15results about How to "Prevent buckling" patented technology

The utility model relates to the field of postoperative care devices, in particular to an adjustable plastic hip joint fixing pillow which comprises a supporting mechanism, the supporting mechanism comprises a first supporting plate and a second supporting plate, and the first supporting plate and the second supporting plate are platy. The tops and the bottoms of the outer walls of the first supporting plate and the second supporting plate are fixedly connected with bearing plates, and the bearing plates are of elastic metal plate structures. Through the supporting mechanism, the distance between the two groups of bearing plates can be adjusted by adjusting the distance between the first supporting plate and the second supporting plate, so as to adapt to the distance between the legs of different patients; through the L-shaped first supporting plate, the situation that the hip joint of the patient bends by more than 90 degrees due to excessive curl-up of the patient is avoided.

The present application relates to a buckling-resistant support device and a buckling-resistant control method for a wind power tubular steel tower. The buckling-resistant support device for the wind power tubular steel tower includes: a sliding track circumferentially arranged around the inner wall of the wind power tubular steel tower; a support structure movably arranged on the sliding track, the support structure being capable of contacting the inner wall of the wind power tubular steel tower to provide support for the wind power tubular steel tower; and a control system control-connected to the support structure, the control system being capable of determining the buckling position of the wind power tubular steel tower according to the buckling data of the wind power tubular steel tower, and controlling the support structure to move along the sliding track so that the support structure abuts against the wind power tubular steel tower at the buckling position and provides support for the wind power tubular steel tower to resist buckling. It can reduce the manufacturing cost and difficulty of the wind power tubular steel tower. At the same time, it can adjust the support position of the support structure for the wind power tubular steel tower, enhance its adaptability to various load conditions, and improve the reliability of the wind power tubular steel tower.

The utility model relates to building steel structure technical field especially relates to a kind of center support frame structure that avoids hole and is easily repaired, including frame beam, frame column and center support;Two parallel frame beams and two parallel frame columns constitute square frame, one frame beam includes durable section and vulnerable section, and durable section and vulnerable section are hinged connection;The center support includes support section and avoidance section, the support section is arranged obliquely, and support section is connected with the connecting point of frame beam and frame column, the avoidance section is connected with the connecting point of diagonal frame beam and frame column, and avoidance section is installed in the vulnerable section, for avoiding the hole in square frame. Through the utility model, the problem that traditional center support oblique support section hinders door and window hole and traffic streamline and the problem that it is difficult to repair after damage are solved.

The utility model discloses a wind -proof reinforcing device for steel structure building relates to building reinforcing technical field. The utility model discloses a crossbeam, two support columns are installed to the crossbeam bottom, it further includes: support mechanism, support mechanism installs in the crossbeam bottom, and support mechanism is used for supporting crossbeam, and the protection mechanism is installed to the left side and the right side of two support columns, and the protection mechanism is used for protecting support column. The utility model discloses through setting up support mechanism, specifically is first with fixed plate no.

The application discloses a kind of hollow plate box automation multi-face welding device, it is related to automatic welding technical field, including welding table, the upper end of welding table is fixedly installed with protective cover, a plurality of evenly distributed guide posts are fixedly installed between welding table and protective cover, welding assembly is jointly installed on guide post, outer shaping assembly is fixedly installed at the center of the upper end of welding table, inner shaping assembly is fixedly installed at the center of outer shaping assembly, outer shaping assembly and inner shaping assembly are used to position the inside and outside of the side plate of hollow plate box to be welded respectively, magnetostrictive assembly for abutting against the side plate of hollow plate box from inside is slidably installed on the four sides of inner shaping assembly, the present application is positioned by external vacuum suction and internal electromagnetic tensioning, elastic retreat and thermal self-locking cooperation suppress the thermal deformation that can appear in welding process, four laser welding heads synchronous welding improve efficiency, realize the high-precision, low deformation automatic welding of hollow plate box.

