CN103758908B - Pneumatic damping device - Google Patents
Pneumatic damping device Download PDFInfo
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- CN103758908B CN103758908B CN201410014166.9A CN201410014166A CN103758908B CN 103758908 B CN103758908 B CN 103758908B CN 201410014166 A CN201410014166 A CN 201410014166A CN 103758908 B CN103758908 B CN 103758908B
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Abstract
The invention discloses a pneumatic damping device comprising a piston, a piston rod, an air cylinder and an end cover plate. One end of the piston rod is fixedly connected with the piston in the air cylinder, and the other end of the piston rod penetrates a gland to extend out of the air cylinder. The gland is fixed at one end of the air cylinder, and the end cover plate is fixed at the other end of the air cylinder. A release valve device is arranged on the piston and used for realizing communication or separation of chambers on two sides of the piston, and the air cylinder is filled with high-pressure air. The release valve device comprises a spool, a spool hole arranged on the piston, a spring and a press plate. The piston moves at the initial stage of the stroke to compress air to generate resistance, the resistance is increased quickly along with increase of displacement, and a protruding ejector rod of the spool and the inner end face of the air cylinder are squeezed to open a release valve at the later period of the stroke, so that the resistance is reduced within a short time. The pneumatic damping device is used for eliminating vibration generated during collision of two objects and can be used as an on-off buffer for a high-tension switch so as to avoid jumping and bounce during on and off of the high-tension switch.
Description
Technical field
The invention belongs to gas weakening field, specifically a kind of gas formula vibration damping device.
Background technique
Current high-voltage switch gear mean velocity when divide-shut brake will be sought quickness, time requirement is short, a problem is brought to be that contact hourly velocity is high like this, impact force at contact is large, and mechanical deterioration is large, brings contact bounce-back simultaneously, make switch when closing a floodgate, close and separately, cause larger electrical impact, namely shove.Higher in separating brake hourly velocity, separately arrival separating brake limit position hourly velocity is still higher for contact, and contact will rebound, and to the motion of combined floodgate direction, when the distance between the contact of switch is too small, just produce electric discharge, namely arcing occur or restrike.Shove and to work the mischief to switching device and even whole electrical network with arcing.
Be at present closes a floodgate to add energy dissipation spring for closing rebound and the separating brake of the switch general way of this phenomenon of bouncing, separating brake increase liquid condenser, combined floodgate has spring buffer.Make divide-shut brake exercise performance increase like this, but this situation can not be improved greatly.Because during switch separating brake, the time of moving body never between resistance to very large damping force is very short, will produce impact equally, impact whole mechanism.When switch closes a floodgate, because moving body speed is more and more higher from motion, during contact, movement velocity reaches the highest, spring can play buffer function, but the mechanism of its buffering is temporary transient stored energy, and spring is discharged at last by the energy compressing rear storage, causes moving body back to move, cause the temporary transient separation of switch contact, cause switch separating brake.When mechanism continues to close a floodgate, this process repeatedly several times after final switch close a floodgate.Therefore no matter at switch separating brake or when closing a floodgate, prior art is difficult to properly settle this difficult problem.
Summary of the invention
The object of the invention is for prior art Problems existing, provide a kind of and can make the gas formula vibration damping device that switching tube moving contact is subject to damping deceleration at combined floodgate stroke leading portion, the damping of combined floodgate stroke latter end is removed.
Principle of the present invention is, gas formula vibration damping device adopts Cheng Qian phase pressurized gas of being expert at, produces three technique processes of damping and stroke end of a period Rapid degassing elimination damping.The piston of gas formula vibration damping device produces the resistance slowly risen at combined floodgate stroke leading portion pressurized gas, pressurized gas consumes the portion of energy of gas storage by aperture on the other hand; The speed of moving body is made originally not to be subject to too large impact, rise fast at stroke later stage resistance, reduce moving body speed fast, the air valve core on stroke end of a period piston opens releasing compressed gas, eliminating damping, avoiding pressurized gas to make moving body resilience when colliding.
Because pressurized gas:
P
1V
1/T
1＝P
2V
2/T
2
Now compression can regard an adiabatic process as instantaneously, T
1=T
2.Therefore:
P
1V
1＝P
2V
2
P
2＝P
1V
1/V
2
Again because gas is leaked to some extent by aperture, after Leakage Gas, air pressure is less than theoretical value, is called leadage coefficient, represents with symbol k, and k is a value being less than 1.Then have:
P
2＝k*P
1V
1/V
2
F＝S*k*P
1V
1/V
2
In above formula: the original air pressure of P1-closed chamber, air pressure after the compression of P2-closed chamber, the original volume of V1-closed chamber, volume after the compression of V2-closed chamber, the original gas temperature of T1-closed chamber, the existing gas temperature of T2-closed chamber, k-leadage coefficient, the useful area of S-piston, the resistance that F-produces.
F is for producing resistance, and along with the change of displacement, the resistance of generation is increasing.
In the chamber, opposite of compression chamber, meanwhile produce the negative pressure compared with compression chamber, its negative pressure is consistent with the drag direction of generation, strengthens damping.
