CN103758908A - Pneumatic damping device - Google Patents
Pneumatic damping device Download PDFInfo
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- CN103758908A CN103758908A CN201410014166.9A CN201410014166A CN103758908A CN 103758908 A CN103758908 A CN 103758908A CN 201410014166 A CN201410014166 A CN 201410014166A CN 103758908 A CN103758908 A CN 103758908A
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- end cap
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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
High-voltage switch gear mean velocity when divide-shut brake will be sought quickness at present, time requirement is short, while bringing like this problem to be contact, speed is high, contact impact power is large, and mechanical deterioration is large, has brought contact bounce-back simultaneously, make switch when closing a floodgate, closed and separately, caused larger electrical impact, having shoved.When separating brake, speed is higher, and when contact separately arrives separating brake limit position, speed is still higher, and contact will rebound, and to the motion of combined floodgate direction, when the distance between the contact of switch is too small, just produces electric discharge, arcing occurs or restrike.Shove and work the mischief to switching device and even whole electrical network with arcing.
For the closing rebound of switch and the separating brake general way of this phenomenon of bouncing, be at present to close a floodgate to have increased energy dissipation spring, separating brake increases liquid condenser, and combined floodgate has spring buffer.Make like this divide-shut brake exercise performance increase, but can not improve greatly this situation.Because during switch separating brake, moving body never resistance is very short to the time between very large damping force, will produce equally impact, and whole mechanism is impacted.When switch closes a floodgate, because moving body speed starts 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 the energy of the compressed rear storage of spring discharges at last, causes moving body back to move, cause the temporary transient separation of switch contact, caused switch separating brake.When mechanism continues to close a floodgate, this process repeatedly several times after final switch close a floodgate.Therefore no matter when switch separating brake still closes a floodgate, prior art is difficult to properly settle this difficult problem.
Summary of the invention
The object of the invention is the problem existing for prior art, a kind of gas formula vibration damping device that can make switching tube moving contact be subject to damping deceleration, combined floodgate stroke latter end damping releasing at combined floodgate stroke leading portion is provided.
Principle of the present invention is that gas formula vibration damping device adopts the 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 of rising at combined floodgate stroke leading portion pressurized gas, pressurized gas consumes the portion of energy of gas storage by aperture on the other hand; Make the speed of moving body originally, not be subject to too large impact, in stroke later stage resistance fast rise, fast reducing moving body speed, the air valve core on stroke end of a period piston is opened releasing compressed gas, eliminate damping, avoid pressurized gas to make moving body resilience when collision.
Because pressurized gas:
P
1V
1/T
1＝P
2V
2/T
2
Now moment compression can be regarded an adiabatic process, T as
1=T
2.Therefore:
P
1V
1＝P
2V
2
P
2＝P
1V
1/V
2
Because gas leaks to some extent by aperture, after Leakage Gas, air pressure is less than theoretical value, is called leadage coefficient again, and with symbol, k represents, k is one and is less than 1 value.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 variation of displacement, the resistance of generation is increasing.
Meanwhile in the chamber, opposite of compression chamber, 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 being 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 two side cavity be communicated with or cut off.
When the present invention applies, cylinder body is fixed, and piston rod is connected with the moving element that needs buffering.Moving element drives piston rod to move from bottom to top, piston on piston rod is the gas upper chamber in stroke initially starts compression cylinder progressively, piston compression γ-ray emission resistance, and resistance is along with the increase of piston movement stroke increases fast, damping strengthens, realization is slowed down to moving element, and pressurized gas can flow to low voltage side from high pressure side by the aperture from piston, discharges the portion of energy storing; At piston stroke latter end gas bleeder valve device, open, releasing compressed gas, eliminates stored energy, and resistance is eliminated, and makes moving element maintain former speed operation, thereby avoids compressed side stored energy to cause moving element bounce-back.
