30results about How to "Avoid load loss" patented technology

The invention discloses a steel structure. The steel structure is characterized by comprising stand columns and beams; the stand columns comprise supporting columns and bracket structures; the supporting columns comprise supporting column pipe cavities; the bracket structures comprise sleeves which are provided with sleeve walls; the sleeve walls define sleeve cavities; first through holes penetrating through the sleeve walls are formed in the sleeve walls; the first through holes communicate with the sleeve cavities, and the sleeve walls are connected with the supporting columns; the beams comprise outer sleeves which are provided with outer sleeve walls; the outer sleeve walls define outer sleeve cavities; the outer sleeve walls are inserted into the supporting column pipe cavities from the first through holes; and the ends of the outer sleeve pipe walls are located in the supporting column pipe cavities or penetrate through the sleeves and protrude out of the sleeve walls. The structure principle of the steel structure is applied to a steel structure so as to solve the problems of beam continuity, structure fixing and node strength. The condition of beam top concrete pouring grooves is ingeniously used for welding, and the problem of steel structures is completely solved.

The invention provides a foundation pit supporting frame, and relates to the technical field of buildings. The foundation pit supporting frame comprises a foundation pit bottom plate, supporting members, a purlin beam and a drainage member; the foundation pit bottom plate is arranged at the bottom of a foundation pit; the supporting members are arranged in the foundation pit and used for supporting a rock-soil layer, the supporting members are located in the circumferential direction of the foundation pit bottom plate, the supporting members are in a cuboid shape and are provided with cavities, and the bottom ends of the supporting members are lower than the foundation pit bottom plate; the purlin beam is used for supporting the two opposite supporting members, and the purlin beam is arranged on the upper portions of the supporting members and connected to the two opposite supporting members correspondingly; and the drainage member is arranged in the rock-soil layer, at least part of the drainage member extends into the cavity, and the drainage member is used for draining water in the rock-soil layer into the cavity. The foundation pit supporting frame is reasonable in structure, good in drainage effect and capable of effectively preventing the foundation pit retaining wall from collapsing.

The invention discloses a chain link type automatic synchronous tensioning system and method for prestressed wire ropes. The chain link type automatic synchronous tensioning system comprises an anchor plate, wherein the anchor plate is fixed on a structure to be reinforced through planted bars; a plurality of main threaded rods are arranged in the anchor plate in a parallel and penetrating manner; one end of each of the main threaded rods is connected with a corresponding screw sleeve, and the other end of each of the screw sleeves is connected with a corresponding steel wire rope; after the other end of each of the main threaded rods penetrates through a corresponding opening of the anchor plate, the other end of each of the main threaded rods is fixed by a corresponding anchoring toothed nut; a tensioning bracket is arranged on one side of the anchor plate; after the main threaded rods penetrate in the tensioning bracket, each of the main threaded rods is connected with a corresponding secondary threaded rod through a corresponding connecting sleeve; after the other ends of the secondary threaded rods penetrate out of the tensioning bracket, the other ends of the secondary threaded rods are separately fixed on the tensioning bracket by corresponding tensioning toothed nuts; and the anchoring toothed nuts and the tensioning toothed nuts are separately connected with a driving mechanism. According to the chain link type automatic synchronous tensioning system disclosed by the invention, anchoring a plurality of steel wire ropes can be realized through one anchor plate, so that the reinforcing efficiency and the reinforcing effect of a conventional structure are improved; and synchronous tensioning and synchronous locking are performed on all the steel wire ropes on the anchor plate, so that the situation that the bearing capacity is reduced due to uneven distribution of the prestressing force of the steel wire ropes is avoided, and the automatic synchronous tensioning system is convenient to use, and simple and high-efficiency to mount.

The invention discloses an adjustable piezoelectric ceramic oil seal edge liquid hydrostatic bearing. The adjustable piezoelectric ceramic oil seal edge liquid hydrostatic bearing comprises a shaft, astator, a first outer check ring, a second outer check ring, a first framework seal ring, a second framework seal ring, a first inner check ring, a second inner check ring, a first piezoelectric ceramic twin lamella and a second piezoelectric ceramic twin lamella. The rotor is a rotary body. Five coaxial rotary body cavities are formed in the rotary body. Four hydrostatic support cavities are evenly distributed in the inner circumference of a third cavity circumferentially. A radial oil inlet is formed in the center of each hydrostatic support cavity. A first piezoelectric ceramic groove anda second piezoelectric ceramic groove are machined in the inner circumference of the second cavity and the inner circumference of the fourth cavity correspondingly. Oil outlets are radially formed inthe top of the inner circumference of the first cavity and the top of the inner circumference of the fifth cavity correspondingly. The first piezoelectric ceramic twin lamella and the second piezoelectric ceramic twin lamella are embedded in the first piezoelectric ceramic groove and the second piezoelectric ceramic groove correspondingly. The piezoelectric ceramic twin lamellas are adopted for adjusting the thickness of a liquid film, the problem that the bearing force of the liquid hydrostatic bearing is lowered due to heating during operation is avoided, and the system stability is maintained.