33results about How to "Little effect on stiffness" patented technology

The invention discloses a wall board installing connecting piece and a wall board installing method thereof. The wall board installing connecting piece comprises a connecting piece body A and a connecting piece body B, wherein the connecting piece body A is inverted T-shaped steel, the connecting piece body B is angle steel, a lower-portion body is connected with an inner side flange of the connecting piece body A through a body embedding piece A, an upper-portion body is connected with one side of the connecting piece body B through a body embedding piece B, the upper-portion side wall of a wall board is connected with the other side of the connecting piece body B through a wall embedding piece B, the lower-portion side wall of the wall board is connected with a web plate of the connecting piece body A through a wall embedding piece A, and the bottom of the wall board is arranged on the outer side flange of the connecting piece body A. Multiple functions of wall board connection, temporary supporting, elevation positioning and flatness adjustment are integrated through the connecting piece body A. During installation, connection and installation of the wall board and a body structure can be quickly achieved only by respectively aligning the wall embedding piece A and the wall embedding piece B to the connecting piece body A and the connecting piece body B, and further the purpose of improving installing efficiency and construction quality is achieved. The connecting mechanical property of the wall board is excellent.

The invention relates to an inter-pass electromagnetic induction heating roll bending method and an inter-pass electromagnetic induction heating roll bending device, which belong to the field of roll bending technology and equipment, and are used for solving the problem that some difficult-to-cut materials are not easy in roll bending. The inter-pass electromagnetic induction heating roll bending method is characterized in that metal profiles between two adjacent roll bending passes are inductively heated in protective atmosphere, the heating temperature of the profiles is detected by a temperature sensor, the power of an induction control coil is fed back, the profiles heated to a preset temperature are bent by a roll, and the bent profiles are cooled by a cooling device. The metal profiles are heated, bent and cooled in the protective atmosphere, and the profiles discharged out of a gas shielding cover are cut and stacked according to the set length. The metal profiles after induction heating treatment are fine in formability and excellent in mechanical performance.

The invention discloses a hub type energy-saving vibration-reducing pneumatic power generating device, comprising a hub, at least two compressed air bags and a pneumatic generator, wherein the periphery of the hub is connected with an annular air collector, the compressed air bags are uniformly distributed at the periphery of the air collector, and are isolated from each other, the compressed air bags are communicated with the air collector through valves, the outer sides of the compressed air bags are provided with air inlet valves, the radial direction of the hub is provided with the pneumatic generator, and the pneumatic generator is communicated with the air collector through air hole connecting parts. The invention aims to provide the energy-saving hub vibration-reducing pneumatic power generating device, which is used for converting vibration in vehicle movement and partial energy generated by self weight, electric energy generated through the power generating device is charged into a storage battery of the vehicle, so that the service life of the storage battery is prolonged, and the working time of electric car series is greatly prolonged. The hub type energy-saving vibration-reducing pneumatic power generating device is simple and reliable in structure and has a small influence on the rigidity of the hub.

The plate shape and thickness-controlling rolling method is to use "move work roll" roller mill, where the gap is changed to regulate the plate shape and thickness via transversely shifting and symmetrizing crossed work rolls. The roller mill includes frame, hold down mechanism, upper support roll mechanism, upper work roll mechanism, lower support roll mechanism, lower work roll mechanism, and cross shift mechanism comprising waist block and shift cylinder. The cross shift mechanism is used to replace available expensive automatic thickness controller and results in simple roller mill structure, low cost, low pressure for plate shape and thickness control and raised control precision. In addition, using the hold down cylinder, the waist block and the shift cylinder can realize gap-less rolling.