The following further improved plan in addition of the technical program:
Described gas bleeder valve device 7 comprises spool 9, is arranged on spool bore 10, spring 17 and compressing tablet 11 on piston 6, and described spool 9 coordinates with spool bore 10; Spool 9 comprises the piston portion 101, the push rod portion 102 that connect in turn; 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 springs 17 are also fixed on the lower end surface of piston 6; The push rod portion that protrudes from piston 6 upper-end surfaces 103 of piston spool 9 in movement process opens gas bleeder valve device 7 with 20 extruding of the inner side surface of cylinder body upper end portion.At piston movement stroke latter end, the spool push rod portion being 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 to inferior part of the cylinder block chamber fast by spool bore, discharge the energy storing, reduce damping; When the air pressure balance of upper and lower two chambers, resistance is eliminated, and buffering finishes, and is cushioned object and can be cushioned energy storage gas bounce-back at a high speed in device.
Piston portion 101 and the push rod portion 102 of described spool 9 is fastenedly connected or is one-body molded.Described being fastenedly connected as welding or bolt connection.
Described piston 6 is circular, and piston 6 is divided into upper chamber and lower chambers cylinder body 5, and the side circumference of piston 6 is provided with the first groove 16; The middle part of piston 6 is provided with piston circular hole 4, in described the first groove 16, is provided with the first Sealing 8.The internal surface of piston circular hole 4 is provided with in the second groove 61, the second grooves 61 and is provided with the second Sealing 19 further.Sealing and groove fit are used, and make the each selfsealings of upper and lower two chamber of buffer.
Between the upper chamber of described cylinder body 5 and lower chambers, be provided with the connecting passage that at least one is communicated with two 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; According to buffering, need to design the long-pending connecting passage of suitable cross-section.
Described connecting passage is the damping hole 18 being arranged on piston, or described connecting passage is the damping hole that is arranged on spool 9 and connects piston portion 101 and push rod portion 102, or described connecting passage is the damping hole being arranged on piston rod 23.
Described connecting passage is the communication groove being arranged on cylinder body 5 madial walls, and described communication groove is parallel with the axis of cylinder body 5.
On the upper chamber of cylinder body 5 and the cylinder side wall of lower chambers, be respectively equipped with through hole, be located at conduit outside chamber and be communicated with two through hole, realize between the upper chamber of cylinder body 5 and lower chambers and being communicated with.
The upper end cap of described cylinder body 5 is provided with cylinder body upper end cap circular hole 51, and the internal surface circumference of cylinder body upper end cap circular hole 51 is provided with in the 3rd groove 53, the three grooves 53 and is provided with the 3rd Sealing 13; Cylinder body 5 upper end caps be at least provided with 2 with cylinder body first screw hole 52 of Boring mill line parallel.The axial region of piston rod is dynamically connected by the 3rd Sealing and the sealing of cylinder body upper end cap circular hole.
The lower ending opening of described cylinder body 5, the lower end of cylinder wall is at least provided with 2 cylinder body second screws 54 parallel with the axis of cylinder body.
The upper end of described cylinder body 5 is provided with cover clamp 14, and cover clamp 14 middle parts are provided with cover clamp circular hole 140, 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 caps.
Described piston rod 23 comprises the engagement portion 231, piston part 232, axial region 233 and the joint 234 that connect in turn; Described engagement portion 231 and piston part 232 are through piston circular hole 4, and axial region 233 reaches outside cylinder body 5 through the cylinder body upper end cap circular hole 51 of cylinder body 5 and the cover clamp circular hole of cover clamp 14 respectively; Between that the diameter of described axial region 233 is greater than piston part 232 and engagement portion 231 or axial region 233 and piston part 232, be provided with the projection of limiting piston position; 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 the unidirectional valve opening 113 of one-way valve is installed, and end cap 1 comprises the sealed department 112 that connects in turn, covers portion 111; The described lower end that covers portion 111 and be 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, in the 4th groove 114, be provided with the 4th Sealing 3, 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.
Ecto-entad one-way valve 2 logical, that stop is from inside to outside installed in the unidirectional valve opening 113 on described end cap 1.The design of one-way valve 2 is conveniently 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, can also be filled with other inert gases such as helium, neon, prevent the oxidation of Sealing, increase the service life.
On described cylinder body 5 upper end portion inner side surfaces, spool push rod portion 102 tops are 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 contacting with spool further, prevents that air valve core and cylinder body upper end cap inner side from producing wearing and tearing, 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.
