129results about How to "Improve local stiffness" patented technology

A vehicle having an energy-absorbing device mountable to a bumper of the vehicle is provided. The energy-absorbing device is attached to a vehicle rail having an inner rail surface and an edge surface. The energy-absorbing device defines a first crush surface interfacing with the inner rail surface. In a first embodiment, the energy-absorbing device defines a second crush surface positioned to directly interface with the edge surface of the vehicle rail in the event of an impact. The energy-absorbing device is configured to transmit load received from the impact directly to the edge surface of the vehicle rail through the second crush surface. This results in an efficient joint for the energy-absorbing device.

A damping system includes a base substrate, a constraining substrate and a non-foam damping layer between them. The base substrate has greater lateral dimensions than the constraining substrate. Consequently, the damping system is provided in a localized region of the base substrate. The damping system can be provided, for example, at a region of the base substrate where a longitudinal projection or moving linkage extends through an opening in the base substrate, such as a steering column through a dashboard panel. In this embodiment, a composite opening is provided through the damping system to accommodate the extending projection or linkage, and the damping system is effective to provide localized damping against vibrations due to the through-the-panel linkage. The damping system provides these benefits without increasing the overall thickness of the body part, and without providing damping and constraining layers across its entire lateral expanse, saving cost and weight. Methods of making such a damping system are also provided.

The invention discloses a conformal compressing tool of a wing wallboard, and belongs to the technical field of digital aircraft assembly. The conformal compressing tool comprises a conformal frame, the conformal frame comprises a supporting frame, wallboard connecting parts and a wallboard compressing part, wherein the wallboard connecting part and the wallboard compressing part are installed onthe supporting frame, the face, where the wallboard compressing part exerts pressure, of a wallboard is a curved face adaptive to the face of a pressure bearing plate of the wallboard; the two or morewallboard connecting parts are arrayed in the wallboard heading at intervals; a pushing and pressing mechanism is arranged between the wallboard compressing part and the supporting frame and used forforcing the wallboard compressing part to move relative to the supporting frame and compressing the wallboard. The conformal tool is connected with the wallboard, not only wallboard rigidity can be improved, the wallboard and a wing rib skeleton can be compressed to improve the wallboard installing efficiency and quality, and the conformal compressing tool can be widely applied to the aircraft manufacturing field.

The invention provides a lifting device for an onboard optoelectronic platform, belongs to the technical field of aviation optoelectronics, and solves the problems of unstable structure and poor rigid connectivity of the existing lifting device for the onboard optoelectronic platform. The device comprises a gear bank, a motor, a substrate, a lifting plate, four screws, four toothed belt wheels and a toothed synchronous belt, wherein the gear bank comprises a driving gear and a driven gear; the lifting plate is connected with the four screws; upper and lower ends of the four screws are connected with the substrate; the motor is installed on the substrate; the driving gear is arranged on the motor; the driven gear is connected with one of the four screws; the toothed belt wheels are connected with the upper ends of the screws; the toothed synchronous belt is wound on the four toothed belt wheels; when the motor is operated, the driven gear drives one of the four screws to rotate, then the toothed synchronous belt drives the four toothed belt wheels to rotate synchronously, and the rotation movement of the four screws is changed into up-and-down movement of the lifting plate. The lifting device disclosed by the invention is compact in structure, easy to install and stable.

The invention provides a composite material blade for a wind tunnel. The composite material blade for the wind tunnel comprises a covering skin, a front edge reinforcement area, a rear edge reinforcement area, foam core materials, a main bearing beam and a metal blade handle, wherein the metal blade handle comprises a blade portion in square frame shape and a shaft portion in long rod shape, the blade portion is stretched into a central area in the covering skin in blade shape, the front edge reinforcement area and the rear edge reinforcement area are respectively arranged at the front end and the rear end of the interior of the covering skin, the covering skin and the blade portion are filled with the foam core materials, the square main bearing beam is embedded between the covering skin and the blade portion, the thickness of the main bearing beam is varied and decreases progressively in ladder mode from one side of the shaft portion, and the width of the main bearing beam is varied and decreases progressively in ladder mode from the side of the shaft portion. The composite material blade for the wind tunnel is made of carbon fiber composite material, and thereby is light and strong. Furthermore, the foam core materials have an effective supporting function for a wing-shaped profile surface of the composite material blade for the wind tunnel, and the main bearing beam bears a majority of loads on the composite material blade for the wind tunnel.