Technological scheme of the present invention provides a kind of gas formula vibration damping device, comprises piston 6, piston rod 23, cylinder body 5, end cap 1; Described piston rod 23 stretches into cylinder interior from the upper end of cylinder body 5, and the lower end of piston rod 23 is fixedly connected with the piston 6 be placed in cylinder; End cap 1 is fixed on the lower end of cylinder body 5; Described piston 6 is provided with gas bleeder valve device 7, makes piston both sides chamber or partition.
When the present invention applies, cylinder body is fixed, and piston rod is connected with needing the moving element cushioned.Moving element drives piston rod to move from bottom to top, piston on piston rod from stroke initially gas progressively in compression cylinder in upper chamber, piston compression gas produces resistance, and resistance increases fast along with the increase of piston movement stroke, damping strengthens, realize slowing down to moving element, pressurized gas can flow to low voltage side from the aperture piston from high pressure side, the portion of energy that release stores; Open at piston stroke latter end gas bleeder valve device, releasing compressed gas, the energy stored by elimination, resistance is eliminated, and makes moving element maintain former speed and runs, thus avoid compressed side stored energy to cause moving element to rebound.
The following in addition improved plan further of the technical program:
Described gas bleeder valve device 7 comprises spool 9, the spool bore 10 be arranged on piston 6, spring 17 and compressing tablet 11, and described spool 9 coordinates with spool bore 10; Spool 9 comprise connect in turn piston portion 101, push rod portion 102; Spool 9, spring 17 are placed in spool bore 10 in turn, and the push rod portion 102 of spool 9 protrudes from the upper-end surface of piston 6, and compressing tablet 11 holddown spring 17 is also fixed on the lower end surface of piston 6; Piston push rod portion 103 protruding from piston 6 upper-end surface of spool 9 in movement process extrudes with the inner side surface 20 of cylinder body upper end portion and opens gas bleeder valve device 7.At piston movement stroke latter end, the spool push rod portion be arranged on piston touches cylinder upper end cap inner side surface, and gas bleeder valve device is unlocked, and in cylinder body upper chamber, compressed energy-storage gas flows rapidly to inferior part of the cylinder block chamber by spool bore, the energy that release stores, reduces damping; When the air pressure balance of upper and lower two chambers, resistance is eliminated, and buffering terminates, and is buffered object and can not be buffered energy storage gas bounce-back at a high speed in device.
Piston portion 101 and the push rod portion 102 of described spool 9 are fastenedly connected or one-body molded.Described be fastenedly connected into welding or bolt connect.
Described piston 6 is circular, and piston 6 is divided into upper chamber and lower chambers cylinder body 5, and the side surface circumference of piston 6 is provided with the first groove 16; The middle part of piston 6 is provided with piston circular hole 4, is provided with the first Sealing 8 in described first groove 16.The internal surface of piston circular hole 4 is provided with in the second groove 61, second groove 61 and is provided with the second Sealing 19 further.Sealing and groove fit use, and make each selfsealings of upper and lower two chamber of buffer.
The upper chamber of described cylinder body 5 be provided with the connecting passage that at least one is communicated with two chambers between lower chambers.The area of described connecting passage is no more than 1% of piston area.Connecting passage can improve the damping characteristics of buffer, and connecting passage sectional area is little, and buffer damping is large; Area is large, and buffer damping is little; Need to design the long-pending connecting passage of suitable cross-section according to buffering.
Described connecting passage is the damping hole 18 be arranged on piston, or described connecting passage is be arranged on spool 9 and the damping hole in through piston portion 101 and push rod portion 102, or described connecting passage is be arranged on the damping hole on piston rod 23.
Described connecting passage is be arranged on the communication groove on cylinder body 5 madial wall, the axis being parallel of described communication groove and cylinder body 5.
The upper chamber of cylinder body 5 and the cylinder side wall of lower chambers are respectively equipped with through hole, the conduit be located at outside chamber is communicated with two through hole, realize being communicated with between the upper chamber of cylinder body 5 and lower chambers.
The upper end cap of described cylinder body 5 is provided with cylinder body upper end cap circular hole 51, and the internal surface of cylinder body upper end cap circular hole 51 is circumferentially provided with in the 3rd groove the 53, three groove 53 and is provided with the 3rd Sealing 13; Cylinder body 5 upper end cap be at least provided with 2 with cylinder body first screw hole 52 of Boring mill line parallel.The axle portion of piston rod is sealed by the 3rd Sealing and cylinder body upper end cap circular hole and is dynamically connected.
The lower ending opening of described cylinder body 5, the lower end of cylinder wall be at least provided with 2 with cylinder body second screw 54 of the axis being parallel of cylinder body.
The upper end of described cylinder body 5 is provided with cover clamp 14, is provided with cover clamp circular hole 140 in the middle part of cover clamp 14, and cover clamp 14 is provided with at least 2 cover clamp fastener holes 141, and described cover clamp fastener hole 141 coordinates with cylinder body first screw hole 52 of cylinder body 5 upper end cap.