The application belongs to the field of new material testing equipment, and the composite material damage residual strength testing device has a base assembly with a bottom plate, a clamping assembly arranged above the bottom plate, and a bottom of a sample to be tested clamped on the clamping assembly; a side support assembly is installed above the bottom plate and has at least two split side support plate assemblies, the sample to be tested is installed between the two split side support plate assemblies and clamped; an anti-instability assembly is installed opposite to the outside of the two side support plate assemblies and located between the two side support plate assemblies, and the two ends are connected with the two side support plate assemblies, respectively, the sample to be tested is arranged in an area enclosed by the anti-instability assembly and the side support plate assembly to prevent the sample to be tested from buckling during compression; and an upper pressing plate assembly is installed above the side support assembly to position and clamp the end surface of the sample to be tested. The device is convenient to install and operate and has a wide range of applications.

This invention discloses an improved multi-stage ultra-long gravity heat pipe, belonging to the technical field of ultra-long gravity heat pipes. The improved multi-stage ultra-long gravity heat pipe includes a heat pipe body, a support mechanism fixedly installed on the outer side of the heat pipe body, several steam pools fixedly installed on one side of the inner wall of the heat pipe body, and several two-phase flow mechanisms fixedly installed on the other side of the inner wall of the heat pipe body. A return liquid pipe extending into the two-phase flow mechanism is fixedly installed inside the heat pipe body. Each of the two-phase flow mechanisms includes a buffer pool and an overflow pipe. One side of the bottom of the buffer pool is fixedly connected to the top of the overflow pipe, and the bottom of the buffer pool has several open liquid tanks. By setting up two-phase flow mechanisms, the working fluid return is achieved by gravity, requiring no external power input. The heat transfer coefficient is higher than that of copper, and groundwater is not extracted, avoiding geological subsidence, brine scaling, water resource consumption, and the phenomenon of decreased or even failed heat transfer performance.

This invention discloses an intelligent connection device and application method for prefabricated steel structure nodes, belonging to the field of steel structure technology. It includes a main column, a crossbeam, an inner hook mechanism, an installation mechanism, and a limiting mechanism. The crossbeam is installed on one side of the outer surface of the main column; the inner hook mechanism is located on the crossbeam and connected to the main column. Through the use of the inner hook mechanism, the hook plate is horizontally inserted into the insertion hole and rotates into a "+" shape, forming a mechanical anti-dislodgement mechanism to ensure that the crossbeam will not accidentally slip off before being locked. Simultaneously, the inner spacer wraps around the end of the hook plate to prevent it from warping or twisting under stress, while distributing concentrated pressure to the column wall panel to avoid local buckling. Through the use of the limiting mechanism, the limiting support block supports the installation plate, actively controlling lateral slippage and effectively limiting the lateral slippage of the installation plate under horizontal load, maintaining the stability of the node's geometric position.

The utility model discloses a prefabricated assembly type supporting beam which comprises a first steel plate, a second steel plate and an anchor piece, a force transmission steel cylinder is connected between the first steel plate and the second steel plate, the periphery of the force transmission steel cylinder is connected with a plurality of steel plate stiffening ribs, and a bolt hole is formed in the outer edge of the first steel plate; the anchor is fixedly connected to the side, away from the first steel plate, of the second steel plate. The two prefabricated assembly type supporting beams are symmetrical, the supporting beam on one side is a cast-in-place section embedded part, the supporting beam on the other side is a prefabricated section embedded part, a cast-in-place section reinforcement cage is arranged on the periphery of an anchor part of the cast-in-place section embedded part, and the anchor part of the prefabricated section embedded part is connected with prefabricated section concrete. The bolt holes of the cast-in-place section embedded part and the bolt holes of the prefabricated section embedded part are connected through high-strength bolts. The utility model relates to the technical field of deep foundation pit construction, and the precast section and the cast-in-place section are separated, so that the precast section of the support beam can be repeatedly used, and the use amount of concrete in the foundation pit construction process is reduced.

