fixed blade has a hole corresponding to the copper nut. A screw passes through the hole and screws the copper nut in, fixing the fixed blade to the lower shell. The moving blade assembly is clamped between the fixed blade and the spring. First, the moving blade assembly and the power component are connected via a transmission rod inserted into a drive slot. Then, the fixed blade is fixed to the copper nut on the lower shell by the screw, creating dynamic pressure on the moving blade assembly. Disassembly only requires removing the screw to remove the fixed blade, enabling quick blade head repair and replacement, avoiding complete disassembly; simplifying the assembly process and improving production line efficiency.

The utility model belongs to the technical field of ventilation devices, and particularly relates to a shutter frame which is formed by integrally bending a plate and provided with a base part, first side walls oppositely arranged on the first opposite two sides of the base part and second side walls oppositely arranged on the second opposite two sides of the base part. The plate is bent on the first two opposite sides along the edge of the base part to form a first flat folding part, and is vertically bent along the first flat folding part to form the first side wall; second flat folding parts are formed on the second two opposite sides of the plate along the edge of the base part, the plate is vertically bent along the second flat folding parts to form the second side wall, the adjacent first side wall and the second side wall are connected with each other, and the integrated frame is high in integrity, so that the sealing performance is good, especially the effective waterproof effect is achieved, the frame is high in rigidity and strength, and the service life of the frame is prolonged. And abnormal sound is not easy to generate.

This invention relates to a compact spring return actuator, and more particularly to an actuator for emergency reset of a valve in the event of an emergency such as a power outage. The actuator is equipped with differential planetary gear reducers in both the drive shaft (operated by a motor) and the working shaft (operated by an elastic body of the emergency reset assembly), and these differential planetary gear reducers are meshed together. This duality allows the power transmission of the motor and the elastic body to be independent of each other, thereby reducing motor capacity and miniaturizing the components of the power transmission system. Ultimately, this results in a compact spring return actuator that is lightweight and miniaturized as a whole. To achieve the objectives described above, the compact spring return actuator of the present invention is characterized by comprising: a drive shaft that receives power from a motor and rotates; a driven shaft that rotates by means of the drive shaft and opens and closes a valve; a reduction assembly that reduces the rotational force transmitted to the driven shaft, including a differential planetary gear reducer mounted on the drive shaft; and an emergency reset assembly equipped with an elastomer and a working shaft that converts the elastic force of the elastomer into a rotational force for transmission and engagement with the differential planetary gear reducer, for rotating and resetting the valve when the power is disconnected.

The utility model relates to the technical field of municipal pipelines, and discloses a municipal pipeline installation support which comprises an installation base, a fixing clamping frame and an installation clamping frame are arranged above the installation base, and the left face and the right face of the fixing clamping frame and the left face and the right face of the installation clamping frame are fixedly connected with connecting pieces. The interior of the fixing clamping frame and the interior of the mounting clamping frame are each provided with a clamping assembly, each clamping assembly comprises an arc-shaped clamping piece, the arc-shaped clamping pieces and first anti-skid gaskets are arranged, so that a pipeline can be clamped conveniently, the pipeline can be fixed in the fixing clamping frame and the mounting clamping frame, and under the action of the first anti-skid gaskets, the pipeline can be clamped conveniently; and under the action of an arc-shaped air bag, when the pipeline expands with heat and contracts with cold, the arc-shaped air bag can make contact with the surface of the pipeline all the time, the anti-skid effect of clamping the pipeline is improved through the inner wall of a second anti-skid gasket, and the pipeline can be fixed in the fixing clamping frame and the mounting clamping frame all the time.

The present invention discloses a portable fire-fighting robot, comprising two track frames, the outer walls of the two track frames are provided with track grooves, and the inner walls of the two opposite sides of the two track grooves are rotatably connected to two rotating rods through bearings near the top, and the outer walls of the rotating rods are fixedly sleeved with driving wheels, one side of the two track frames is fixedly connected to a first driving motor, and one end of the output shaft of the first driving motor is fixedly connected to one of the driving wheels, the inner walls of the two opposite sides of the track grooves are rotatably connected to a plurality of supporting wheels through bearings near the bottom, and tracks are rotatably connected between the plurality of supporting wheels and the two driving wheels. The present invention can greatly reduce the volume and weight of the fire-fighting robot, making it convenient for the fire-fighting robot to rush to the fire scene with the fire truck, and preventing the fire-fighting robot from being inconvenient to transport due to the large volume and weight of the fire-fighting robot, thereby affecting the fire control at the fire scene.

The invention mainly discloses a reinforced supporting sheet and a foldable display comprising the same, and the reinforced supporting sheet is integrated in the foldable display to be attached to the bottom surface of a display panel and is used for supporting the display panel. According to the invention, the reinforced support sheet comprises a substrate and a corrugation structure, and the top surface of the substrate is used for being attached to and connected with the display panel, so that the corrugation structure covers a bending area of the display panel. According to the design, when the display panel is bent, the corrugation structure buffers stress applied to the bending area, so that residual stress accumulated in the bending area is reduced, and creases and cracks in the bending area are avoided. Due to the fact that the corrugated structure has high strength and rigidity, the display panel can be well supported.

The utility model discloses a sound box capable of realizing sound kinetic energy enhancement, comprising a box body and a box body front plate, the box body front plate is symmetrically provided with two tweeters and a mid-bass horn; a ventilation pipe independent cavity partition plate is arranged in the box body, the interior of the box body is divided into independent cavities through the partition plate, and U-shaped ventilation pipes are installed in the cavities. According to the utility model, the trend of air flow is controlled through the cooperation of the components, and a side opening or a reverse opening is reserved at the ventilation pipe by using a partition plate or enclosing the ventilation pipe. In this way, the airflow on the corners of the sound box and the middle airflow can impact the wall opposite to the inner ventilation pipe opening for approximate time and reversely impact (to form nearly doubled speed) to discharge air from the inner ventilation pipe opening, so that the kinetic energy of air movement is superposed and improved, and the low frequency is increased.