271results about How to "Not easy to deform and damage" patented technology

The invention relates to an enhanced anti-pollution reverse osmosis membrane backing material and a manufacturing technique thereof. Existing reverse osmosis membrane backing materials have the defects that unit membrane area flux is low, one-time investment is high, and service life is short. The enhanced anti-pollution reverse osmosis membrane backing material is characterized by being formed through KS warp knitting of polyester continuous fibers, and membranes are formed inside the fibers, between the fibers or on the surfaces of the fibers after stiffening agent padding is conducted on the warp knit fabric. According to the manufacturing technique, after KS warp knitting of the polyester continuous fibers is finished, padding and pre-heating are conducted, then transverse hot stretching is conducted, and baking is conducted after meshes of the product are stretched to be uniform. The enhanced anti-pollution reverse osmosis membrane backing material is high in elasticity and resilience, stiff and smooth, high in conformality, suitable for the intense-pressure environment for industrial wastewater treatment, and large in thickness.

The invention discloses a material conveying device. The device comprises a rack, guide rails which are arranged at two sides of the rack, a movable support assembly arranged at the bottom part of a hopper, and a driving sprocket assembly for supplying power to enable the motion of the hopper, wherein the guide rails include a front wheel guide rail, and a rear wheel guide rail which is arranged at the bottom part of the front wheel guide rail; the front wheel guide rail and the rear wheel guide rail are provided with horizontal sections and vertical sections; vertical gaps are formed in the tail ends of the front wheel guide rail and the rear wheel guide rail; the movable support assembly comprises a fixing end which is fixed to the hopper, and a hinging end which is hinged to the fixing end; a forward moving wheel and a rear moving wheel which are correspondingly matched with the front wheel guide rail and the rear wheel guide rail are correspondingly arranged at the fixing end and the hinging end; a closed-loop driving rope which is connected with the driving sprocket assembly is connected with a connector which is fixed to the movable support assembly. With the adoption of the material conveying device, a material receiving opening of the hopper can be kept in a horizontal state all the time; in addition, the material conveying device is high in structure stability, and not liable to be deformed and damaged.

The invention relates to a connecting piece comprising a fringe frame and at least one fastener, wherein the fringe frame is a flexible fringe frame and is provided with a fixing surface, two side surfaces and a bottom surface; and the fixing surface is provided with at least one fastening hole. With the structure, the connecting piece can be used for splicing and combining various materials with corresponding inner trapezoidal grooves and can play connection and fixation functions, and therefore, the connecting piece is wide in application range and relates to materials such as wood, stone, plastics and metal. The connecting piece is large in contact area with a fixed object and is balanced in stress so that the fixed object is not easily deformed and damaged. In addition, the structure is flexible and convenient to dismount and mount and good in concealment.

The invention discloses an unmanned aerial vehicle with telescopic vehicle arms. The unmanned aerial vehicle comprises a vehicle body, a vehicle arm, a guide groove and a rotor wing assembly, whereinthe vehicle arm comprises a first arm rod and a second arm rod, one end of the first arm rod is connected with the vehicle body, a movable fastening shaft is arranged on the first arm rod, a flexiblepad is arranged at one end of the fastening shaft, and a limiting protrusion is arranged on the inner circumferential wall of the first arm rod; the guide groove extending in the axial direction of the second arm rod and is formed in the peripheral wall of the second arm rod, a plurality of limiting grooves are formed in the groove bottom wall of the guide groove and distributed in the length direction of the guide groove at intervals, the second arm rod slidably extends into the first arm rod, and the limiting protrusions are located in the guide groove; the second arm rod slides to enable the limiting protrusion to be matched with one limiting groove, and the fastening shaft moves to enable the flexible pad to abut against the second arm rod to fix the second arm rod. and the rotor wingassembly is arranged at the end, away from the first arm rod, of the second arm rod, and the device can achieve extension and retraction of the vehicle arm.

