36results about How to "Improve compression stability" patented technology

The invention provides a thermo-mechanical coupling loading method for thermal strength tests, which can be used for achieving high temperature and large temperature rise rate and simulating unequally distributed loads. The technical scheme is as follows: the method comprises the following steps: arranging a quartz burner in front of a test piece loading area, wherein a gap is formed between the quartz burner and the test piece loading area, and a gap area is reserved in the arrangement area of the quartz burner; hinging a loading block at the front end of a mandril, wherein the loading block penetrates through the gap area of the arrangement area of the quartz burner and props against the surface of the test piece loading area; heating the test piece loading area via thermal radiation by using the quartz burner; and loading mechanical load on the test piece loading area by using the loading block.

The invention discloses a steel box beam orthotropic deck slab. The steel box beam orthotropic deck slab comprises an upper top plate, a corrugated steel plate and a lower top plate which are sequentially connected from top to bottom. The corrugated direction of the corrugated steel plate is consistent with the transverse bridge direction. The corrugated steel plate is composed of crest surfaces, trough surfaces and inclined planes connected with the crest surfaces and the trough surfaces, wherein the crest surfaces, the trough surfaces and the inclined planes are staggered in the transverse bridge direction. Included angles of the inclined planes and the crest surfaces and included angles of the inclined planes and the trough surfaces are not 90 degrees, and the corrugated cross section of the corrugated steel plate is a plurality of continuously arranged trapezoids. The corrugated steel plate is utilized to serve as a longitudinal stiffening rib of a steel box beam deck top plate, the orthotropic slab formed by the upper top plate, the lower top plate and the middle layer corrugated steel plate is similar to a parallel chord truss with an inclined web member in the transverse bridge direction, pressure resistance stability and transverse flexural rigidity of the deck slab are improved, and excessive local deformation under the effect of a concentrated wheel load is effectively avoided. According to the steel box beam orthotropic deck slab, a traditional welding mode is abandoned, bolting is adopted completely, and the problem of fatigue cracking of welding cracks can be solved thoroughly.

The invention discloses a garbage treatment device. The garbage treatment device comprises a stand, a compression device and a bracket; the bracket comprises support columns equally arranged front and back, and a beam column fixed between the tops of the support columns; the stand is arranged between the bottoms of the support columns below the beam column; a first chute for extending front and back is formed in the bottom surface of the beam column; a first spiral rod for extending front and back is arranged in the first chute, and is spirally matched and connected with a first slide block; the bottom of the first slide block is fixedly connected with the top end of the compression device; a conduction cavity is formed in the compression device; an opening cavity communicates with the bottom of the conduction cavity; and a turntable is arranged on the back side wall of the compression device. The garbage compression device is simple in structure, reasonable in design and low in manufacturing and maintenance costs, can realize zoned garbage compression to achieve convenient to operate, can realize automatic extension compression to achieve excellent compression effect, and can realize automatic garbage fixation to improve the compression stability.

The invention relates to frost-resistant concrete and a preparation method thereof, and belongs to the technical field of concrete. The adopted technical scheme is that the frost-resistant concrete isprepared from the following components in parts by weight: 295 to 320 parts of cement, 945 to 970 parts of gravels, 880 to 915 parts of modified pottery sand, 165 to 180 parts of silicon micro powder, 225 to 245 parts of coal ash, 75 to 90 parts of slag powder, 0.3 to 1.5 parts of an air entraining agent, 9 to 14.5 parts of a water reducing agent and 165 to 195 parts of water. The formula of thefrost-resistant concrete is simple, high in frost-resistant durability and suitable for being applied to various engineering projects in alpine areas.

