CN114483719A - Vibration/noise reduction device suitable for multi-specification hydraulic equipment - Google Patents
Vibration/noise reduction device suitable for multi-specification hydraulic equipment Download PDFInfo
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- CN114483719A CN114483719A CN202111619187.XA CN202111619187A CN114483719A CN 114483719 A CN114483719 A CN 114483719A CN 202111619187 A CN202111619187 A CN 202111619187A CN 114483719 A CN114483719 A CN 114483719A
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- noise reduction
- connecting pipe
- cylinder body
- moving ring
- transmission rod
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/008—Reduction of noise or vibration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/17—Characterised by the construction of the motor unit of the straight-cylinder type of differential-piston type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/226—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having elastic elements, e.g. springs, rubber pads
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/228—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having shock absorbers mounted outside the actuator housing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Damping Devices (AREA)
- Actuator (AREA)
Abstract
The invention discloses a damping and noise reducing device suitable for multi-specification hydraulic equipment, and relates to the technical field of damping and noise reducing devices of hydraulic equipment. When the hydraulic oil flows into the first connecting pipe and synchronously flows into the branch pipe, the high-pressure hydraulic oil drives the first impeller to rotate, the first one-way bearing is locked at the moment, the rotating first impeller drives the screw rod to rotate through the first transmission rod, the rotating screw rod drives the noise reduction moving ring to move along with the movement of the piston on the outer side of the cylinder body, and active noise reduction frequency is synchronously generated in the noise reduction moving ring, so that noise generated by the movement of the piston is effectively weakened.
Description
Technical Field
The invention relates to the technical field of hydraulic equipment shock absorption and noise reduction devices, in particular to a shock absorption and noise reduction device suitable for hydraulic equipment with multiple specifications.
Background
The hydraulic device is a carrier of a hydraulic system, a complete hydraulic system consists of five parts, namely a power element, an executive element, a control element, an auxiliary element and hydraulic oil, the hydraulic equipment is a combination of the parts, the transmission force of the hydraulic equipment is large, the transmission and the configuration are easy, the hydraulic equipment is widely applied to industrial and civil industries, the executive element hydraulic cylinder and the hydraulic motor of the hydraulic system are used for converting the pressure energy of liquid into mechanical energy to obtain required linear reciprocating motion or rotary motion, the elements can be modified randomly according to the action to be designed to achieve the work to be finished, and the hydraulic device can generate larger vibration and noise during operation.
Three noise reduction measures are usually adopted for reducing noise, namely noise reduction at a sound source, noise reduction in a transmission process and noise reduction at human ears, which are all passive, in order to actively eliminate the noise, the technology of 'active noise elimination' is invented by people.
The pneumatic cylinder piston and cylinder body inner wall reciprocating friction can make the cylinder body produce great vibrations and noise in the use, if adopt the initiative technique of making an uproar, then the equipment of making an uproar is made an uproar to the initiative can not better adaptation pneumatic cylinder use, and can not be better carry out the initiative of making an uproar of falling in step along with the removal of piston, also can not be better carry out the local initiative and fall the noise, lead to the noise that the pneumatic cylinder produced in the operation process can not better weaken, make noise and vibrations produce great influence to the pneumatic cylinder operation in-process.
Disclosure of Invention
Based on the above, the invention aims to provide a damping and noise reducing device suitable for multi-specification hydraulic equipment, so as to solve the technical problem that noise generated in the operation process of a hydraulic cylinder cannot be weakened better due to the fact that synchronous active noise reduction cannot be better performed along with the movement of a piston, namely, local active noise reduction cannot be better performed in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a damping and noise-reducing device suitable for multi-specification hydraulic equipment comprises a base, a cylinder body, a telescopic rod and a piston, wherein a noise-reducing moving ring is arranged above the base and outside the cylinder body, and a first connecting pipe and a second connecting pipe are respectively arranged on two sides above the cylinder body;
branch pipes are arranged on the inner sides of the first connecting pipe and the second connecting pipe and are respectively communicated with the first connecting pipe and the second connecting pipe, one sides of two groups of branch pipes are respectively and rotatably connected with a first transmission rod and a second transmission rod, one sides of the first transmission rod and the second transmission rod are respectively and fixedly provided with a first impeller and a second impeller which extend into the branch pipes, the first transmission rod, the second transmission rod and the branch pipes are respectively and rotatably connected through a first one-way bearing and a second one-way bearing, and a lead screw which penetrates through a noise reduction moving ring is fixedly arranged between the first transmission rod and the second transmission rod;
the removal of making an uproar ring both sides of falling all are provided with the multiunit fixed plate, the multiunit the fixed plate outside is all fixed and is provided with the fixed axle, the fixed axle outside is rotated and is connected with the curb plate, every two sets of all rotate between the curb plate and be connected with spacing roller, be provided with the torsional spring between curb plate and the fixed plate.