Described piston rod 23 comprise connect in turn engagement portion 231, piston part 232, axle portion 233 and joint 234; Described engagement portion 231 and piston part 232 are through piston circular hole 4, and the cover clamp circular hole of cylinder body upper end cap circular hole 51 and cover clamp 14 that axle portion 233 is each passed through cylinder body 5 reaches outside cylinder body 5; That the diameter in described axle portion 233 is greater than piston part 232 and engagement portion 231 or be provided with limiting piston position between axle portion 233 and piston part 232 projection; Engagement portion 231 is provided with outside thread, joint 234 be provided with outside thread or internal thread.
Described end cap 1 is provided with at least one and installs the unidirectional valve opening 113 of one-way valve, end cap 1 comprise connect in turn sealed department 112, cover portion 111; Describedly cover the lower end that portion 111 is covered on cylinder body, sealed department 112 stretches in cylinder body 5, the excircle of sealed department 112 is provided with the 4th groove 114, the 4th Sealing 3 is provided with in 4th groove 114, cover portion 111 and be provided with at least 2 end cap screws 115, end cap screw 115 matches with cylinder body second screw hole 54 of cylinder wall lower end.
The one-way valve 2 that ecto-entad leads to, stops from inside to outside is installed in the unidirectional valve opening 113 on described end cap 1.The design of one-way valve 2 is convenient is filled with pressurized gas in the cylinder body of buffer, prevents high pressure gas leakage simultaneously.Pressurized gas can produce larger cushion effect; Preferably be filled with nitrogen, other inert gas such as helium, neon can also be filled with, prevent the oxidation of Sealing, increase the service life.
On the inner side surface of described cylinder body 5 upper end portion, above spool push rod portion 102, be provided with metal catch or cemented carbide catch 12.Setting-in stainless steel sheets on the inner side surface of the gas formula vibration damping device cylinder body upper end cap contacted with spool further, prevents from producing inside air valve core and cylinder body upper end cap wearing and tearing, and extends the working life of buffer cylinder body.
The material of described cylinder body 10, piston 6, cover clamp 14, end cap 1 is aluminum or aluminum alloy.
Be filled with pressurized gas in described cylinder body 5, the pressure of described pressurized gas is greater than a standard atmospheric pressure.
The invention provides a kind of electromagnetic driver, comprise above-mentioned gas formula vibration damping device 24, also comprise electromagnetic drive mechanism, the gentle formula vibration damping device 24 of described electromagnetic drive mechanism axially connects.
Described electromagnetic drive mechanism comprises electromagnetic drive mechanism cylinder body 28, cover electromagnetic drive mechanism lower end cap 25 in electromagnetic drive mechanism cylinder body 28 lower end, cover electromagnetic drive mechanism upper end cap 31 in electromagnetic drive mechanism cylinder body 28 upper end, through electromagnetic drive mechanism upper end cap 31 and electromagnetic drive mechanism lower end cap 25 and two ends reach the Electromagnetic Drive axle 40 outside cylinder body; The axle portion that described Electromagnetic Drive axle 40 is positioned at cylinder body is provided with motion iron core 27, is provided with the second coil 26 in the cavity of resorption of electromagnetic drive mechanism cylinder body 28, is provided with the first coil 30 in the epicoele of electromagnetic drive mechanism cylinder body 28.
The joint 234 of the piston rod 23 of the gentle formula vibration damping device 24 in lower end of the Electromagnetic Drive axle 40 of described electromagnetic drive mechanism connects.
Gas formula vibration damping device and electromagnetic drive mechanism are taken offence with the use of the Electromagnetic Drive axle Sports band of, electromagnetic drive mechanism the piston movement of formula vibration damping device, and piston compression gas also stores the kinetic energy of Electromagnetic Drive axle, produces damping and slows down to Electromagnetic Drive axle; Open gas bleeder valve device at Electromagnetic Drive axle stroke latter end, the energy that release stores, the damping function of the degassing type vibration damping device that disappears, avoids energy storage gas in gas formula vibration damping device to cause Electromagnetic Drive axle to rebound.
The invention provides a kind of switch gear, comprise above-mentioned electromagnetic driver, also comprise at least one single-pole switch, described electromagnetic driver is connected with single-pole switch.
Described single-pole switch comprises insulated tension pole 32, insulating cylinder 33, vacuum bubbles 36; Be interconnected between described insulated tension pole 32, insulating cylinder 33, vacuum bubbles 36, electromagnetic driver.
Described vacuum bubbles 36 comprises fixed contact 37, moving contact 35, moving contact leading-off rods 34, fixed contact leading-off rods 38; Moving contact leading-off rods 34 is connected with the upper shaft of insulating cylinder, and the lower end axle of insulating cylinder is connected with electromagnetic driver.
Setting-in damper 39 in described insulating cylinder 33, the coupling shaft 41 of described damper 39 is connected with the moving contact leading-off rods 34 of vacuum bubbles.
Described damper 39 is provided with cylinder body, and coupling shaft 41 inserts in cylinder body from the top of cylinder body, and the lower end of coupling shaft is provided with piston, and piston is provided with the overflow hole of up/down perforation, is provided with Returnning spring between piston and cylinder body bottom surface; Described cylinder body is built with power consumption oil.
