77results about How to "Reduce repair work" patented technology

Disclosed is a resettable roll-in type swinging seismic-isolation pier stud with flanges. The resettable roll-in swinging seismic-isolation pier stud is of a resettable seismic-isolation structure. The seismic-isolation pier stud comprises a main beam, piers, bearing platforms, semi-protruding spherical pier bottoms, pier flanges, rubber spacers, hollowed semispherical bearing platform tops, shape memory alloy shear bolts and oblique-section stoppers. The fixed connection of the piers and the bearing platforms is changed into swingable hinge connection. The spherical pier bottoms of the piers are embedded in the hollowed hemispheres of the bearing platform tops. The pier flanges are arranged on two sides of the upper portions of the spherical pier bottoms and are in anchorage connection with the bearing platforms via the shape memory alloy shear bolts. The rubber spacers are arranged between the semi-protruding spherical pier bottoms and the hollowed semispherical tops and between the bearing platforms and the pier flanges as well as between the sides of the pier flanges and the bearing platform stoppers. The pier stud is separated from the foundation, and seismic energy can be filtered by swinging, so that the piers and the foundation are protected. The resettable roll-in type swinging seismic-isolation pier stud has excellent social and economic benefits and worthy of popularization and application.

The present invention relates to mechanical repair technology, and is especially fast internal thread repairing process. The fast internal thread repairing process includes the following steps: 1. reaming the thread hole with worn thread; 2. machining internal thread sleeve with internal thread fitting the available screw bolt and outer diameter fitting the reamed hole; and 3. fixing the internal thread sleeve into reamed hole in the workpiece firmly. The said repair process can repair worn internal thread quickly and avoid discard of workpiece caused by worn internal thread.

The invention discloses a manufacturing process for a lambdoidal control arm. The manufacturing process comprises the following steps of: sawing an extruded bar; heating the extruded bar; rolling and forging the extruded bar to form a blank; bending to form the blank; preforming a forged die; finally forming the forged die; and trimming the forged die. In the manufacturing process, the extruded bar is taken as a raw material; the blank is heated to 440 DEG C-480 DEG C through electric induction; the blank is rolled and forged twice by a forging roll to realize volume distribution; the processes of bending to form the blank, preforming the forged die and finally forming the forged die are carried in sequence; and the trimming process is carried out in a thermal cutting manner. Compared with the prior art, a repairing process and a secondary heating process are reduced, the processing steps for the lambdoidal control arm are simplified, production cost for the product can be lowered, production rate can be increased, and product performances can be ensured.

The invention discloses an in-pipe concrete vacuum auxiliary filling method for a large concrete-filled steel tubular structure and a filling method. The filling method comprises the following steps: preparing in-pipe concrete, grading structural pipes, placing graded filling devices, placing a vacuumizing device and checking gas tightness of the system, and grading and continuously filling in-pipe concrete under the vacuum negative pressure condition. The concrete is graded and filled, so that the influence of later filled concrete on coagulation of the filled concrete is avoided, and the mechanical property of the large concrete-filled steel tubular structure is improved, meanwhile, the requirement to the pumping capacity of the concrete pumping device is reduced; and the method and thesystem bring good economic effects. The concrete is filled continuously, so that the working period is shortened; under the negative pressure condition, the concrete is filled, thus the compactness of concrete and tightness of the concrete binding with the steel pipes are reinforced; and the quality of the steel pipe concrete structure is further improved.

The invention discloses a shape memory alloy friction composite vibration isolator which comprises an inner barrel and an outer barrel, wherein the inner barrel is connected with an upper flange, the outer barrel is connected with a lower flange, the inner barrel and the outer barrel are coaxial, and the inner barrel is connected with the outer barrel through multiple layers of austenite shape memory alloy standard wires in the axial direction. A slidable inner barrel base is arranged under the inner barrel, an axial austenite shape memory alloy spring and a plurality of sets of radial austenite shape memory alloy springs are arranged inside the slidable inner barrel base, the radial austenite shape memory alloy springs are connected with the inner barrel through a sliding friction pair, and the lower portion of the slidable inner barrel base is connected with the outer barrel through a self-adapted sliding friction pair. A slope with a small upper portion and a large lower portion is arranged on the front portion of a sliding block, and a chamfer corresponding to the slope is arranged on the outer wall of the lower portion of the inner barrel. According to the shape memory alloy friction composite vibration isolator, the austenite shape memory alloy is characterized in that deformation self-reset capacity is strong and the energy consumption of friction elements is high, the characteristics of the austenite shape memory alloy are made full use, and the purposes of multidirectional and vertical vibration control in the horizontal plane and self-reset are achieved.

