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168results about How to "Full vibration" patented technology

Active vibration absorber with flexible structure and control method thereof

The invention discloses an active vibration absorber with a flexible structure and a control method thereof. The active vibration absorber comprises a signal acquisition unit and a control vibration absorption unit; in the signal acquisition unit, the flexible structure is provided with an ICP acceleration transducer, and a signal is transmitted to a constant current source, a data acquisition device and an analog/digital converter in turn and then transmitted to a computer to be processed; and in the control vibration absorption unit, a computer control signal is transmitted to the analog/digital converter and a first power amplifier and then transmitted to an actuator to execute vibration absorption. In order to simulate external excitation, the active vibration absorber is provided with an exciting force output unit, a signal generator of the unit is connected with an input end of a second power amplifier, a signal generated by the signal generator is amplified by the second power amplifier and then input to a vibration exciter, and the vibration exciter is connected with the flexible structure through a post rod to provide external disturbance. The method mainly comprises an off-line recognition process and a real-time control process. A random walk and input estimation method is introduced into active vibration control of the flexible structure, and good control effect is acquired from an experimental angle.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Construction method of concrete pavement

The invention provides the technical field of cast-in-place concrete pavement. Templates and a foundation are fixed through ground nails, a construction concrete vibrating operation platform spans the templates of two sides of the construction concrete vibrating operation platform, manual material distribution and preliminary concrete vibrating leveling can be carried out by using the construction concrete vibrating operation platform when feeding of local pump trucks is not in place; on the basis of the cast-in-place concrete water collecting and plastering surface, surface galling treatment is carried out, and rolling and galling to concrete are conducted through a concrete pavement galling device; when template joints are treated and reinforcing mesh is manufactured and installed in concrete pavement expansion joints, reserved joint supports are installed at the joints, when the cast-in-place concrete pavement is finished, a certain strength is reached, limit support strips are removed first, then the reserved joint supports are pulled out of upwards, the reserved expansion joints are cleaning up, and after curing of the concrete pavement is finished, the concrete pavement is thoroughly cleaned up and filled with joint filling materials such as asphalt mortar; and cast-in-place concrete needs to be cured after completion, an automatic spraying film laminating machine and coiling block curing films are used for spraying water and covering the curing films on the cast-in-place concrete pavement.
Owner:倡创(上海)咨询管理事务所

Prefabricated reinforced concrete U-shaped frame beam and construction method thereof

Belonging to the field of building materials and building construction technologies, the invention relates to a prefabricated reinforced concrete U-shaped frame beam and a construction method thereof. The prefabricated reinforced concrete U-shaped frame beam comprises a base plate (11) and side plates (12), and is characterized in that the base plate (11) is internally equipped with base plate longitudinal ribs (13), the side plates (12) are internally provided with anti-torsion structure longitudinal ribs (14), stirrups (15) are disposed around the beam, the base plate longitudinal ribs (13) stretch out of two ends of the beam, and in a direction over against a beam end, the first longitudinal rib from the right is longer than the other longitudinal ribs. The U-shaped frame beam provided by the invention can well form reliable connection with concrete in a post-poured groove, the integrality is good, the die is few and simple, and the construction is convenient. The U-shaped frame beam has very good strength and rigidity, does not crack in the lifting and transportation process. The base plate longitudinal ribs (13) stretching out from two ends of the U-shaped frame beam can be welded to a connection steel frame (50) at beam-column joints, thus reinforcing the anchoring performance of steel bars and also extending the anchoring length of steel bars. The prefabricated reinforced concrete U-shaped frame beam truly realizes assembly production, and has broad application prospect.
Owner:姚芳辉 +1

Crushing system for harmless swill separation and crushing method thereof

The invention discloses a crushing system for harmless swill separation and a crushing method thereof. The system comprises a frame body, at least two crushing rollers, a crushing motor, a flushing mechanism, a statistical mechanism and a crushing controller. Wet garbage enters from the same sides of the two crushing rollers, and leaves from the same sides after being rolled. The flushing mechanism comprises a plurality of spraying heads, and the spraying heads are used for spraying cleaning water to the roller surfaces of the crushing rollers. The statistical mechanism comprises a first detection assembly, a second detection assembly and a calculation module. The first detection assembly is used for detecting the first accumulation amount of the wet garbage entering a preset rolling spacewithin a preset time period. The second detection assembly is used for detecting the second accumulation amount of the wet garbage leaving the preset rolling space within the preset time period. Thecalculation module is used for calculating the accumulation difference between the first accumulation amount and the second accumulation amount. According to the crushing system for harmless swill separation and the crushing method thereof, the treatment efficiency and the crushing speed of the wet garbage are improved, the utilization rate of cleaning resources and energy can be improved, meanwhile, the crushing motor can be protected, and the service life of the crushing motor is prolonged.
Owner:ANHUI TIANJIAN ENVIRONMENTAL PROTECTION

Pile body (or column body) concrete vibrating rod lifting device and construction method thereof

The invention provides a pile body (or column body) concrete vibrating rod lifting device and a construction method thereof. A cross beam is used for being placed at the opening position above a formwork frame; a plurality of winches and a plurality of counterweight vibrating platforms are arranged on the cross beam; the winches are connected with the counterweight vibrating platforms through lifting ropes; a plurality of vibrating motors are arranged on the counterweight vibrating platforms; the vibrating motors are connected with vibrating rods; and every two adjacent counterweight vibrating platforms are connected through a connecting rod. By using the device, manual descending for vibrating operation can be avoided, the safety risk of a conventional vibrating process is avoided, and compared with conventional manual descending for vibrating, the concrete pouring and vibrating time is shortened, and the construction efficiency is greatly improved. The vertical and full-section vibrating range of concrete can be effectively controlled by controlling the wellhead winch and changing the position of the wellhead cross beam, the construction quality of pile body or column body concrete is ensured, and the device has high popularization value in terms of safety, quality and efficacy.
Owner:CCCC SECOND HARBOR ENG

Building sand stone screening device

InactiveCN111774294ARealize flipping effectFully screenedSievingScreeningReciprocating motionGear wheel
The invention discloses a building sand stone screening device, and relates to the technical field of building construction machines. A fixing frame is included and fixedly provided with a screening groove. An incomplete gear is rotationally arranged on the fixing frame and is in driving connection with a reciprocating pushing mechanism for transmission of vertical lifting of a sieve plate. Through an arranged forward and reverse rotation mechanism, the vertical reciprocating type moving effect can be achieved on a threaded sleeve I, the threaded sleeve I achieves the purpose that a sliding block drives a vertical plate to transversely reciprocate through an arranged traction mechanism, accordingly, an overturning mechanism transversely reciprocates, the overturning effect on sand stone atdifferent positions in the screening groove is achieved, and the sieve plate is promoted to sufficiently screen sand stone. Through the arranged reciprocating pushing mechanism, a threaded sleeve IIcan be driven to vertically reciprocate, under the thread meshing action of a threaded rod, the sieve plate vertically ascends and descends in a reciprocating manner while the sieve plate rotates, sufficient rotating dispersing and vibrating of the sand stone on the sieve plate are promoted, and the sand stone screening efficiency is obviously improved.
Owner:屈洪先
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