2413results about How to "Easy to repair and replace" patented technology

The invention discloses a fabricated concrete column-steel beam energy dissipation type panel point connecting device. The fabricated concrete column-steel beam energy dissipation type panel point connecting device is composed of a beam-beam bolt connection component and a friction energy dissipation device, and comprises a prefabricated concrete column, a pre-buried steel beam, a middle steel beam and a combination connection steel piece, wherein transversal surfaces of the pre-buried steel beam and the middle steel beam are both H-shaped, webs of the pre-buried steel beam and the middle steel beam are connected through a web cover plate, and flanges of the pre-buried steel beam and the middle steel beam are connected through a connection cover plate. Earthquake energy is dissipated by using friction plates attached inside a combination steel piece and through a friction energy dissipation mechanism. Compared with the prior art, the connecting device can reduce adverse effects on a floor and achieve a beam hinge yielding mechanism by moving a plastic hinge outward, the energy dissipation device can improve fabricated structure energy dissipation and reduce damages of main structural members, connection parts and the steel beams can be conveniently maintained, replaced and dismantled for reuse, and simultaneously, the fabricated concrete column-steel beam energy dissipation type panel point connecting device is produced by using a whole prefabricated industrialization standard, and installed only through bolts on site, and has strong engineering practicability.

The invention relates to technical field of a watch, and provides a watch, which comprises a dial plate and two watchbands, and further comprises two groups of elastic latch components, wherein the dial plate, close to two ends of the two watchbands, is respectively provided with accommodating cavities; the various accommodating cavities are provided with first openings on the side faces; the accommodating cavities are provided with second openings, which are communicated with the first openings, on the back face; the various groups of the elastic latch components extend into the accommodating cavities from the second openings; a female latch is arranged at one end of each of the watchband; and the female latches are clamped with the elastic latch components from the first openings. According to the watch disclosed by the invention, the watchbands can be rapidly mounted since the female latches are clamped with the elastic latch components, and the watchbands can be rapidly detached and picked just by lightly pressing the elastic latch components so that the elastic latch components are removed away from the female latches; the watch of the mounting structure is simple, easy to detach and mount and is convenient to repair and change the watchbands; and meanwhile, the watch, when worn in left or right hand, is convenient to change the directions of the two watchbands, so as to greatly facilitate the use of the watch.

The present invention discloses an improved rotary forced-air cooler, which comprises a double layer trolley, a supporting beam structure, a material blocking proof air duct sealing plate arranged at the connecting part of the double layer trolley and an air supplying system, a double layer trolley unit static seal device and an air duct device. The supplying system structure is based on a rectangular beam, a triangle beam is arranged on the rectangular beam, and a plurality of ventilation channels are arranged on the bevel edge steel plates at the both waists; an air duct pipe is arranged on the air vent of the material blocking proof air duct sealing plate, an inclined plate inclining upwards from the air vent at the bottom part of the air duct pipe has a transition to a horizontal plate, a stopping ventilation fence is added to the air duct pipe at the side of the trolley; two rubber sealing parts with extended bottom edges are arranged at the outer sides of the lower parts of inner and outer sealing plates of the double layer trolley unit static seal device, an ash baffle plate which can move up and down is hung at the inner side; an air water sealing wave subduing device adopting a damping plate is arranged on the air duct device. The present invention further improves the sealing performance of the equipment, and reduces energy consumption and pollution.

The invention discloses a two-fluid atomization nozzle which comprises a fluid joint, a liquid spinning disk, a two-fluid atomization cavity and a sprayer, wherein the sprayer is internally provided with a hollow cavity; one end of the hollow cavity is provided with an opening and the other end of the hollow cavity is provided with spray holes; the two-fluid atomization cavity, the liquid spinning disk and the fluid joint are sequentially assembled towards the opening in the hollow cavity; the two-fluid atomization cavity is internally provided with a first gas runner and a first liquid runner; an atomization cavity is formed at the junction of the first gas runner and the first liquid runner and is communicated with the spray holes; the liquid spinning disk is arranged at the liquid inlet end of the first liquid runner; the liquid joint is internally provided with a second gas runner and a second liquid runner. Therefore, the two-fluid atomization nozzle is formed by detachably assembling multiple split components, so that the replaceability of local atomization components is realized and the maintenance and replacement costs are lowered; furthermore, the two-fluid atomization nozzle can well ensure the high atomization rate and atomization degree of liquids.