The invention discloses a fuel cell sealing method and a sealing structure. The method comprises: carrying out die design according to the shape of a membrane electrode, arranging a glue injection port and an air exhaust port on the die, fixing and clamping the prepared membrane electrode tightly with the die, then injecting the sealing material via the glue injection port until full, exhausting air and superfluous sealing material via the air exhaust port, finally, heating until the sealing material is solidified, and de-molding the die to obtain the sealing structure of the fuel cell. The invention also discloses the sealing structure of the fuel cell. The invention is simple in operation, is suitable for mass production, enhances sealing effect of fuel cell, improves discharge performance, stability and consistency, and prolongs the service life.

The invention discloses a refractory steel vimineous blind tube casting method and a mould thereof. The main point is that a compound core bone is arranged in a resin sand mould shell whose top is provided with an air exhaust hole, the bottom of the resin sand mould shell is provided with a bottom-injected pouring basin, the pouring cup height of the pouring basin is higher than the height of the resin sand mould shell. The invention adopts compound core bone to make sand core, the producing technique is simple, the mould does not deform during roasting and the bottom-injected pouring basin ensure the sand core not to be eccentric.

The invention discloses a hoisting and overturning tool of a high-pressure heater pipe system. The hoisting and overturning tool comprises two header supports, at least one jacketing support and an overturning device; each header support comprises a first supporting ring, a first annular groove with whelps at the bottom is formed in the outer circle of each first supporting ring, positioning sleeve covers are arranged on the upper side and the outer side of the inner circle of each first supporting ring, and each first supporting ring is formed by oppositely splicing a first left semi ring and a first right semi ring; the jacketing support comprises a second supporting ring, a second annular groove with whelps at the bottom is formed in the outer circle of the second supporting ring, positioning supporting frames are arranged on the upper side, the outer side, the left side and the right side of the inner circle of the second supporting ring, and the second supporting ring is formed by oppositely splicing a second left semi ring and a second right semi ring; and the overturning device comprises a band and beam, a transverse rod is arranged at the lower portion of the band and beam, one end of the band and beam is provided with a gear motor, and a plurality of chain wheels are arranged on the transverse rod. By means of the above hoisting and overturning tool, the pipe system can be conveniently hoisted and overturned, and the pipe system is not prone to occurring deformation damage during hoisting and overturning.

The invention discloses a mandible guiding forward and fixed orthodontic combined correction device, which comprises a maxillary correction device and a mandibular correction device, wherein the maxillary correction device comprises a first metal joint crown and a palate rod which are arranged on a first molar and a second premolar or a second primary molar, a first buccal tube (the formula is shown in the formula) and a pad are arranged on the first metal joint crown, an upper dentition main arch wire is arranged on the first buccal tube, (the formula is shown in the formula) and a power armis arranged on one side of the pad; the mandibular correction device comprises a second metal joint crown and a tongue arch which are arranged on the first molar and the second premolar or the primarymolar, a second buccal tube is arranged on the buccal side of the second metal joint crown, a lower dentition main arch wire is arranged on the second buccal tube, the second metal joint crown is provided with (the formula is shown in the formula) a blocking arm which matches with the power arm of the pad. According to the mandible guiding forward and fixed orthodontic combined correction device,the maxillary power arm and the mandibular blocking arm are matched to realize that the mandible is guided forwards, and the fixed correction is realized through the bracket, the upper dentition mainarch wire and the lower dentition main arch wire arranged on the tooth surface, so that the device has the advantages of strong support, convenient operation, good correction effect, sound patient experience and the like.

The invention relates to a fixing tool for a battery system vibration test. The fixing tool comprises a substrate and more than two battery system fixing clamping claws, wherein the battery system fixing clamping claws are detachably installed on the substrate; battery system fixing holes corresponding to the positions of battery system mounting holes are formed in the battery system fixing claws; and a battery system to be tested is fixedly installed on the substrate through the battery system fixing clamping claws. According to the fixing tool for the battery system vibration test, due to the fact that the battery system fixing clamping claws are detachably installed on the substrate, the battery system fixing clamping claws with various shapes, structures and sizes can be made for fixing the battery systems with different specifications, shapes and sizes in actual use, and thus the function of the fixing tool can be realized to the maximum.

