43results about How to "Avoid oil seepage" patented technology

A compact type redundant sealing structure is characterized by comprising a first shell (1), a second shell (2), an oil introducing pin (3), a first sealing ring (4), a second sealing ring (6) and a third sealing ring (8); the oil introducing pin (3) is arranged at the joint between the first shell (1) and the second shell (2); the side faces of the two ends of the oil introducing pin (3) are provided with a first sealing ring groove and a second sealing ring groove respectively; the first sealing ring (4) and the second sealing ring (6) are arranged in the first sealing ring groove and the second sealing ring groove respectively; the first shell (1) or the second shell (2) is further provided with a third sealing ring groove or an annular hole; the third sealing ring (8) is arranged in the third sealing ring groove or the annular hole; the third sealing ring (8) and the first sealing ring (4) form a redundant sealing structure on one side; and the third sealing ring (8) and the second sealing ring (6) form a redundant sealing structure on the other side. The compact type redundant sealing structure is compact in structure, good in reliability, and capable of achieving dual seal of the compact-structure portion and effectively preventing oil leakage which frequently appears on a single-seal structure.

The invention belongs to the field of polymeric sealants and specifically relates to a silicone sealant and a preparation method thereof. The silicone sealant is used for solving the technical problems of tool low modulus and unideal adhesive property to concrete of an existing silicone sealant. The silicone sealant is prepared from such components in parts by weight as 100 parts of hydroxyl-terminated polydimethylsiloxane, 1-150 parts of nano calcium carbonate, 1-5 parts of fumed silica, 1-12 parts of coupling agent, 8-60 parts of plasticizer, 0.1-4 parts of tackifier, 0.1-1.8 parts of mold-proof agent and 0.1-5 parts of catalyst. The invention also provides the preparation method of the silicone sealant. The silicone sealant has excellent adhesion to building materials such as concrete, is good in weather ageing resistance and good waterproof effect, and can be applied to relatively severe environments.

The invention discloses an electric driving transmission system for an electric vehicle. The electric driving transmission system comprises a driving shell, wherein an input shaft sub-assembly, an output shaft sub-assembly and a differential mechanism sub-assembly are arranged in the driving shell; the input shaft sub-assembly is matched with the output shaft sub-assembly; the output shaft sub-assembly is matched with the differential mechanism sub-assembly. The electric driving transmission system is technically characterized in that a brake mechanism sub-assembly is further arranged in the driving shell; the differential mechanism sub-assembly comprises a differential mechanism driven gear meshed with shaft teeth of an output shaft and a differential mechanism positioned in the differential mechanism driven gear; the brake mechanism sub-assembly comprises a gear-shifting arm, a parking control shaft, a gear-shifting disk with four gear grooves, a lock rod which is limited in the driving shell and is provided with a V-shaped block, a plate spring which is fixed in the driving shell and is matched with the gear-shifting disk, a pawl rotating shaft which is limited in the driving shell, and a pawl which is fixed on the pawl rotating shaft. The problems that an existing electric vehicle transmission mechanism is short in maintenance period, short in service life, low in operation stability, poor in sealing property during high rotating speed, likely to burn and the like are fundamentally solved.

The invention discloses a medical operation table, comprising a base, a lifting cylinder and a rotating cylinder, wherein the lifting cylinder is installed at the top of the base, a seat plate is installed at the top of the lifting cylinder in a rotating mode, a back plate is installed at one end of the seat plate in a rotating mode, a leg plate is installed at the other end of the seat plate in a rotating mode, and a head plate opposite to the seat plate is installed on the end face of the back plate in a rotating mode; the lifting cylinder comprises an outer cylinder at the top of the base and an inner cylinder at the top of the base, the inner cylinder is arranged inside the outer cylinder, an outer cylinder jacket capable of moving up and down sleeves the outer cylinder, the top of the outer cylinder jacket is matched with the seat plate, one end of the rotating cylinder is arranged on the side wall of the outer cylinder jacket, and the other end of the rotating cylinder is arranged at the bottom of the seat plate. The medical operation table can bear larger torque in longitudinal and horizontal directions, is firmer, and can greatly reduce the possibility of oil leak or oil seepage of a hydraulic device and greatly improve the reliability.

A compact redundant sealing structure is characterized in that it includes a first housing (1), a second housing (2), an oil pin (3), a first sealing ring (4), a second sealing ring ( 6) and the third sealing ring (8); the joint of the first casing (1) and the second casing (2) is provided with an oil passage pin (3), and the sides of the oil passage pin (3) are respectively provided with The first seal ring groove and the second seal ring groove, the first seal ring groove and the second seal ring groove are respectively provided with a first seal ring (4) and a second seal ring (6); the first housing (1) Or the second casing (2) is further provided with a third sealing ring groove or an annular hole, and a third sealing ring (8) is arranged in the third sealing ring groove or the annular hole. The third sealing ring (8), the first sealing ring (4) and the second sealing ring (6) respectively constitute a redundant sealing structure on one side. The invention has compact structure and good reliability, can realize double-channel sealing in the compact structure, and effectively avoid oil leakage often occurring in the single-channel sealing structure.

The invention discloses a vertical replaceable graded filter oil filter, comprising a filter body, the top of the filter body is threadedly connected with a sealing cover, and the inner cavity of the sealing cover is fixedly connected with a second filter The inner cavity of the sealing cover is located at the bottom of the second filter screen and filter paper is arranged, the bottom of the sealing cover is fixedly connected with a protective cover by bolts, and the surface of the protective cover is fixedly connected with the first filter screen. The present invention uses a filter body, a sealing cover, a protective cover, a sleeve rod, a limit plate, an annular spacer, a first filter element, a damping rod, a second filter element, a first filter screen, an oil inlet passage, a filter paper, and an oil outlet passage. , the second filter screen, limit spring, moving plate and vertical rod, which solves the problem that the oil filter on the existing market does not have a detachable and graded filter structure. During use, once the filter element is replaced, the overall The cost of dismantling and discarding is high, which is not conducive to the sustainable development of resources.