The invention relates to a flat-joint and detachable type roof deformation joint and a construction method thereof, and belongs to the technical field of buildings. The deformation joint is characterized in that the interiors of reinforced concrete structure beams at the two sides of the deformation joint are embedded with round steel, each reinforced concrete structure beam is provided with an angle iron, the outer side of each angle iron is provided with a concrete retaining sill, each angle iron is provided with an additional waterproof layer, a detachable rubber water stop belt is arranged between the two angle irons above the deformation joint, and is provided with a steel plate pressing strip, the steel plate pressing strip, the detachable rubber water stop belt and the angle irons are screwed, fastened and connected through nuts and threads at one ends of the round steels, a roof waterproof layer is provided with a roof heat insulation layer, a leveling layer and a roof rigid protecting layer, a deformation joint heat insulation layer is arranged between the two angle irons, a cover plate is arranged in the roof rigid protective layers, a gap is formed between the cover plate and the roof rigid protective layer, a flexible plate strip is arranged in the gap, and the upper part of the flexible plate strip is fully embedded with sealant. The deformation joint has the advantages that the setting requirements of various deformation joints, such as earthquake-proof joints, telescopic joints and settlement joints, are met, the strength is high, the wear-resisting performance is good, and the maintenance is convenient.

The invention relates to the technical field of quality-divided water purification and supply, in particular to a combined type quality-divided water purification and supply device, the inside of which is formed by three layers of multifunctional quality-divided water purification annular sleeve barrels and a four-layered quality-divided water supply chamber with different functions, wherein the three layers of multifunctional quality-divided water purification annular sleeve barrels respectively contain high-quality direct drinking water of an internal layer, middle-quality domestic water of a middle layer and elementary wash water of an external layer and have different functions; the inner walls of the barrels are provided with small round holes or linear wall slot lines as well as round oblique diversion tunnels of a water-proof backflow round baffle and a vertical water diversion baffle arranged outside the tunnels; an ultraviolet lamp and a most advanced annular filtration barrel component are arranged at the lower bottom part of the middle of the barrel; the upper end and the lower end of the barrel are respectively and fixedly installed in an upper and a lower fixed holding slot components; annular permanent magnetic and tourmaline gaskets are installed at the upper sides of the outsides of the holding slot components; and regulating rings capable of regulating the size and the flow of pores and the water-proof backflow baffles are respectively arranged in a water inlet passage and a water outlet passage of an upper cover shell and a lower cover shell. The invention has unit modular industrialized production, can be assembled on site according to the requirements, has ingenious design and complete functions, low cost and obvious effect, is widely used and is conveniently maintained and changed, all the water is utilized without waste, and filter mediums can be repeatedly used.

The invention discloses a control system for a stackable multi-color-head three-dimensional printer capable of realizing precision printing. A plurality of color heads of the stackable multi-color-head three-dimensional printer are used for separating hardware parts of a control loop and a heating control loop of each wire feeding pump from a motherboard to form a modular plug-board structure capable of easily ensuring the symmetry consistency; the modular plug-board structures are respectively plugged into interface slots of a heating system and a multi-color control system on the motherboard; by virtue of the symmetry consistency of technical indexes and parameter values of each wire feeding pump, multi-color fuse wires can be fused without temperature difference in a sprayer nozzle when a multi-color-head three-dimensional workpiece is printed, color wires are extruded, and high printing precision is realized. The mechanical strength of the printed workpiece reaches mechanical strength indexes of a material. Meanwhile, the control system is convenient to maintain and replace, simple in structure, stable and reliable; resources are saved, and the energy consumption and the cost are reduced.