In described cylinder body 5, be filled with pressurized gas, 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 at the electromagnetic drive mechanism lower end cap 25 of electromagnetic drive mechanism cylinder body 28 lower ends, cover at the electromagnetic drive mechanism upper end cap 31 of electromagnetic drive mechanism cylinder body 28 upper ends, through electromagnetic drive mechanism upper end cap 31 and electromagnetic drive mechanism lower end cap 25 two ends, reach the Electromagnetic Drive axle 40 outside cylinder body; The axial region 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 used in conjunction with, the take offence piston movement of formula vibration damping device of the Electromagnetic Drive axle Sports band of electromagnetic drive mechanism, and piston compression gas also stores the kinetic energy of Electromagnetic Drive axle, produces damping Electromagnetic Drive axle is slowed down; At Electromagnetic Drive axle stroke latter end, open gas bleeder valve device, discharge the energy storing, the damping function of the degassing type vibration damping device that disappears, avoids energy storage gas in gas formula vibration damping device to cause the bounce-back of Electromagnetic Drive axle.
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; Between described insulated tension pole 32, insulating cylinder 33, vacuum bubbles 36, electromagnetic driver, interconnect.
Described vacuum bubbles 36 comprises fixed contact 37, moving contact 35, moving contact leading-off rods 34, fixed contact leading-off rods 38; The upper shaft of moving contact leading-off rods 34 and insulating cylinder is connected, and the lower end axle of insulating cylinder is connected with electromagnetic driver.
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.
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, between piston and cylinder body bottom surface, is provided with Returnning spring; Power consumption oil is housed in described cylinder body.
Electromagnetic driver and switch are used in conjunction with, when closing a floodgate, and the take offence piston movement of formula vibration damping device of the Electromagnetic Drive axle band in electromagnetic driver, piston compression gas also stores the kinetic energy of Electromagnetic Drive axle, produces damping switch movable contact is slowed down; At moving contact stroke latter end, spool clashes into cylinder body upper end portion inner side surface opens gas bleeder valve device, discharges the energy storing, and the damping function of the degassing type vibration damping device that disappears makes moving contact keep former speed motion; Thereby avoided energy storage gas in gas formula vibration damping device to cause movable contact to close bounce-back, realized 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, at stroke latter end, removes damping and do not cause coupled moving element to produce bounce-back.By being arranged on the gas bleeder valve device on gas formula vibration damping device piston, the Cheng Qian section piston compression gas storage power generation damping of being expert at, stroke latter end is opened gas bleeder valve device and is discharged energy storage gas releasing damping, avoids gas formula vibration damping device to cause moving element bounce-back.By in cylinder body upper end cap inner side, metal catch being set, improve the working life of cylinder body.By adopting gas formula vibration damping device, avoid the bounce-back of switch bubble moving contact, realize 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-the first Sealing, 9-spool, 10-spool bore, 11-compressing tablet, 12-catch, 13-the 3rd Sealing, 14-cover clamp, 15-locking nut, 16-the first groove, 17-spring, 18-damping hole, 19-the 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-the second coil, 27-motion iron core, 28-electromagnetic drive mechanism cylinder body, 30-the 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 the first screw hole, 54-cylinder body the second screw, 61-the 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-axial region, 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 being 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 two side cavity be communicated with or cut off; The interior charged pressure of cylinder body 5 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, can be also other inert gases such as helium, neon, prevents the oxidation of Sealing, increases 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, is arranged on spool bore 10, spring 17 and compressing tablet 11 on piston, and described spool 9 coordinates with spool bore 10; Spool 9 comprises the piston portion 101, the push rod portion 102 that connect in turn; 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 springs 17 are also fixed on the lower end surface of piston; Piston spool 9 in movement process protrudes from the projection of push rod portion 103 and 20 extruding of the inner side surface of cylinder body upper end portion of piston 6 upper-end surfaces and 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 moulding also have alternate manner, as welding or bolt between the piston portion 101 of spool 9 and push rod portion 102 are 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 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, the second grooves 61 and is provided with the second Sealing 19 in described the first groove 16.Sealing and groove fit are used, and make the 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; According to buffering, need to design the long-pending damping hole of suitable cross-section.The connecting passage that is 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 spool (9) on and connecting the damping hole of piston portion (101) and push rod portion (102), or described connecting passage is the damping hole being arranged 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 circumference of cylinder body upper end cap circular hole 51 is provided with in the 3rd groove 53, the three grooves 53 and is provided with the 3rd Sealing 13; Cylinder body 5 upper end caps be at least provided with 2 with cylinder body first screw hole 52 of Boring mill line parallel.The axial region of piston rod is dynamically connected by the 3rd Sealing and the sealing of cylinder body upper end cap circular hole.The lower ending opening of cylinder body 5, the lower end of cylinder side wall is at least provided with 2 cylinder body second screws 54 parallel with the axis 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, on cylinder body 5 upper end cap inner side surfaces, spool push rod portion 102 top setting-in stainless steel catch 12, prevent that air valve core from causing cap inner side, cylinder body upper end to produce wearing and tearing, extends the working life of the cylinder body of gas formula vibration damping device.