The utility model relates to the field of LED modules, and discloses a direct insertion type elastic sheet contact LED module which comprises a shell, the top of the shell is fixedly connected with a plurality of connecting blocks, each connecting block is internally provided with a plurality of fixing assemblies, the interior of the shell is slidably connected with a top cover, the interior of the shell is provided with a circuit assembly, and the circuit assembly is connected with the top cover. A plurality of bulbs are fixedly connected to the interior of the top cover, a plurality of buckling blocks are fixedly connected to the outer wall of the top cover, a connecting groove is formed in the bottom of each buckling block, each fixing assembly comprises a fixing pin, a limiting plate and a spring, and the outer wall of each fixing pin is slidably connected to the interior of the corresponding connecting block. According to the utility model, the connecting block is firstly slid into the connecting groove, and when the connecting block enters the deepest position, the fixing pin pops up and fixes the connecting block, so that the effect of easily buckling the top cover and the shell is achieved, and the problem that the top cover and the shell can be buckled only by complex operation is avoided; therefore, the high efficiency of the direct insertion type elastic sheet contact LED module is improved.

The utility model discloses a steel beam web rectangular orifice reinforcing member in a steel structure building, which comprises a main steel, the right side of the main steel is fixedly connected with a transverse connecting steel, the front side of a transverse connecting steel web is provided with a stiffening rib plate, the top and the bottom of the stiffening rib plate are fixedly connected with a plurality of stiffening plates, and the stiffening plates are fixedly connected with the reinforcing plates. L-shaped plates are fixedly connected to the upper side, the lower side, the left end and the right end of each stiffening rib plate through bolts, the surfaces of the L-shaped plates are fixedly connected with transverse connecting steel through bolts, supporting plates are fixedly connected to the left side and the right side of each stiffening rib plate through bolts, and two opposite inclined supporting plates are fixedly connected to the opposite sides of the top stiffening plates. The main steel and the transverse connecting steel are reinforced during connection through the fixing blocks, deformation of the rectangular opening of the web transverse connecting steel can be limited through the stiffening rib plate, buckling instability under the load effect is prevented, and then the reinforcing plate and the supporting plate reinforce the reinforcing joint at the position, where the rectangular opening is formed, of the transverse connecting steel more stably.

Provided is a balloon for a balloon catheter that prevents kinking, buckling, and elongation in the long axis direction of the balloon, and that is easy to handle. A balloon for a balloon catheter (2) has a balloon main body (20) that has an expansion portion (20e), a distal side sleeve portion (25) having a fixed portion (25f) fixed to a shaft (3), and a proximal side sleeve portion (21), and has a reinforcing portion (60) on a portion of the inner surface of the distal side sleeve portion (25) on the proximal side of the distal end of the fixed portion (25f) and in the circumferential direction of the distal side sleeve portion (25), and does not have a reinforcing portion (60) on the inner surface of the proximal side sleeve portion (21).

The application discloses a high-ductility prestressed concrete reinforced structure and method, which comprises a concrete beam main body and anchor plates fixed at both ends of the concrete beam main body; the concrete beam main body is cast-in-situ concrete; a steel reinforcement cage is arranged in the concrete beam main body; the steel reinforcement cage comprises a stirrup group and a composite compression steel reinforcement cage; the composite compression steel reinforcement cage is arranged on the top of the stirrup group and fixedly connected with the stirrup group; at least one corrugated pipe is arranged in the stirrup group and fixedly connected with the stirrup group; and NPR prestressed tendons, the two ends of which extend out of the concrete beam main body, are arranged in the corrugated pipe. The application adopts the composite steel reinforcement cage as the compression zone steel reinforcement, overcomes the damage mode of the compression zone concrete crushing of the NPR steel reinforced concrete structure, adopts the NPR prestressed tendons to improve the tensile performance of the prestressed tendons in the steel reinforced concrete structure, improves the ductility of the structure, and further improves the high ductility of the concrete structure.

The utility model discloses a combined steel plate shear wall with a negative Poisson's ratio structure, and belongs to the technical field of fabricated building structures. Comprising two outer side steel plates, the two outer side steel plates are arranged in parallel, a plurality of pieces of C-shaped steel are vertically arranged between the two outer side steel plates at equal intervals, foam concrete is poured in a gap between the two outer side steel plates, and edge components are arranged on the peripheries of the two outer side steel plates. By arranging the outer side steel plates with the negative Poisson's ratio structure, the anti-seismic and anti-knock performance of the combined steel plate shear wall plate is improved, light concrete is adopted, the self weight is reduced, and the two sides of the combined steel plate shear wall plate are connected with the frame beams, so that the adverse effect of a pull belt on the frame columns can be effectively eliminated.