363results about How to "Reduce the amount of welding" patented technology

The invention relates to a corrugated web plate H-shaped profile steel composite bean, belonging to the technical field of building profile materials . The cross section port type comprises a corrugated web plate and an upper and lower flange joints. The upper flange is in parallel with the lower flange; the web plate is vertical to the upper flange and the lower flange; the web plate is connected with the flanges by single-sided fillet weld; the web plate is a trapezoid ripple or a sine curve ripple, wherein the lengthwise direction of the trapezoid ripple is repeated periodically. The upper part of a composite beam is a reinforced concrete swing plate and a profiled steel sheet. The upper flange, the reinforced concrete plate and the profiled steel sheet are connected by a plurality of studs; the reinforced concrete swing plate can be connected with the profiled steel sheet by additional lateral steel bar. The traditional hot-rolling joist steel and H-shaped profile steel composite beam can be replaced by the corrugated web plate H-shaped profile steel composite bean which has the wider application than joist steel and H-shaped profile steel composite beam; the maximization can be realized for special field and special location comprising the construction of large span industrial and civil building and large span bridge.

The invention discloses a composite bridge deck applied to long-span bridges and city bridges. The composite bridge deck comprises a bridge deck body, wherein the bridge deck body is formed through combining a lower wave-shaped steel plate and an upper concrete slab; shear connectors which are symmetrically welded to wave crests of the wave-shaped steel plate upwards extend into the concrete slab; reinforcing steel bars and annular hoop reinforcements which are used for bundling up the reinforcing steel bars are arranged at the middle part of the concrete slab in a balanced manner. According to the composite bridge deck, the characteristics of the wave-shaped steel plate and the characteristics of the concrete slab are combined together, properties of materials are fully utilized, the flexural bearing capacity is enough under heavy loads, the deformation is small enough under the action of concentrated loads, and too-large secondary stress resulting from weld seams can be avoided; a top plate of a steel bridge deck is replaced with the concrete slab, so that the construction cost of a bridge floor system can be reduced; the quantity of welding is very small, so that the damage to the bridge deck caused by defects of a welding process can be reduced; due to the wrinkling effect of the wave-shaped steel plate, the problem that the deformation of the steel plate and the deformation of concrete are non-synchronous can be greatly solved, and the cracking of the transverse bridge direction of the bridge deck is avoided.

The invention discloses an automatic submerged arc welding method for a pearlitic heat-resistant steel composite board. The significant advantages are achieved by changing the welding method and the groove type and adjusting the welding sequence. The automatic submerged arc welding method has the significant advantages that by optimizing the groove type, the welding material filling quantity is reduced, and the welding efficiency is improved; a mechanical mode is adopted to conduct groove machining and welding seam back chipping, parent metal hardening caused by rapid heating and rapid cooling of thermal cutting or carbon arc air gouging is effectively avoided, and the rolling machining and welding quality of a barrel is improved; outer edge back chipping is conducted immediately after inner edge base layer welding is completed, welding stagnation and reheating in the middle can be effectively avoided, and the welding quality is guaranteed; transition layer welding is conducted immediately after base layer welding is completed, composited layer welding is conducted after crack detection is qualified, repeated preheating and transition layer welding which are conducted after nondestructive detection of previous base layer welding is completed and qualified can be effectively avoided, and the composited layer welding quality is improved.

The invention relates to a spiral plate heat exchanger made of two steel plates through coiling and a production method thereof. The spiral plate heat exchanger is designed to mainly solve the problem of the existing spiral plate heat exchanger that the welding amount is large and the leakage points are in a large quantity. The upper edge and the lower edge of the two spiral plates for forming a spiral body are respectively bended outward and lapped on the end face of the adjacent spiral plate and then welded and sealed, and a strengthening seal angle is additionally arranged at the angle part between the spiral plate and a division plate. The production method comprises the following steps: coiling two pieces of steel plates into a spiral body, forming two uniform spiral channels, arranging a division plate in the middle of the spiral body, respectively welding and sealing the two edges of the division plate with the inner ends of the two spiral plates, bending the upper edge and the lower edge of the spiral plate of each channel of the spiral body outward and lapping the edges to the end surface of the adjacent spiral plate to be welded and sealed, and arranging a bracket under the spiral body. The spiral plate heat exchanger and the production method have the advantages that the welding amount is small, the leakage points are in a small quantity, and the production cost is low.