As shown in Figure 5, cover at cover clamp 14 middle parts of cylinder body 5 upper end caps and be provided with cover clamp circular hole, 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 caps.
As shown in Figure 7, described piston rod 23 comprises the engagement portion 231, piston part 232, axial region 233 and the joint 234 that connect in turn; Described engagement portion 231 and piston part 232 are through piston circular hole 4, and axial region 233 reaches outside cylinder body 10 through the cylinder body upper end cap circular hole 51 of cylinder body 10 and the cover clamp circular hole of cover clamp 14 respectively; Between that the diameter of described axial region 233 is greater than piston part 232 and engagement portion 231 or axial region 233 and piston part 232, be provided with the projection of limited piston position; 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 the unidirectional valve opening 113 of one-way valve is installed, and end cap 1 comprises the sealed department 112 that connects in turn, covers portion 111; The described lower end that covers portion 111 and be 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, in the 4th groove 114, be provided with the 4th Sealing 3, 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.Ecto-entad one-way valve 2 logical, that stop is from inside to outside installed in the unidirectional valve opening 113 on end cap 1.The design of one-way valve is conveniently filled with pressurized gas in the cylinder body of buffer, prevents high pressure gas leakage simultaneously.
Working procedure of the present invention is piston gas upper chamber in the initial progressively compression cylinder of stroke of gas formula vibration damping device, piston compression γ-ray emission resistance, and resistance is along with the increase of piston movement stroke increases fast, and damping strengthens, and realizes the deceleration to moving element.In the piston movement stroke later stage, the spool push rod portion being 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 to inferior part of the cylinder block chamber fast by spool bore, discharge the energy storing, reduce damping; When the air pressure balance of upper and lower two chambers, resistance is eliminated, and buffering finishes, and is cushioned object and can be cushioned energy storage gas bounce-back at a high speed in device.
Embodiment 2:
As shown in Figure 8, a kind of electromagnetic driver, comprises electromagnetic drive mechanism and embodiment's 1 gas formula vibration damping device 24; The gentle formula vibration damping device 24 of electromagnetic drive mechanism axially connects.Electromagnetic drive mechanism comprises electromagnetic drive mechanism cylinder body 28, cover at the electromagnetic drive mechanism lower end cap 25 of electromagnetic drive mechanism cylinder body 28 lower ends, cover at the electromagnetic drive mechanism upper end cap 31 of electromagnetic drive mechanism cylinder body 28 upper ends, through electromagnetic drive mechanism lower end cap 25 and electromagnetic drive mechanism upper end cap 31 two ends, reach the Electromagnetic Drive axle 40 outside cylinder body; The axial region 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 used in conjunction with, the take offence piston movement of formula vibration damping device of the Electromagnetic Drive axle Sports band of electromagnetic drive mechanism, and piston compression gas also stores the kinetic energy of Electromagnetic Drive axle, produces damping Electromagnetic Drive axle is slowed down; At Electromagnetic Drive axle end of travel, open gas bleeder valve device, discharge the energy storing, eliminate the damping function of buffer, avoid energy storage gas in buffer to cause the bounce-back of Electromagnetic Drive axle.