Electromagnetic driver and switch with the use of, when closing a floodgate, the Electromagnetic Drive axle band in electromagnetic driver is taken offence the piston movement of formula vibration damping device, and piston compression gas also stores the kinetic energy of Electromagnetic Drive axle, produces damping and slows down to switch movable contact; At moving contact stroke latter end, spool clashes into cylinder body upper end portion inner side surface opens gas bleeder valve device, the energy that release stores, and the damping function of the degassing type vibration damping device that disappears, makes moving contact keep former speed to move; Thus avoid energy storage gas in gas formula vibration damping device and cause dynamic touching to close bounce-back, realize switch and close a floodgate without spring.
Beneficial effect:
The present invention ensures that be expert at Cheng Qian section of gas formula vibration damping device produces damping, removes damping and do not cause coupled moving element to produce bounce-back at stroke latter end.By being arranged on the gas bleeder valve device on gas formula vibration damping device piston, Cheng Qian section piston compression gas storage energy of being expert at produces damping, and stroke latter end is opened gas bleeder valve device release energy storage gas and removed damping, avoids gas formula vibration damping device to cause moving element to rebound.By arranging metal catch inside the cap of cylinder body upper end, improve the working life of cylinder body.By adopting gas formula vibration damping device, avoiding switch to steep moving contact bounce-back, realizing closing a floodgate without spring of switch.
Accompanying drawing explanation
Fig. 1 gas formula vibration damping device assembling schematic diagram.
Fig. 2 gas formula vibration damping device cylinder body cross-sectional schematic.
Fig. 3 gas formula vibration damping device piston cross-sectional schematic.
Fig. 4 gas formula vibration damping device spool cross-sectional schematic.
Fig. 5 gas formula vibration damping device cover clamp cross-sectional schematic.
Fig. 6 gas formula vibration damping device end cap cross-sectional schematic.
Fig. 7 gas formula vibration damping device piston shaft cross-sectional schematic.
Fig. 8 electromagnetic driver schematic diagram.
Fig. 9 switch gear schematic diagram.
In figure, 1-end cap, 2-one-way valve, 3-the 4th Sealing, 4-piston circular hole, 5-cylinder body, 6-piston, 7-gas bleeder valve device, 8-first Sealing, 9-spool, 10-spool bore, 11-compressing tablet, 12-catch, 13-the 3rd Sealing, 14-cover clamp, 15-locking nut, 16-first groove, 17-spring, 18-damping hole, 19-second Sealing, the inner side surface of 20-cylinder body upper end portion, 22-fixed hole, 23-piston rod, 24-gas formula vibration damping device, 25-electromagnetic drive mechanism lower end cap, 26-second coil, 27-motion iron core, 28-electromagnetic drive mechanism cylinder body, 30-first coil, 31-electromagnetic drive mechanism upper end cap, 32-insulated tension pole, 33-insulating cylinder, 34-moving contact leading-off rods, 35-moving contact, 36-vacuum bubbles, 37-fixed contact, 38-fixed contact leading-off rods, 39-damper, 40-Electromagnetic Drive axle, 41-coupling shaft, 51-cylinder body upper end cap circular hole, 52-the 3rd groove, 53-cylinder body first screw hole, 54-cylinder body second screw, 61-second groove, 101-piston portion, 102-push rod portion, 111-covers portion, 112-sealed department, the unidirectional valve opening of 113-, 114-the 4th groove, 115-end cap screw, 140-cover clamp circular hole, 140-cover clamp circular hole, 141-cover clamp fastener hole, 231-engagement portion, 232-piston part, 233-axle portion, 234-joint.
Embodiment
In order to illustrate technological scheme of the present invention and technical purpose, below in conjunction with accompanying drawing and optimum embodiment, the present invention is described further.
Embodiment 1:
As shown in Figure 1, a kind of gas formula vibration damping device, comprises piston 6, piston rod 23, cylinder body 5, cover clamp 14, end cap 1; Described piston rod 23 stretches into cylinder interior through cover clamp 14 from the upper end of cylinder body 5, and the lower end of piston rod 23 is fixedly connected with the piston 6 be placed in cylinder by locking nut 15; Cover clamp 14 is fixed on the upper end of cylinder body 5, and end cap 1 is fixed on the lower end of cylinder body 5; Described piston 6 is provided with gas bleeder valve device, makes piston both sides chamber or partition; In cylinder body 5, charged pressure is greater than the high-pressure working gas of a standard atmospheric pressure, and the pressure of working gas is preferably 2 standard atmospheric pressures; Working gas is preferably nitrogen, also can be other inert gas such as helium, neon, prevent the oxidation of Sealing, increase the service life; Cylinder inner high voltage gas can produce larger cushion effect.The material of above-mentioned cylinder body 10, piston 6, cover clamp 14, end cap 1 is aluminum or aluminum alloy.
