30results about How to "Neat seams" patented technology

The present invention is developed on the basis of available continuous HF fusion welding machine and fusion welding method and has improved long non-ferrous metal electrode plate. Structurally, the present invention has flexible material inside the longitudinally open-mouthed section, conducting copper sheet on the flexible material and insulating layer on the conducting copper sheet; as well as wheel protecting belt below the movable HF electrode plate heat jointing and settling assembly. The present invention has the advantages of the complete fusion and adhering of the jointed material, no adhesion between the HF electrode plate heat jointing and settling assembly and the jointed material and high welding quality.

The invention provides a building quake-proof outer wall hanging plate, which comprises a plate body, wherein at least two groups of first embedded connecting elements are arranged on the upper part of the inner side of the plate body, and are embedded inside the plate body; an installing seat is arranged in the position, corresponding to each first embedded connecting element, of the inner side of the plate body; the installing seat comprises a first installing plate and a second installing plate which are vertical to each other; a strip-shaped hole is formed in the first installing plate; a first screw bolt is arranged in the strip-shaped hole, and is connected with a screw hole formed in the first embedded connecting element through screw threads. The building quake-proof outer wall hanging plate has the advantages that the installing position between a framework beam and the outer wall can be adjusted; the requirement on the precision of the embedded elements during the construction is reduced.

The invention provides a steel box tied-arch bridge steel structure construction system and method, a transportation isolation protection support is additionally arranged in the transportation process of steel beam components, and the quality and transportation safety of the steel beam components are guaranteed; according to a temporary support system, steel pipe columns are directly connected with the strip-shaped foundation embedded parts through connecting sleeves, meanwhile, the steel pipe columns are anchored with one another through unit type sliding connecting parts, an integral type steel frame is arranged at the top, and the whole temporary support system is high in building speed and good in stability; the fixed steel beam components are finely adjusted through a steel beam component splicing position adjusting device composed of an L-shaped steel plates and a jack, so that it is guaranteed that joints are tidy, the elevation is proper, the waste of raw materials is reduced, and the mounting precision and quality of the steel beam components are greatly improved. A temporary fixing system is formed between the installed steel beam components and the installed steel structure through horse plates and clamps on the two sides, and the time needed by hoisting and splicing work is greatly shortened.

The invention discloses a cloth folding and setting mechanism of a sleeve placket machine. An overturning motor is mounted on an overturning motor seat; the output end of the overturning motor penetrates through the overturning motor seat to be connected with a first clamping air cylinder; an upper clamping piece and a first lower clamping piece are mounted on the first clamping air cylinder; a positioning piece and a second lower clamping piece are mounted on a second clamping air cylinder; the first clamping air cylinder controls one end of the upper clamping piece to tilt up or press the first lower clamping piece; a lifting motor is mounted on a material folding adjusting seat; a lifting lead screw seat is mounted on the material folding adjusting seat; a lead screw is arranged in the lifting lead screw seat; the lead screw is connected with the output end of the lifting motor; a lifting connector is mounted on the lead screw; the lifting connector is fixedly connected with an overturning motor seat; the overturning motor penetrates through the material folding adjusting seat to be mounted on the overturning motor seat; and a positioning piece corresponds to a positioning template. The cloth folding and setting mechanism has the beneficial effects that the working efficiency of the sleeve placket machine is improved, and manpower and material resources can be saved.

The invention relates to a concrete pump truck body frame and a concrete pump truck. The concrete pump truck body frame comprises a first supporting part, a second supporting part and a rotary supporting base. Before the body frame is formed, the rotary supporting base, the first supporting part and the second supporting part are independent components; the body frame is configured to be formed bywelding the first supporting part, the second supporting part and the rotary supporting base; and the first supporting part and the second supporting part are welded to form an X shape. The concretepump truck body frame is divided into the first supporting part, the second supporting part and the rotary supporting base, all sub-components are integrally tailor-welded after being tailor-welded, and each sub-component is relatively simple in structure, regular in weld joint and easy to independently perform automatic welding; the number of connecting weld joints between the sub-components is small, the connecting weld joints are all external weld joints, continuous and tidy, and parallel manufacturing can be achieved; and point splicing and pairing are conducted for overall automatic welding after construction is completed, so that automatic welding is easy, the welding production efficiency and the welding quality are improved, and the labor intensity is reduced.

The invention discloses an installment method of hyperboloid metal curtain wall, which comprises that first designs the spatial solid shape of the metal curtain wall, divides the shape into curvatureblocks along longitude and woof, designs relative plane blocks based on the curvature blocks, feeds materials on the plane blocks, punches the plane blocks into relative curvature blocks, at last installs the curvatures into designed shape. The invention designs the size of plane block based on the curvature blocks via the equilateral distance method, to assure the engagement between the curvatures to obtain the high-quality joint between curvatures.

