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A bearing testing device
This invention relates to the field of aero-engine bearing testing technology, and discloses a bearing testing device, including a main shaft, a test bearing assembly, a sealing structure, and a maintenance assembly. The test bearing assembly includes a first bearing housing and a test bearing. The first bearing housing has a first air inlet. The adjusting ring of the maintenance assembly has a first end and a second end. An oil injection ring is spaced apart from the second end to form a sealing channel. A stationary ring is connected to the oil injection ring and positioned close to the second end. The first air bleed channel of the oil injection ring communicates with the second air bleed channel, and the first air bleed channel communicates with the first air inlet. The other end of the second air bleed channel communicates with the sealing channel. This invention, through the spaced arrangement of the rotating and stationary rings and the airflow guidance of the sealing channel, introduces high-temperature gas through the first air inlet of the first bearing housing and guides it into the sealing channel, recreating a real sealing scenario. This makes the bearing test verification more comprehensive and closely resembles the actual working condition, significantly improving the reference value of the test data.
Owner:AECC HUNAN AVIATION POWERPLANT RES INST
A fuse link testing device
Owner:SHANGHAI FULLNESS ELECTRICAL CO LTD
A rotatable laterally pressurized hoop, longitudinal two-dimensional shear component and device
ActiveCN116399722BAchieve two-dimensional shearingMeet the needs of two-dimensional shearingNuclear energy generationMaterial strength using steady shearing forcesNormal loadMechanical engineering
The application discloses a rotatable lateral pressure ring and longitudinal two-dimensional shearing component and device, which comprises a test piece shearing mechanism and a lateral rotation pressure mechanism; the test piece shearing mechanism comprises a first shearing assembly and a second shearing assembly; the first shearing assembly can rotate relative to the second shearing assembly under the drive of an external different transmission mechanism; meanwhile, the first shearing assembly can also move longitudinally relative to the second shearing assembly, so as to realize ring and longitudinal two-dimensional shearing; the lateral rotation pressure mechanism takes a lower guide rail plate as a bearing and comprises a rotating mechanism and a lateral pressure mechanism; the rotating mechanism is used for supporting the lateral pressure mechanism and adjusting the pressure direction and position of the lateral pressure mechanism; the lateral pressure mechanism is arranged on the rotating mechanism and is used for applying loads with different directions and sizes to different positions of the test piece. The application can realize synchronous ring and longitudinal shearing of a circular structure surface, and can also provide a normal load through the lateral rotation pressure mechanism to simulate stress conditions under a complex service environment.
Owner:ZHENGZHOU UNIV +1
A light guide plate mounting assembly suitable for use in a display case
The utility model relates to the technical field of showcase lighting, specifically relates to a light guide plate mounting assembly suitable for showcase, including aluminium frame, limiting component, limiting component installs in one side of aluminium frame, and limiting component is used for fixed position of light guide plate, heat dissipation component, heat dissipation component installs in one side of aluminium frame, and heat dissipation component is used for heat dissipation. Compared with prior art, the application realizes automatic position limiting and firm fixing of light guide plate through the combination of limiting component and elastic compression structure, realizes the high -efficient heat dissipation of LED light source through the setting of heat dissipation component and air convection channel, prolongs light source life and guarantees the temperature stability inside showcase, and simultaneously, the installation and maintenance are simple and convenient, improve the uniformity and reliability of the overall lighting effect of showcase.
Owner:深圳明德展示科技有限公司
Novel through-wall bushing demolding tool
The utility model discloses a novel wall bushing stripping tool, including mould and the wall bushing that needs to separate in the mould, the fixed hole is opened to the mould bottom, the stripping tool includes frock frame, pulling mechanism and mould positioning mechanism, and the pulling mechanism and mould positioning mechanism are oppositely arranged on frock frame. The utility model relates to the technical field of dismounting frock, and the frock integrates the automatic hoist, the lifting rotating mechanism and the locking assembly, realizes the mechanization operation from mould positioning, locking to bushing pulling, separates, shortens single piece stripping time, and effectively promotes overall production efficiency. Through coaxial opposite setting of pulling mechanism and mould positioning mechanism, it is ensured that pulling force is stably applied along the wall bushing axis, the lateral force and impact force produced by traditional knocking, prying and other modes are avoided, the damage of the wall bushing and mould in the stripping process is effectively prevented, and the product yield and mould service life are significantly improved.
Owner:DALIAN CTC INSULATOR CO LTD