The invention relates to self-reset shear walls with replaceable coupling beams and belongs to the field of aseismic structure systems. The self-reset shear walls are composed of replaceable coupling beams and self-reset shear wall bodies connected with the replaceable coupling beams. The replaceable coupling beams are composed of replaceable sections and non-yielding sections, and the self-reset shear wall bodies are post-tensioned un-bonded pre-cast shear walls. According to the self-reset shear walls, the concept is clear, construction is convenient, the safety of main body structures can be effectively protected during middle earthquakes or major earthquake, repair and replacing of damaged members after earthquakes are facilitated, and the self-reset shear walls are applicable to important building structures in high-intensity earthquake regions.

The invention discloses a method and a system for positioning dead pixel positions of an LED display screen. The method comprises the following steps of: A, setting a coordinate value of each pixel point in the LED display screen and composition structure data of the LED display screen; B, detecting the display data of each pixel point in the LED display screen; C, judging whether each pixel point is a dead pixel according to the display data, if so, determining the coordinate value of each dead pixel; D, determining the position of each dead pixel in the LED display screen according to the coordinate value of each dead pixel and the composition structure data of the LED display screen to obtain position data of each dead pixel; and E, displaying the position data of each dead pixel, and indicating the position of each dead pixel. The system is correspondingly provided with a detection unit, a processing unit, a display unit and a plurality of indicating units. The method for positioning the dead pixel is simple, and can quickly find the specific position of each dead pixel so as to maintain and replace the dead pixel.

The invention provides a no-cylinder-cover double-combustion-chamber horizontal type four-stroke internal combustion engine which comprises a cylinder body, special-shaped pistons, a crank-link mechanism and a valve seat air distributing system. An air cylinder is arranged inside the cylinder body. Two special-shaped piston heads are arranged inside the air cylinder in a butt joint mode. The special-shaped piston heads are connected with the crank-link mechanism and then connected with the valve seat air distributing system in a gear meshing mode so that the two special-shaped pistons move synchronously in the opposite direction in the air cylinder, and therefore the two special-shaped pistons, the crank-link mechanism and the valve seat air distributing system finish the four-stroke motion together. Moreover, four piston grooves and two piston top inclined faces are arranged in the positions of heat power banks of the special-shaped pistons to avoid opening and closing of a valve of the valve seat air distributing system. When the special-shaped pistons run to the top dead center of a compression stroke, two combustion chambers with the same size are formed in the positions of the gaps of the pistons top inclined faces and the valve. The no-cylinder-cover double-combustion-chamber horizontal type four-stroke internal combustion engine has the advantages of being high in compression ratio, high in rotating speed, stable in operation, large in torque power and long in service life, does not knock easily, saves energy, reduces emission, is green and protects environment.

The invention provides a method for diagnosing common disconnection faults of a brushless direct current motor inverter. The diagnosing process includes detecting currents of a current stage, and determining a conducting state matrix of the current stage; outputting fault bit signals according to current detection signals of the current stage; calculating a sum matrix Q of a conduction matrix in a period before the current stage, and diagnosing the number and positions of fault tubes by judging the number and positions of 0 elements in the sum matrix Q; and outputting fault types, fault tube positions and fault bits as diagnosis results. According to the method for diagnosing common disconnection faults of the brushless direct current motor inverter, faults can be detected in time and fault positions can be diagnosed when disconnection faults happen to the brushless direct current motor inverter, maintenance and changes for fault switching tubes by technical staff are facilitated, a system can be switched to a fault-tolerant operation mode to operate continuously, and the method has high practical application values in industrials of aviation, aerospace, automobiles and the like with high reliability requirements.

The invention discloses an automatic cold water and hot water diverting valve, which comprises a valve body provided with a valve cavity, wherein the valve body is provided with a water inlet, a cold water outlet and a hot water outlet that are communicated with the valve cavity; a piston type valve core is further arranged in the valve cavity; two-way shape memory alloy is further connected between the valve core and the valve body; a phase transition temperature of the two-way shape memory alloy is 40-55 DEG C; when the temperature of the two-way shape memory alloy is less than the phase transition temperature, the valve core can block the hot water outlet and communicate the water inlet with the cold water outlet; and when the temperature of the two-way shape memory alloy is greater than the phase transition temperature, the deformation occurs so that the valve core can displace to block the cold water outlet and communicate the water inlet with the hot water outlet. The automatic cold water and hot water diverting valve can automatically divert a cold water part in a hot water supply pipe so as to save water and avoid waste; and further the automatic cold water and hot water diverting valve is simple and compact in structure, low in cost and convenient to install, and achieves the automatic control.