By adopting the technical scheme, when hydraulic oil flows into the cylinder body from the first connecting pipe and the first circulation pipe, the piston is pushed to move and the telescopic rod is driven to withdraw, meanwhile, when the hydraulic oil flows into the first connecting pipe and synchronously flows into the branch pipe, high-pressure hydraulic oil drives the first impeller to rotate, because the first one-way bearing is locked at the moment, the rotating first impeller drives the screw rod to rotate through the first transmission rod, the rotating screw rod drives the noise reduction moving ring to move along with the movement of the piston outside the cylinder body, and active noise reduction frequency is synchronously generated inside the noise reduction moving ring, so that noise generated by the movement of the piston is effectively weakened, when the piston drives the telescopic rod to withdraw, the hydraulic oil on the other side inside the cylinder body flows into the second connecting pipe through the second circulation pipe, and at the moment, the discharged hydraulic oil flows into the branch pipe from the bottom, because the one-way bearing of second is idle running this moment, and then can not take place the problem of reversal interference through second transfer line and lead screw when the hydraulic oil that the bottom flowed in drives the second impeller rotation, it can be known above, when the piston drives the telescopic link and stretches out, hydraulic oil flows in from the second connecting pipe, discharge from first connecting pipe, and then can know, when the telescopic link is reciprocal flexible, the travelling ring of making an uproar falls and carries out reciprocating motion along with the piston, better reach synchronous initiative fall make an uproar and carry out the effect of making an uproar locally, whole noise reduction effect possesses certain pertinence, noise reduction effect is better.
The invention is further arranged in that two sides of the top of the base are fixedly provided with supporting frames matched with the cylinder body, the interior of the cylinder body is connected with a piston in a sliding manner, and one side of the piston is fixedly provided with a telescopic rod penetrating through the cylinder body.
Through adopting above-mentioned technical scheme, the support frame plays the support fixed action to the cylinder body, and the inside cushion that can increase and decrease different radians of support frame, and then makes better messenger's cylinder body of support frame carry out the fixed stay.
The invention is further provided that an electric control frame is fixedly arranged in the noise reduction moving ring, a plurality of groups of sound receiving heads are arranged in the middle position in the noise reduction moving ring, and a plurality of groups of horn mouths are arranged on two sides in the noise reduction moving ring.
By adopting the technical scheme, when the sound receiving head collects the noise generated by the movement of the piston, the noise signal is transmitted to the control circuit inside the electric control frame, the control circuit carries out real-time operation, and then the sound waves with opposite phases and the same amplitude with the noise are emitted through the plurality of groups of horn mouths to weaken the noise.
The invention is further provided that two sides of the top of the cylinder body are respectively provided with a first through pipe and a second through pipe.
By adopting the technical scheme, the first through pipe and the second through pipe are communicated with the inner part of the cylinder body, and the first through pipe and the second through pipe are respectively communicated with the first through pipe and the second through pipe, so that the first connecting pipe and the second connecting pipe are conveniently connected with the hydraulic cylinder.
The invention is further provided that the number of the sound receiving heads is three, the number of the bell mouths is six, and the sound receiving heads and the bell mouths are electrically connected with the electric control frame.
Through adopting above-mentioned technical scheme, three radio head of group are located both ends and bottom respectively, and more omnidirectional collects the discernment to the noise, and six horn mouths of group are located both ends and bottom equally, and more comprehensive noise weakens.