As shown in Figure 1, Figure 3 and Figure 4, described gas bleeder valve device comprises spool 9, the spool bore 10 be arranged on piston, spring 17 and compressing tablet 11, and described spool 9 coordinates with spool bore 10; Spool 9 comprise connect in turn piston portion 101, push rod portion 102; Spool 9, spring 17 are placed in spool bore 10 in turn, and the push rod portion 102 of spool 9 protrudes from the upper-end surface of piston 6, and compressing tablet 11 holddown spring 17 is also fixed on the lower end surface of piston; The inner side surface 20 of projection and cylinder body upper end portion that piston spool 9 in movement process protrudes from the push rod portion 103 of piston 6 upper-end surface extrudes opens gas bleeder valve device 7.The piston portion 101 of described spool 9 is one-body molded with push rod portion 102; Described spool 9 is shaping also has alternate manner, as spool 9 piston portion 101 with to weld between push rod portion 102 or bolt is fixedly connected with.
As shown in Figure 3, described piston 6 is circular, and piston 6 is divided into upper chamber and lower chambers cylinder body 5, and the side surface circumference of piston is provided with the first groove 16; The center of piston 6 is provided with piston circular hole 4, and the internal surface of piston circular hole 4 is provided with the second groove 61, is provided with in the first Sealing 8, second groove 61 and is provided with the second Sealing 19 in described first groove 16.Sealing and groove fit use, and make each selfsealings of upper and lower two chamber of buffer.Described piston is provided with damping hole 18, and damping hole 18 is communicated with upper chamber and the lower chambers of cylinder body 5; Damping hole 18 is no more than 1% of piston area for sectional area, and preferably 0.8%.Damping hole can improve the damping characteristics of gas formula vibration damping device, and damping hole sectional area is little, and buffer damping is large; Area is large, and buffer damping is little; Need to design the long-pending damping hole of suitable cross-section according to buffering.The connecting passage being communicated with cylinder body upper chamber and lower chambers also has other mode of execution, as as described in connecting passage for being arranged on the upper and damping hole of through piston portion (101) and push rod portion (102) of spool (9), or described connecting passage is for being arranged on the damping hole on piston rod (23).
As shown in Figure 2, the upper end cap of described cylinder body 5 is provided with cylinder body upper end cap circular hole 51, and the internal surface of cylinder body upper end cap circular hole 51 is circumferentially provided with in the 3rd groove the 53, three groove 53 and is provided with the 3rd Sealing 13; Cylinder body 5 upper end cap be at least provided with 2 with cylinder body first screw hole 52 of Boring mill line parallel.The axle portion of piston rod is sealed by the 3rd Sealing and cylinder body upper end cap circular hole and is dynamically connected.The lower ending opening of cylinder body 5, the lower end of cylinder side wall be at least provided with 2 with cylinder body second screw 54 of the axis being parallel of cylinder body; Cylinder side wall upper end be at least provided with 2 with the fixed hole 22 of Boring mill line parallel.
Further, setting-in stainless steel catch 12 on the cap inner side surface of cylinder body 5 upper end, above spool push rod portion 102, prevents air valve core from causing producing wearing and tearing inside the cap of cylinder body upper end, extends the working life of the cylinder body of gas formula vibration damping device.
As shown in Figure 5, cover and be provided with cover clamp circular hole in the middle part of the cover clamp 14 of cylinder body 5 upper end cap, cover clamp 14 is also provided with at least 2 cover clamp fastener holes 141, and described cover clamp fastener hole 141 coordinates with cylinder body first screw hole 52 of cylinder body 10 upper end cap.
As shown in Figure 7, described piston rod 23 comprise connect in turn engagement portion 231, piston part 232, axle portion 233 and joint 234; Described engagement portion 231 and piston part 232 are through piston circular hole 4, and the cover clamp circular hole of cylinder body upper end cap circular hole 51 and cover clamp 14 that axle portion 233 is each passed through cylinder body 10 reaches outside cylinder body 10; That the diameter in described axle portion 233 is greater than piston part 232 and engagement portion 231 or be provided with limited piston position between axle portion 233 and piston part 232 projection; Engagement portion 231 is provided with outside thread, and joint 234 is provided with outside thread or internal thread, is preferably internal thread.
As shown in Figure 6, described end cap 1 is provided with at least one and installs the unidirectional valve opening 113 of one-way valve, end cap 1 comprise connect in turn sealed department 112, cover portion 111; Describedly cover the lower end that portion 111 is covered on cylinder body, sealed department 112 stretches in cylinder body 5, the excircle of sealed department 112 is provided with the 4th groove 114, the 4th Sealing 3 is provided with in 4th groove 114, cover portion 111 and be provided with at least 2 end cap screws 115, end cap screw 115 matches with cylinder body second screw hole 54 of cylinder wall lower end.The one-way valve 2 that ecto-entad leads to, stops from inside to outside is installed in the unidirectional valve opening 113 on end cap 1.The design of one-way valve is convenient is filled with pressurized gas in the cylinder body of buffer, prevents high pressure gas leakage simultaneously.