The invention provides an expansion screen pipe which comprises an inner layer pipe, a middle layer pipe and an outer layer pipe, wherein the inner layer pipe, the middle layer pipe and the outer layer pipe are fixed and mounted in a sleeved mode in sequence from inside to outside. Multiple kerfs are distributed in the pipe wall of the inner layer pipe, the middle layer pipe is formed by coiling filaments spirally, and multiple holes are also distributed in the pipe wall of the outer layer pipe. The expansion screen pipe has the advantages that the granulometric class of filtered gravel can be controlled accurately, an oil drainage area is enlarged through expansion hole enlargement, oil flow resistance is reduced at the same time, and crude oil produced by a single well daily can be improved by 30-50 percent.

The invention discloses a treatment method for a soybean straw woven wicker product. The treatment method comprises the following steps of soaking, air drying, core removing organizing, weaving processing, fumigating, dying, paint spraying, waxing and finished product drying. According to the provided treatment method for the soybean straw woven wicker product, a soak solution is reasonably prepared according to the chemical component of soybean straw, and a processing mode suitable for the soybean straw is adopted; and the manufactured wicker product is good in condition and toughness and not prone to being deformed and moreover has anticorrosion and anti-insect functions.

A method for fabricating bearing bushes includes fixing two bearing bush blanks onto a first gear shaft and a second gear shaft of a joint fabricating machine respectively and enabling the two bearing bush blanks to be in proper opposite arrangement; checking the compliance with the tolerance range; adjusting the first gear shaft and the second gear shaft and machining the two bearing bush blanks respectively with a tool; removing the two bearing bush blanks and clamping the two bearing bush blanks onto a sawing machine respectively for surface sawing for obtaining flat and neat end surfaces; placing the two bearing bush blanks in an ultrasonic cleaner, wherein the cleaning liquid is the mixed fluid which is composed of ethanol, oil and diamond and is used for grinding, lubrication and the like; and grinding the bearing bush with the abrasive diamond as the finishing is performed. According to the method for fabricating the bearing bushes, the bearing bushes is good in quality, abrasive, not prone to deformation and damaging, the smooth rotation can be guaranteed effectively and the process is simple.

The invention relates to an antibacterial enhanced low-temperature-resistant slow-rebound polyurethane sponge and a preparation method thereof. The preparation method comprises the following steps: firstly, treating by using KH-590 to obtain thiolated graphene oxide, synthesizing cationic graphene oxide loaded allicin Alc-S-GO < + > by using a click chemistry principle of sulfydryl and allicin, and taking the cationic graphene oxide loaded allicin Alc-S-GO < + > as an antibacterial enhancer, preparing KH-151 grafted polyether modified silicone oil to serve as a low-temperature-resistant agent to improve the compatibility and low-temperature resistance of a system, and finally adding Alc-S-GO < + > and the KH-151 grafted polyether modified silicone oil into a specific formula to prepare the antibacterial enhanced low-temperature-resistant slow-rebound polyurethane sponge, so that the strength, the low-temperature resistance, the antibacterial property and the like of the polyurethane sponge are greatly enhanced; and the method has huge social and economic benefits in actual production and application.

The invention discloses an electromagnetic heating insertion-type plastic pipeline fusing and adhering technology. Under the matching action of electromagnetic heating equipment, the electromagnetic heating insertion-type plastic pipeline fusing and adhering technology is used for fusing and adhering insertion-type plastic pipes in the production and domestic water engineering plastic pipeline construction with the requirements for environment protection. A hot melt adhesive membrane (03) is a cylindrical structure body with a nonelastic net contraction port (032) and is made by filling meshes of a magnetic conductivity material net (12) with a hot melt material (11) or completely coating the magnetic conductivity material net (12); the magnetic conductivity material net is formed by weaving environmental-friendly and nontoxic magnetic conductivity metal material wires; the hot melt material (11) can consist of plastic, an adhesive or a mixture of the plastic and the adhesive; the net contraction port (032) is a nonelastic ring-shaped body with sufficient intensity and is bound with one end of the hot melt adhesive membrane (03); the hot melt adhesive membrane (03) has a certain extending and retracting capacity so as to be tightly sleeved on a direct insertion pipe (04) for fusion and adhesion of butted-type plastic pipelines.

