84results about How to "Tight and reliable" patented technology

The invention discloses an umbrella-holding type pipeline tensioning mechanism which comprises a middle shaft (1) and two movable blocks (2) sleeved on the middle shaft, wherein a locking device (3) fixed with the middle shaft is arranged on the movable blocks (2), and at least three groups of tensioning connection rods (4) for supporting the inner wall of a pipeline are arranged between the two movable blocks. By means of the technical scheme, the tensioning connection rods for supporting the inner wall of the pipeline are evenly distributed between the two movable blocks with the axis of the middle shaft serving as the standard, sprigging and falling of the tensioning connection rods are driven along with moving of the movable blocks, and adjusting is performed according to the inner diameter of the pipeline. The umbrella-holding type pipeline tensioning mechanism is convenient to adjust, can adapt to operation of pipelines of different diameters, saves the cost of tensioning tooling, fully uses the tensioning tooling and is firm in tensioning and simple in structure.

The invention discloses a hydraulic packer and a mounting method of the hydraulic packer. The hydraulic packer and the mounting method of the hydraulic packer are used for downhole oil production by layer and the like. The hydraulic packer comprises a releasing mechanism, a rubber barrel sealing mechanism, an anchoring mechanism, a setting mechanism and the like. The anchoring mechanism comprises an upper cone, a lower cone, a slip, a reset spring and a slip cage, the upper end of a T-shaped sleeve of the lower cone is connected with a conical head, the T-shaped sleeve is sleeved with a compression sleeve, matched steps are arranged between the compression sleeve and the T-shaped sleeve, the compression sleeve can axially slide along the outer side of the T-shaped sleeve, and an expansion spring is arranged between the compression sleeve and the conical head and on the outer periphery of the T-shaped sleeve. The releasing mechanism is arranged on the upper portion of the hydraulic packer and comprises an upper connector, a releasing sleeve, a fishing barrel, a releasing piston, a ball seat, a ball and the like. After setting of the packer is completed, releasing can be achieved by throwing the ball and can be achieved by rotating a pipe column in the forward direction. Due to the fact that the expansion spring is arranged on the lower cone, the conical head can reliably expand the slip due to the thrust of the expansion spring. Meanwhile, due to the design of the releasing mechanism, the problem that the lower tensile force borne by the packer is insufficient is solved.

The invention discloses a degradable iron, zinc and magnesium-based gradient composite material based on biological bone healing. A zinc layer and an iron layer are sequentially arranged on the surface of a magnesium matrix, and the thickness or the diameter of the magnesium matrix is 30-90% of bone dimension in the repaired part. The thicknesses of the zinc and iron layers are respectively determined according to the corrosion rates of zinc and iron in an in vitro simulated body fluid. According to the composite material, rigid fixation in early stage is realized to promote bone healing, the composite material is gradually degraded, use of the material with lower rigidity is transited to dynamic fixation, and finally, the material is fully absorbed in vivo to prevent from being taken out in the second operation. Rapid degradation in the non-mechanical bearing later stage is realized, and growth by differentiation of bone cells and ingrowth of blood vessels on the surface of material are induced by hoping to combine the advantages that iron in higher rigidity in the early stage realizes rigid fixation and zinc in lower rigidity in the middle stage realizes dynamic fixation by means of quicker corrosion rate of magnesium. Finally, the composite material is fully absorbed, so as to realize the bone repairing purpose. The composite material disclosed by the invention is applicable to gradient structure designs of internal fixing materials after fracture with change demands on mechanical property with the passage of time.

The invention discloses a heavy type plate feeder, and belongs to the technical field of mining machines. The heavy type plate feeder comprises a base, cross beams, caterpillar track guide wheel seats, caterpillar track guide wheels, a raw mineral material conveying mechanism and a caterpillar track wheel shaft. The raw mineral material conveying mechanism comprises a pair of caterpillar track plate traction chains and a set of caterpillar track plates, a pair of caterpillar track wheels is sleeved with the caterpillar track plate traction chains, and a caterpillar track tensioning mechanism is arranged at the right end of the base. The heavy type plate feeder is characterized in that every two cross beams arranged on the upper portion of the base are adopted as a group, cross beam limiting frames are fixed to the base, a shock pad barrier strip and shock pads are further arranged on the base, the two ends of each cross beam are arranged on the shock pads, and shock pad blocking and protecting mechanisms are fixed to the positions corresponding to the shock pads. The caterpillar track tensioning mechanism comprises a support cross beam, a first support cross beam longitudinal arm, a second support cross beam longitudinal arm, an adjusting screw rod, a spring and an adjusting nut. The heavy type plate feeder is beneficial for protecting the raw mineral material conveying mechanism, the cross beams and the base against impact failures, and a caterpillar track wheel bearing pedestal can be reliably tensioned and located at the adjusted position.