The invention is further provided that a supporting slide block extending to the inside of the base is fixedly arranged at the middle position of the bottom of the noise reduction moving ring, and a first sliding groove matched with the supporting slide block is arranged at the middle position of the top of the base.
Through adopting above-mentioned technical scheme, support the slider and play the support sliding action to falling the travelling ring of making an uproar, make the whole more stable when reciprocating motion of the travelling ring of making an uproar, the phenomenon that can not take place the skew.
The invention is further arranged in such a way that the two ends of the bottom of the noise reduction moving ring are fixedly provided with supporting legs extending into the base in an inclined manner, and the bottoms of the two groups of supporting legs are rotatably connected with supporting rollers.
Through adopting above-mentioned technical scheme, two sets of supporting legs and supporting roller wheel when playing the supporting role to falling the travelling ring of making an uproar, make the travelling ring of making an uproar more smooth at the removal in-process moreover, can not take place the phenomenon of interference.
The invention is further set that the two ends of the top of the base are both provided with second sliding chutes matched with the supporting legs and the supporting rollers, and the cross sections of the second sliding chutes are rectangular.
Through adopting above-mentioned technical scheme, the second spout not only is convenient for support the slip of running roller, plays the limiting displacement to spacing running roller moreover.
The invention is further arranged in that top covers positioned at the tops of the noise reduction moving rings are fixedly arranged at the outer sides of the first connecting pipe and the second connecting pipe, and through holes matched with the first connecting pipe, the second connecting pipe and the two groups of branch pipes are formed in the top covers.
Through adopting above-mentioned technical scheme, the top cap plays the guard action to falling the shift ring of making an uproar and lead screw, avoids external impurity to drop and causes the destruction to falling the shift ring of making an uproar and lead screw.
In summary, the invention mainly has the following beneficial effects:
1. when hydraulic oil flows into the cylinder body from the first connecting pipe and the first through-flow pipe, the piston is pushed to move and the telescopic rod is driven to retract, meanwhile, when the hydraulic oil flows into the first connecting pipe, the hydraulic oil synchronously flows into the branch pipe, and then the high-pressure hydraulic oil drives the first impeller to rotate, because the first one-way bearing is locked at the moment, the rotating first impeller drives the screw rod to rotate through the first transmission rod, the rotating screw rod drives the noise reduction moving ring to move along with the movement of the piston on the outer side of the cylinder body, and the active noise reduction frequency is synchronously generated in the noise reduction moving ring, so that the noise generated by the movement of the piston is effectively weakened, when the piston drives the telescopic rod to retract, the hydraulic oil on the other side in the cylinder body flows into the second connecting pipe through the second through-flow pipe, and the discharged hydraulic oil flows into the branch pipe from the bottom, at the moment, the second one-way bearing idles, and then the hydraulic oil flowing into the bottom drives the second impeller to rotate, and the problem of reverse interference between the second transmission rod and the screw rod cannot occur through the second transmission rod, so that the hydraulic oil flows in from the second connecting pipe and is discharged from the first connecting pipe when the piston drives the telescopic rod to extend out, and further, when the telescopic rod extends and retracts back and forth, the noise reduction moving ring moves back and forth along with the piston, so that the effects of synchronous active noise reduction and local noise reduction are better achieved, the overall noise reduction effect has certain pertinence, and the noise reduction effect is better;
2. according to the invention, the buffer support mechanisms are uniformly arranged on the two sides of the noise reduction moving ring, the limiting roller shafts are tightly attached to the outer wall of the cylinder body under the action of the torsion spring, the multiple groups of limiting roller shafts are used for limiting and supporting the cylinder body in different directions, the vibration generated in the operation process of the cylinder body is better weakened by the elasticity of the torsion spring under the action of the torsion spring, the cylinder body can adapt to hydraulic cylinders with multiple specifications, the multiple groups of limiting roller shafts can be used for limiting and supporting the hydraulic cylinders with multiple specifications within a certain size range under the action of the torsion spring, the influence of the vibration generated in the operation of the cylinder body on other working equipment is effectively avoided, and the stability of the hydraulic cylinders in operation is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention as a whole;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic view of the internal structure of the present invention;
FIG. 4 is an enlarged, partially exploded view of the present invention;
FIG. 5 is an enlarged view taken at A of FIG. 4 in accordance with the present invention;
FIG. 6 is an enlarged view of FIG. 4 at B according to the present invention;
FIG. 7 is an enlarged internal view of the present invention;
fig. 8 is an enlarged view of the invention at C of fig. 7.
