42results about How to "No permanent deformation" patented technology

The invention relates to a detecting device for detecting the deformation of the oil and gas transmission pipeline, which is applied to the nondestructive detection of the oil and gas transmission pipeline. The detecting device comprises a main body, a guide leather cup, a measuring leather cup, a sensor stay bar, a leather cup tightening spring, a linear displacement sensor, a driving leather cup, an odometer wheels direct supporting arm, an odometer wheel, an odometer wheels oblique supporting arm and a measuring leather cup retaining ring. The main body is provided with an information storehouse and a battery storehouse. The leather cup tightening spring and the linear displacement sensor are uniformly arranged on the main body excircle. The detecting device of the invention can complete the deformation detection of the pipeline, and determine the deformation position of the pipeline, namely the detecting device is driven via pressure difference (oil, water or gas) and runs in the pipeline; the measuring leather cup clings the pipe wall and changes with the pipe wall; the change information is stored in a storage; two odometers on the detecting device measure the travel distance, and the odometer information is also stored in the storage; when the detecting device runs out of the pipeline, the information is taken out to process comprehensive analysis and calculation so as to realize the detection of the pipeline.

The invention discloses a natural rubber composite material with modified crystal whiskers and a preparation method thereof. The preparation method comprises the following steps: (1) plasticating natural rubber in an open mill to obtain plasticated rubber; (2) mixing the plasticated rubber: when the plasticated rubber wraps a roller, adding stearic acid, zinc oxide, accelerant, modified whiskers and brimstone for mixing, thereby obtaining a sizing material; and (3) and heating the sizing material in a vulcanizing press for vulcanizing, thereby obtaining the natural rubber composite material with the modified whiskers. The invention carries out effective surface modification on the whiskers by ultrasonic treatment and adds the modified whiskers to the rubber to obtain the natural rubber composite material. The mechanical properties and wear-resisting property of the natural rubber composite material are obviously enhanced; and the invention has the advantages of simple technological conditions for modification, low cost and wide application prospects.

The invention discloses a large-aperture rubber positive-negative pressure hose for a shield construction machine, which comprises a gold size adhesive (1), a curtain rubber adhesive (2), a inner rubber (3), an inner cord fabric (4), a steel wire (5), a middle rubber (6), a middle cord fabric (7) and an outer rubber (8). The large-aperture rubber positive-negative pressure hose adopts the technical proposal of adopting a novel hose structure and applying corresponding adhesives to different agglutinating interfaces, so as to overcome the disadvantages that the large-aperture rubber positive-negative pressure hose for the shield construction machine produced by the prior art cannot meet the technical requirement, the hose joint is easy to fall off, and the adhesive layers of all layers of rubbers, the rubbers and terylene cord fabrics, and the cord fabrics and the steel wire are separated; the large-aperture rubber positive-negative pressure hose for the shield construction machine reaches the aim of meeting the requirements that the hose can bear the positive pressure of 15bar, without leakage, partial bubbling and permanent deformation of the pipe body, and bear the negative pressure of 0.9bar, without absorbing flatness and deformation of the pipe body; the large-aperture rubber positive-negative pressure hose does not have abnormity and damage when the bending radius is less than or equal to 2; the inner layer abrasion value is less than or equal to 1.0cm<3> per 1.61 kilometers; and the adhesive strength of the rubbers and a metal pipe joint is more than or equal to 1.5kN / m<2>.

The present invention provides a method of preparing a wood-plastic composite material from cherry wood chips, and the method comprises the steps of wood chip treatment, mixing, granulation, and forming. According to the method, the wood chips are firstly modified with calcium stearate and nano-alumina, and then mixed with modified basalt fiber, glass fiber, waste plastic, nano zinc oxide and magnesium salt whisker for granulation and forming. The prepared wood-plastic composite material uses the cherry wood chips and the waste plastic as main materials, is beneficial to the reuse of waste andscrap, can save energy and relieve environmental pressure, and has better mechanical properties.