The invention relates to the technical field of water treatment and particularly discloses a catalytic ozonation catalyst as well as a preparation method and application thereof. The catalytic ozonation catalyst comprises a carrier, an active component and an auxiliary agent. The carrier is gamma-Al2O3, the active component is an oxide of Co and one or more of oxides of Mn, Ce, Cu, Ni and Fe, and the auxiliary agent is an oxide of Ca. The invention also provides a preparation method of the catalyst. Compared with a catalyst prepared by directly impregnating an active component in a traditional carrier, the catalyst provided by the invention has the advantages of tight combination of the carrier and the active component, difficult loss of the active component, high catalytic activity, stable catalytic performance, long service life and the like. The method is suitable for treating industrial wastewater with high CODcr concentration and complex organic matter composition.

The invention discloses an electronic cigarette, a sheet heating body of the electronic cigarette and a preparation method of the sheet heating body. The preparation method comprises the steps that ceramic slurry is prepared and subjected to casting to form a plurality of membranes; a part of the membranes are punched; electrodes are printed on first sides of the punched membranes; heating circuits and temperature measuring circuits are printed on second sides of the membranes where the electrodes are printed, and the heating circuits and the temperature measuring circuits are connected with the electrodes through holes formed in the membranes; the second sides of the membranes where the heating circuits and the temperature measuring circuits are printed are stacked on the non-punched membranes for lamination, and a sheet green body is formed; the sheet green body is sintered to obtain the sheet heating body of the electronic cigarette. According to the electronic cigarette, the sheetheating body of the electronic cigarette and the preparation method of the sheet heating body, the heating circuits and the temperature measuring circuits are sintered together with ceramic, so that the temperature of the heating body is uniformly distributed, and a temperature measuring area is reasonable and accurate.

The invention provides a gear shifting mechanism in the vehicle transmission technical field, consisting of an input shaft welding-on part, an advancing gear piston, an advancing gear cylinder, a backing gear piston, a backing gear cylinder, a recovery spring, a composite spring, and an advancing gear clutch steel sheet, a friction sheet, a backing gear clutch steel sheet, a friction sheet, a planetary mechanism component and a sun wheel welding-on part which are sequentially overlapped. The steel sheet of the advancing gear clutch and the planetary frame are respectively connected with the input shaft by a spline; the friction sheet is connected with the sun wheel welding-on part by the spline; the steel sheet of the backing gear clutch is connected with a stepless transmission shell by the spline; and the friction sheet is connected with a sun wheel gear ring by the spline. The gear shifting mechanism has the advantages of compact structure, low cost, high transmission efficiency, reliability and stability.

The invention relates to a kind of polarity-changing plasma conical circular seam welding equipment and its welding method. The welding equipment includes a cone section welding tool, a rotary positioner, a positioning plate and a welding operation frame system. The cone section welding tool includes an upper cover plate , upper cone tire, first upper pressure ring, first lower pressure ring, second upper pressure ring, second lower pressure ring, column, pull/strut assembly, coaxial positioning block, inner support assembly and chassis base, The equipment uses a set of cone tire fixtures to complete the plasma assembly, machining and welding of circular seams with two diameters and two cone angles. The carcass can be accurately positioned in the circumferential direction of the welding workpiece through the circumferential positioning device; Through the positioning surface designed on the cone tire and the axial fine-tuning screw, the axial positioning of the welding workpiece is completed, and the vertical assembly and horizontal welding method is adopted to solve the pre-weld assembly, machining, and welding problems of the large-diameter cone section cylinder. , and can obtain higher assembly efficiency and assembly and machining accuracy, thereby obtaining higher post-weld quality.

The invention provides an engagement fixture for square steel blade milling, and can solve the problems of long blade manufacturing period and high machining difficulty easily caused by positioning and clamping blades by a traditional engagement fixture. The engagement fixture for square steel blade milling comprises a turntable, and is characterized by further comprising an engagement clamping mechanism and a floating tip mechanism; the engagement clamping mechanism includes two engagement blocks and a lead screw translation structure; the lead screw translation mechanism is mounted on the turntable; the floating tip mechanism is arranged in the center position of the lead screw translation mechanism; and the two engagement blocks are respectively mounted on the lead screw translation mechanism, are positioned on two sides of the floating tip mechanism, and can oppositely or reversely move along the lead screw translation mechanism.

