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7results about How to "Uniform preload" patented technology
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A turning tool
The utility model relates to lathe chuck technology field, and disclose a kind of turning tool holder, a kind of turning tool holder, including tool holder body, the circumferential outside of tool holder body is evenly provided with several tool rest, tool rest is equipped with turning tool by bolt, synchronous locking device is installed in tool holder body, tool holder body is connected on lathe by synchronous locking device, synchronous locking device includes the multiple locking rods of being carried out thread connection with lathe, the center tooth ring of the synchronous transmission of multiple locking rods, center tooth ring is coaxially arranged with tool holder body, the tooth surface of center tooth ring faces outward, and is engaged with multiple locking rods evenly distributed along the outer periphery of center tooth ring, the utility model directly installs locking rod on tool holder, and realizes synchronous control by center tooth ring, so only need to screw one of locking rod, ensure that the pre-tightening force obtained by all locking rods is uniform, fundamentally solve the problem, such as insufficient rigidity of tool holder connection and precision decline, caused by bolt pre-tightening force uneven.
Owner:CHONGQING AXLER TOOLS CO LTD
Shaping and pre-tightening device and shaping and pre-tightening method for thin-wall ceramic matrix composite pipe fitting
PendingCN119526568AGuaranteed uniformityGuaranteed shape stabilityCeramic shaping coresPipe fittingInternal stress
The invention discloses a shaping and pre-tightening device and a shaping and pre-tightening method for a thin-wall ceramic-based composite material pipe fitting. The technical problems that in the CVI deposition densification process of a ceramic-based composite material, deposition stress of the thin-wall ceramic-based composite material pipe fitting is not uniform, growth internal stress is not dispersed, the bending deformation degree is large, and the straightness cannot be guaranteed are solved. The device comprises a core mold and two end part pre-tightening assemblies, the shape and the size of the core mold are designed according to the shape of the inner wall of the thin-wall ceramic matrix composite pipe fitting, threads are formed in the two ends of the core mold, and the middle of the core mold is used for supporting and shaping the thin-wall ceramic matrix composite pipe fitting; one end of each end pre-tightening assembly is used for being connected with the end of the thin-wall ceramic matrix composite pipe in a sleeving mode, the other end of each end pre-tightening assembly is connected to the end of the core mold through threads, the end pre-tightening assemblies are used for providing pre-tightening axial tensile stress for the thin-wall ceramic matrix composite pipe, and the size precision uniformity and the shape stability of the thin-wall ceramic matrix composite pipe can be effectively guaranteed.
Owner:SDIC CERAMIC MATRIX COMPOSITES RES INST (XIAN) CO LTD +1
Battery shell, battery module and battery module
ActiveCN222463104UGuaranteed stabilityensure safetyCell lids/coversElectrical batteryStructural engineering
The utility model relates to the technical field of batteries, in particular to a battery shell, a battery module and a battery module. The battery shell comprises a first shell body and a second shell body which are oppositely arranged, the first shell body comprises a first bottom plate and first side plates connected to the two opposite sides of the first bottom plate, the second shell body comprises a second bottom plate and second side plates connected to the two opposite sides of the second bottom plate, the first bottom plate and the second bottom plate are arranged in a spaced mode, and the first side plates are bent towards the second bottom plate; the second side plate is bent towards the first bottom plate; the first side plate comprises a first connecting section, a second connecting section and a transition section connected between one side of the first connecting section and one side of the second connecting section, the other side of the second connecting section is connected with the first bottom plate, and the first connecting section is located on the inner side of the second connecting section; the second side plate is welded to the outer side face of the first connecting section in an attached mode. The battery shell disclosed by the utility model can apply uniform pre-tightening force to the battery cell of the battery module.
Owner:BEIJING GUXIN ENERGY TECH CO LTD
Support device for a shafting and wind turbine generator system
The application provides a support device for a shaft system and a wind turbine generator. The shaft system comprises a first shaft, a second shaft and a bearing arranged between the first shaft and the second shaft, the first shaft is sleeved on the outer circumferential side of the second shaft and can rotate relative to the second shaft through the bearing, the support device is arranged on the first end in the axial direction of the shaft system, the support device comprises: an axle end support, at least a part of the axle end support is rotatably supported on the outer side of the axle end surface of the first end of the second shaft in the axial direction; a connecting assembly, the connecting assembly is arranged between the first end of the first shaft and the axle end support in the axial direction of the shaft system; and a pre-tightening member, the pre-tightening member is adjustably connected with the axle end support and the connecting assembly. The application can make the bearing of the shaft system not bear axial load or reduce the axial load acting on the bearing of the shaft system, and improve the service life of the bearing.
Owner:GOLDWIND SCI & TECH CO LTD
A wind turbine blade cover safety fixing device
The utility model relates to a kind of wind turbine blade cover plate safety fixing device, including fixed plate and bolt welded and fixed on fixed plate, the fixed plate is located in fan blade, the bolt is sequentially threaded through the manhole around the end of fan blade and the bolt hole corresponding one-to-one on blade cover plate after being fixed by nut, the utility model sequentially threads the bolt in fan blade through the manhole around the end of fan blade and the bolt hole corresponding one-to-one on blade cover plate after being fixed by nut on fixed plate, so that the manhole around the end of fan blade does not need to be embedded bolt also can realize the safety fixation between blade cover plate, can effectively solve the safety fixation problem of blade cover plate after embedded bolt relaxation or drop.
Owner:HUARUN NEW ENERGY (LINYI) CO LTD
Linear guide rail facilitating prepressing of rollers
ActiveCN119617002AUniform preloadreduce vibrationLinear bearingsStructural engineeringMechanical engineering
The linear guide rail comprises a guide rail body and a sliding block moving in the length direction of the guide rail body, retainers are connected to the left side and the right side of the interior of the sliding block respectively, the retainers on the two sides are matched with the sliding block to form a roller path for the rollers to rotate circularly, and the left side wall and the right side wall of the interior of the sliding block are each provided with an annular groove. The sliding block is matched with the retainer to form an outer raceway for the rollers to move, the rollers abut against each other in the outer raceway by the sliding block and the guide rail, so that when the sliding block drives the rollers to move, the rollers always keep preset pretightening force, and the pretightening force of the rollers can be accurately adjusted by accurately controlling the size of the raceway on the sliding block, the size of the rollers and the distance between guide rail slideways. It is ensured that the pin rollers always keep uniform pre-tightening force in the outer raceway, so that vibration and deviation of the sliding block in the moving process are reduced, and the precision and stability of a system are improved.
Owner:LISHUI JIEXIANG TECH CO LTD
Seat structure and vehicle
Owner:GREAT WALL MOTOR CO LTD