The invention discloses a building continuous-collapse-resistant reinforcing system based on FRP cloth materials. The reinforcing system comprises two first anchoring steel plates symmetrically arranged at two side surfaces of a to-be-reinforced column, two second anchoring steel plates symmetrically arranged at the other two side surfaces of the to-be-reinforced column, and the FRP cloth materials pasted on the surface of a to-be-reinforced beam, the two first anchoring steel plates are both provided with first anchor clamping piece grooves, the two second anchoring steel plates are both provided with second anchor clamping piece grooves, the adjacent first anchoring steel plates and the second anchoring steel plates are fixedly connected via bolts, one end of each piece of the FRP cloth materials are fixedly connected with anchor clamping pieces, and the anchor clamping pieces are fixedly connected in the first anchor clamping piece grooves or the second anchor clamping piece grooves. The invention also discloses a building continuous-collapse-resistant reinforcing method based on the FPR cloth materials. According to the reinforcing system and the method, the construction is convenient, the carrying capacity and the ductility of the original to-be-reinforced beam and the to-be-reinforced column are improved, to-be-reinforced buildings are not damaged, and the integrity and the continuous-collapse-resistant ability of the buildings are improved.

The invention discloses a constant flow static pressure working table for a gear shaping machine or a gear milling machine. By constant flow static pressure technology, a static pressure cavity is formed on a central spindle, and lubricating oil is fed into the static pressure cavity by a constant pressure oil pump, so that an oil film is formed between the spindle of the working table and a pedestal to keep contact surfaces between the spindle and the pedestal in a constant pressure full-liquid lubricating state; therefore, the center of the working table is positioned well, a wear phenomenon is almost avoided during movement, and the rigidity and the accuracy of the working table are greatly improved and the life of the working table is greatly prolonged; and the pedestal is provided with a dual lead worm, and adjusting pads are arranged in both axial direction and radial direction of the worm, so the working table can work under a smaller backlash condition, and the dividing accuracy of a rotary working table can be improved.

The invention relates to a double-nut ball screw pair pre-tightening force adjusting and measuring device and a linear feeding system. The double-nut ball screw pair pre-tightening force adjusting and measuring device comprises a main screw nut, a nut sleeve, a locking nut, a pre-tightening nut, a thrust bearing, a front disc spring fixing plate, a first disc spring, a second disc spring, a rear disc spring fixing plate, an annular pressure sensor, a sensor fixing plate, an auxiliary screw nut, an auxiliary nut connecting plate and a worktable connecting plate; one end of the nut sleeve is in fastened connection with the main screw nut; the locking nut and the pre-tightening nut are connected to the nut sleeve by threads; the thrust bearing clings to the pre-tightening nut; the front disc spring fixing plate clings to the thrust bearing; the excircle side of the first disc spring clings to the front disc spring fixing plate; the inner hole of the second disc spring clings to the inner hole of the first disc spring; the rear disc spring fixing plate clings to the excircle side of the second disc spring; and the annular pressure sensor clings to the rear disc spring fixing plate, the sensor fixing plate clings to the annular pressure sensor, and the other side of the sensor fixing plate is in fastened connection with the auxiliary screw nut.

The invention discloses an oil cylinder of a static pressure vibration exciter, which is characterized in that the two ends of a piston are respectively fixedly connected with a piston rod, and each piston rod stretch out of an inner cavity of a cylinder barrel; the transverse section of a static-pressure bearing is in the shape of a circular ring, the outer wall of each static-pressure bearing is axially provided with annular external oil grooves at certain intervals, the inner wall of the static-pressure bearing is axially provided with annular internal oil grooves, and each annular external oil groove is correspondingly communicated with an annular external oil groove by a first through hole; an end cover is axially provided with a second through hole; the piston rods respectively correspondingly pass through a static pressure bearing, and the static pressure bearings are respectively fixedly connected with an end cover, the two ends of the cylinder barrel are respectively arrangedin a big hole of the second through hole of a corresponding end cover, and the two end covers are fixedly connected by lock bolts; and the shell of each end cover is provided with an oil inlet and a corresponding oil outlet, one of two adjacent annular external oil grooves is communicated with the corresponding oil inlet, and the other annular external oil groove is communicated with the corresponding oil outlet. The oil cylinder disclosed by the invention can resist large lateral forces, and reduce the friction between the piston and the static-pressure bearings.

The invention discloses a positioning grid for nuclear fuel assemblies, which comprises an outer strip, the upper end of the outer strip is provided with a guide wing, and a through hole arranged at the upper end of the outer strip, and the through hole runs through the The inside and outside of the outer strap. The spacer grid can effectively alleviate the hydraulic force borne by the outer strips to reduce the deformation of the outer strips, thereby achieving the effect of reducing the risk of the spacer grid being hooked.