42results about How to "Continuous force" patented technology

The invention relates to a surface treatment method for forming a nanometer gradient structure on a surface layer of a shaft metallic material. The invention aims to solve the problems that the surface roughness of the material to be treated is higher, the surface smoothness is not high and a nanometer crystal structure is difficult to form on the surface of a workpiece in the prior art. A spherical treatment tool is adopted to roll on the surface of the rotary shaft metallic material, and meanwhile, the spherical treatment tool moves along the axial direction of the workpiece, and plastic deformation is generated on the surface layer of the material, so that grains on the surface layer of a workpiece material are refined to form the nanometer gradient structure, wherein the depth of the deformation layer of the nanometer gradient structure reaches 100-300 micrometers; and the grains on the surface layer of the workpiece material are nanometer grains, submicron grains, deformation grains and initial grains in sequence in size from the surface to the inside. According to the processing method provided by the invention, the integral mechanical property of the material is improved through improving the microstructure of the surface layer, thereby, the service life of the material is prolonged. The processing method provided by the invention is small in investment and is simple and convenient in operation.

The invention relates to a slidable spherical hinge support with great anti-pulling force, comprising a base, a top plate, a support bottom plate, a spherical hinge supporting structure, a force transfer piece and an anti-pulling piece, wherein the spherical hinge supporting structure is positioned in the base; the base and the top plate are integrated into a whole to form a support shell; the support bottom plate is positioned below and fixed with the support shell; the support shell is provided with an inner cavity; the spherical hinge supporting structure, the force transfer piece and the anti-pulling piece are all positioned inside the inner cavity of the support shell, wherein the spherical hinge supporting structure is positioned on the bottom of the inner cavity and is supported on the support bottom plate; the top surface of the spherical hinge supporting structure supports the force transfer piece; a base and a vertical main body of the force transfer piece form a reverse T shape structure as a whole; the anti-pulling piece is arranged around the vertical main body of the force transfer piece and is supported on the base of the force transfer piece; the upper surface of the anti-pulling piece is limited by the inner surface of the top of the support shell; the vertical main body of the force transfer piece passes out from the top surfaces of the anti-pulling piece and the support shell, and is used to be connected with other construction pieces. The spherical hinge support has great anti-pulling force, which is suitable for building structures.

A locking assembly for locking at least one electronics card to a rack, the assembly comprising:

• • at least one electronics card;
  • a rack having a bottom plate with at least one housing; and
  • a locking system for locking the card on the rack;
  • the locking system including at least one resilient prestress element for prestressing the electronics card when it is fastened to the rack.

The invention discloses a connecting structure of a prefabricated concrete wall body, and belongs to the technical field of a building structure. The connecting structure of the prefabricated concrete wall body comprises a first prefabricated concrete wall body and a second prefabricated concrete wall body, wherein the positions of the first prefabricated concrete wall body and the second prefabricated concrete wall body, which are close to the end surfaces, are provided with longitudinal communicating holes; the end surfaces are provided with a plurality of horizontal grooves; horizontal grooves of the first prefabricated concrete wall body and the second prefabricated concrete wall body are distributed in a staggering manner; the end surfaces of the first prefabricated concrete wall body and the second prefabricated concrete wall body are provided with U-shaped steel bars which are convex outwards from the inner part of the wall body, and the U-shaped steel bars extend to the positions close to the top surfaces of the horizontal grooves of the second prefabricated concrete wall body and the first prefabricated concrete wall body; and the horizontal grooves, the longitudinal holes and the space between the end surfaces of the prefabricated concrete wall bodies are filled with cast-in-place concrete. The connecting structure disclosed by the invention has the advantages that the integrity of the assembling integration type concrete structure can be improved and the performance of the building structure can be improved.

The invention discloses a drone noselanding gear well section based on catapult-assisted take-off. A landing gear well comprises partition frames at the two ends, a girder connected with the partitionframes and a skin; a landing gear fixing compartment is arranged in the middle of the landing gear well, a framework of the landing gear fixing compartment comprises four main girders, the main girders are fixedly connected with the partition frames, and partition plates are arranged at both the two sides of each main girder and the partition frames; the main girders and the partition plates forman integrated wall plate girder, the wall plate girder is hinged to a landing gear main support and a landing gear slant supporting rod, and openings are formed in the skin at the lower portion of the landing gear fixing compartment. The landing gear well is of a box body type structure low in structural weight, the openings are formed among the main girders, the rigidity of other parts of the landing gear well and the rigidity of an overall aircraft cannot be lowered, and additional strength reinforcement setting is also not needed; the wall plate girder penetrating through the whole box body has the advantages of being continuous in stress and short and direct in force transmitting path, and transmitting of instantaneous impact large loading concentrated force and torque inside the structure is benefited.

