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 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 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 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 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 relates to a digital railway vehicle cab framework which comprises a front-end framework, a cab sealing structure, a vehicle connecting seat, a coupler mounting seat and an anti-collision device, the cab sealing structure is welded and fixed to the front-end framework to form a front sealing integral structure, and the sealing integral structure is welded and fixed to the upper portion of the coupler mounting seat; the vehicle connecting seat is welded and fixed to the front portion of the coupler mounting seat, and the anti-collision device is fixed to the front portion of the coupler mounting seat through bolts. The framework has the characteristics of simple structure, high production efficiency and low cost. The cab is free of permanent deformation and mainly comprises the front-end framework, the anti-collision device, the coupler mounting seat and the like, the anti-collision device is connected with a vehicle body through bolts, and replacement after collision in later operation is facilitated.

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 a pressure-resistant clamp. The pressure-resistant clamp comprises a clamp body fixed out of a cylindrical clamped body; an outer hoop sleeves the clamp body and is uniformly connected with a plurality of brace struts; and each brace strut is fixed on the outer hoop through an iron wire. According to the invention, since the clamp body is sleeved by the outer hoop and the plurality of brace struts are uniformly arranged on the outer hoop, the clamp can expand outwardly with gas while a gas container expands outwardly due to great pressure in the gas container, and a worker can rotate the brace struts to adjust the degree of tightness of the clamp when the pressure in the gas container decreases or when the gas container is free of gas, thereby realizing adjustment of the deformation degree of the gas container; thus, permanent deformation of the gas container is prevented, potential safety hazards are avoided, and the service life of the gas container is prolonged.

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.