Working procedure of the present invention is that the piston of gas formula vibration damping device is from the gas upper chamber in the initial progressively compression cylinder of stroke, piston compression gas produces resistance, and resistance increases fast along with the increase of piston movement stroke, damping strengthens, and realizes the deceleration to moving element.In the piston movement stroke later stage, the spool push rod portion be arranged on piston touches cylinder upper end cap inner side surface, and gas bleeder valve device is unlocked, and in cylinder body upper chamber, compressed energy-storage gas flows rapidly to inferior part of the cylinder block chamber by spool bore, the energy that release stores, reduces damping; When the air pressure balance of upper and lower two chambers, resistance is eliminated, and buffering terminates, and is buffered object and can not be buffered energy storage gas bounce-back at a high speed in device.
Embodiment 2:
As shown in Figure 8, a kind of electromagnetic driver, comprises the gas formula vibration damping device 24 of electromagnetic drive mechanism and embodiment 1; The gentle formula vibration damping device 24 of electromagnetic drive mechanism axially connects.Electromagnetic drive mechanism comprises electromagnetic drive mechanism cylinder body 28, cover electromagnetic drive mechanism lower end cap 25 in electromagnetic drive mechanism cylinder body 28 lower end, cover electromagnetic drive mechanism upper end cap 31 in electromagnetic drive mechanism cylinder body 28 upper end, through electromagnetic drive mechanism lower end cap 25 and electromagnetic drive mechanism upper end cap 31 and two ends reach the Electromagnetic Drive axle 40 outside cylinder body; The axle portion that described Electromagnetic Drive axle 40 is positioned at cylinder body is provided with motion iron core 27, is provided with the second coil 26 in the cavity of resorption of electromagnetic drive mechanism cylinder body 28, is provided with the first coil 30 in the epicoele of electromagnetic drive mechanism cylinder body 28.The joint 234 of the piston rod 23 of the gentle formula vibration damping device 24 in lower end of the Electromagnetic Drive axle 40 of electromagnetic drive mechanism connects.
Gas formula vibration damping device and electromagnetic drive mechanism are taken offence with the use of the Electromagnetic Drive axle Sports band of, electromagnetic drive mechanism the piston movement of formula vibration damping device, and piston compression gas also stores the kinetic energy of Electromagnetic Drive axle, produces damping and slows down to Electromagnetic Drive axle; Open gas bleeder valve device at Electromagnetic Drive axle end of travel, the energy that release stores, eliminate the damping function of buffer, avoid energy storage gas in buffer to cause Electromagnetic Drive axle to rebound.
Embodiment 3:
As shown in Figure 9, a kind of switch gear, comprise the electromagnetic driver of embodiment 5, a single-pole switch, described electromagnetic driver is connected with single-pole switch.Single-pole switch comprises insulated tension pole 32, insulating cylinder 33, vacuum bubbles 36; Described insulated tension pole 32, insulating cylinder 33, vacuum bubbles 36, electromagnetic driver axially connect.The present embodiment is described this switch gear for a single-pole switch, and described single-pole switch can also be more than 2 or 3.
Described vacuum bubbles 36 comprises fixed contact 37, moving contact 35, moving contact leading-off rods 34, fixed contact leading-off rods 38; Moving contact leading-off rods 34 is connected with the upper shaft of insulating cylinder, and the lower end axle of insulating cylinder is connected with electromagnetic driver.
Setting-in damper 39 in described insulating cylinder 33, the coupling shaft 41 of described damper 39 is connected with the moving contact leading-off rods 34 of vacuum bubbles.
Described damper 39 is provided with cylinder body, and coupling shaft 41 inserts in cylinder body from the top of cylinder body, and the lower end of coupling shaft is provided with piston, and piston is provided with the overflow hole of up/down perforation, is provided with Returnning spring between piston and cylinder body bottom surface; Described cylinder body is built with power consumption oil.
Electromagnetic driver and Mono-pole switch with the use of, when closing a floodgate, Electromagnetic Drive axle band in electromagnetic driver is taken offence the piston movement of formula vibration damping device, and piston compression gas also stores the kinetic energy of Electromagnetic Drive axle, produces the moving contact of damping to switch gear and slows down; At moving contact stroke end, spool clashes into cylinder body upper end portion inner side surface opens gas bleeder valve device, the energy that release stores, and eliminates the damping function of buffer, makes moving contact keep former speed to move; Thus avoid energy storage gas in gas formula vibration damping device and cause the moving contact of switch gear to rebound, realize switch and close a floodgate without spring.
Above example is only do explanatory elaboration for the present invention, is not limited to this kind of mode of execution, can realize other any equivalents modes of the object of the invention and all belong to protection scope of the present invention.
Claims (22)
1. gas formula vibration damping device, comprises piston (6), piston rod (23), cylinder body (5), end cap (1); Described piston rod (23) stretches into cylinder interior from the upper end of cylinder body (5), and the lower end of piston rod (23) is fixedly connected with the piston be placed in cylinder (6); End cap (1) is fixed on the lower end of cylinder body (5); It is characterized in that: described piston (6) is provided with gas bleeder valve device (7), makes piston both sides chamber or partition; Described gas bleeder valve device (7) comprises spool (9), the spool bore (10) be arranged on piston, spring (17) and compressing tablet (11), and described spool (9) coordinates with spool bore (10); Spool (9) comprise connect in turn piston portion (101), push rod portion (102); Spool (9), spring (17) are placed in spool bore (10) in turn, the push rod portion (102) of spool (9) protrudes from the upper-end surface of piston (6), and compressing tablet (11) holddown spring (17) is also fixed on the lower end surface of piston; Piston inner side surface (20) in the push rod portion (102) and cylinder body upper end portion that protrude from piston upper-end surface of spool (9) in movement process extrudes opens gas bleeder valve device (7).