The invention aims at providing an auxiliary frame mounting point structure. The auxiliary frame mounting point structure can realize drop in a collision process and reduce harm on a passenger in a passenger compartment. The auxiliary frame mounting point structure comprises an auxiliary frame provided with a mounting support and a longitudinal beam. The auxiliary frame mounting point structure is characterized inthat an internal screw thread sleeve with the bottom end open is fixed on the longitudinal beam; the mounting support is composed of a tubular support body with the two ends open and a cap body fixedly arranged at the top end of the support body, gaps corresponding in position are formed in the front end of the cap body and the front end of the upper part of the support body, a guide slot connected with the gaps is formed in the cap body, and the guide slot extends along the length direction of an automobile; and the auxiliary frame is fixedly connected with the longitudinal beam by utilizing a bolt which penetrates through the support body and the cap body and is screwed into the internal screw thread sleeve, and an anti-drop part with the diameter larger than the width of the guide slot is arranged at the bottom end of the bolt. The auxiliary frame mounting point structure has the advantages that the auxiliary frame can drop in the collision process and harm done to a passenger can be reduced.

A profile formed of a strip-shaped rolling stock and including at least one thickness-reduced section (16) having a thickness (D) that is smaller than the initial material thickness (W) of the rolling stock, at least one bend (17; 18), and at least one thickened region (21, 22) provided in a region of the at least one bend (17, 18) and having a material thickness (H) greater than the initial material thickness (W) of the rolling stock the profile (11) is formed of.

The invention discloses a reinforcing device for a rear body of a vehicle. The rear body of the vehicle comprises a drain channel member, wherein the drain channel member is fixedly connected with a rear shelf component, a side-frame outer panel component and a tail light base plate component of the rear body. The reinforcing device comprises a substantially L-shaped reinforcing plate, wherein the front end of the reinforcing plate is fixedly connected with both a C-pillar inner panel and a side connecting plate of a rear shelf component, which is at the front part of the reinforcing plate; the middle part of the reinforcing plate is fixedly connected with the drain channel member; the rear part of the reinforcing plate is fixedly connected with the tail light base plate component; and the rear end of the reinforcing plate is connected with a rear end panel assembly. Therefore, the rear shelf component and the rear end panel assembly are connected by the reinforcing plate to form a complete annular structure.

The invention discloses a structure for improving gutter channel modality and lateral rigidity of a shock absorber support. The structure comprises a gutter channel body and a shock absorber installing support and further comprises a reinforcing beam with a certain depth. The reinforcing beam is fixedly connected with the bottom of the gutter channel body, the shock absorber installing support comprises a mounting base body and a body reinforcing plate, the two ends of the gutter channel body each are provided with a notch, and the notch position is connected with the mounting base body. The reinforcing beam and the gutter channel body form a sealed section; a left side shock absorber installing support and a right side shock absorber installing support are connected with the sealed section formed by the gutter channel body and the reinforcing beam, the local modality of the front end of the gutter channel can be improved, vibration of the gutter channel body is reduced, and the lateral rigidity of the shock absorber support is improved. Preferably, the invention provides a vehicle body front structure comprising the gutter channel body, the shock absorber installing support and the reinforcing beam.

The invention discloses a steel-ultrahigh performance concrete combined bridge deck structure with short-steel-bar anti-shear structures and a construction method thereof. The combined bridge deck structure comprises a steel bridge deck layer (1) and an ultrahigh performance concrete layer (2) poured on the steel bridge deck layer (1). The steel bridge deck layer (1) is fixedly connected with the short-steel-bar anti-shear structures, each short-steel-bar anti-shear structure comprises a plurality of short steel bars (3) fixedly connected to the upper surface of the steel bridge deck layer (1), wherein the short steel bars (3) are horizontally arranged in the longitudinal bridge direction. The short-steel-bar anti-shear structures are wrapped in the ultrahigh performance concrete layer (2). According to the steel-ultrahigh performance concrete combined bridge deck structure with the short-steel-bar anti-shear structures, the thickness of the ultrahigh performance concrete layer can be reduced, the weight of a bridge deck can be lowered, the shear key structure is small in size and simple in construction process, and the steel-ultrahigh performance concrete combined bridge deck structure is especially suitable for large-span flexible bridges which are sensitive in bridge weight.

The invention relates to a flexible robot for abdominal cavity minimally invasive surgery, and relates to the technical field of medical equipment for abdominal cavity minimally invasive surgery. Theflexible robot comprises a driving system, a flexible robot main body and an end surgical forceps mechanism; the driving system comprises a linear feed system, a cable-driven system and a gas-driven system; the cable-driven system is connected with the linear feed system, and the flexible robot main body is arranged on the cable-driven system; the gas-driven system supplies gas to the flexible robot main body through a gas pipe passing through the cable-driven system, a front-end gripper of the end surgical forceps mechanism is arranged at the front end of the flexible robot main body, the endhand-held handle of the end surgical forceps mechanism is arranged on the cable-driven system, and a front-end gripper is connected with the end hand-held handle through a steel wire rope penetratingthe cable-driven system and the flexible robot main body. The flexible robot has the advantages of compact structure, adopts a flexible material, can realize polymorphic change and self variable stiffness effect with multi-module design, improves the spatial movement ability of the robot, and has the functions of realizing visual detection and biological tissue sampling.