In the figure: 1. a base; 2. a support frame; 3. a cylinder body; 4. a noise reduction moving ring; 5. a first flow pipe; 6. a second flow pipe; 7. a first connecting pipe; 8. a second connecting pipe; 9. a bypass pipe; 10. a first drive lever; 11. a second transmission rod; 12. a first one-way bearing; 13. a second one-way bearing; 14. a first impeller; 15. a second impeller; 16. a screw rod; 17. an electric control frame; 18. a radio head; 19. a bell mouth; 20. a fixing plate; 21. a fixed shaft; 22. a side plate; 23. a limiting roll shaft; 24. a torsion spring; 25. a support slide block; 26. a first chute; 27. supporting legs; 28. supporting rollers; 29. a telescopic rod; 30. a piston; 31. a second chute; 32. and a top cover.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The following describes an embodiment of the present invention based on its overall structure.
A shock absorption and noise reduction device suitable for multi-specification hydraulic equipment is disclosed, as shown in figure 1, figure 2, figure 3, figure 4, figure 5 and figure 6, and comprises a base 1, a cylinder body 3, a telescopic rod 29 and a piston 30, wherein two sides of the top of the base 1 are both fixedly provided with a support frame 2 matched with the cylinder body 3, the support frame 2 can support and fix the cylinder body 3, and cushion blocks with different radians are replaced in the support frame 2, so that hydraulic cylinders with different specifications and sizes can be supported and fixed conveniently, the piston 30 is connected in the cylinder body 3 in a sliding manner, the telescopic rod 29 penetrating through the cylinder body 3 is fixedly arranged on one side of the piston 30, a noise reduction moving ring 4 is arranged above the base 1 and positioned outside the cylinder body 3, wherein the inner diameter of the noise reduction moving ring 4 is larger than the outer diameter of the cylinder body 3, so that the cylinder body 3 can penetrate through the interior of the noise reduction moving ring 4, two sides above the cylinder body 3 are respectively provided with a first connecting pipe 7 and a second connecting pipe 8, a first through pipe 5 and a second through pipe 6 are respectively arranged on two sides of the top of the cylinder body 3;
the inner sides of the first connecting pipe 7 and the second connecting pipe 8 are both provided with branch pipes 9, the branch pipes 9 are respectively communicated with the first connecting pipe 7 and the second connecting pipe 8, one sides of two groups of branch pipes 9 are respectively and rotatably connected with a first transmission rod 10 and a second transmission rod 11, one sides of the first transmission rod 10 and the second transmission rod 11 are respectively and fixedly provided with a first impeller 14 and a second impeller 15 which extend into the branch pipes 9, the first transmission rod 10, the second transmission rod 11 and the branch pipes 9 are respectively and rotatably connected through a first one-way bearing 12 and a second one-way bearing 13, wherein the idle running directions of the first one-way bearing 12 and the second one-way bearing 13 are opposite, a lead screw 16 which penetrates through the noise reduction moving ring 4 is fixedly arranged between the first transmission rod 10 and the second transmission rod 11, when hydraulic oil flows into the cylinder body 3 from the first connecting pipe 7 and the first flow through pipe 5, the piston 30 is pushed to move and drive the telescopic rod 29 to be retracted, meanwhile, when the hydraulic oil flows into the first connecting pipe 7, the hydraulic oil synchronously flows into the branch pipe 9, and then the high-pressure hydraulic oil drives the first impeller 14 to rotate, because the first one-way bearing 12 is locked at the moment, the rotating first impeller 14 drives the screw rod 16 to rotate through the first transmission rod 10, the rotating screw rod 16 drives the noise reduction moving ring 4 to move along with the movement of the piston 30 on the outer side of the cylinder body 3, and the active noise reduction frequency is synchronously generated inside the noise reduction moving ring 4, so that the noise generated by the movement of the piston 30 is effectively weakened;
the both sides of the moving ring 4 that makes an uproar all are provided with multiunit fixed plate 20, the fixed axle 21 is all fixed to be provided with in the multiunit fixed plate 20 outside, the fixed axle 21 outside rotates and is connected with curb plate 22, all rotate between per two sets of curb plate 22 and be connected with spacing roller 23, be provided with torsional spring 24 between curb plate 22 and the fixed plate 20, and torsional spring 24 is located the outside of fixed axle 21, when curb plate 22 takes place the angle deflection for fixed axle 21, torsional spring 24 produces certain moment of torsion, and then make spacing roller 23 fix spacingly to 3 outer walls of cylinder body.