The invention discloses a prefabricated assembly type double-steel pipe concrete shear wall and an assembly method thereof. The double-steel pipe concrete shear wall comprises outer steel pipes buried in the concrete wall and a steel bar net buried inside the concrete wall and formed by interweaving of knot pulling steel bars, vertically-distributed steel bars and horizontally-distributed steel bars; the upper and lower ends of the outer steel pipes partially extend out of the upper portion and the lower portion of the concrete wall; inner steel pipes are sleeved with the outer steel pipes; the inner steel pipes are filled with high-strength concrete columns; and the parts, extending out of the concrete wall, of the outer steel pipes and the inner steel pipes are radially penetrated through and fixed through transverse bolts to prevent axial and circumferential relative motion between the parts, extending out of the concrete wall, of the outer steel pipes and the inner steel pipes. The double-steel pipe concrete shear wall has the advantages of being quick and reliable in vertical connection, simple in construction technology, high in horizontal shear resistance bearing capacity, good in integrity, high in out-plane stability, good in seismic performance and short in construction period, and most components can be subjected to standardized production.

The invention discloses a sandwich structure of a corrugated square tube core body and a preparation method thereof and relates to the technical field of compound structural materials. The sandwich structure of the corrugated square tube core body is composed of an upper panel, the corrugated square tube core body and a lower panel. According to the sandwich structure disclosed by the invention, a straight tube core body is replaced by the corrugated square tube core body. The mechanical characteristics such as specific strength and specific stiffness of the structure are further improved based on the straight tube core body structure and the coefficient of heat conduction of channel flowing based on a transition flow is increased by 50% or more, and meanwhile, as the contact area of the square tube core body and the upper and lower panels can be designed according to the demand of a shear property without processing a special welding platform on core body, the processing technology is simplified. The structure disclosed by the invention has high specific strength, high specific stiffness and excellent heat conduction characteristic, and has a wide application prospect in the fields of space flight and aviation, ships, automobiles, machinery and civil engineering, and in particular in a load-carrying structure with a heat conduction requirement.

The invention discloses a standard knot of a tower crane. The standard knot comprises a main chord (3), wherein the main chord (3) is in butt joint with at least four cross web members (1), the cross web members (1) are uniformly fixed on the main chord (3) to respectively form a closed frame, one end of a diagonal web member (2) in each frame is in lap-joint on the center of the cross web member (1), the other end of the diagonal web member (2) is in lap-joint to a joint of the cross web member (1) and the main chord (3) correspondingly, and two diagonal web members (2) are fixed to be splayed in each frame. Compared with the prior art, the standard knot of the tower crane, disclosed by the invention, has the advantages that a connecting form of the diagonal web member and the cross web members in the standard knot is optimized, the distance between connecting knots is greatly reduced, the stability of the standard knot is improved, and the integral performance of the tower crane is improved.

The invention relates to core-shell composite particles, the core being a porous, carbon-based matrix containing silicon particles and the shell being non-porous and being obtainable by the carbonization of one or more carbon precursors, the silicon particles having average particle sizes of 1 to 15 Mum.

The invention relates to a linkage compression type pump body gas tightness detecting clamp. The linkage compression type pump body gas tightness detecting clamp comprises a baseplate, wherein a detecting air cylinder is fixed on the rear side of the baseplate; a horizontal baffle is arranged at the middle part of the baseplate; a longitudinal round hole is formed in the middle of the baffle; a pump body is communicated in the round hole; a compressing air cylinder is fixed on the front side of the baseplate; a left linkage compressing device and a right linkage compressing device are arranged in the middle of the baseplate and are symmetrically arranged on the left side and the right side of the axis of the compressing air cylinder. According to the invention, the linkage compression type is adopted, so that the number of the air cylinder is reduced, the production cost is reduced, and the convenience for detection is increased; the synchronism of devices on the compression of the pump body is improved, the pump body offset phenomenon caused due to the pump body compressed by a plurality of independent air cylinders respectively can be avoided, the pump body don't need to be adjusted and calibrated by the detecting air cylinder, and the detection efficiency and the production efficiency can be improved.

