Background technique
The torsional vibration of transmission system is extensively present in industrial production and vehicle traveling process, such as in plate sheet and strip process because of the torsional vibration of the main transmission that causes in the situations such as acceleration and deceleration, gear engagement, transmitting torque fluctuates, make transmission unstability, torsional vibration and milling train vertical vibration intercouple, thereby affect the quality of Strip product, improve Strip quality and just must suppress the torsional vibration of main transmission; In vehicle traveling process, the torsional vibration meeting of transmission system produces noise, the travelling comfort that impact is taken, and torsional vibration meeting affects the life-span of the parts such as transmission shaft, accelerates the replacement cycle, can cause the fracture of transmission shaft when serious, brings economic loss.Therefore the torsional vibration that suppresses transmission system is extremely necessary.
At present, for fear of resonance, relax the suffered impulsive load of transmission system, improve the life-span of part, conventionally the inhibition of transmission system torsional vibration is mainly adopted to spring torsional vibration damper or mass flywheel formula torsional vibration damper, these torsional vibration dampers can effectively suppress torsional vibration, but also all there is shortcoming separately, and can not to inhibition degree, make a change according to actual vibration situation, therefore versatility is poor, each transmission system needs to manufacture the torsional vibration damper matching, and just can reach good inhibition, causes economic loss.
Summary of the invention
The present invention completes in order to solve deficiency of the prior art, and its object is to provide hydraulic variable damping torsional vibration damper between a kind of two rotary components, can inhibition degree be made a change according to actual vibration situation, improves torsional vibration inhibition.
The technological scheme that technical solution problem of the present invention is taked is:
The present invention includes flange plate, torsion damping parts and end cap, flange plate and end cap lay respectively at the both sides of torsion damping parts and are attached thereto by screw, and rotatable parts form a whole; Described torsion damping parts comprise shaft coupling cylinder, connecting rod, piston push rod, oil hydraulic cylinder and adjusting screw; Shaft coupling cylinder is connected with an active rotation axle, active rotation axle drives the rotation of shaft coupling cylinder and drives piston push rod to rotate by connecting rod, piston push rod compresses shock-absorbing spring on the one hand, squeezed fluid force feed on the other hand, make hydraulic oil pass through the oil duct of piston rod inside, flow to another oil hydraulic cylinder, the adjusting screw that can regulate hydraulic fluid flow rate is housed on piston push rod, thereby realize the function of hydraulic variable damping torsion damping.
Furtherly, described torsion damping parts have two oil hydraulic cylinders at least, described oil hydraulic cylinder is arc oil hydraulic cylinder, respectively there is an arc oil pocket at each arc oil hydraulic cylinder two ends, two oil pockets are not communicated with, centre is separated by entity, and the flange that arc oil hydraulic cylinder stretches out by the right and left is fixedly connected with toroidal shell with bolt.
Furtherly, described piston push rod is arc push rod, in the middle of arc push rod, is provided with arc oil duct, and arc push rod two ends are connected to two adjacent oil pockets by piston, and the hydraulic oil in two oil pockets circulates mutually by oil duct.
Furtherly, described hydraulic cylinder is fixedly connected with oil hydraulic cylinder by screw, prevents the extraction of piston and causes the leakage of hydraulic oil, and one end of hydraulic cylinder contacts with shock-absorbing spring, plays the effect of spring seat.
Furtherly, described shock-absorbing spring is through on piston push rod, and two ends are pressed against respectively on the hydraulic cylinder on both sides of piston push rod, play auxiliary damping effect, and when stable rotation, bear the effect of moment of rotation.
Furtherly, described oil-feed screw is connected with oil pocket after running through toroidal shell, oil hydraulic cylinder.
Furtherly, described oil-draining screw is connected with oil pocket after running through toroidal shell, oil hydraulic cylinder.
Beneficial effect of the present invention: the present invention has not only taken into account the advantage of traditional torsional vibration damper but also made up its deficiency, simple in structure, be convenient to dismounting and maintenance, can to inhibition degree, make a change according to actual vibration situation, improve torsional vibration inhibition, realize the function of hydraulic variable damping torsion damping.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, hydraulic variable damping torsional vibration damper of the present invention, comprises flange plate 1, torsion damping parts and end cap 3, and flange plate 1 lays respectively at the both sides of toroidal shell 2 and is attached thereto by set screw 14 with end cap 3, and rotatable parts form a whole.
As shown in Figure 2, flange plate 1 is connected with toroidal shell 2 on the one hand, passes through spline joint on the one hand with driven running shaft, and moment of torsion is passed to driven running shaft from torsion damping parts.
As shown in Figure 3, described torsion damping parts are comprised of toroidal shell 2, oil hydraulic cylinder 10, seal ring 16, piston push rod 7, hydraulic cylinder 8, shock-absorbing spring 6, connecting rod 5, shaft coupling cylinder 4, oil-feed screw 13, oil-draining screw 12, adjusting screw 15, connecting bolt 11 and set screw 9.
As shown in Fig. 3 or 4, described oil hydraulic cylinder 10 is arc oil hydraulic cylinder, and respectively there is an arc oil pocket at each arc oil hydraulic cylinder 10 two ends, and two oil pockets are not communicated with, centre is separated by entity, and the flange that arc oil hydraulic cylinder stretches out by the right and left is fixedly connected with toroidal shell 2 with connecting bolt 11.Described torsion damping parts have the arc oil hydraulic cylinder 10 described in two, and each oil hydraulic cylinder 10 has two mutual disconnected oil pockets.