The invention belongs to the technical field of composite materials, and relates to a thermoplastic composite material floor and a preparation method and a preparation apparatus thereof. The thermoplastic composite material floor consists of thermoplastic resin and continuous filaments which are dispersed in the thermoplastic resin in parallel along the horizontal direction of the floor in a lamelleted shape. Compared with the prior art, the preparation method has the advantages that the technology is simple, the operation is easy, the floor can be directly formed, the forming is easy, and the forming period is short; compared with the defects of mutability, easiness in wear and the like of the traditional solid wood floor and wood plastic composite floor, the floor obtained by the preparation method has the advantages that the deformation resistance is more excellent, the permanent deformation does not occur, the durability is better, and the weather ability and the corrosion resistant capacity are better.

The invention discloses a car body rear floor board device, comprising a rear floor board foreside panel assembly, a rear floor board rearward panel assembly, a rear wall assembly, a spare wheel case assembly and a rear floor board frame assembly, wherein, the rear floor board foreside panel assembly, the rear floor board rearward panel assembly, the rear wall assembly, and the spare wheel case assembly are combined on the rear floor board frame assembly; the left and the right longitudinal beams of the rear floor board frame assembly are respectively provided with a buffering structure which is a groove. The rear floor board rearward panel assembly comprises a first main board, a second main board and a third main board; wherein, the third main board retreats downwards relative to the first and the second main boards. The invention improves the safety of the car when rear collision happens and effectively reduces the production and use cost of the car.

The invention relates to a steel wire batched physical rust removal device, and belongs to the technical field of steel wire surface treatment. The device comprises a vertical shelling wheel, a transverse shelling, a spiral steel wire brush and a rust removal machine; the vertical shelling wheel comprises a first rolling wheel and a second rolling wheel which are arranged vertically, the first rolling wheel is located on the upper portion of the second rolling wheel, and the highest point location of a wheel groove of the second rolling wheel is located between the highest point location and the lowest point location of the first rolling wheel; the transverse shelling wheel is horizontally arranged on the right side of the second rolling wheel, the spiral steel wire brush and the rust removal machine are sequentially arranged on the left side of the vertical shelling wheel, a steel wire passes through the wheel groove at the lowest point of the wheel groove of the second rolling wheeland then continues to drive forwards by surrounding the transverse shelling wheel; the spiral steel brush is composed of a spiral rod and a rust removal wire, and one end of the rust removal wire is fixedly arranged on the inner surface of the spiral rod. The steel wire batched rust removal device and process can achieve the pickling effect, and chemical pickling rust removal can be completely replaced.

The invention provides a complex thin wall aluminum alloy stair die casting forming technology. Special software is adopted for conducting the mechanical performance analysis on a complex thin wall aluminum alloy stair structure, then special software is applied to conduct the die casting technology performance analysis on a complex thin wall aluminum alloy stair, the above two steps are repeatedly conducted, interactive iteration is conducted, and dual optimization is conducted. A method of interactive and iterative optimization of the mechanical performance analysis and the die casting technology performance analysis is adopted, and accordingly dual optimization for lightweight and casting forming performance of the complex thin wall aluminum alloy stair structure is achieved. The tread face wall thickness of the aluminum alloy stair obtained through the technology is smaller than or equal to 1.88 mm, the kicking face wall thickness of the aluminum alloy stair obtained through the technology is smaller than or equal to 1.81 mm, and the overall weight of the stair is smaller than or equal to 10.5 kg; after 500-3,000 N of static load, permanent deformation is avoided; and during supporting of the largest inclination angle (35 degrees) under the dynamic load of 500-3,000 N, permanent deformation is smaller than or equal to 2.1 mm, damage is avoided, and the technology level of a die casting product is domestically advanced.

The invention relates to a system for deviating part of the external panelling of a motor vehicle, in particular the motor bonnet or the boot lid during a collision, in order to reduce the impact energy of a person colliding with said deviated part on the exterior of the motor vehicle, by displacing the part in the opposite direction to that of the deviation. Said system comprises a device for deviating part of the outer panelling, which is engaged at least at one point on the part and permits a displacement of the part against the deviation direction if a person collides with said part. According to the invention, the deviation direction (2) is controlled in accordance with the moment, the point and / or the direction of collision, in such a way that depending on the moment, and / or point and / or direction of collision with the deviated part (M) of the external panelling, the deviation device (2) permits a displacement of the part (M) of the external panelling against the direction of deviation (a), or counteracts a displacement of this type, thus preventing the latter.