Embodiment 3:
As shown in Figure 9, a kind of switch gear, comprises embodiment 5 electromagnetic driver, a single-pole switch, and 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 describes this switch gear as an example of a single-pole switch example, 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; The upper shaft of moving contact leading-off rods 34 and insulating cylinder is connected, and the lower end axle of insulating cylinder is connected with electromagnetic driver.
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.
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, between piston and cylinder body bottom surface, is provided with Returnning spring; Power consumption oil is housed in described cylinder body.
Electromagnetic driver and single-stage switch are used in conjunction with, when closing a floodgate, the take offence piston movement of formula vibration damping device of Electromagnetic Drive axle band in electromagnetic driver, piston compression gas also stores the kinetic energy of Electromagnetic Drive axle, produces damping the moving contact of switch gear is slowed down; At moving contact stroke end, spool clashes into cylinder body upper end portion inner side surface opens gas bleeder valve device, discharges the energy storing, and eliminates the damping function of buffer, makes moving contact keep former speed motion; Thereby avoided the moving contact bounce-back that in gas formula vibration damping device, energy storage gas causes switch gear, realized switch and close a floodgate without spring.
Above example is only to 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 (23)
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 (6) being placed in cylinder; 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), make piston two side cavity be communicated with or cut off.
2. gas formula vibration damping device according to claim 1, it is characterized in that: described gas bleeder valve device (7) comprises spool (9), is arranged on spool bore (10), spring (17) and compressing tablet (11) on piston, and described spool (9) coordinates with spool bore (10); Spool (9) comprises the piston portion (101), the push rod portion (102) that connect in turn; 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; Gas bleeder valve device (7) is opened in the piston push rod portion (102) that protrudes from piston upper-end surface of spool (9) and the inner side surface (20) of cylinder body upper end portion extruding in movement process.
3. gas formula vibration damping device according to claim 2, is characterized in that, the piston portion (101) of described spool (9) and push rod portion (102) are fastenedly connected or are one-body molded, described in be fastenedly connected and connect into welding or bolt.
4. gas formula vibration damping device according to claim 2, it is characterized in that, described piston (6) is circular, the side circumference of piston (6) is provided with the first groove (16), is provided with the first Sealing (8) in described the first groove (16); The middle part of piston (6) is provided with piston circular hole (4).
5. gas formula vibration damping device according to claim 2, it is characterized in that, described piston (6) is divided into upper chamber and lower chambers cylinder body (5), is provided with the connecting passage that at least one is communicated with piston both sides chamber between described upper chamber and lower chambers.
6. gas formula vibration damping device according to claim 5, it is characterized in that, described connecting passage is the damping hole (18) being arranged on piston, or described connecting passage is for being arranged on spool (9) on and connecting the damping hole of piston portion (101) and push rod portion (102), or described connecting passage is the damping hole being arranged on piston rod (23).
7. gas formula vibration damping device according to claim 6, is characterized in that, the sectional area of described connecting passage is no more than 1% of piston area.
8. 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 circumference of cylinder body upper end cap circular hole (51) is 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.
9. 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.
10. gas formula vibration damping device according to claim 1, it is characterized in that, described piston rod (23) comprises the engagement portion (231), piston part (232), axial region (233) and the joint (234) that connect in turn; Described engagement portion (231) and piston part (232) are through piston circular hole (4), and axial region (233) reaches outside cylinder body (5) through the cylinder body upper end cap circular hole (51) of cylinder body (5) and the cover clamp circular hole (140) of cover clamp (14) respectively; Engagement portion (231) is provided with outside thread, joint (234) be provided with outside thread or internal thread.
11. gas formula vibration damping devices according to claim 1, it is characterized in that, described end cap (1) is provided with at least one the unidirectional valve opening (113) of one-way valve is installed, and end cap (1) comprises the sealed department (112) that connects in turn, covers portion (111); The described lower end that covers portion (111) and be 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), in the 4th groove (114), be provided with the 4th Sealing (3), cover portion (111) and be provided with at least 2 end cap screws (115), end cap screw (115) matches with cylinder body the second screw hole (54) that is arranged on cylinder wall lower end.
12. gas formula vibration damping devices according to claim 11, is characterized in that, ecto-entad one-way valve (2) logical, that stop is from inside to outside installed in the unidirectional valve opening (113) on described end cap (1).