The invention discloses a caked chemical fertilizer mashing machine. The caked chemical fertilizer mashing machine is characterized in that the caked chemical fertilizer mashing machine comprises a supporting plate and a pushing handle fixed to one end of the supporting plate; a bearing plate is fixed to the supporting plate, and a servo motor is fixed to the bearing plate; a rotary disc is fixedto a motor shaft of the servo motor, and a first connecting rod is eccentrically hinged to the rotary disc; a second connecting rod is hinged to the end, away from the rotary disc, of the first connecting rod, and a third connecting rod is hinged to the end, away from the first connecting rod, of the second connecting rod; the middle of the second connecting rod is rotationally connected to the bearing plate, and a fourth connecting rod is hinged to the end, away from the second connecting rod, of the third connecting rod; a sleeve is fixed to the bearing plate, and the fourth connecting rod slides in the sleeve; and a mashing block is fixed to the end, away from the third connecting rod, of the fourth connecting rod. The caked chemical fertilizer mashing machine has the advantages that the striking structure is reliable, striking force exerting is continuous, and the caked chemical fertilizer mashing effect is good.

One embodiment of the horsepower amplifier module (FIG. 2) proofs the usefulness of a new approach to mechanical interventions. Mechanical advantage principles and the laws of leverage are fully exploited to increase energy efficiency while operating any horsepower producing means. Newly designed pressure ring (60), and pressure ring (61), are mounted respectably on rotary assemblies (FIG. 2B) and (FIG. 2C). Rotational energy applied to assemblies prompts the lateral displacement of components (60) and (61). A more powerful force is created and is directed to collector (78). Multiple modules supplying energy to same shaft (as shown in FIG. 3) offer a variety of options for effective operation of adopted application. A second embodiment (FIG. 4) is described as a possible arrangement available to enhance the overall capabilities of the horsepower multiplier module.

The invention relates to a probe bracket for the ultrasonic artificial detection of a steel plate. The probe bracket comprises a shell, a stress application part and a displacement part, wherein the shell comprises a base and an upper support seat connected with the base by screw thread; the base and the upper support seat are respectively provided with a center hole used for arranging a probe; the upper end of the probe is connected with an ultrasonic detector by a lead; the stress application part is a spring arranged between the upper support seat and the probe; the displacement part comprises a pull rod connected with the upper support seat. The probe bracket for the ultrasonic artificial detection of the steel plate mainly comprises the upper support seat, the base, the spring and the pull rod, so that the manufacturing cost is low and maintenance is not needed; the upper support seat, the base and the spring are assembled, so that the stress applied to the probe is uniform, stable and continuous under the action of the elastic force of the spring; the distance between the lower end surface of the probe and the steel plate is stable, so that the coupling effect is improved, the detection sensitivity and the reflection echo are in accordance with the standard requirements, and defect misjudgement or missing detection can be avoided.

The invention relates to the field of metal material surface nanocrystallization, in particular to an ultrasonic liquid knife impacting metal material surface nanocrystallization method and a specialdevice thereof. According to the method, a high-pressure liquid is adopted to carry high-energy ultrasonic waves, and the surface of a metal material is impacted through a liquid knife nozzle. The method comprises the following steps: 1, matrix pretreatment, specifically, carrying out conventional surface polishing and cleaning by using acetone and alcohol; and 2, surface nanocrystallization, specifically, adopting the high-pressure liquid to carry the ultrasonic energy waves and move at a high speed to impact the surface of the metal material. The device comprises a liquid knife device and anultrasonic generating device, wherein the ultrasonic generating device comprises an ultrasonic generator, an ultrasonic horn and an ultrasonic transducer; and the liquid knife device comprises a liquid knife liquid inlet pipe, an impact liquid tank, a liquid knife nozzle and a liquid knife pressurizing tank. According to the method and the device, through the processing method for generating plastic deformation on the surface layer of the material, the grain size of the surface layer of the material is formed into a structure sequentially comprising nano-sized grains, submicron-sized grains,deformed grains and initial grains from the surface to the inside.