The invention discloses a knuckle bearing based slide joint. The knuckle bearing based slide joint comprises an outer lug plate, a knuckle bearing, a hinge pin and a middle lug plate. The outer lug plate comprises two side lugs arranged at an interval, an inner ring of the knuckle bearing fixedly sleeves one end of the hinge pin, and the other end of the hinge pin is fixedly connected with the middle lug plate. Opposite sides of the two side lugs are provided with slide portions protruding inwards respectively, a slide plate is fixed to each slide portion, the outer periphery of an outer ring of the knuckle bearing is provided with two parallel slide planes which are clamped between the two slide plates, and each of the two slide planes is in slide connection with the corresponding slide plate on the same side. The knuckle bearing based slide joint is mounted in a building structure, a mechanism connected with the outer lug plate and a component connected with the middle lug plate are capable of rotating mutually within a certain range and further capable of moving vertically and transversely, wind resistance and seismic resistance are realized, permanent deformation of the building structure is avoided, and safety of the building structure is guaranteed.

The invention discloses a composite material door panel for a bottom side door of an open top wagon. The composite material door panel is prepared from the following components in part by weight: 95-99.9 parts of prepreg tape and 0.01-5 parts of non-woven fabric. A preparation method of the composite material door panel for the bottom side door of the open top wagon comprises the following steps: neatly laying up the prepreg tapes to reach the set thickness according to the angle, arranging the non-woven fabrics on the upper surface and the lower surface of the prepreg tape layer, and adopting a mold pressing forming method to enable the laid prepreg tape layers and the non-woven fabrics to be prepared into the composite material door panel for the bottom side door of the open top wagon. The door panel is rustless, has corrosion and deformation resistance, is light, can be replaced and repaired conveniently and can be recycled.

The invention discloses a resin lining steel molding plate for an undevelopable cone curve face structure. The resin lining steel molding plate comprises a steel framework manufactured according to a conventional method. The steel framework is fixedly connected with more than two trapezoidal panels, slits of 0-20mm are formed between the adjacent trapezoidal panels, the slits between the trapezoidal panels are sealed, and epoxy resin glass fiber layers are integrally arranged on the front of the trapezoidal panels and the slits of the trapezoidal panels to form the resin lining steel molding plate consistent with the shape of the undevelopable cone curve face. The invention further discloses a manufacturing method for the resin lining steel molding plate for the undevelopable cone curve face structure. By utilizing the characteristics of the steel molding plate and epoxy resin, the large steel framework resin lining steel molding plate having the existing strength and rigidity and conforming to the surface shape of the structure is obtained through a simple manufacturing process, the structure surface shape molding plate conforming to a design drawing is formed, and the design idea is achieved well.

Front member applicable to capacitive display screen (1) panel of electronic devices comprising a fixing element coupled to a screen or to a portion of the casing bordering the screen of the device and a thin, transparent foil-like surface mounted on the fixing element in a given gap distance from the display screen. The foil-like surface (3) is made from a resilient material. When force (F) is applied on a point of the foil-like surface (3) in the direction of the display screen (1) it is able to stretch to form, without permanent deformation, a funnel-shaped elongation (6) within the gap distance (h). The foil-like surface (3) is electrically conductive at least to a certain extent.