Referring to fig. 1, fig. 2 and fig. 7, an electric control frame 17 is fixedly disposed inside the noise reduction moving ring 4, a plurality of sets of sound receiving heads 18 are disposed at the middle position inside the noise reduction moving ring 4, a plurality of sets of bell mouths 19 are disposed on two sides inside the noise reduction moving ring 4, the number of the sound receiving heads 18 is three, the number of the bell mouths 19 is six, and the sound receiving heads 18 and the bell mouths 19 are electrically connected with the electric control frame 17.
Referring to fig. 1, 2 and 3, a supporting slider 25 extending into the base 1 is fixedly disposed at the middle position of the bottom of the noise reduction moving ring 4, the supporting slider 25 plays a role of supporting and sliding the noise reduction moving ring 4, so that the noise reduction moving ring 4 is more stable during the reciprocating movement and does not deviate, a first chute 26 matched with the supporting slider 25 is disposed at the middle position of the top of the base 1, supporting legs 27 extending into the base 1 are fixedly disposed at both ends of the bottom of the noise reduction moving ring 4 in an inclined manner, supporting rollers 28 are rotatably connected to the bottoms of the two groups of supporting legs 27, and second chutes 31 matched with the supporting legs 27 and the supporting rollers 28 are disposed at both ends of the top of the base 1, according to the present invention, the two groups of supporting legs 27 and the supporting rollers 28 are disposed to support the noise reduction moving ring 4 and make the noise reduction moving ring 4 more smooth in the moving process, the interference phenomenon can not occur.
Referring to fig. 1, the top cover 32 located at the top of the noise reduction moving ring 4 is fixedly arranged outside the first connecting pipe 7 and the second connecting pipe 8, and through holes matched with the first connecting pipe 7, the second connecting pipe 8 and the two branch pipes 9 are formed inside the top cover 32.
The working principle of the invention is as follows: when the damping and noise-reducing device is used, firstly, a cylinder body needing damping and noise reduction is placed inside the two groups of support frames 2 of the base 1, the cylinder body 3 penetrates through the inner sides of the noise-reducing moving rings, the two groups of support frames 2 are used for supporting and fixing the cylinder body 3, and cushion blocks with different radians are placed on the support frames 2, so that the damping and noise-reducing device can be suitable for mounting and fixing hydraulic cylinders with different specifications and sizes;
firstly, a first connecting pipe 7 and a second connecting pipe 8 are respectively communicated with a first flow pipe 5 and a second flow pipe 6, so that hydraulic oil can flow into the cylinder 3 through the first connecting pipe 7 and the second connecting pipe 8 to exert a pushing acting force on the piston 30;
when hydraulic oil flows into the cylinder body 3 from the first connecting pipe 7 and the first flow through pipe 5, the piston 30 is pushed to move and the telescopic rod 29 is driven to be retracted, meanwhile, when the hydraulic oil flows into the first connecting pipe 7 and synchronously flows into the branch pipe 9, then the high-pressure hydraulic oil drives the first impeller 14 to rotate, as the first one-way bearing 12 is locked at the moment, the rotating first impeller 14 drives the screw rod 16 to rotate through the first transmission rod 10, the rotating screw rod 16 drives the noise reduction moving ring 4 to move along with the movement of the piston 30 on the outer side of the cylinder body 3, and the inside of the noise reduction moving ring 4 synchronously generates active noise reduction frequency, so that noise generated by the movement of the piston 30 is effectively attenuated;
furthermore, a plurality of groups of sound receiving heads 18 are arranged in the middle position inside the noise reduction moving ring 4, the plurality of groups of sound receiving heads 18 are electrically connected with the electric control frame 17, when the sound receiving heads 18 collect noise generated by the movement of the piston 30, noise signals are transmitted to a control circuit inside the electric control frame 17, the control circuit performs real-time operation, and then sound waves with opposite phases and same amplitude with the noise are emitted through a plurality of groups of horn mouths 19 to weaken the noise;