The invention discloses a push plate type side loading and unloading sanitation vehicle. The push plate type side loading and unloading sanitation vehicle comprises a tank with a rear-end tank opening, wherein a garbage dumping opening is formed in the top of the tank; a tank rear baffle plate is hinged to the rear-end tank opening of the tank; a garbage can elevating guiding device is fixedly arranged on the side wall of the tank; a can lifting device is arranged on the top of the tank and is connected to a can hanging device; the can hanging device is arranged in the garbage can elevating guiding device in a rolling manner; a garbage pushing device is arranged in the tank in a sliding manner and is connected to a pushing control device extending to the outer side of the tank; the pushing control device is arranged on a vehicle body of the sanitation vehicle; wheels are arranged at the bottom of the vehicle body; and the front end of the vehicle body is connected to a cab. The friction between the garbage can and the tank is avoided, the realization of protection of the garbage can and the tank is facilitated, the garbage pushing device and the pushing control device can also avoid secondary pollution and prevent a driver from getting off the vehicle to perform operation, and therefore, the push plate type side loading and unloading sanitation vehicle is labor-saving in use and convenient to operate.

A structure for extreme thermal cycling has a support element that supports a vessel primarily by bearing and frictional forces rather than by welds. The support element has a bearing portion that tapers inwardly beneath a knuckle that separates a cylindrical section of the vessel from a sloped lower section. The bearing portion of the support element follows that slope, providing an extended area of contact between the support element and the vessel. An annular section of the support element can be heated and expanded before placing it around the cylindrical section of the vessel to provide pre-stressing. If required, a strap may extend downwardly from the vessel over an upper edge of the support element.

The invention relates to a matched product of a petrochemical pipeline, in particular to a high-temperature pipeline heat insulation support. The high-temperature pipeline heat insulation support comprises a pipeline connection component, a heat insulation block, a base connection component and a base and is characterized in that a pipeline is lifted by the upper end of the pipeline connection component; the lower end of the pipeline connection component is connected with the top end of the heat insulation block; the lower end of the heat insulation block is fixed on the base by the base connection component. The high-temperature pipeline heat insulation support has the following advantages: 1, a heat insulation material is used as a component of a pipe holder supporting component, so that not only the requirement on intensity of a pipe holder, but also the requirement on a heat insulation effect of the pipe holder are met, and the effective heat insulation thickness is effectively increased; 2, in the working process, the axial thrust of the pipeline can be balanced out by a baffle and compared with a conventional anchoring nail structure, the high-temperature pipeline heat insulation support can bear a larger axial force; 3, the size of the heat insulation block assembly is not restrained by the sizes of the pipeline connection component and the base connection component, modular production can be carried out, universality is improved, and cost is reduced; 4, the use amount of steels is reduced, the welding quantity is small, and the workload of production is reduced.

The invention relates to the technical field of railway vehicles, and discloses a vehicle body floor structure and a railway vehicle with the vehicle body floor structure. The vehicle floor structurecomprises a floor frame, a floor body, and a plurality of support beams, wherein the floor body is detachably mounted on the floor frame, the floor body comprises a plurality of floor units, and adjacent floor units are detachably connected; each of the support beams is arranged on the floor frame and used for supporting the floor body, wherein one of the support beams is arranged between every two of the floor units. The vehicle body floor structure has the advantages of being modularized, detachable, light in weight, and low in welding quantity.

The invention discloses a steel bar integrated binding mold of a prefabricated box girder and a use method of the steel bar integrated binding mold. The steel bar integrated binding mold of the prefabricated box girder comprises an outer mold frame and an inner mold frame, wherein the outer mold frame comprises two side formworks and a bottom formwork, the side formworks include an upper side formwork and a lower side formwork which are integrally formed, the upper side formwork is provided with a plurality of first plate bodies at intervals in the longitudinal direction, the upper side formwork is provided with at least one second plate body, the lower side formwork is provided with a plurality of third plate bodies at intervals from bottom to top, the bottom formwork is provided with a plurality of fourth plate bodies at intervals in the longitudinal direction, and the two ends, in the transverse direction, of the bottom formwork are each provided with at least one fifth plate body; and the inner mold frame comprises a plurality of lines of top plate steel bar binding supporting sleeves, a plurality of top plate longitudinal shaping steel pipe supporting pipes and a plurality of top plate longitudinal shaping steel pipes all of which are arranged at intervals in the transverse direction. The steel bar integrated binding mold of the prefabricated box girder is small in investment in use, low in cost, high in adaptive capacity, easy to construct, rapid and high in safety.

