12results about How to "Avoid deformation failure" patented technology

The utility model relates to a kind of fireproof bridge temperature regulation telescopic device, it includes telescopic joint subassembly and cover plate subassembly constitute, telescopic joint subassembly contains symmetrically set in the telescopic section of middle section both sides, two sliding fit, telescopic section top wall's limiting bolt is embedded in the waist type slot of middle section, realize sliding guide and stroke control, cover plate subassembly includes fixed cover plate, movable cover plate and piano key telescopic sealing cover, fixed cover plate is fixedly connected telescopic section, movable cover plate buckling middle section, three are through piano key telescopic sealing cover telescopic cooperation, and device uses double fireproof structure of outer spraying fireproof coating and inner pasting nonmetal fireproof lining, when working, device can adapt to bridge thermal expansion and contraction, length is adjusted by telescopic joint subassembly, piano key telescopic sealing cover guarantees airtightness, have telescopic adjustment and long-term airtightness, fireproof performance is stable, structure is stable and installation maintenance is convenient.

The utility model discloses a handheld part and pruning machine, wherein the handheld part comprises a main machine, a main handle and a battery pack, the main handle is detachably installed at the rear end of the main machine, and the battery pack is detachably installed at the main handle. The utility model changes the inseparable installation mode of the main handle with relatively large space occupation on the handheld part and the main machine in the traditional structure, the main handle is designed to be detachably installed on the main machine, so that the main handle is removed during packaging and transportation, thereby effectively reducing the size of the handheld part, laying a foundation for optimizing the packaging size of the pruning machine, thereby saving the transportation cost. In addition, the battery pack is detachably installed on the main handle, which can ensure the continuous operation of the main machine by replacing the battery pack, and further saves the packaging space. The battery pack is disassembled and packaged, making the transportation and packaging design more flexible.

The valve comprises a valve body, a valve element and a driving assembly, a sealing cavity is formed in the valve body, an opening is formed in one end of the sealing cavity, an inner sealing face is arranged in the sealing cavity, the valve element is connected into the sealing cavity in a rotating mode, an outer sealing face is arranged on the valve element, a liquid inlet and a first liquid outlet are formed in the valve body, and a liquid passing channel is formed in the valve element. The liquid passing channel can be communicated with the liquid inlet, the liquid passing channel is provided with a containing groove, an annular sealing piece is arranged in the containing groove, a switching hole is formed in the annular sealing piece, and a contact sealing face is arranged on the annular sealing piece; the containing groove is formed in the other end of the liquid passing channel of the valve element, the annular sealing piece made of the material with the low friction coefficient is arranged in the containing groove, and the contact sealing face of the annular sealing piece and the inner sealing face of the valve element are in sealing and sliding fit, so that friction between the valve element and the valve body can be reduced, and durability is improved; the containing groove can maintain the overall shape of the annular sealing piece, and the annular sealing piece is prevented from deforming and losing efficacy due to pressure.

The invention relates to the technical field of frequency conversion cabinet protection, and provides a frequency conversion cabinet with a multi-layer supporting mechanism, which comprises a base, a protection frame is fixedly mounted at the top of the base, damping rods I are hinged to four corners of the inner wall of the protection frame, and a frequency conversion cabinet body is hinged to the inner wall of the protection frame through the damping rods I; a top plate is fixedly mounted at the top of the protection frame, and a transfer plate is hinged to the bottom of the top plate. According to the device, through redesign, the protection structure is greatly simplified, meanwhile, the situation that the device bears pressure from the horizontal direction, and consequently materials are pressed, deform and lose efficacy is avoided, and in order to achieve the purpose, a multi-layer supporting structure is readjusted through the device, specifically, according to the device, a lever with a transfer plate as a force arm is adopted; therefore, the stone breaking pressure borne by the outer protection plate is reduced to the maximum extent and then acts on the second damping rod, the pressure borne by the second damping rod is reduced, and the horizontal pressure of the second damping rod and the transmission plate on the base and the protection frame is reduced.

The groove-adjustable supporting device comprises seat bodies, a connecting mother rod and two adjusting supporting rods, the seat bodies are arranged at intervals, spherical mounting holes are formed in the seat bodies, one ends of the adjusting supporting rods are provided with spherical hinge seats which are arranged in the spherical mounting holes, and the spherical hinge seats are connected with the connecting mother rod. And the other end of the adjusting support rod is connected with the other adjusting support rod through a connecting mother rod. According to the groove-adjustable supporting device, the design that the spherical hinge seat is arranged in the groove-adjustable supporting device, the connecting nut and the adjusting supporting rod are combined is adopted, the groove with the uneven surface can be used for supporting, and the groove-adjustable supporting device can rotate freely to adapt to the perpendicularity of the surface of a crown beam or an enclosing purlin; the connecting mother rod and the adjusting supporting rod are stressed in a balanced and axial mode, and the supporting device is prevented from sliding or deforming and losing efficacy.

The utility model provides a kind of external hexagonal bolt of anti-loosening, including stud, screw head, nut, inner inflation hole, internal thread, inner inflation head and deformation groove, the stud and screw head are integrally set together, the stud is threadedly installed with nut, one end is provided with inner inflation hole, internal thread and deformation groove, the inner inflation head is threadedly connected with the internal thread of stud setting;The utility model improves strength by solid stud (no through hole);Circular array deformation groove cooperates conical inner inflation head, evenly expands to form stable interference when screwing, and the anti-loosening is superior to traditional;Inner inflation head integrally designed, screw rod is directly connected with internal thread, and installation is simple, stress is uniform.