As shown in Fig. 3 or 4, described piston push rod 7 is arc push rod, in the middle of arc push rod 7, be provided with arc oil duct, arc push rod 7 two ends are connected to two two oil pockets that oil hydraulic cylinder 10 is adjacent by piston, hydraulic oil in two oil pockets can circulate mutually by oil duct, arc push rod 7 is provided with adjusting screw 15, and turn adjusting screw 15 is the flow of hydraulic oil in adjustable oil duct, thereby changes the size of hydraulic damping.
As shown in Fig. 3 or 4, described hydraulic cylinder 8 is fixedly connected with oil hydraulic cylinder 10 by set screw 9, can prevent the extraction of piston and cause the leakage of hydraulic oil, and one end of hydraulic cylinder 8 contacts with shock-absorbing spring 6, plays the effect of spring seat.
As shown in Fig. 3 or 4, described shock-absorbing spring 6 is through on piston push rod 7, and two ends are pressed against respectively on the hydraulic cylinder 8 on both sides of piston push rod 7, play auxiliary damping effect, and when stable rotation, bear the effect of moment of rotation.
As shown in Fig. 3 or 4, described shaft coupling cylinder 4 is for connecting active rotation axle, and is connected with piston push rod 7 by connecting rod 5, the rotation that rotarily drives shaft coupling cylinder 4 of active rotation axle, and pass through the rotation of connecting rod 5 drive piston push rods 7.
As shown in Fig. 3 or 4, described oil-feed screw 13 runs through toroidal shell 2 and oil hydraulic cylinder 10, is connected with oil pocket, rotates shaft coupling cylinder 4, makes oil suction chamber reach maximum, screws out oil-feed screw 13, can be by oil inlet hole to oil hydraulic cylinder oil pocket injection liquid force feed.
As shown in Fig. 3 or 4, described oil-draining screw 12 runs through toroidal shell 2 and oil hydraulic cylinder 10, is connected with oil pocket, screws out oil-draining screw 12, rotates shaft coupling cylinder 4, can discharge the hydraulic oil in oil hydraulic cylinder oil pocket by drain oil.
In conjunction with Fig. 1-4, a specific embodiment of the present invention is:
Shaft coupling cylinder 4 is connected with active rotation axle, and flange plate 1 is connected with driven running shaft, and moment of torsion passes to driven running shaft from active rotation axle by hydraulic variable damping torsional vibration damper.Active rotation axle drives shaft coupling cylinder 4 to rotate and passes through connecting rod 5 and drives piston push rod 7 rotations, piston push rod 7 compresses shock-absorbing spring 6 on the one hand, squeezed fluid force feed on the other hand, make hydraulic oil pass through the oil duct of piston push rod 7 inside, flow to another oil hydraulic cylinder, adjusting screw 15 is housed on piston push rod 7, can regulates hydraulic fluid flow rate, thereby realize the function of hydraulic variable damping torsion damping.When adjusting screw 15 screws in completely, oil in two oil hydraulic cylinders 10 can not circulate by oil duct, now only there is shock-absorbing spring 6 to play torsion damping effect, when adjusting screw 15 screws out gradually, oil in oil hydraulic cylinder 10 can circulate by oil duct, shock-absorbing spring 6 and hydraulic oil all can play torsion damping effect, and the screw-in of adjusting screw 15 screws out damping size that can regulator solution force feed, thereby can change effectiveness in vibration suppression according to actual vibration situation.Oil hydraulic cylinder 10 is connected with toroidal shell 2 use connecting bolts 11, under the effect of shock-absorbing spring 6 and hydraulic damping, drive toroidal shell 2 rotations, toroidal shell 2 is connected with flange plate 1, end cap 3 use set screws 14, thereby toroidal shell 2 drives flange plate 1 rotation, flange plate 1 and then drive driven shaft are rotated.
During assembling, first shock-absorbing spring 6, hydraulic cylinder 8 are set on piston push rod 7, then piston push rod 7 is pushed in oil hydraulic cylinder 10, again oil hydraulic cylinder 10 and the flange of toroidal shell 2 by oil hydraulic cylinder 10 both sides are coupled together with connecting bolt 11, finally rotate the oil hydraulic cylinder oil pocket that shaft coupling cylinder 4 makes oil-feed screw 13 those sides and reach maximum, injection liquid force feed, screws oil-feed bolt 13.During dismounting, first rotate the oil hydraulic cylinder oil pocket that shaft coupling cylinder 4 makes oil discharge screw 12 those sides and reach maximum, then adjusting screw 15 is screwed into minimum, oil duct is not circulated, screw out oil discharge screw 12, reversion shaft coupling cylinder 4, gets rid of hydraulic oil again, the connecting bolt 11 of finally dismantling between oil hydraulic cylinder 10 and toroidal shell 2, takes out oil hydraulic cylinder 10.
One skilled in the art will understand that the embodiments of the invention shown in foregoing description and accompanying drawing only limit the present invention as an example and not.Every equivalence variation of making according to the design spirit in the present invention or modification or equal proportion zoom in or out etc., all should think and fall into protection scope of the present invention.