The invention discloses a steel sheath type steel truss web node structure. Two truss web steel tubes, a horizontal steel plate and slant steel sheaths are arranged on a node; the horizontal steel plate is parallel to a top plate or a bottom plate; two elliptic holes are formed on the horizontal steel plate; two slant steel sheaths are inserted and welded in the elliptic holes; the two truss web steel tubes are inserted into the slant steel sheaths respectively in the traverse direction; the two truss web steel tubes are inserted into the slant steel sheaths respectively opposite to each other in a herringbone form; intersection parts are vertically cut respectively; cut surfaces are welded with steel plates respectively to be sealed; bolt holes and through reinforcement holes are reserved on the steel plates; and the steel plates of the two steel tubes are riveted together through common bolts to ensure that the two truss web steel tubes are integrated in the traverse direction.

The invention discloses a processing method of a box-shaped arm section. The processing method comprises the following steps: a cutting forming step, a first bending step, a second bending step and a closed connection step, wherein in the cutting forming step: a sheet material is cut to form a cutting forming plate; in the first bending step: a first web forming part (2) and a second web forming part (2') are bent relative to a base plate forming part (3) of the cutting forming plate; in the second bending step: the edges of a first top plate forming part and a second top plate forming part are mutually contacted or are opposite through the first top plate forming part (6) and the second top plate forming part (7) of the bending cutting forming plate of the first web forming part and the second web forming part; and in the closed connection step: the edges of the first top plate forming part and the second top plate forming part are mutually connected, so as to form the box-shaped arm section. In addition, the invention also provides a box-shaped arm section and a concrete pump truck arm frame. The processing method of the box-shaped arm section is simple in process, and is convenient for guaranteeing the processing quality; the processing working procedures and the processing time are obviously reduced; and the working efficiency is improved.

The invention discloses an engineering detection vehicle bogie frame. The engineering detection vehicle bogie frame comprises an H-shaped frame body composed of two side beams of a box-shaped structure and two cross beams of a hollow structure. Hollow auxiliary beams are fixed between the inner sides of the two cross beams. The middles of the side beams are sunken to form sunken parts used for mounting secondary spring seats. The outer sides of the middles of lower cover plates of the side beams protrude outward to form vertical oil pressure shock absorber seats. According to the trailer engineering detection vehicle bogie frame suitable for tread brake, the side beams are of the box-shaped structure, the cross beams and the auxiliary beams all adopt hollow steel pipes, thus the whole weight of the frame is effectively decreased while strength is guaranteed, and the purpose that a vehicle body is lightweight is achieved.

The invention discloses a supporting leg of crane, which comprises at least one movable supporting leg; the movable supporting leg is formed in a manner that a cover plate assembly, a left web plate assembly, a right web plate assembly and a bottom plate are assembled and welded; each plate assembly comprises a base plate and a reinforced plate respectively; the reinforced plate is greater in thickness than the corresponding base plate and is butted, assembled and welded with the corresponding base plate to form the plate assembly; and the base plate in the plate assembly is located outside the reinforced plate. The movable supporting leg is formed in a manner that a cover plate assembly, a left web plate assembly, a right web plate assembly and a bottom plate are assembled and welded, and the base plate and the reinforced plate are assembled and welded, so that welding quantity is reduced. Concentrated and larger stress is formed at overlap joint position when the movable supporting leg is extended out, the reinforced plate is located inside and the overlap joint position is located on the reinforced plate so that the reinforced plate can adapt stress distribution of the plate assembly. The supporting leg of such structure adapts stress distribution of the plate assembly and reduces welding quantity. The invention also discloses a crane comprising the supporting leg.