The invention discloses a machining and positioning combination fixture for a thin-walled part with a threaded hole. The machining and positioning combination fixture comprises a fixture body and a swelling body. The fixture body is composed of a limiting end head and a clamping rod of a hollow structure. An external thread matched with the threaded hole of the thin-walled part is arranged on theouter circle surface of the clamping rod, and an internal thread is arranged on an inner hole of the clamping rod. The clamping rod is further provided with a cut groove. The swelling body is composedof a pulling and twisting end head and a swelling core. An external thread matched with the internal thread of the clamping rod is arranged on the outer surface of the swelling core. The swelling body is connected into the fixture body in a sleeved mode through the threads. During installation, the thin-walled part is penetrated into the clamping rod of the fixture body, then the swelling core ofthe swelling body is twisted into the inner threaded hole of the clamping rod, the clamping rod can be swelled along the cut groove in the twisting-in process, and thus swelling fixation is realized.The structure is simple, manufacturing cost is low, installation is convenient, fast, firm and reliable, and meanwhile the threads cannot be damaged by jamming; and moreover, installation coaxialityis high, and the machining precision and coaxiality of the part are effectively improved.

A pipe fitting for connecting at least two pipes, the pipe fitting (1) comprising at least two layers. An innermost layer (2) and an outer layer (3) are of different materials. The innermost layer (2), which gets into contact the liquid to be conveyed, is made of plastic tolerating high temperatures. The outer layer (3) is formed of such materials that the outer surface is arranged to function as the provider of oxygen diffusion protection and/or the UV protector.

The invention belongs to the field of food processing, and in particular to a nutritional freeze-dried deep-sea fish porridge and a preparation method thereof. The invention the combines the Spanish mackerel with porridge, greatly improves the nutrition of instant food, and enriches the demand of people for nutritious instant food. The invention adopts the vacuum freeze-drying technology; the water in the raw materials of deep-sea fish porridge is directly sublimated to gas without liquidation, and the nutritional values of the raw materials are retained to the maximum level; the deep-sea fish porridge block is brewed by hot water, and rapidly scattered; the porridge has clear particles, and no adhesion or softness, so as to guarantee delicious taste and tender taste of the deep-sea fish porridge.

The invention discloses a manufacturing method for leading-out terminals of a ceramic integrated circuit encapsulation casing and a special lead framework. The special lead framework comprises an outer frame 1 and leads 2, and forms a grid bar structure with a frame, wherein the leads 2 are grid bars; the outer ends of the leads 2 are connected with the outer frame, and the inner ends of the leads 2 are in one-to-one correspondence to bonding pads on a ceramic casing 4; after the inner ends of the leads 2 are connected with the bonding pads, the redundant part of the lead framework is cut and separated; and the inner ends of the leads 2 remain on the bonding pads to form bulges so as to form leading-out terminals. Owing to the structure, convenient and accurate positioning is ensured when the leads 2 are welded with the bonding pads, so that a welding die is simplified; and besides, the outer frame can be utilized to achieve direct rack plating, so that the manufacturing technique complexity of the fine-pitch casing is greatly reduced, the production efficiency is improved and the product yield and quality are improved.

The invention discloses a revolution and auto-rotation chain tensioning type full-automatic bottle blowing machine. The full-automatic bottle blowing machine comprises a rack and a storage hopper, wherein the rack is provided with a pull-blowing mechanism and a heating device; the heating device is provided with an operation mechanism and a heating lamp box, the operation mechanism comprises revolution driving and driven chain wheel shafts and an auto-rotation driving chain wheel shaft which are arranged on rack, and the revolution driving chain wheel shaft is provided with a revolution driving chain wheel; revolution and auto-rotation driven chain wheels are arranged on the revolution driven chain wheel shaft, an auto-rotation driving chain wheel is arranged on the auto-rotation driving chain wheel shaft, a revolution chain is connected on the revolution driving and driven chain wheels, and a bottle support assembly is arranged on the revolution chain, and is provided with revolution wheels; an auto-rotation chain connected on the auto-rotation driving and driven chain wheels is matched with the revolution wheels, the revolution chain is provided with the pull-blowing mechanism and a bottle-taking mechanical arm, the storage hopper is connected with a transportation channel which is connected with a blank-arranging mechanism, and the blank-arranging mechanism is connected with a blank feeding mechanical arm through a slideway; the full-automatic bottle blowing machine is characterized in that one side of the revolution driven chain wheel is provided with a revolution chain tensioning mechanism, and one side of the auto-rotation driving chain wheel is provided with an auto-rotation chain tensioning mechanism.