2. gas formula vibration damping device according to claim 1, is characterized in that, the piston portion (101) of described spool (9) and push rod portion (102) are fastenedly connected or one-body molded, described in be fastenedly connected as welding or bolt connect.
3. gas formula vibration damping device according to claim 1, it is characterized in that, described piston (6) is circular, the side surface circumference of piston (6) is provided with the first groove (16), is provided with the first Sealing (8) in described first groove (16); The middle part of piston (6) is provided with piston circular hole (4).
4. gas formula vibration damping device according to claim 1, it is characterized in that, described piston (6) is divided into upper chamber and lower chambers cylinder body (5), described upper chamber be provided with the connecting passage that at least one is communicated with piston both sides chamber between lower chambers.
5. gas formula vibration damping device according to claim 4, it is characterized in that, described connecting passage is the damping hole (18) be arranged on piston, or described connecting passage is gone up and the damping hole of through piston portion (101) and push rod portion (102) for being arranged on spool (9), or described connecting passage is for being arranged on the damping hole on piston rod (23).
6. gas formula vibration damping device according to claim 5, is characterized in that, the sectional area of described connecting passage is no more than 1% of piston area.
7. gas formula vibration damping device according to claim 1, it is characterized in that, the upper end cap of described cylinder body (5) is provided with cylinder body upper end cap circular hole (51), the internal surface of cylinder body upper end cap circular hole (51) is circumferentially provided with the 3rd groove (53), is provided with the 3rd Sealing (13) in the 3rd groove (53); Cylinder body (5) upper end cap be at least provided with 2 with cylinder body first screw hole (52) of Boring mill line parallel.
8. gas formula vibration damping device according to claim 1, it is characterized in that, the upper end of described cylinder body (5) is provided with cover clamp (14), cover clamp (14) middle part is provided with cover clamp circular hole (140), cover clamp (14) is provided with at least 2 cover clamp fastener holes (141), and described cover clamp fastener hole (141) coordinates with cylinder body first screw hole (52) of cylinder body (5) upper end cap.
9. gas formula vibration damping device according to claim 1, it is characterized in that, described piston rod (23) comprise connect in turn engagement portion (231), piston part (232), axle portion (233) and joint (234); Described engagement portion (231) and piston part (232) are through piston circular hole (4), and the cover clamp circular hole (140) of cylinder body upper end cap circular hole (51) and cover clamp (14) that axle portion (233) are each passed through cylinder body (5) reaches cylinder body (5) outward; Engagement portion (231) is provided with outside thread, joint (234) be provided with outside thread or internal thread.
10. gas formula vibration damping device according to claim 1, it is characterized in that, described end cap (1) is provided with at least one and installs the unidirectional valve opening (113) of one-way valve, end cap (1) comprise connect in turn sealed department (112), cover portion (111); Describedly cover the lower end that portion (111) is covered on cylinder body, sealed department (112) stretches in cylinder body (5), the excircle of sealed department (112) is provided with the 4th groove (114), the 4th Sealing (3) is provided with in 4th groove (114), cover portion (111) and be provided with at least 2 end cap screws (115), end cap screw (115) matches with cylinder body second screw hole (54) being arranged on cylinder wall lower end.
11. gas formula vibration damping devices according to claim 10, is characterized in that, install the one-way valve (2) that ecto-entad leads to, stops from inside to outside in the unidirectional valve opening (113) on described end cap (1).
12. gas formula vibration damping devices according to the arbitrary claim of claim 1-11, it is characterized in that, on the inner side surface of described cylinder body (5) upper end portion, above spool push rod portion (102), be provided with metal catch or cemented carbide catch (12).
13. gas formula vibration damping devices according to claim 12, is characterized in that, the material of described cylinder body (10), piston (6), cover clamp (14), end cap (1) is aluminum or aluminum alloy.
14. gas formula vibration damping devices according to claim 12, it is characterized in that, described cylinder body is filled with pressurized gas in (5), and the pressure of described pressurized gas is greater than a standard atmospheric pressure.
15. 1 kinds of electromagnetic drivers, comprise gas formula vibration damping device (24) according to claim 1, it is characterized in that: also comprise electromagnetic drive mechanism, and the gentle formula vibration damping device (24) of described electromagnetic drive mechanism axially connects.