The invention discloses a harmless collection, storage and transportation whole-process supervision method and supervision system for livestock and poultry died of illness, and the supervision method comprises the following steps: carrying out the size measurement and weighing of each livestock and poultry died of illness, and then collecting the data obtained through measurement; the livestock and poultry died of illness are placed into a hazardous waste turnover box after measurement is completed, and meanwhile collected information of the livestock and poultry died of illness is input into the hazardous waste turnover box in real time; the hazardous waste turnover box is placed in the refrigeration house after being full, and information of livestock and poultry died of illness in the hazardous waste turnover box is input into the refrigeration house; when the inventory of the refrigeration house reaches the upper limit, the hazardous waste turnover boxes are transferred to a disposal site through a transfer trolley, then the hazardous waste turnover boxes are unpacked, and the livestock and poultry died of diseases in the hazardous waste turnover boxes are treated in a centralized mode; and after unpacking is completed, the transfer trolley conveys the vacant hazardous waste turnover box into a disinfection workshop for disinfection. The method can effectively reduce the workload of weighing dead livestock and poultry for a long time, and has the characteristics of high processing efficiency, convenience in supervision and traceability, and low health risk and environmental pollution risk.

The invention relates to the technical field of mobile phone antennas, in particular to an assembling, welding and pressing jig for a 5G communication mobile phone antenna FPC. The assembling, welding and pressing jig for the 5G communication mobile phone antenna FPC comprises a fixture base and a fixture gland; positioning holes are formed in the corners of the upper surface of the fixture base; a plurality of limiting grooves are evenly formed in the upper surface of the fixture base; PCB boards and FPC boards are placed in the limiting grooves respectively; clamping grooves are correspondingly formed in the upper surface of the fixture base and located between the limiting grooves; positioning columns are correspondingly arranged at the corners of the bottom of the fixture gland; a plurality of PIN ejector pins are evenly arranged in the positions, corresponding to the limiting grooves, at the bottom of the fixture gland; automatic rotary knobs are arranged in the positions, corresponding to the clamping grooves, at the bottom of the fixture gland; the tops of the automatic rotary knobs penetrate through the bottom of the fixture gland and extend to the positions above the fixture gland. According to the assembling, welding and pressing jig for the 5G communication mobile phone antenna FPC, through the design, the overall convenience, stability and practicability of welding of the PCB boards and the FPC boards can be improved.

The invention discloses a guide device of a compression type garbage transfer station. The device comprises a pressure head, a garbage compression box and a first telescopic cylinder, wherein the pressure head is positioned above the garbage compression box; and the top of the garbage compression box is provided with an opening allowing the pressing head to be pressed in. Supporting columns are arranged at the four corners of the garbage compression box correspondingly. A first rail is arranged on the inner side of each supporting column; a pressure head guide sliding block connected with thepressure head is slidably connected into the first rail; a first height detection sensor is arranged at the upper end of the inner side of each first rail; the lower end of the first telescopic cylinder is connected with the upper end of the pressure head; electric telescopic push rods parallel to the axis of the first telescopic cylinder are arranged at four corners of the lower end surface of the oil cylinder structure; and telescopic ends of the electric telescopic push rods point to the pressure head. Guiding is smooth, it is ensured that the acting force of the pressure head is stably applied to garbage blocks, the compression stability is improved, the compaction density of the garbage blocks is improved, and the garbage transportation cost is reduced.

The invention discloses a stable solution method for realizing multipath video input by a single PC. The stable solution method disclosed by the invention comprises the following steps: step 1, a main process of an application program creates a command line parameter for starting a capture process, wherein the contents of the command line parameter comprise a window handle of the main process for inter-process communication, an identification serial number of the capture process, and a camera serial number to be captured, and then starting the capture process through the command line parameter; step 2, analyzing the window handle of the main process for inter-process communication, the identification serial number of the capture process and the camera serial number to be captured from the command line parameter, and then calling a capture function provided by a DirectShow framework of the Windows to start the capture; and step 3, combining the captured data with the identification serial number of the capture process, sending the same to the window handle transmitted by the command line parameter through SendMessage, receiving the window handle by the main process and carrying out subsequent processing. According to the stable solution method disclosed by the invention, the multi-process technology is adopted to simplify the collection process and improve the compression stability.