The invention discloses a portable line tightening device, and relates to the field of power supply line construction. The portable line tightening device comprises a lifting device which is provided with a hollow square outer cylinder. The outer cylinder is provided with a rack sliding in the outer cylinder. A ratchet box is arranged in the front part of the outer cylinder. The ratchet box is internally hinged with a ratchet meshed with the rack, and is externally hinged with a handle. The front end of the handle is hinged with a front pawl which is matched with the ratchet and equipped with a torsion spring. The ratchet box is further internally hinged with a rear pawl which is disposed in back of the ratchet, matched with the ratchet, and equipped with a torsion spring. A fixing ring connected with the cross arm of a pole is arranged at the front end of the rack. The side of the fixing ring is connected through a fixing rope with a hook b which can hook a line clamping device when the lifting device is contracted to a minimum. The rear end of the lifting device is connected with the line clamping device through a hook a, and the line clamping device clamps a cable through match between a lower line clamping sleeve and an upper line clamping sleeve. The portable line tightening device is compact in structure, convenient to carry, reliable in tightening, capable of effectively preventing downward cable loosening, and applicable to occasions with large tension travel.

The invention discloses a clinic support for the hand and foot surgical department. The clinic support comprises a support body and a crank, connecting screw holes are formed in the left end and the right end of the support body, screw rods are mounted in the connecting screw holes, the lower ends of the screw rods are connected with connecting seats, and pre-buried fixed screw holes are formed inthe connecting seats. Rotary discs are fixed to the tops of the screw rods, a connecting rod is mounted on the outer wall of the crank, and the crank is located at the front end of the middle of thesupport body. A main umbrella-shaped gear is fixed to the inner end of the connecting rod, and the lower end of the main umbrella-shaped gear is connected with a secondary umbrella-shaped gear. A leadscrew is mounted at the lower end of the secondary umbrella-shaped gear, a bearing table is mounted on the outer side of the middle of the lead screw, and sliding blocks are fixed to the left end andthe right end of the bearing table. A stand column is mounted in the middle of each sliding block, and a base is fixed to the bottom end of the support body. The clinic support for the hand and footsurgical department is provided with the screw rods, the rotary discs are rotated, the screw rods can rotate accordingly, then the screw rods carry out vertical displacement, and therefore fixing operation is convenient.

The invention provides a water outlet assembly for a food waste disposer, and belongs to the technical field of smashing. The water outlet assembly for the food waste disposer solves the problem that an existing water outlet assembly is inconvenient to install. The water outlet assembly for the food waste disposer comprises a water outlet, a top plate, an upper locking ring and check rings, wherein the water outlet is shaped like a circular tube, one end of the water outlet protrudes outwards in the radial direction to form flanges, installation grooves are formed in the other end of the water outlet, the top plate is arranged on the water outlet in a sleeving mode, the upper locking ring is arranged on the water outlet in a sleeving mode, multiple bosses are formed on the periphery of the upper locking ring in a protruding mode, each boss is connected with a stopper screw in a threaded mode, the check rings are installed in the installation grooves, the upper locking ring can abut against the check rings, and the stopper screws can rotate to push the top plate to tightly abut against the flanges of the water outlet. The water outlet assembly for the food waste disposer has the advantages of being convenient to install and good in stability.

The invention discloses an LED light-emitting module based on golden finger connection. The LED light-emitting module comprises a shell (1), a lamp panel (3) and an end cap (2). One side of the shell is closed, the shell is provided with a shell slot (13) for inserting the lamp panel, and the lamp panel is inserted to the shell. The end cap is arranged on the other side of the shell and used for blocking the lamp panel. A plurality of beads (31) are arranged on the lamp panel and are LED lamps, and a golden finger (32) is arranged at the position of the side edge of the lamp panel. A plurality of contacts (12) used for connecting the golden finger are arranged in the shell slot. A window is arranged on the front face of the shell. The lamp panel is inserted into the shell, and light emitted by the beads on the lamp panel can transmit outwards from the window. According to the LED light-emitting module based on golden finger connection, the lamp panel is connected with the shell through the golden finger and the slot structure, assembling and maintaining are convenient, and flexibility is good.