The invention relates to a saddle-shaped spatial pre-stressed ring beam. The saddle-shaped spatial pre-stressed ring beam consists of an inner ring beam, an outer ring beam and radial beams, wherein the inner ring beam is connected with the outer ring beam through the radial beams; the inner ring beam is a multi-span uniform-section continuous variable-elevation pre-stressed concrete beam; the outer ring beam is a multi-span uniform-section continuous variable-elevation reinforced concrete beam; the radial beams are single-span uniform-section horizontal reinforced concrete beams; curve pre-stressed tendons, straight-line pre-stressed tendons and regular reinforcements are arranged in the inner ring beam in a ring-shaped manner; the pre-stressed tendons and the regular reinforcements of the inner ring beam are arranged in the way that after arrangement of the regular reinforcements, the straight-line pre-stressed tendons are uniformly arranged along the periphery of the beam section at first within the range of a reinforcement cage formed by the regular reinforcements, and then the curve pre-stressed tendons are arranged between the straight-line pre-stressed tendons at the top layer; the inner ring beam and the outer ring beam are connected with a lower concrete structure through cast-in-place reinforced concrete beam-column joints; a cable-membrane structure and a spatial saddle-shaped ring beam are connected through a sliding hinged support; and the sliding hinged support realizes radial horizontal constraint release and circumferential horizontal constraint preservation.

The invention relates to an L-section steel and concrete combined structural member and belongs to the technical field of steel and concrete structures. This structural member comprises a steel member with L-shaped contour and concrete, the steel member is formed by connecting steel plates or section steel and forms a plurality of cavities, concrete is poured into part of the cavities, and other cavities receive no concrete. Load-carrying capacity and industrial level of a structure will be improved.

The invention provides a T-shaped prefabricated concrete wall connection joint, and belongs to the technical field of construction structures. The T-shaped prefabricated concrete wall connection joint comprises a first prefabricated concrete wall body and a second prefabricated concrete wall body, wherein the first prefabricated concrete wall body and the second prefabricated concrete wall body intersect to form the T-shaped connection joint, a longitudinal through hole is formed in the portion, on the joint side and close to the end face, of the first prefabricated concrete wall body, a plurality of transverse grooves are formed in the end face of the joint side of the first prefabricated concrete wall body, the thickness of the second prefabricated concrete wall body decreases in the joint area to form a plate face groove, longitudinal through holes are formed in the portions, close to the end faces and on the two sides of the plate face groove, of the second prefabricated concrete wall body, a plurality of transverse grooves are formed in the end faces of the portions, on the two sides of the plate face groove, of the second prefabricated concrete wall body, the top portion of each transverse groove extends into the portion, inside the corresponding longitudinal hole, of the corresponding wall body or intersects with the corresponding longitudinal hole, and cast-in-place concrete is arranged in the longitudinal holes, the transverse grooves and the plate face groove of the second prefabricated concrete wall body. According to the T-shaped prefabricated concrete wall connection joint, the integrality of a prefabricated overall concrete structure can be improved, and performance of the construction structure can be improved.

The invention discloses a suction disc towel rack and aims to provide a suction disc towel rack with stable structure and long service life. The suction disc towel rack is mainly characterized by comprising a towel supporting rod and a suction disc base connected to the towel supporting rod, wherein the suction disc base comprises a bracket used for fixing a through hole of the towel supporting rod and a suction disc component hinged to the bracket; a protrusion butting against the suction disc is arranged at one end, hinged to the suction disc component, of the bracket; a support bar butting against the outer surface of the suction disc component is arranged on one side of the bracket; a fixing block used for fixing the bracket is arranged at the bottom of the bracket; both the upper part and the lower part of the suction disc component slightly butt against the bracket, namely, the bracket is stably connected with the suction disc component through cooperation of the bracket protrusion, the bracket hinging end and the bracket upper support bar. The suction disc towel rack is reasonable in structure, convenient to use and excellent in effect.

The invention discloses a double-steel-column combined column foot structure and a construction method thereof. The double-steel-column combined column foot structure comprises a bottom plate, a first steel column, a second steel column and a connecting plate, wherein the first steel column and the second steel column are arranged on the bottom plate in a spaced mode, an expansion joint is formed between the first steel column and the second steel column, the connecting plate is connected to the ends, close to the bottom plate, of the first steel column and the second steel column, and the connecting plate is positioned in the expansion joint. By adopting the scheme, when the first steel column and the second steel column are subjected to bending moment or the shearing force action in the same direction, the stress of the column foot bottom plate and a column foot anchor bolt can be reduced by utilizing the rigidity superposition effect of the first steel column and the second steel column, so that the situation that the column foot bottom plate and the column foot anchor bolt are possibly broken due to stress concentration can be avoided; and when the first steel column and the second steel column are subjected to bending moment or the shearing force action in opposite directions, the connecting plate can reduce force borne by the first steel column and the second steel column, and the safety of the first steel column and the second steel column is guaranteed.