The invention discloses a skid-mounted refueling device which comprises a rectangular frame and modular double-layer plate bodies. The rectangular frame is formed by assembling and welding square pipes and channel steel; the modular double-layer plate bodies are assembled and welded onto the rectangular frame so as to form an inner tank and an outer tank of the skid-mounted refueling device; eachdouble-layer plate body comprises an inner-layer plate body and an outer-layer plate body which are fixed through a welding manner; and a gap is left between each inner-layer plate body and the corresponding outer-layer plate body. With the modular structure design, an existing inner tank and an existing outer tank not only can be combined together but also can be divided into independent components and parts similar to door panels, and the dimensions can be unified to the greatest extent, so that a production and manufacturing process is simplified, a standard parts production effect can be achieved, the assembly line work is favorably realized, and the production efficiency is improved.

The invention provides a non-taper laser machining method and machining device. According to the non-taper laser machining method and machining device, the problems of uncontrollable cutting slit taper, large slit roughness and low quality in an existing laser cutting mode, and laser non-taper cutting is realized. The non-taper laser machining method comprises the following steps that (1) two-dimensional shaping is carried out on a laser beam; a Gauss light spot of the laser beam is shaped into a rectangular uniform light spot of a two-dimensional plane; (2) three-dimensional shaping is carried out on the laser beam; the laser beam obtained in the step (1) is shaped into a long focal depth rectangular flat top laser beam; and (3) laser machining is carried out; the long focal depth rectangular flat top laser beam obtained in the step (2) is used for machining.

The invention provides a hot-pressing device for panel splicing used in furniture production, which relates to the technical field of furniture production equipment, to solve the problem of splicing problems due to the small heat flux at the splicing position during the splicing process of panels, especially during hot-press splicing. The heating range is wide, and it is difficult to accurately and quickly realize hot-press splicing. In addition, during the splicing process, fixtures are required to clamp the two panels to be spliced. The more difficult problem includes the hot pressing table; the left end edge and the right end edge of the top plane of the hot pressing table are respectively vertically slid upwards and installed with end sealing mechanisms. In the present invention, since the middle part of the bottom plane of the hot pressing table is provided with a rectangular ventilation slot, and due to the existence of the deflector block, the air below can be prevented from entering upwards, and only the hot air above can flow downward.

The invention provides a combined assembling type construction method of a steel tree pond, and relates to the technical field of planting of trees. When the trees are planted, an irrigation pipeline and a drainage pipeline are both buried in the ground. According to the drying degree of weather, the irrigation pipeline is used, and a vertical water supply pipe arranged on the periphery of each tree is used for regularly watering the tree in an invisible manner. When accumulated water on an earth surface is too much due to continuous rainfall, a vertical pavement drain pipe can be used for collecting the accumulated water on the earth surface and drain the collected accumulated water through a sewage drainage pipe; and redundant moisture in soil at the roots of the trees can be filtered through a penetrating pipe wrapped by a filter cloth and then drained through the sewage drainage pipe. Therefore, the planting method disclosed by the invention achieves the effect of self adjusting of the moisture in the soil in root systems of the trees.

The invention discloses a thin-steel-plate continuous tailor-welding device and a tailor-welding method. The tailor-welding device comprises a conveying roller way, centering devices and vacuum locating devices, wherein the conveying roller way is used for conveying thin steel plates to be welded, the centering devices are arranged at the two sides of the conveying roller way, and the vacuum locating devices are arranged below the thin steel plates to be welded. The tailor-welding method comprises the step of realizing the welding of the thin steel plates by using the thin-steel-plate continuous tailor-welding device. According to the thin-steel-plate continuous tailor-welding device and the tailor-welding method, the welding process of the thin steel plates can be stable and cannot be subjected to deforming and warping, weld seams are orderly after welding is completed, the welding speed is increased, the quality of welding is good, and the smoothness of the welded steel plates is good.

The invention belongs to the technical field of welding materials, and particularly involves a low-hydrogen iron powder electrode and preparing method. The coating of low-hydrogen iron powder electrode is made up of following parts by weight: 47 to 49 parts of marble, 13 to 15 parts of fluorite, 2 to 4 parts of ferrosilicon, 1.5 to 2.5 parts of titanium dioxide, 1.5 to 2.5 parts of wood powder, 14 to 16 parts of rutile, 4 to 6 parts of feldspar powder, 6 to 8 parts of silica flour, 4 to 6 parts of mica powder, 12 to 14 parts of titanium valve, and 19 to 21 parts of iron powder. The low-hydrogen iron powder electrode has the advantage of overall good appearance of weld seam, parallel sideline and knitting well with mother metal. Weld seam is neat for ripple, and the height of weld seam is close to. The surface of weld seam does not have the disadvantage of pore-free, crackle, slag inclusion, undercut, and overlap. The welding slag after welding rod is easy to fall off.

