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55results about How to "Good seams" patented technology

Clamp for heating and ventilation pipe welding

The invention discloses a clamp for heating and ventilation pipe welding, and relates to the technical field of heating and ventilation production. The clamp solves the problems that operation is troublesome due to the fact that an existing pipeline welding clamp can only be used in welding of straight pipes, pipelines at other angles are difficult to clamp and weld, and meanwhile manual operationis needed during butt joint, and the welding quality is poor due to the fact that the butt joint requirement is difficult to meet due to low pipeline butt joint precision. The clamp comprises a mounting base, wherein the right side of the upper portion of the mounting base is rotationally connected with a set of swinging seats, and the upper portion of the left side of the mounting base is slidably connected with a set of seam closing sliding piece; and the rear portions of the swinging seats are hinged with a set of swinging connecting rods. According to the clamp for heating and ventilationpipe welding, automatic butt joint action on the pipelines can be achieved, meanwhile, splicing and welding between the pipelines at different mounting angles can be achieved, and the pipelines can be rotated so that the splicing angle of the pipelines can be adjusted, and the splicing precision is higher; and meanwhile, a straight pipe can be welded and rotated at the same time, so that the welding quality is guaranteed.
Owner:沙雨亭

Square and rectangular tube pre-welding machine of JCO unit

ActiveCN105750776AMeet the pre-welding process requirementsReduce the bending stress pointWelding/cutting auxillary devicesOther manufacturing equipments/toolsWelding processEngineering
The invention provides a square and rectangular tube pre-welding machine of a JCO unit.The pre-welding machine comprises a rack, a supporting and conveying mechanism, a joint closing mechanism, a joint pressing mechanism and a pre-welding mechanism; the rack is sequentially provided with a joint closing frame, a joint pressing frame and a pre-welding frame in a first direction; the supporting and conveying mechanism is arranged in the rack in a penetrating mode so as to support and convey tube blanks; the joint closing mechanism is arranged in the joint closing frame and located above the supporting and conveying mechanism so as to conduct joint closing on the tube blanks; the joint pressing mechanism is arranged in the joint pressing frame and located above the supporting and conveying mechanism so as to conduct joint pressing on the tube blanks obtained after joint closing; the pre-welding mechanism is arranged in the pre-welding frame and located above the supporting and conveying mechanism so as to pre-weld the tube blanks obtained after joint pressing into square and rectangular tubes.According to the square and rectangular tube pre-welding machine of the JCO unit, segmented functional areas are arranged, and therefore the pre-welding process requirements of the square and rectangular tubes can be met.
Owner:TAIYUAN HEAVY MACHINERY GRP ENG TECH R & D CO LTD

Construction method of cast-in-place decorative finish bare concrete wall

The invention provides a construction method of a cast-in-place decorative finish bare concrete wall. The construction method comprises the steps of delimiting a construction area on the ground, preparing a wall skeleton, preparing a plurality of wall formworks, hoisting the wall formworks, preparing bare concrete, removing all impurities in the wall skeleton and the wall formworks, pouring cementmortar, pouring the bare concrete into the wall skeleton several times, vibrating the bare concrete, curing the cast-in-place decorative finish bare concrete wall, and dismantling protective materials. According to the technique scheme of the construction method, the wall formworks are made from N-shaped steel beams and punched and cold bend C-shaped structural steel, the flatness of a panel is high, at same time, a plurality of wall penetrating screws are adopted, the structural strength of an existing supporting system of the wall formworks is greatly enhanced, the flatness of both sides ofa pouring wall body is effectively ensured, and compared with the prior art, the construction method has the advantages of convenient installation of the wall formworks, good quality of the pouring wall body, low cost, saving of raw materials, shortening of construction time, reduction of environmental pollution and the like.
Owner:NO 1 CONSTR ENG CO LTD OF GUIZHOU CONSTR & ENG GRP

Partition wall with rib plates

The invention discloses a partition wall with rib plates. The partition wall comprises two wall board modules arranged in parallel, a cavity is formed between the two wall board modules, and any wall board module comprises a plurality of unit wall boards which are arranged in the length direction of the partition wall; the partition wall further comprises first connecting members and the rib plates, the first connecting members are arranged in the height direction of the partition wall, and the first connecting members are clamped between two adjacent unit wall boards in the length direction of the partition wall and are connected to the end parts of the unit wall boards in an inserting manner; and the rib plate is vertically arranged between the two wall board modules, the rib plate is perpendicular to the wall board modules, and the two ends, in the thickness direction of the partition wall, of the rib plate are correspondingly connected to the first connecting members in an inserted mode so as to support the cavity. The invention relates to the field of buildings, and provides the partition wall with the rib plates, the partition wall is provided with the rib plates and the first connecting members for connecting the rib plates, can improve the strength of the joint of two unit wall boards, can also avoid seams between the unit wall boards, is more attractive, is integrally simpler, and is beneficial to field installation.
Owner:CHINA NAT BUILDING MATERIALS TECHCAL INNOVATION & RES INST LIMITED