16. electromagnetic drivers according to claim 15, is characterized in that: described electromagnetic drive mechanism comprises electromagnetic drive mechanism cylinder body (28), cover electromagnetic drive mechanism lower end cap (25) in electromagnetic drive mechanism cylinder body (28) lower end, cover electromagnetic drive mechanism upper end cap (31) in electromagnetic drive mechanism cylinder body (28) upper end, through electromagnetic drive mechanism upper end cap (31) and electromagnetic drive mechanism lower end cap (25) and two ends reach the Electromagnetic Drive axle (40) outside cylinder body; The axle portion that described Electromagnetic Drive axle (40) is positioned at cylinder body is provided with motion iron core (27), be provided with the second coil (26) in the cavity of resorption of electromagnetic drive mechanism cylinder body (28), in the epicoele of electromagnetic drive mechanism cylinder body (28), be provided with the first coil (30).
17. electromagnetic drivers according to claim 16, is characterized in that: the joint (234) of the piston rod (23) of the gentle formula vibration damping device (24) in lower end of the Electromagnetic Drive axle (40) of described electromagnetic drive mechanism connects.
18. 1 kinds of switch gears, comprise electromagnetic driver according to claim 15, it is characterized in that: at least also comprise a single-pole switch, described electromagnetic driver is connected with single-pole switch.
19. switch gears according to claim 18, is characterized in that: described single-pole switch comprises insulated tension pole (32), insulating cylinder (33), vacuum bubbles (36); Described insulated tension pole (32), insulating cylinder (33), vacuum bubbles (36), electromagnetic driver are interconnected.
20. switch gears according to claim 19, is characterized in that: described vacuum bubbles (36) comprises fixed contact (37), moving contact (35), moving contact leading-off rods (34), fixed contact leading-off rods (38); Moving contact leading-off rods (34) is connected with the upper shaft of insulating cylinder, and the lower end axle of insulating cylinder is connected with electromagnetic driver.
21. switch gears according to claim 19, it is characterized in that: the interior setting-in damper (39) of described insulating cylinder (33), the coupling shaft (41) of described damper (39) is connected with the moving contact leading-off rods (34) of vacuum bubbles.
22. switch gears according to claim 21, it is characterized in that: described damper (39) is provided with cylinder body, coupling shaft (41) inserts in cylinder body from the top of cylinder body, the lower end of coupling shaft is provided with piston, piston is provided with the overflow hole of up/down perforation, is provided with Returnning spring between piston and cylinder body bottom surface; Described cylinder body is built with power consumption oil.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410014166.9A CN103758908B (en) | 2014-01-13 | 2014-01-13 | Pneumatic damping device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410014166.9A CN103758908B (en) | 2014-01-13 | 2014-01-13 | Pneumatic damping device |
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| CN103758908A CN103758908A (en) | 2014-04-30 |
| CN103758908B true CN103758908B (en) | 2015-01-07 |
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| CN201410014166.9A Active CN103758908B (en) | 2014-01-13 | 2014-01-13 | Pneumatic damping device |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879569B (en) * | 2015-04-17 | 2016-10-05 | 燕山大学 | A kind of air damping fluid pressure line weakening pipe clamp |
| CN107007381B (en) * | 2017-04-14 | 2018-11-20 | 东阳市东狮卫浴有限公司 | Artificial limb |
| CN107314080A (en) * | 2017-08-31 | 2017-11-03 | 环球传动泰州有限公司 | A kind of chain with special pooling feature |
| CN109141111B (en) * | 2018-09-04 | 2020-06-02 | 大连理工大学 | Air damping buffer device for light-gas gun |
| CN111313304A (en) * | 2018-12-11 | 2020-06-19 | 吴长兰 | Power switch cabinet |
| CN110056594A (en) * | 2019-05-23 | 2019-07-26 | 儒拉玛特自动化技术(苏州)有限公司 | Buffer gear |
| CN113048179B (en) * | 2020-09-18 | 2023-01-06 | 深圳市大通精密五金有限公司 | High-precision hydraulic oblique wedge spring device |
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| US2570362A (en) * | 1946-05-18 | 1951-10-09 | Mercier Jean | Telescopic shock absorbing strut |
| CN2221826Y (en) * | 1994-11-07 | 1996-03-06 | 常州市东南电力设备厂 | Gate-switching off air buffer of vacuum circuit breaker |
| CN1309812A (en) * | 1997-09-18 | 2001-08-22 | 霍莱茨荷兰公司 | Electromalgnetic actuator |
| CN201866152U (en) * | 2010-11-25 | 2011-06-15 | 北京双杰电气股份有限公司 | Gas damper for circuit breaker |
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| US8292274B2 (en) * | 2003-01-10 | 2012-10-23 | Barnes Group Inc. | Dampened compression spring rod |
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| US2570362A (en) * | 1946-05-18 | 1951-10-09 | Mercier Jean | Telescopic shock absorbing strut |
| CN2221826Y (en) * | 1994-11-07 | 1996-03-06 | 常州市东南电力设备厂 | Gate-switching off air buffer of vacuum circuit breaker |
| CN1309812A (en) * | 1997-09-18 | 2001-08-22 | 霍莱茨荷兰公司 | Electromalgnetic actuator |
| CN201866152U (en) * | 2010-11-25 | 2011-06-15 | 北京双杰电气股份有限公司 | Gas damper for circuit breaker |
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