64results about How to "Act as a damper" patented technology

The invention relates to a diaphragm pump, in which a fluid moves at least one first piston (1) of a first piston / cylinder system (1, 2, 3) to and fro, wherein the first piston (1) is mechanically connected to at least one further hydraulic piston (9), and the hydraulic piston (9) drives at least one diaphragm (M1, M2) by means of a hydraulic medium.

The invention relates to a hydraulic damper with excellent tightness, which is provided with a cylinder body (4), a piston (8), a piston rod (2), a guiding sleeve(3), a front rubber cup(5), an elastic element (6), a middle rubber cup (7)or a fixing ring(7), a blanking element(12), a washer (10)and a rear rubber cup (11), wherein the periphery of the guiding sleeve(3) is provided with a clamping block (3.1), the cylinder body (4) is provided with a bayonet (4.1) matched with the clamping block (3.1), the periphery of the blanking element(12) is provided with a clamping block (12.1), and a bayonet (4.3) is arranged on the cylinder body (4), and the cylinder wall of the hydraulic damper cylinder body (4) is provided with a liquid releasing groove (4.2); the piston (8) is arranged to be a transverse I-shaped contoured structure, and comprises two piston rings(8.1 and 8.3) in the front and at the back and a piston column (8.2) in the middle; the piston column in the middle is sleeved with a floating ring (9), wherein the front piston ring wall is provided with a damping hole (8.4); and the front rubber cup (5), the middle rubber cup (7) and the rear rubber cup (11) of the hydraulic damper are arranged to be internal and external double-lip structures. The hydraulic damper has simple assembling and firm connection among the guiding sleeve and the blanking element with the cylinder wall of the cylinder body, the piston rod can position accurately, and the damping effect and the tightness are good.

The invention provides a dewatering machine which comprises an outer barrel, a motor and a dewatering barrel. The motor and the dewatering barrel are both sleeved with the outer barrel. An output shaft of the motor is fixedly connected with the bottom of the dewatering barrel through a flange. By adoption of the dewatering machine, the rotation speed can reach 2500-3000 r / min, and meanwhile, the dewatering machine is compact in structure, stable in running and low in noise.

The invention discloses a device used for simulating a foundation radiation damping effect in a vibration table test, and relates to the device used for simulating the radiation damping effect in a vibration table model test for a large-scale underground structure and a hydraulic structure. Flaky rubber sacs are arranged between the side wall inside a model box and model soil in the model box of a vibration table; the number of the rubber sacs is an even number greater than 2; the rubber sacs are respectively attached to the side surface inside the model box uniformly; the rubber sacs opposite to each other in pairs are respectively communicated with each other through flexible conduit tubes respectively; and the interior of each rubber sac is filled with sponge and water. When the model box filled with the model soil is under the action of seismic excitation in the horizontal direction, a model soil body moves reciprocally in the horizontal direction; in the moving process of the model soil, the water in the rubber sac flows in the sponge and the flexible conduit tubes; when the water flows through the sponge, volume resistance to the movement of the water is generated by the sponge to consume energy; moreover, the water in the flexible conduit tubes moves reciprocally at the speed which is several times that of the model soil so as to adsorb and consume radiation energy. The device simulates the foundation radiation damping effect very well.

The invention relates to a wheel structure and a vehicle with adjustable width and rigidity, comprising two inner wheels coaxially arranged, the inner wheels are provided with shaft holes, and the shaft holes are coaxially arranged with the inner wheels; The outer wheel is coaxially arranged, the wheel diameter of the outer wheel is larger than that of the inner wheel, and the two inner wheels are respectively arranged on both sides of the outer wheel; the inner wheel and the outer wheel are connected by a plurality of spokes, and the two ends of the spokes are respectively connected with The inner wheel and the outer wheel are hinged, and the spokes are arranged sequentially along the circumferential direction of the inner wheel. The spokes are arc-shaped plate structures, and the middle part of the spokes protrudes toward the direction away from the inner wheel; a linear telescopic mechanism is arranged between the two inner wheels , the linear telescopic mechanism can adjust the distance between the two inner wheels, and the spokes can change their own bending degree in the process of moving with the inner wheels, so as to change their own stiffness and wheel width.

The invention provides a laminar flow measurement device which can replace the measured pipe, which solves the problem that the measured pipe cannot be replaced in the existing laminar flow experiment, resulting in single measurement data and poor convincingness. The invention includes a circulating water tank, a main water delivery pipe and a return pipe. The circulating water tank is connected to the suction port of the centrifugal pump through the water diversion pipe, and the water outlet of the centrifugal pump is connected to the main water delivery pipe. The main water delivery pipe is provided with a flow regulating valve 7 and flowmeter 8, the rear end of the main water pipe and the front end of the return pipe are provided with detachable laminar flow buffer joints, the pipe to be tested is connected between the two laminar flow buffer joints, and both ends of the pipe to be tested are equipped with There are pressure measuring holes in the annular gap, and the pipe fittings under test are equipped with pressure measuring joints covering the pressure measuring holes in the annular gap at both ends respectively. The measuring pipe fittings are connected in parallel to the pressure induction pipe, the pressure induction pipe is provided with a pressure difference sensor, and the back end of the return pipe is connected with the circulating water tank.