when the piston 30 drives the telescopic rod 29 to retract, the hydraulic oil on the other side in the cylinder 3 flows into the second connecting pipe 8 through the second flow pipe 6, at this time, the discharged hydraulic oil flows into the branch pipe 9 from the bottom, and because the second one-way bearing 13 idles, the hydraulic oil flowing in from the bottom does not generate reverse interference with the screw rod 16 through the second transmission rod 11 when driving the second impeller 15 to rotate;
as can be seen from the above, when the piston 30 drives the telescopic rod 29 to extend, the hydraulic oil flows in from the second connecting pipe 8 and is discharged from the first connecting pipe 7, and further, when the telescopic rod 29 extends and retracts reciprocally, the noise reduction moving ring 4 moves reciprocally along with the piston 30, so that the effects of synchronous active noise reduction and local noise reduction are better achieved, the overall noise reduction effect has certain pertinence, and the noise reduction effect is better;
evenly be provided with buffering supporting mechanism through 4 both sides of the shift ring of making an uproar that falls, wherein the outer wall of cylinder body 3 is hugged closely to spacing roller 23 under the effect of torsional spring 24, spacing roller 23 of multiunit carries out spacing support at different position to cylinder body 3, and under the effect of torsional spring 24, the vibrations that 3 operation in-process of cylinder body produced are better weakened by torsional spring 24's elasticity, and can adapt to the pneumatic cylinder of multiple specification, spacing roller 23 of multiunit all can carry out spacing support to the pneumatic cylinder of multiple specification in certain size range under the effect of torsional spring 24, the effectual cylinder body 3 that has avoided produces vibrations in service and influence all the other equipment, the stability when having promoted the pneumatic cylinder operation.
Although embodiments of the present invention have been shown and described, it is intended that the present invention should not be limited thereto, that the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples, and that modifications, substitutions, variations or the like, which are not inventive and may be made by those skilled in the art without departing from the principle and spirit of the present invention and without departing from the scope of the claims.
Claims (9)
1. The utility model provides a vibration/noise reduction device suitable for many specifications hydraulic equipment, includes base (1), cylinder body (3), telescopic link (29) and piston (30), its characterized in that: a noise reduction moving ring (4) is arranged above the base (1) and on the outer side of the cylinder body (3), and a first connecting pipe (7) and a second connecting pipe (8) are respectively arranged on two sides above the cylinder body (3);
branch pipes (9) are arranged on the inner sides of the first connecting pipe (7) and the second connecting pipe (8), the branch pipes (9) are respectively communicated with the first connecting pipe (7) and the second connecting pipe (8), one sides of the two groups of branch pipes (9) are respectively and rotatably connected with a first transmission rod (10) and a second transmission rod (11), one sides of the first transmission rod (10) and the second transmission rod (11) are respectively and fixedly provided with a first impeller (14) and a second impeller (15) which extend into the branch pipes (9), the first transmission rod (10), the second transmission rod (11) and the branch pipes (9) are respectively and rotatably connected through a first one-way bearing (12) and a second one-way bearing (13), and a lead screw (16) penetrating through the noise reduction moving ring (4) is fixedly arranged between the first transmission rod (10) and the second transmission rod (11);
it all is provided with multiunit fixed plate (20), multiunit to fall the removal of making an uproar ring (4) both sides fixed plate (20), fixed plate (20) outside is all fixed and is provided with fixed axle (21), fixed axle (21) outside is rotated and is connected with curb plate (22), and is per two sets of all rotate between curb plate (22) and be connected with spacing roller (23), be provided with torsional spring (24) between curb plate (22) and fixed plate (20).