The invention discloses a seawater corrosion-resistant low alloy cast iron, which is mainly used for manufacturing components in seawater hydraulic projects. Adopting the weight percentage as unit, the seawater corrosion-resistant low alloy cast iron comprises 0.6 to 1.6 Ni, 1.5 to 3.0 Cr, 1.8 to 2.8 Si, 2.8 to 3.6 C, 0.6 to 1.0 Mn, 1.5 to 3.0 Cu, 0.1 to 0.3 RE, less than or equal to 0.4 Al, less than or equal to 0.1 Sb, less than or equal to 0.12 P, less than or equal to 0.06 S, and remaining part of Fe. The seawater corrosion-resistant low alloy cast iron has the advantages of improving corrosion resistant performance due to joint action of the cast iron chromium, nickel, copper and other alloy elements, reducing nickel content and cost, and improving corrosion resistant performance of the seawater corrosion-resistant cast iron compared with the Ni-Cr alloy corrosion resistant cast iron.

The invention discloses a concrete filled steel tube row column shear wall with a structural steel support and a manufacturing method thereof. The shear wall comprises prefabricated concrete filled steel tubular columns arranged at certain intervals, structural steel supporting components, sleeve connecting components for connecting structural steel and concrete filled steel tubes, concrete poured into a wall space in a filling mode, and steel bar nets which are used for preventing early cracking of the concrete and arranged on two sides of a wall body in advance. The shear wall gives full play to the good axial compressive performance of the concrete filled steel tubular columns. The rigidity of the wall body is increased due to addition of the structural steel supporting components. A rubber pad layer is arranged in each sleeve connecting component, so that partial damage at the joints of the concrete filled steel tubular columns and the supporting components is reduced to a certain extent. Bulging of steel tubes is restrained due to the hooping function of sleeves to the concrete filled steel tubes, and the three layers of defenses including the concrete, the structural steel support and the concrete filled steel tubes are formed. The combined shear wall has high bearing capacity and a good anti-seismic property, most of the components are prefabricated components and are convenient to splice after being conveyed to a construction site, and work time is saved.

The invention discloses a segmental observation system for the growth height of a top-board water guiding fissure zone. The segmental observation system comprises a detection system, a plugging system and a supply determination system, the detection system comprises a test probe, the test probe is formed by connecting detection units successively, the adjacent detection units are detachably connected via a slot joint, each detection unit comprises a water inlet pipe, a water return pipe, a pressure regulator valve and an electronic flow meter, the two ends of the water inlet pipe and the two ends of the water return pipe of the detection unit in the middle/tail portion are clamped on the slot joints respectively, one end of the water inlet pipe and one end of the water return pipe of the detection unit in the front portion is connected to the slot joint, the other end of the water inlet pipe and the end of the water return pipe of the detection unit in the front portion is connected to a U-shaped pipeline, and the water current pressure in each detection unit is kept equivalent. The test probe is provided with multiple units, the pressure regulator value is used to regular the pressure, it is ensured that the pressure of each detection unit is kept equivalent, and bores can be measured synchronously due to existence of the detection units.

The invention discloses a method for processing a rectangular-tooth spline sleeve using 42CrMoE high-quality alloy steel as a material, belonging to the technical field of thermal treatment. The method comprises the steps of: free forging of a blank, normalizing treatment, rough turning, hardening and tempering thermal treatment, finish turning, spline drawing, drilling, burr gripping, carburization treatment, surface deposition treatment, phosphorylation treatment, electroplating, drying and detection. In the invention, due to the new material and new technology, the wear resistance of the produced rectangular-tooth spline sleeve is greatly enhanced, the phenomenon of crack of the rectangular-tooth spline sleeve is avoided, the surface is smooth, the friction is low, the heat dissipation is good, and the service life is prolonged, thus the processing technology is widely applied.