Splicing growth process for large-size monocrystalline diamond

The invention discloses a splicing growth process for large-size single crystal diamond, and is suitable for epitaxial growth of single crystal diamonds by a microwave plasma chemical vapor deposition(MPCVD) method. The process comprises the following steps of: 1, processing the edges of seed crystal sheets of the single crystal diamonds to be in a tenon joint shape; 2, cleaning an edge interface. 3, carrying out double-sided polishing on the plurality of spliced seed crystals to reduce the height difference. 4, splicing the diamond seed crystals of which the edges are tenon-joint-shaped. 5,growing the spliced and polished crystal seeds of the polished diamond by adopting an MPCVD method. According to the process, through a micron-sized joggle joint gap technology, stress relaxation in the growth process of the monocrystal diamond is achieved, and the growth effect is improved. Splicing growth of the large-size single crystal diamond is achieved through joggling, edge treatment, height difference treatment and other processes, the large-size single crystal diamond obtained through the method has the advantages of being high in flatness, small in splicing part stress and the like,and the high-quality and large-size single crystal diamond can be obtained.
Owner:物生生物科技(北京)有限公司

Construction method for longitudinally and flexibly splicing newly-built bridge and current bridge

The invention belongs to the technical field of road bridge construction and relates to a construction method for longitudinally and flexibly splicing a newly-built bridge and a current bridge. The construction method comprises the steps of re-measurement and checking, horizontal and vertical current bridge cutting, asphalt laying, splicing construction, slot bottom processing, waterproof treatment, GD elastic concrete paving and casting, rolling compaction and surface treatment. The construction method has the advantages that normal use of a prestressing system and the integrity of splicing joint structure size of the current bridge are ensured; sudden change of elevation difference is eliminated, the running comfort is improved, and the noise volume of each vehicle passing through splicing joints is reduced; rainwater infiltration is effectively prevented, and the structure durability is improved; the surface roughness of GD elastic concrete is improved; small construction operation surface and uninterrupted traffic can be achieved, the method is easy and quick, a splicing effect is good, the operation and maintenance costs are low, a construction period is short, and opening to traffic can be achieved after 2 hours after construction is completed; the operation is simple, and repair is convenient.
Owner:SINOHYDRO BUREAU 11 CO LTD

Continuous construction method for fibers at joint of concrete structure

The invention discloses a continuous construction method for fibers at a joint of a concrete structure. The continuous construction method comprises the steps that thin holes are formed at designed intervals in a formwork at a joint of first-poured concrete, the fibers with certain lengths are inserted into unset concrete through the thin holes after the first-poured concrete is poured and beforethe concrete near the joint is initially set, and after the concrete is hardened and the formwork at the joint is removed, the remaining fibers, with certain lengths, which are not inserted into the concrete are exposed outside the surface of the concrete joint; and when concrete on the other side of the joint is poured again, the fibers are connected between the concrete which is poured by two times to enable the fibers to be continuous at the joint of the concrete which is poured separately. The continuous construction method for the fibers at the joint of the concrete structure fundamentally solves the problem of discontinuity of fibers at the joint of the concrete structure, and it is not necessary to improve joint performance by the complex joint forms such as changing the joint shape, densifying reinforcements or adopting a special-shaped steel plate. The continuous construction method for fibers at the joint of the concrete structure has low engineering cost, convenient construction, material saving, excellent structure performance, and good prospect of popularization.
Owner:FUZHOU UNIVERSITY

Intelligent cloth sewing processing equipment for electric blanket tippet and working method of intelligent cloth sewing processing equipment

The invention discloses intelligent cloth sewing processing equipment for an electric blanket tippet. A plurality of sets of movable trundles are installed at the bottom of a conveying rack, a first motor is fixedly installed on the conveying rack, a first belt wheel is fixedly connected to an output shaft of the first motor, an electric heating pipe is arranged in a heating roller, first connecting shafts are fixedly arranged on two sides of the heating roller correspondingly, two sets of first plummer blocks are fixedly installed on the conveying rack, and the two sets of first connecting shafts are connected to inner rings of the two sets of first plummer blocks correspondingly. According to the equipment and the working method thereof, the cloth is automatically conveyed, the manual operation is effectively saved, the sewing efficiency is improved, the cloth is heated, ironed and leveled before cloth sewing processing, the sewing quality of the cloth is effectively improved, a sewing cover is driven to reciprocate in a horizontal direction through transmission and separation of a lead screw, and sewing processing can be conducted on different positions of the cloth conveniently.
Owner:浙江肯特科技股份有限公司

Adhesive-free carpet tile installation construction method and device used and carpet tile structure

PendingCN108797949AEasy alignmentEasy to seamFlooringAdhesiveNon destructive
The invention discloses an adhesive-free carpet tile installation construction method and device used and a carpet tile structure. The problems of forming of blind holes in carpet tile installation ground, a device used for forming and the structure of adhesive-free carpet tiles are solved. The adhesive-free carpet tile installation construction method comprises the steps that a leveling installation layer is arranged on the ground, the blind holes regularly formed are rolled out after the initial setting of the leveling installation layer, and the carpet tiles are sequentially mounted and fixed to the blind holes. The device used includes a machine frame and a forming press roller, blind hole forming protrusions are regularly arranged on the outer circumference of the forming press roller, and the forming roller is slidably supported on the machine frame. The carpet tile structure comprises a carpet and a mounting fixing layer, a set of elastic protrusions is regularly arranged on thebottom surface of the mounting fixing layer, the carpet is the same size as the mounting fixing layer, and a bottom cloth of the carpet is in press fit with the mounting fixing layer to form an integrated body. The adhesive-free carpet tile installation construction method and the device used and the carpet tile structure have the beneficial effects that an adhesive is not required for fixing, material cost is reduced, the release of harmful substances of the adhesive is overcome, pollution is not produced during construction, simplicity, speediness and convenience are achieved, work efficiency is high, construction period and labor cost are saved, non-destructive disassembly and assembly functions are achieved, the carpet can be reused.
Owner:SHENZHEN RUIHE CONSTR DECORATION
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