The invention relates to a zip-top can compression recycling and automatic coin discharging device which comprises a box body, a rotating device, a flange coupling, a pressing rod, a perforated channel steel support, a coin discharging device and a box body bottom plate with the adjustable inclination. The rotating device is fixed to a disc through six cylinders which are completely symmetrical, the rotating device is similar to a rudder in shape, and the pressing rod takes a plunger, deviating from the axis, of the plunger pump to do reciprocating motion and makes sliding contact with a rotating inclined plane with the circle center passing through the axis, so that the pressing rod is pushed to do linear motion. The perforated channel steel bracket is used for fixing the compression mechanism rotating shaft and the compression rod to be in a parallel state; the coin outlet device is composed of a compression-limiting mechanism, a deflector rod and a reset spring. The zip-top can compressing, recycling and coin discharging device is attractive, environmentally friendly and high in interestingness, the public can conveniently and easily achieve the compressing function through the rotating device, the compressed zip-top cans can be conveniently collected through the inclined plate at the bottom of the box, and the environment protection awareness of the public is more stimulated through coin discharging setting.

The invention discloses a construction method of a structural combined ice column with a bamboo framework. The construction method comprises the following steps: designing and processing each plate sheet of a timber formwork; forming filling holes in the same side of each bamboo joint section of the hollow bamboo wood; transporting the hollow bamboo wood to a required position of the polar region; pouring liquid water into the bamboo joints from each filling hole; after the water is solidified to form an ice body, symmetrically arranging the hollow bamboo wood to form a circle; bending a long bamboo chip, and hooping the long bamboo chip onto the outer side of the symmetrically arranged bamboo wood; binding with binding wires to form the bamboo framework; transversely inserting one end of a prefabricated steel nail body into the ice body in the hollow bamboo wood from the outer wall of the hollow bamboo wood; transversely inserting one end of the prefabricated steel nail body into the ice body in the hollow bamboo wood from the outer surface of the long bamboo chip along the long edge direction of the long bamboo chip; and assembling the timber formwork on site, placing the bamboo framework in the assembled timber formwork, adding the liquid water into the timber formwork, and after the ice column main body is formed, removing the timber formwork. Local materials can be used and can be recycled, and therefore, environmental pollution to the polar region environment is avoided.

The invention discloses a composite soft magnetic material and a preparation method thereof, which relate to the technical field of composite soft magnetic materials. Metal magnetic powder and a low-melting-point insulating material are mixed to prepare a powder core, the powder core is placed in a vacuum furnace or an atmosphere protection furnace, and heat treatment is performed at 200-700 DEG Cfor 5 minutes to 5 hours to obtain a composite soft magnetic material finished product. The insulating material disclosed by the invention plays a role in insulation and as an adhesive, so that morematerials are saved, the manufacturing process is simpler, and the compounded material is higher in compressive stability.

The invention discloses a flexible plate pressing mechanism and a plate clamping and positioning tool. The flexible plate pressing mechanism comprises a plate pressing base and at least two plate pressing assemblies, wherein a positioning sleeve is arranged on the plate pressing base, each plate pressing assembly comprises a pressing plate and an elastic plate, each elastic plate is of an arch-shaped structure, the two ends of each elastic plate act on the corresponding pressing plate, the pressing plates are installed on the positioning sleeve through connecting structures, the plate clamping and positioning tool comprises a positioning plate, a pressing plate supporting plate, an upper pulling plate and a lower pulling plate and further comprises a flexible plate pressing mechanism, the flexible plate pressing mechanism is installed on the pressing plate supporting plate through an adjusting lead screw, and a plate containing cavity is formed among the positioning plate, the upper pulling plate, the lower pulling plate and the pressing plate. The flexible plate pressing mechanism and plate clamping and the positioning tool are simple and compact in structure and convenient to operate, the position of the pressing plate is adjusted by adjusting the adjusting lead screw, the pressing plate can be completely attached to a plate, the contact area of the pressing plate and the plate is increased, the plate is evenly stressed, and stable pressing of the plate, especially the plate with the bending radian, can be achieved.