The invention relates to a device for metering thickness, in particular to a magnetic levitation type slice medium thickness detecting device. The magnetic levitation type slice medium thickness detecting device comprises a fixed frame, a reference shaft, a detection idler wheel mechanism, an elastic packaging board and a magnetic sensor. The fixed frame is provided with a pair of installation side walls and a base board, and a placing slot is arranged in the base board. Two ends of the reference shaft are installed on the pair of installation side walls of the fixed frame through bearings, and a reference roller is fixedly sleeved on the reference shaft. The detection idler wheel mechanism comprises a support frame, and an idler wheel is arranged on the support frame through a bearing, a magnetic element is fixed on a side surface, corresponding to the idler wheel, of the support frame, and the detection idler wheel mechanism is freely placed in the placing slot of the fixed frame. The elastic packaging board is fixedly arranged on the base board of the fixed frame, the detection idler wheel mechanism is packaged in the placing slot and provides elasticity for keeping close to the reference roller for the idler wheel, and a position, corresponding to the magnetic element of the detection idler wheel mechanism, of the elastic packaging board is provided with a magnetic penetrating hole. The magnetic sensor corresponding to the position of the magnetic penetrating hole is fixed on the fixed frame and used for detecting displacement of magnets in a non-contact manner.

The invention provides a modular street lamp, which comprises a lamp cap, wherein the lamp cap comprises at least one group of street lamp modules and dustproof covers, and the dustproof covers cover the street lamp modules; wiring ducts and cover plates of the dustproof covers are arranged on the dustproof covers, and the dustproof covers and the cover plates of the dustproof covers form cavities to accommodate cables. The invention has wide application range, adopts modular design, facilitates maintenance and replacement, can prevent the accumulation of large-particle dust, falling leaves, wastepaper, fabrics, droppings and the like on the heat dissipating body of the lamp, and ensures that the LED street lamp has long service life and normally works in outdoor harsh environments.

The invention discloses a non-inflation low-speed cross-country vehicle tire, which solves the problems that in the prior art, the tire can easily burst; the service life is shorter; the cost is higher. The non-inflation low-speed cross-country vehicle tire has the effects that the structure is simple; the maintenance and the replacement are easy; the damage of complicated road conditions to the tire can be effectively avoided. The non-inflation low-speed cross-country vehicle tire has the technical scheme that the non-inflation low-speed cross-country vehicle tire comprises a wheel rim, an inner ring and an outer ring, wherein the outer ring is formed by connecting a plurality of tire surface units through end-to-end connection; the inner ring is connected with the wheel rim and the outer ring through a plurality of air springs; when the tire rolls, the compressed tire surface units leave away from the ground; the air springs automatically bounce up.

The invention discloses a screw extrusion type sludge dewatering machine, comprising a machine base (1), a water inlet part, a sludge exit part (41), a water outlet part, a screw shaft (2) with a spiral blade (21), as well as a filter disc assembly composed of a plurality of annular static filter discs (5) and annular dynamic filter discs (6) in a cross-interval arrangement; wherein, each static filter disc (5) is fixed relatively to the machine base (1); the internal diameter of each dynamic filter disc (6) coincides with the external diameter of the blade (21) and has line contact with the blade (21); moreover, the space between two adjacent static filter discs (5) is slightly greater than the thickness of the dynamic filter disc (6) between the two adjacent static filter discs (5) so as to form a gap (7) between the static filter discs (5) and the dynamic filter disc (5); water can flow through the gap (7). Compared with the prior art, the invention enables water to directly flow out through the gaps of the filter disc assembly so as to avoid the abrasion to the static filter discs and the dynamic filter discs caused by sludge; the device has a longer service lifer and adopts only one power source to realize solid-liquid separation, so that the energy consumption is lower; besides, the components of the device are easy to install and simple in structure to facilitate actual implementation.