The invention discloses a persistent hydrophilic polypropylene separation net material and a preparation method thereof. A magnesium sulfate whisker stiffening modification technology and a hydrophilic substance slow-release traction technology are combined, and a hydrophilic agent is pulled to the surface of a material by utilizing the self-polymerization capability of dopamine to form a uniform hydrophilic layer; and a hydrophilic substance is locked by utilizing the slow-release and confining effects of a slow-release agent such as EAA sodium salt, so that the separation net material not only has good appearance, stiffness, solvent resistance and mechanical comprehensive performance, but also has permanent hydrophilic performance and lasting anti-pollution performance. The method is simple, the performance is excellent, the effect is obvious, the good industrial application prospect is achieved, the prepared partition net material has the advantages of being good in supporting and flow dividing effect, resistant to corrosion, efficient, lasting in anti-pollution performance and easy to clean, the problem of attachment of fine particles can be greatly solved, the use efficiency of fluid handling components is greatly improved, and the life of the fluid handling components is prolonged; and the fluid treatment components is suitable for the fluid treatment components which are in close contact with hydrophilic fluid and need isolation supporting and flow dividing effects.

The invention discloses an artificial ecological floating bed based on a foamed polypropylene material. A foamed polypropylene floating plate is arranged, and planting holes are formed in the foamed polypropylene floating plate, so that the characteristics that the foamed polypropylene material is nontoxic, odorless, free of secondary pollution, simple and convenient to recycle and regenerate, high in adsorption rate to bacteria in water, high in impact resistance, stable and reliable in floatability, and the using temperature difference range is -30-130 DEG C can be fully played.

The invention relates to a multifunctional pin taking-out device special for the replacement of a spring pin of an insulator during hot-line work, and is applied to the power industry. The multifunctional pin taking-out device comprises a main rod body which can be connected to an insulating operating rod, an impact hook, a bracket, a simplex elbow taking and placement fork, a pin striking hammer and a spring pin taking and placement clamp, wherein the impact hook consists of a hook rod, a hook rod mounting sleeve and a hook head; the hook rod mounting sleeve is detachably connected to the main rod body; the hook rod is arranged on the hook rod mounting sleeve; the hook rod and the hook rod mounting sleeve form a telescopic connecting structure; the hook head is arranged at the front end of the hook rod in a rotating way through a pin shaft; the bracket is assembled at a position behind the impact hook on the front part of the main rod body; the pin striking hammer and the simplex elbow taking and placement fork are fixed on the lower part of the bracket respectively; and the spring pin taking and placement clamp is assembled on the upper part of the bracket. The multifunctional pin taking-out device is rational, compact and practical in structure and convenient to operate; working efficiency can be greatly improved; the condition that power is required to be cut off for the conventional operation can be avoided; and economic benefits can be created, and social benefits can be improved.

The invention relates to the technical field of sensing materials, in particular to a composite fiber and a preparation method thereof, a graphene flexible temperature sensing array and a preparation method thereof. The composite fiber of the present invention includes a polymer fiber layer, a graphene-polymer fiber composite layer and a graphene layer from inside to outside. The composite fiber of the present invention has excellent strain adaptability, no permanent deformation, and the fluctuation of resistance is kept within 1.5%, and the graphene flexible temperature sensing array prepared by it can satisfy temperature sensing and strain adaptability at the same time, It can provide close-fitting and accurate temperature measurement.

The invention relates to a detecting device for detecting the deformation of the oil and gas transmission pipeline, which is applied to the nondestructive detection of the oil and gas transmission pipeline. The detecting device comprises a main body, a guide leather cup, a measuring leather cup, a sensor stay bar, a leather cup tightening spring, a linear displacement sensor, a driving leather cup, an odometer wheels direct supporting arm, an odometer wheel, an odometer wheels oblique supporting arm and a measuring leather cup retaining ring. The main body is provided with an information storehouse and a battery storehouse. The leather cup tightening spring and the linear displacement sensor are uniformly arranged on the main body excircle. The detecting device of the invention can complete the deformation detection of the pipeline, and determine the deformation position of the pipeline, namely the detecting device is driven via pressure difference (oil, water or gas) and runs in the pipeline; the measuring leather cup clings the pipe wall and changes with the pipe wall; the change information is stored in a storage; two odometers on the detecting device measure the travel distance, and the odometer information is also stored in the storage; when the detecting device runs out of the pipeline, the information is taken out to process comprehensive analysis and calculation so as to realize the detection of the pipeline.