The invention discloses a crane main beam. The crane main beam comprises a first web, a second web, reinforced frames, a top plate and a bottom plate. The top plate is connected with the top of the first web, and the bottom plate is connected with the bottom of the second web. The reinforced frames are arranged in the main beam at intervals and are fixedly connected with the first web, the second web, the top plate and the bottom plate respectively. The first web and the second web are each provided with a camber. The first web and the second web are both formed in a sequence welding manner. Staggering distances are set between segmented weld joints of the first web and between segmented weld joints of the second web. Due to the fact that the first web and the second web of the main beam are formed in the sequence welding manner and a certain staggering distance is kept between every two adjacent segmented weld joints of the two webs, stress of the main beam is dispersed because of arrangement of the weld joints; due to a new machining technology, the rigidity of the main beam is enhanced, and flexibility caused when a long-span main beam generates bending moment because of dead weight is effectively prevented.

An adsorption-type ultrasonic welding tool head applied to the connection of polymer micro-devices belongs to the technical field of assembly of polymer micro-devices. The fixed structure of the weldment and the vacuum adsorption clamping structure are provided with a ventilation interface at the node position of the tool head. The effects and benefits of the present invention are that after structural dynamics analysis, the structural design realizes the amplitude amplification function of the vibration of the ultrasonic transducer, and the radiation surface vibrates evenly, which ensures uniform welding of devices and neat weld seams, and can significantly improve the ultrasonic welding efficiency. Processing quality. The ventilation interface is located at the node position of the tool head, which can avoid the influence of ultrasonic high-frequency vibration on it. The ultrasonic tool head involved in the present invention has a clamping and fixing structure for the device to be connected, and is an automatic assembly of polymer micro-functional devices. Foundation.

The invention discloses an H-shaped steel welding device and a welding process thereof. The adopted technical scheme is as follows: the H-shaped steel welding device comprises an input part, a welding part and an output part and is characterized in that the welding part comprises a flange slab clamping and positioning device, a web plate conveying device and at least one mechanical arm, wherein the mechanical arm is mounted on a welding station and can move under the drive of the welding station, the mechanical arm is further connected with a mechanical head, and the mechanical head can be replaced by any of a laser scanning head, a welding head or a cutting head. The H-shaped steel welding device has the beneficial effects that the H-shaped steel welding device is high in degree of welding automation, uniform and neat in weld joints, and high in strength, the whole process is completed automatically under the control of a program, laser scanning, welding and cutting processing can be sequentially completed by adopting the mechanical arm, the working efficiency is greatly improved and the cost can be saved by above 20%.

The invention discloses a novel efficient welded plate heat exchanger. The novel efficient welded plate heat exchanger comprises first Z-shaped heat exchange plates, second Z-shaped heat exchange plates and a shell. The long edge of each first Z-shaped heat exchange plate is folded outwards. The short edge of each second Z-shaped heat exchange plate is folded outwards. The first Z-shaped heat exchange plates and the second Z-shaped heat exchange plates are arranged in the shell from one side of the shell to the other side of the shell in sequence alternately, so that first fluid passageways and second fluid passageways which are mutually spaced are formed. The folded edges of the first Z-shaped heat exchange plates are fixedly connected to the upper end face and the lower end face of the shell in a sealed mode. The folded edges of the second heat exchange plates are fixedly connected to the side faces of the shell in a sealed mode. A first fluid inlet and a first fluid outlet are formed in the upper end face and the lower end face of the shell respectively and communicated with the first fluid passageways. A second fluid inlet is formed in one side face of the shell, a second fluid outlet is formed in the side face, opposite to the second fluid inlet, of the shell, and the second fluid inlet and the second fluid outlet are communicated with the second fluid passageways. The novel efficient welded plate heat exchanger is tightly sealed and is high in pressure bearing capacity and higher in heat transfer efficiency; the application range is wide, modularization can be achieved, and the engineering adaptability of the novel efficient welded plate heat exchanger is improved.

The invention relates to a steel tower double-ring straight bearing type reverse balance flange connecting joint. The steel tower double-ring straight bearing type reverse balance flange connecting joint comprises an upper flange tower and a lower flange tower, wherein an upper stiffening plate is welded to the inner wall of the upper flange tower; a lower stiffening plate is welded to the inner wall of the lower flange tower; an upper balance ring is welded to the inner side of the upper stiffening plate; a lower balance ring is welded to the inner side of the lower stiffening plate; the upper surface of the upper stiffening plate is connected with an upper flange plate through structural adhesive; the lower surface of the lower stiffening plate is connected with a lower flange plate through structural adhesive; the upper flange plate and the lower flange plate are provided with bolt holes; and high-strength bolts penetrate through the upper flange plate and the lower flange plate through the bolt holes to connect the upper flange tower with the lower flange tower. Compared with the prior art, the steel tower double-ring straight bearing type reverse balance flange connecting joint has the advantages of being low in machining difficulty, convenient to install, excellent in fatigue resistance, high in circumferential rigidity and the like.