2. The device of claim 1, wherein the damping and noise reduction device is adapted for use in a multi-specification hydraulic apparatus, and comprises: the base (1) top both sides all are fixed be provided with cylinder body (3) matched with support frame (2), and cylinder body (3) inside sliding connection has piston (30), piston (30) one side is fixed to be provided with telescopic link (29) that run through cylinder body (3).
3. The device of claim 1, wherein the damping and noise reduction device is adapted for use in a multi-specification hydraulic apparatus, and comprises: the noise reduction moving ring (4) is internally and fixedly provided with an electric control frame (17), a plurality of groups of radio heads (18) are arranged at the middle position inside the noise reduction moving ring (4), and a plurality of groups of horn mouths (19) are arranged on two sides inside the noise reduction moving ring (4).
4. The device of claim 1, wherein the damping and noise reduction device is adapted for use in a multi-specification hydraulic apparatus, and comprises: the two sides of the top of the cylinder body (3) are respectively provided with a first through pipe (5) and a second through pipe (6), and the first through pipe (5) and the second through pipe (6) are respectively communicated with a first connecting pipe (7) and a second connecting pipe (8).
5. The device of claim 3, wherein the damping and noise reduction device is suitable for multi-specification hydraulic equipment, and is characterized in that: the number of the sound receiving heads (18) is three, the number of the horn mouths (19) is six, and the sound receiving heads (18) and the horn mouths (19) are electrically connected with the electric control frame (17).
6. The device of claim 1, wherein the damping and noise reduction device is adapted for use in a multi-specification hydraulic apparatus, and comprises: the noise reduction device is characterized in that a supporting sliding block (25) extending to the inside of the base (1) is fixedly arranged at the middle position of the bottom of the noise reduction moving ring (4), and a first sliding groove (26) matched with the supporting sliding block (25) is formed in the middle position of the top of the base (1).
7. The device of claim 1, wherein the damping and noise reduction device is adapted for use in a multi-specification hydraulic apparatus, and comprises: the both ends of making an uproar removal ring (4) bottom of making an uproar all incline fixedly and are provided with supporting leg (27) that extend to base (1) inside, two sets of supporting leg (27) bottom is rotated and is connected with supporting roller (28).
8. The shock-absorbing noise-reducing device suitable for multi-specification hydraulic equipment as claimed in claim 7, wherein: the base (1) top both ends all seted up with supporting leg (27), supporting roller (28) matched with second spout (31), and second spout (31) cross-section is the rectangle.
9. The device of claim 1, wherein the damping and noise reduction device is adapted for use in a multi-specification hydraulic apparatus, and comprises: the outer sides of the first connecting pipe (7) and the second connecting pipe (8) are fixedly provided with a top cover (32) located at the top of the noise reduction moving ring (4), and through holes matched with the first connecting pipe (7), the second connecting pipe (8) and the two branch flow pipes (9) are formed in the top cover (32).
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| CN202111619187.XA CN114483719B (en) | 2021-12-28 | 2021-12-28 | Damping and noise reducing device suitable for multi-specification hydraulic equipment |
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| CN202111619187.XA CN114483719B (en) | 2021-12-28 | 2021-12-28 | Damping and noise reducing device suitable for multi-specification hydraulic equipment |
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| CN112032143A (en) * | 2020-09-11 | 2020-12-04 | 常德市联嘉机械有限公司 | Noise elimination mechanism based on hydraulic cylinder |
| CN113153729A (en) * | 2021-04-12 | 2021-07-23 | 徐州新大隆化工泵业制造有限公司 | Noise reduction method and noise reduction device of plunger pump |
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| JP2000132175A (en) * | 1998-10-26 | 2000-05-12 | Toshiba Eng Co Ltd | Active noise reduction control system for rotating machine |
| US20020128072A1 (en) * | 2000-09-15 | 2002-09-12 | Terpay Gregory Weston | Active system and method for vibration and noise reduction |
| CN104759976A (en) * | 2015-03-12 | 2015-07-08 | 四川大学 | Noise reduction device and method for long-stroke large-diameter hydraulic cylinder honing processing procedure |
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| CN114483719B (en) | 2023-05-05 |
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