A method for flattening steel strip by cold rolling the strip by passing it through at least two cold rolling mill stands each having work rolls. A first of the mill stands has work rolls having local rigidity K significantly different from a second mill stand, wherein the local rigidity K is calculated in Kgf/mm/mm accordance with an equation. Also a six high mill for flattening steel strip has an entry side where the strip enters the mill and an exit side where the strip exits the mill. The mill comprises a pair of driven backup rolls disposed on the entry side of the mill, a pair of horizontal support rolls disposed on the exit side of the mill and a pair of small diameter work rolls, the work rolls having an entry side face and an exit side face. The work rolls are disposed between the pair of backup rolls and the pair of support rolls. The entry side face of the work rolls is in engagement with the backup rolls during operation and the exit side face of the work rolls is in engagement with the support rolls during operation.

The invention discloses a cast-in-place joint structure of a UHPC beam plate with embedded reinforcing steel components. The structure comprises a pair of adjacently-arranged prefabricated UHPC beam plates and a cast-in-place UHPC joint cast in place between the pair of prefabricated UHPC beam plates, wherein the bottom of each prefabricated UHPC beam plate is fixedly provided with an embedded reinforcing steel component extending to the cast-in-place UHPC joint, and the end parts of the adjacent embedded reinforcing steel components are fixedly connected; and the side wall of the end part ofthe prefabricated UHPC beam plate is provided with a latticed groove. The invention further provides a construction method of the cast-in-place joint structure of the UHPC beam plate with the embeddedreinforcing steel components. According to the invention, through the mutual synergistic effect of the latticed grooves and the embedded reinforced steel components, the latticed grooves and the embedded reinforced steel components are mutually matched, so that the problem of weak stress of the UHPC bridge deck wet joint connection can be effectively solved, the stress performance of the new andold UHPC interfaces is remarkably improved, the interfaces cannot crack under the action of service load, and the durability and the service performance of the structure are improved.

A blow molded runner having a bottom wall and a top wall forming a double wall blow molded configuration, at least one compressed double wall structure defined by fusion an inner surface of the bottom wall to an inner surface of the top wall. At least two columns spaced apart at a distance wherein each of the at least two columns defines one of the at least one compressed double wall structure and has a top surface and the compressed double wall structure corresponding to each of the at least two columns extends from the top surface to a bottom surface of the runner at the at least two columns wherein the bottom surface is defined by an outer surface of the bottom wall. A width of the runner varies along a length thereof.

The invention relates to a vehicle cabin cutter channel assembly and a vehicle. The vehicle cabin cutter channel assembly comprises a gutter channel body. One end of the gutter channel body is provided with a cover left hinge installing plate. The other end of the gutter channel body is provided with a cover right hinge installing plate. Gaps are reserved between the cover left hinge installing plate and the gutter channel body and between the cover right hinge installing plate and the gutter channel body. A gutter channel reinforcing beam is connected with one side face of the gutter channelbody. A front air window lower beam is installed on the other side face of the gutter channel body and fixed to the gutter channel body through a front air window lower beam connecting plate. The gutter channel body is connected with a front damper installing base through welding. The gutter channel reinforcing beam is connected with a front wheel cover middle section upper reinforcing piece. Thefront wheel cover middle section upper reinforcing piece is connected with a front wheel cover middle section lower reinforcing piece through welding. The vehicle cabin cutter channel assembly has theadvantages of being high in water conductivity, capable of improving rigidity and high in stability.

The invention discloses a steel box girder reinforcing structure and method. The steel box girder reinforcing structure comprises a box girder body. The box girder body comprises transverse partitionplates arranged at intervals and groove openings running through the transverse partition plates. Arc-shaped notches are formed in the two lateral sides in each groove opening. Each arc-shaped notch has an area with fatigue cracking risks or even fatigue cracks. Reinforcing plates are arranged on the side faces of each transverse partition plate. By reinforcing the areas with fatigue cracking risks or even fatigue cracks of the transverse partition plates, the local rigidity of the arc-shaped notches of the transverse partition plates is remarkably improved, the production of the fatigue cracks can be restrained or delayed or the expansion of the cracks can be effectively restrained, and the fatigue service life is greatly prolonged. Moreover, by means of the reinforcing method, no new damage is caused to the original structure of the transverse partition plates, the structure is simple, and construction is convenient.