13. according to the gas formula vibration damping device described in the arbitrary claim of claim 1-12, it is characterized in that, on the inner side surface of described cylinder body (5) upper end portion, spool push rod portion (102) top is provided with metal catch or cemented carbide catch (12).
14. gas formula vibration damping devices according to claim 13, is characterized in that, the material of described cylinder body (10), piston (6), cover clamp (14), end cap (1) is aluminum or aluminum alloy.
15. gas formula vibration damping devices according to claim 13, 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.
16. 1 kinds of electromagnetic drivers, comprise gas formula vibration damping device claimed in claim 1 (24), it is characterized in that: also comprise electromagnetic drive mechanism, the gentle formula vibration damping device of described electromagnetic drive mechanism (24) axially connects.
17. electromagnetic drivers according to claim 16, is characterized in that: described electromagnetic drive mechanism comprises electromagnetic drive mechanism cylinder body (28), cover at the electromagnetic drive mechanism lower end cap (25) of electromagnetic drive mechanism cylinder body (28) lower end, cover at the electromagnetic drive mechanism upper end cap (31) of 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 axial region that described Electromagnetic Drive axle (40) is positioned at cylinder body is provided with motion iron core (27), in the cavity of resorption of electromagnetic drive mechanism cylinder body (28), be provided with the second coil (26), in the epicoele of electromagnetic drive mechanism cylinder body (28), be provided with the first coil (30).
18. electromagnetic drivers according to claim 17, is characterized in that: the joint (234) of the piston rod (23) of the gentle formula vibration damping device in lower end (24) of the Electromagnetic Drive axle (40) of described electromagnetic drive mechanism connects.
19. 1 kinds of switch gears, comprise the electromagnetic driver described in claim 16, it is characterized in that: at least also comprise a single-pole switch, described electromagnetic driver is connected with single-pole switch.
20. switch gears according to claim 19, 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 interconnect.
21. switch gears according to claim 20, 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); The upper shaft of moving contact leading-off rods (34) and insulating cylinder is connected, and the lower end axle of insulating cylinder is connected with electromagnetic driver.
22. switch gears according to claim 20, it is characterized in that: the interior setting-in damper of described insulating cylinder (33) (39), the coupling shaft (41) of described damper (39) is connected with the moving contact leading-off rods (34) of vacuum bubbles.
23. switch gears according to claim 22, 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, between piston and cylinder body bottom surface, is provided with Returnning spring; Power consumption oil is housed in described cylinder body.
Priority Applications (1)
| 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 true CN103758908A (en) | 2014-04-30 |
| CN103758908B CN103758908B (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410014166.9A Active CN103758908B (en) | 2014-01-13 | 2014-01-13 | Pneumatic damping device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104879569A (en) * | 2015-04-17 | 2015-09-02 | 燕山大学 | Gas damping type shock absorption pipe clamp for hydraulic pipeline |
| CN107007381A (en) * | 2017-04-14 | 2017-08-04 | 张策 | 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 |
| CN109141111A (en) * | 2018-09-04 | 2019-01-04 | 大连理工大学 | A kind of light-gas gun air damping buffer unit |
| 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 |
| CN111313304A (en) * | 2018-12-11 | 2020-06-19 | 吴长兰 | Power switch cabinet |
| CN113048179A (en) * | 2020-09-18 | 2021-06-29 | 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 | Brake-opening air buffer of vacuum circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104879569A (en) * | 2015-04-17 | 2015-09-02 | 燕山大学 | Gas damping type shock absorption pipe clamp for hydraulic pipeline |
| CN104879569B (en) * | 2015-04-17 | 2016-10-05 | 燕山大学 | A kind of air damping fluid pressure line weakening pipe clamp |
| CN107007381A (en) * | 2017-04-14 | 2017-08-04 | 张策 | Artificial limb |
| 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 |
| CN109141111A (en) * | 2018-09-04 | 2019-01-04 | 大连理工大学 | A kind of light-gas gun air damping buffer unit |
| 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 |
| CN113048179A (en) * | 2020-09-18 | 2021-06-29 | 深圳市大通精密五金有限公司 | High-precision hydraulic oblique wedge spring device |
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|---|---|
| CN103758908B (en) | 2015-01-07 |
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