The invention discloses a gas compressor with damping boss guide vanes. The gas compressor is composed of a machine body assembly, a supercharging device and a servo motor. The supercharging device isinstalled between a gas inlet and a main gas chamber of the main body assembly, gas supercharging is achieved, the supercharging process is stable, energy consumption is low, and high supercharging is achieved according to practical requirements. The servo motor is installed on the outer wall side of a shell. The guide vanes adopted in the gas compressor are simple in structure, damping bosses inthe middles of the guide vanes and the vanes are assembled to be in an annular shape to restrict each other, rigidity is increased, the inherent frequency of the vanes is changed, the bending torsional stress of the roots of the vanes is reduced, damping boss combined faces of the guide vanes are sprayed with wear resisting alloy, and the damping effect can be achieved during vibration of the guide vanes. Impellers adopted in the gas compressor are large in gas suction amount, low in noise, high in working efficiency, no prone to deformation and damage and long in service life, flow equalizing processing for gas suction and gas exhaust can be achieved, and balance of gas pressure in the shell is ensured.

The present invention discloses a positioning device for guiding bonding of labial brackets and a manufacturing method of the positioning device. The positioning device manufactured by the method consists of a splint (1), marking blocks (3) and connecting blocks (6) which are fixedly connected into a whole, a functional surface of the splint is provided with occlusion teeth marks (2), and a non-functional surface of the splint is a horizontal smooth surface; the number of the connecting blocks (6) is the same as that of the marking blocks (3), and the connecting blocks are connected with palatoglossal side surfaces of the marking blocks (3) to form a structure with a longitudinal cross-sectional shape of a reversed L-shape or an L-shape; and a gingival end face of each marking block (3) for positioning is matched with an adjacent binding face of a bracket (7). The manufacturing method is simple and mature, and easy to popularize, the obtained positioning device is simple in structure and convenient to operate, accuracy of bracket bonding positions can be ensured from multiple angles, efficiency of clinical operation is improved, besides, the positioning device is firmer, and the positioning device is not liable to deform and damage in actual manufacturing, packaging and transportation processes.

The invention discloses a checkpoint intelligent non-inductive security check device. The checkpoint intelligent non-inductive security check device comprises a security check lane, a lifting groove,a housing, a supporting frame, a hydraulic cylinder, a lifting frame, a transmission rod, a tire puncture plate, tire puncture nails, a tire puncture opening, plate grooves, supporting rods, guide rods, slide blocks, first springs, connecting rods, upper connecting seats, lower connecting seats, fixing rods, buffering frames, second springs, clamping blocks, buffering blocks, buffering rods, buffering grooves, locating rods, locating holes and guide wheels. According to the checkpoint intelligent non-inductive security check device, by improving an existing tire puncture device, the structuraldesign is more reasonable, the anti-deformation ability is enhanced, the stability is enhanced, and the device is not prone to being damaged and deformed; when a vehicle to be checked intends to passes without being allowed, a tire of the vehicle can be punctured by using the tire puncture nail on the surface of the tire puncture plate so as to realize an effect of intercepting the vehicle; and after the vehicle is checked and has no error, the tire puncture plate and the tire puncture nail on the surface of the tire puncture can be folded into a cavity of the housing together to enable the vehicle to pass conveniently.

The invention discloses an installation structure for an L-shaped feet-lock bolt. The installation structure comprises a surrounding rock stratum, a steel arch and the L-shaped feet-lock bolt, and further comprises a regulator; the L-shaped feet-lock bolt comprises a rod part and a tail end part perpendicular to the rod part; the regulator comprises a mounting plate, and the mounting plate is fixedly connected to the side, backing onto the surrounding rock stratum, of the steel arch; a rotating base is fixedly connected to the mounting plate; a circle of first meshing teeth are arranged in thecircumferential direction of the upper surface of the rotating base; a rotary base is connected to the rotating base, is provided with a circle of second meshing teeth engaging with the first meshingteeth and is connected to the rotating base through a bolt in a locked mode; a welding plate is fixedly connected to the rotary base; and the tail end part of the L-shaped feet-lock bolt is welded and fixed to the welding plate. The installation structure can be adaptable to installation of the L-shaped feet-lock bolt at different angles.