The invention provides a self-resetting beam-column anti-seismic joint based a carbon fiber disc spring. The self-resetting beam-column anti-seismic joint comprises a joint beam, a joint column, a self-resetting unit and an energy consuming unit, the joint beam and the joint column are connected through a bolt, the self-resetting unit tightly abuts against the opposite outer side of the flange ofthe joint beam, is connected with the joint column and comprises a pre-tightening connecting piece and the carbon fiber disc spring, and the pre-tightening connecting piece is arranged on the joint column in a penetrating mode. The pre-tightening connecting piece is sleeved with the carbon fiber disc spring, and then the carbon fiber disc spring is clamped between the pre-tightening connecting piece and the joint column. The energy consuming unit comprises a steel angle and a high-strength bolt, the two faces of the steel angle are attached to the flanges of the joint column and the joint beamcorrespondingly and are fastened through the high-strength bolt in a penetrating mode. When an earthquake occurs, through material yielding of the steel angle, energy consuming is conducted, the carbon fiber disc spring is utilized as the joint to provide large resisting force and restoring force, and thus the joint can still conduct self-resetting after the earthquake.

The invention relates to an underground framework tunnel structure safety state evaluation and maintenance method. The underground framework tunnel structure safety state evaluation and maintenance method includes the following steps that S1, a tunnel is divided into multiple structural sections; S2, level assessment is conducted on structure component safety states of the structural sections; S3, the safety states of the structural sections are divided into multiple levels from high to low, and level assessment is conducted on the safety states of the structural sections according to classification standards; S4, the overall structure safety states are divided into multiple levels from high to low, and level assessment is conducted on the overall structure safety states according to the classification standards; S5, corresponding maintenance measures are adopted for maintenance according to level assessment results of the overall structure safety states of the tunnel. Compared with the prior art, the method describes the current state of the tunnel structure reasonably, refers to existing specifications and combines with the actual disease investigating and survey situation and has the advantages of good practicability, distinct gradation and the like.

The invention discloses a forging forming method of a triangular aluminum alloy control arm and aims at solving the problems in the prior art of low quality of a product, low material utilization ratio and low production efficiency. The forging forming method comprises the following steps: 1, blanking; 2, heating a blank: heating the blank in the first step in an electric induction heating furnace at the heating temperature of 420-480 DEG C, keeping the temperature for 5-8min to enable the blank to be uniformly heated, and finishing dynamic recrystallization after finishing forging to obtain uniform microstructures; 3, roll forgingforming: 1) calculating a roll forging pass n; 2) roll forging forming: comprising the following steps: from (1) first-pass roll forgingforming to (4) fourth-pass roll forging forming; 4, mis-shifted forming; 5, flattening forming; 6, pre-forging forming; 7, finish forging forming: carrying out finish forging forming on the basis of pre-forging forming, designing a die according to a hot forging drawing during finish forging forming, putting a pre-forging into a mold cavity of the finish forging die, and then obtaining a part in finish forging forming under the action of a press; and 8, shaping the forging.

The invention provides a detachable concrete component. The detachable concrete component comprises a concrete frame column section, a first concrete beam section, a second concrete beam section and a longitudinal bar intersection region, wherein one end of the second concrete beam section is perpendicularly connected with the concrete frame column section integrally; the other end of the second concrete beam section is spliced with a tenon type connecting joint at one end of the first concrete beam section through a mortise type connecting joint; and a plurality of first longitudinal bars arranged on the upper side and the lower side of the inside of the first concrete beam section and a plurality of second longitudinal bars arranged on the upper side and the lower side of the inside of the second concrete beam section outwards extend to the longitudinal bar intersection region and then are connected to one another. The invention further provides a constructing method and application of the detachable concrete component. The manufactured first concrete beam section can be detached and then assembled again, the amount of post-poured concrete is small, the detachable concrete component is convenient to mount and detach, the shearing force bearing capability and the repeated bending moment capability of the detachable concrete component are the same with those of an integrally cast concrete beam, and the structure is safe.