The application relates to a low-temperature vacuumizing device and method for a vacuum cup with a temperature control component, wherein the device is provided with a vacuumizing box body; the vacuumizing box body is internally provided with a first heating module, a fixing tool for fixing and placing the vacuum cup with the temperature control component, and a second heating module for heating the sealing position of the bottom of the vacuum cup; the fixing tool comprises a support; the support is provided with a mounting station for fixing and placing the vacuum cup; the support is further provided with a temperature control plate; the temperature control plate is internally provided with a heat exchange channel for the flow of a heat exchange medium; the temperature control plate is provided with a penetrating hole through which the bottom of the vacuum cup can pass and form heat transfer contact with the vacuum cup; when the vacuum cup is placed on the mounting station, the temperature control component on the vacuum cup is not located between the bottom of the vacuum cup and the temperature control plate; and the temperature control device in communication with the heat exchange channel is further included. The application can meet the vacuumizing of the vacuum cup and effectively prevent the deformation and failure of the temperature control component on the vacuum cup.

This utility model discloses a planar linear bearing, including a base, rollers, and an end cap. The base has a groove, and the rollers are disposed within the groove. The groove includes a first groove, a second groove, and a transition groove. The second groove is deeper than the first groove. The first and second grooves are smoothly connected via the transition groove to form a loop. An exposure window is provided on the first groove. The end cap covers the base, shielding the groove. The end cap includes a support portion and a connecting portion. The support portion is positioned corresponding to the first groove, and the connecting portion is positioned corresponding to the second groove. The connecting portion is higher than the support portion, and the connecting portion and the support portion are connected by a transition slope. The base also has a positioning component for positioning the end cap. Its structure is simple, increases bearing load, ensures structural strength, and possesses good toughness, thus improving structural performance.

The invention belongs to the technical field of blast furnace hot blast stove safety control, and particularly relates to a blast furnace hot blast stove safety optimization method based on multi-valve cooperation, which comprises the following steps: (1) safety optimization of a gas combustion valve: 1, double valves are closed in place for interlocking protection; 2, the temperature between the valves is monitored in real time; and 3, key valve signal interlocking upgrading. (2) safety optimization and opening in-place signal dual detection of the hot blast valve; (3) safety optimization of the cold air valve and a cold air valve opening in-place signal dual verification structure; (4) multi-valve cooperative interlocking logic upgrading; and (5) test and verification: 1, signal distortion simulation test; 2, temperature alarm test; and 3, carrying out a delay verification test. According to the method, by means of double-signal series verification, temperature threshold alarm setting, delay verification and multi-link interlocking protection, misoperation caused by signal distortion is completely eradicated, immediate response is achieved, blast furnace wind interruption and slag pouring caused by false in-place opening signals are prevented, normal production is ensured, and economic losses are avoided.

This utility model discloses a concealed microphone with a protective structure, belonging to the technical field of audio acquisition equipment, aiming to solve the problems of insufficient protection and inconvenient installation and maintenance of existing concealed microphones. It includes a microphone body with a head and a threaded shell. A first fixing plate with an annular mounting groove, a limiting groove, and a rotating plate is provided between the head and the shell. A thickened nut is fitted onto the shell. A protective assembly including multiple sleeve-type multi-section telescopic rods, springs, and magnets is installed between the two. One end of the telescopic rod is connected to the rotating plate, and the other end is magnetically attracted to the nut via a magnet. An internal spring assists in its extension and retraction. The length of the telescopic rod can be adjusted by rotating the nut. The storage annular groove and the mounting groove are compatible, achieving all-round buffer protection, balancing installation concealment and maintenance convenience, ensuring microphone structure and sound pickup stability, and is suitable for scenarios requiring concealed audio acquisition.

The utility model discloses a fireproof sealing device for a compression door of a delivery window. The fireproof sealing device comprises a circle of front sealing groove formed along the inner wall of a front delivery window, a circle of rear sealing groove formed along the inner wall of a rear delivery window, a front fireproof sealing gasket matched with the front sealing groove in shape and a rear fireproof sealing gasket matched with the rear sealing groove in shape. The front fireproof sealing gasket and the rear fireproof sealing gasket each comprise an m-shaped soft sealing gasket body and a rectangular soft sealing gasket body, the bottoms of the m-shaped soft sealing gasket bodies are fixed to the tops of the rectangular soft sealing gasket bodies, hard fireproof inner cores are plugged in the rectangular soft sealing gasket bodies, the front fireproof sealing gasket is embedded in the front sealing groove, and the rear fireproof sealing gasket is embedded in the rear sealing groove. The m-shaped soft sealing gasket body is attached to the front pressing door, the rectangular soft sealing gasket body of the front fireproof sealing gasket is attached to the inner bottom of the front sealing groove, the rear fireproof sealing gasket is embedded in the rear sealing groove, the m-shaped soft sealing gasket body is attached to the rear pressing door, and the rectangular soft sealing gasket body of the rear fireproof sealing gasket is attached to the inner bottom of the rear sealing groove.

This invention relates to the field of cementing equipment technology in oil extraction, specifically a casing centralizer for oil extraction cementing. It includes two identical centralizer mounting bases, a first centralizer mounting base and a second centralizer mounting base. Multiple inner constraint spring plates are distributed between the two bases and combined to form a cylindrical frame. Outer main spring plates are correspondingly located on the outer sides of the inner constraint spring plates. The centralizer also includes a curvature adjustment mechanism and wellbore inner diameter detection and control equipment. The curvature adjustment mechanism drives a sliding column via a hydraulic system, pulling a curvature adjustment rope to adjust the distance between the outer main spring plates and the inner constraint spring plates. This centralizer can dynamically adapt to the outer diameter according to the wellbore inner diameter, providing precise and stable adjustment. It reduces downhole movement friction and component wear, ensuring the casing remains centered, effectively improving cementing construction quality and equipment operational reliability, and adapting to complex and harsh downhole conditions.