The invention discloses a device and method for determining the absolute reference zero point of a high-precision motor. The device comprises a motor, a lead screw, a rack and a detection system, andis characterized in that a static part of the rack is provided with spring steel extending outwards, a resistance strain gauge is pasted on the surface of the spring steel, a motor rotor is connectedwith the lead screw, the lead screw is provided with a load, when the load moves to an absolute reference zero position along with the lead screw, the load makes contact with the spring steel, the spring steel and the resistance strain gauge deform, the resistance change of the resistance strain gauge is converted into the change of a voltage signal through a bridge circuit arranged in the detection system, and the voltage value detected at the moment is set to be zero point voltage, and is used as a reference preset value when the motor returns to zero. According to the method, when the loaddoes not make contact with the spring steel, the situation that the voltage reaches the set value is avoided, and then the error rate is low; and the problems of zero point errors, low precision and the like existing in mechanical locked-rotor current detection and mechanical switch zero point position detection at present are solved.

The invention discloses an urban street monitoring device installation structure. The urban street monitoring device installation structure comprises a bottom plate and oblique baffles. The two ends of the bottom plate are connected with one side of a bent part, and the other side of the bent part is connected with the ends of the baffles. The upper end of the bottom plate is provided with a groove vertically extending downwards, and the width of the groove is gradually decreased. The bent part is in a U shape or a W shape or a wave shape. The urban street monitoring device installation structure further comprises a hoop and an installation plate parallel to the bottom plate. The side face of the installation plate is provided with a protrusion matched with the groove, and the protrusion is arranged in the groove in a sliding mode. The hoop penetrates through the ends of the two baffles. When a monitor is replaced or maintained, only the installation plate needs to be taken out of the groove, then maintaining or replacing is carried out without replacing a fixing support, the fixing support can be repeatedly used, and cost and workload of installation and maintenance are reduced.

The invention discloses a formula and a production process of a co-polypropylene foamed plastic. By using co-polypropylene as a raw material, the obtained foam product has the advantages of light mass, high strength, low cost, good heat resistance, degradability and easy recovery, etc., and has no influence on the environment. Meanwhile, resources are saved, the processing process is simple, and the processing equipment involves traditional machines, so that there is no additional increase of equipment investment, and the cost can be reduced to the utmost. With excellent heat insulation, sound absorption and noise reduction properties, the co-polypropylene foamed plastic is very suitable for home decoration.

The present invention relates to a passage control device for persons, comprising at least one housing 1, at least one blocking element 8 held so as to be movable relative to the housing 1, a drive 16, arranged substantially in the housing 1, for blocking and releasing and / or moving the at least one blocking element 8, and a control unit 17 for the drive 16, which acts in combination with a control element 10 for identifying an authorization, and which is designed such that it controls the drive 16 in accordance with the authorization, in order either to block or release, and / or to move, the blocking element 8. The housing 1 is constructed having a frame element 2 composed substantially of a plastic or a plastic composite material, having a support structure 18, arranged inside the frame element 2, for the blocking element 8 and the drive 16, and having a rear and a front cover plate 6, 11, which are composed substantially of a plastic or a plastic composite material and fastened to the frame element 2.

The invention discloses a quick installation method for a monitor outside a finishing factory. First, the bottom plate and the baffle are fixed on the rod-shaped support structure on the city street through a clamp, and a groove extending vertically downwards is set on the bottom plate. , the protrusion matching the shape of the groove is slidingly set in the groove, and the groove width of the groove decreases gradually along the vertical direction, so that the mounting plate can automatically snap into the groove under its own gravity after sliding down a certain distance In order to ensure the stability of the monitor; two circular hoops vertically bind the fixed bracket on the rod-shaped support structure, and the end of the baffle acts as a support point in contact with the rod-shaped support structure. When the monitor and its bracket When the swing occurs due to the influence of external wind, the curved part buffers part of the stress on the bottom plate from the monitor, and concentrates the remaining stress on the two points where the baffle and the rod-shaped support structure are in contact, adding a fixed bracket and a rod. The contact point of the rod-shaped support structure makes the force exerted by the clamp on the rod-shaped support structure more uniform.