The invention relates to the field of soil pollution abatement equipment, in particular to a soil ex-situ remediation system. The soil ex-situ remediation system comprises a soil excavation device, asoil sorting device, a soil conveying device, a reagent release device and a mixing device. The five parts work together so as to achieve the purpose of soil remediation. The structural design of eachpart is reasonable, and the remediation efficiency and effect is greatly improved integrally.

The invention discloses a manufacturing method of wiring pipe holes in a composite batten wall and special manufacturing equipment. The method includes: placing the composite batten wall on the surface of the workbench of the special wiring pipe drilling equipment, and determining the drilling position, depth and aperture on the composite batten wall; moving a fastening and drilling power head to allow the same to be accurately positioned and clamped to the drilling position, using a special drill bit to drill the batten wall through rotation and feeding of the drilling power head, and returning the drilling power head when the required depth is reached; performing square small-area cutting at the end of the drilled hole, and mounting a switch or a socket box to form the complete wall wiring device. The method has the advantages composite batten wall drilling is used to manufacture the wiring pipe hole, traditional wall body slotting processes are replaced, and workload of wall face repairing after wire pipe laying is reduced greatly; the method is convenient in manufacturing, free of wall surface damage, labor saving, attractive in appearance, and the like.

The invention discloses a shear wall structure. The shear wall structure comprises a foundation and a shear wall arranged on the foundation. Two sides of the bottom, connected with the foundation, ofthe shear wall are symmetrically provided with reserved spaces, and a deformation magnification type energy dissipator is arranged in each reserved space. Each deformation magnification type energy dissipator comprises a first connection part, a second connection part and a third connection part, wherein the second connection part is provided with a middle hinge point which divides the second connection part into a power arm and a resistance arm in the length direction, the second connection part is connected with the upper end of the first connection part through the middle hinge point, the end of the power arm of the second connection part is provided with an outer buckling constraint type energy dissipation component connected with the first connection part, and the end of the resistance arm of the second connection part is provided with an inner buckling constraint type energy dissipation component connected with the third connection part. According to the shear wall structure, thedeformation of the inner energy dissipation components is magnified based on the lever principle, various types of dampers can be freely combined, the defect that the inner deformation of the shear wall is small under a horizontal load and the energy dissipation capacity of the dampers cannot be fully exerted is overcome, and the energy dissipation capacity of a failure part of the shear wall isimproved.

The invention relates to a demountable sleeve grouting connection design and construction method which comprises the following steps: providing a sleeve grouting connection design method, and selecting demountable sleeves and accessories with matched sizes according to the diameters of reinforcements; mounting pre-embedded reinforcements in a first sleeve body, connecting a second sleeve body withthe first sleeve body integrally, binding the embedded reinforcements to form a reinforcement cage, performing concrete pouring to obtain a prefabricated member, mounting to-be-connected reinforcements in the second sleeve body, pouring grouting material from a grouting hole, plugging a grout drain hole and a grouting hole after grout is drained from the grout drain hole to form sleeve grouting connection; and during dismounting, separating the sleeve grouting connection from concrete, cutting off sleeve outer reinforcements, separating the sleeves, extruding the sleeve outer reinforcements and integrally draining the sleeve outer reinforcements along with the grouting material from the sleeves, and recovering and maintaining the sleeves and the accessories. The sleeves can be used twiceor multiple times, the types and the quantities of building wastes in the dismounting process of precast concrete members are reduced, resources are saved, and the environment is protected.

The invention relates to a workpiece curved surface filling repairing method, which aims to solve the technical problems of low raw material utilization rate, poor repairing effect and high cost in the conventional repairing method. The method mainly comprises the steps as follows: determining weight and positions which need to be filled, paying solder in the positions to be repaired by a ceramic mold with a fit surface, slightly squeezing powder material with the fit surface of the ceramic mold to enable the powder material to be uniformly filled in the positions a workpiece, which need to be repaired, heating after fixing the relative positions of the mold and the workpiece to be prepared. The workpiece curved surface filling repairing method has the benefits that the utilization rate of raw material is high, and the cost is low and the surface shape of the prepared workpiece can be well controlled via the mold; after repairing, no rough edge is reserved on the workpiece, the repairing effect is good, and the method has good application prospect with respect to parts with stricter demand for size, shape and weight; the operation is convenient, and mass production is facilitated.