CN103711826B - Energy-dissipating device is impacted to dynamic formula - Google Patents
Energy-dissipating device is impacted to dynamic formula Download PDFInfo
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- CN103711826B CN103711826B CN201310745368.6A CN201310745368A CN103711826B CN 103711826 B CN103711826 B CN 103711826B CN 201310745368 A CN201310745368 A CN 201310745368A CN 103711826 B CN103711826 B CN 103711826B
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Abstract
The present invention is open a kind of to dynamic formula impact energy-dissipating device, arrange transmission channels and the power consumption passage of series winding connection, and the section area of transmission channels input end is greater than the section area of the path input that consumes energy between equipment and apparatus carriers; Transmission channels top is connected with equipment, and power consumption passage bottom is connected with apparatus carriers; Be provided with the first medium transmitting impact energy in described transmission channels, be provided with the second medium for consuming impact energy in power consumption passage, the compressibility of described first medium is less than the compressibility of second medium.When system is not subject to percussion, the not original anti-vibration performance of influential system.When system is subject to percussion, Fast Compression also discharges the mode dissipative part impact energy of gas, promotes the shock resistance of the equipment of being isolated with this.
Description
Technical field
The present invention relates to the impact-resistant isolation device of a kind of power plant and precision electronic device, particularly under a kind of non-contact explosive event, a kind of power plant to dynamic formula impact energy-dissipating device.
Background technique
The shock resistance of equipment when impacted by external macro-energy of boats and ships and mechanized equipment and installation or its delivery is extremely important vitality index in ship platform system and mechanized equipment system, and therefore its shock resistance problem is all shown great attention in countries in the world.Usually select the good equipment of shock resistance when boats and ships and mechanized equipment, equipment de-sign and adopt defense of resistance to impact measure to ensure the Security of the equipment in boats and ships, mechanized equipment to equipment, use vibration isolator to be exactly a kind of surge guard measure preferably.
For common vibration isolator, because its natural frequency is lower, under certain percussion, larger relative displacement response can be produced, the deformability of the external piping of equipment may have been exceeded, even exceeded the ultimate deformation ability of vibration isolator itself.At present, in order to improve the shock resistance of vibration isolator, mounting limit device in vibrating isolation system usually, although this kind of method can reduce relative displacement amplitude, can cause the secondary pulse problem of system.Particularly when equipment suffers thump effect, the acceleration that equipment bears and relative displacement amplitude all very little, adopt vibration isolator and snubber all can not meet the demands, now need special dissipative cell, absorb a large amount of impact energys, the impact energy being delivered to equipment is significantly reduced, thus ensures that equipment Acceleration and relative displacement response all can meet the requirement of boats and ships, machinery.
Summary of the invention
For the deficiency existed in background technique, the object of the present invention is to provide and a kind of impact energy-dissipating device to dynamic formula, when boats and ships, machinery suffer extraneous macro-energy impact loading, this device can fast dissipation impact energy.
For achieving the above object, one designed by the present invention impacts energy-dissipating device to dynamic formula, it is characterized in that: the series winding transmission channels be communicated with and the passage that consumes energy are set between equipment and apparatus carriers, and the section area of transmission channels input end is greater than the section area of power consumption path input; Transmission channels top is connected with equipment, and power consumption passage bottom is connected with apparatus carriers; Be provided with the first medium transmitting impact energy in described transmission channels, be provided with the second medium for consuming impact energy in power consumption passage, the compressibility of described first medium is less than the compressibility of second medium.
Because transmission channels is connected with apparatus carriers, when being subject to impacting, impact energy is passed to power consumption passage by transmission channels by apparatus carriers, impact energy is consumed by the second medium in power consumption passage; Section area due to transmission channels input end is greater than the section area of power consumption path input, when producing the displacement of a section less in transmission channels, larger displacement will be produced in power consumption passage, thus reach when being subject to impacting, between apparatus carriers and equipment, only have small size relative displacement.
As a kind of preferred version, described transmission channels is formed primarily of oil hydraulic cylinder and connecting tube, and described power consumption passage is formed primarily of cylinder; Comprise oil hydraulic cylinder and cylinder, it is characterized in that: the axis of described cylinder and the axes normal of described oil hydraulic cylinder, described cylinder is communicated with described oil hydraulic cylinder by connecting tube; Described connecting tube is the output terminal of transmission channels, and its one end goes out to hold with the input of the cylinder of the input end as the passage that consumes energy and is connected, and the other end is connected with the sidewall of the oil hydraulic cylinder of the input end as transmission channels; Described cylinder two ends are equipped with pneumatic piston, are provided with a fluid-operated piston in oil hydraulic cylinder; Described pneumatic piston piston rod stretches in described connecting tube; Hydraulic oil is full of in described oil hydraulic cylinder and described connecting tube; Described cylinder (2) sidewall is provided with at least one damping hole or described cylinder sidewall is provided with relief opening, and described relief opening outlet port is provided with the switch opening and closing relief opening; Be full of first medium in described oil hydraulic cylinder and described connecting tube, described first medium is hydraulic oil; Be full of second medium in described cylinder, described second medium is gas.
Preferably, the diameter of described fluid-operated piston is greater than the diameter of described pneumatic piston piston rod.Like this, more effectively impact is resisted.
Preferably, described connecting tube is provided with unloading port, when pneumatic piston is positioned at the limit position at cylinder two ends, and the distance l=h-m on described unloading port's distance pneumatic piston piston rod top, described h is the range of pneumatic piston, and the span of described m is 3 ~ 5mm.
Preferred further, place of described unloading port is provided with emptying one-way valve.Like this, prevent the hydraulic oil of discharging from unloading port from turning back in connecting tube.
Preferably, described connecting tube comprises line part and interconnecting part; Described line part is connected with the input end of cylinder, and described line part is rigid material; Described interconnecting part is communicated with from described oil hydraulic cylinder sidewall with described oil hydraulic cylinder.
Preferred further, described interconnecting part is also rigid material, and forms U-shaped connecting tube with line part.
Preferably, described cylinder input end is provided with the first vent, and described first vent is by cylinder interior and ft connection, and like this, when preventing pneumatic piston pressurized air, cylinder side produces vacuum phenomenon; The input end of described oil hydraulic cylinder is provided with the second vent, and described second vent is inner and ft connection by oil hydraulic cylinder, like this, prevents when fluid-operated piston moves upward, and prevents oil hydraulic cylinder cavity of resorption from producing vacuum phenomenon.
Preferably, described oil hydraulic cylinder sidewall is provided with filler opening.Like this, by filler opening replenisher force feed, and get back to initial position by replenisher force feed promotion fluid-operated piston.
Preferably, the end face of described pneumatic piston is provided with buffer stopper.Like this, effectively can cushion the impact force that pneumatic piston is subject to when being subject to greater impact, being convenient to the reset of pneumatic piston simultaneously.
Preferably, be tightly connected between described pneumatic piston piston rod and described cylinder block or described connecting tube inwall.
The symmetric type that the present invention proposes impacts energy-dissipating device working principle:
When being subject to percussion, the hydraulic oil that fluid-operated piston promotes in oil hydraulic cylinder and in the U-shaped connecting tube in both sides moves upward, hydraulic oil promotes pneumatic piston from cylinder both sides simultaneously to the air work in cylinder, gas in cylinder is compressed, interior energy increases, pressure raises, when the pressure in cylinder reaches a certain limit value, the solenoid valve opened as switch is discharged pressurized gas fast, due to the compression of fluid-operated piston can be come from the major part of pressurized gas, and the kinetic energy of fluid-operated piston comes from impulsive load, therefore, this course of action has dissipated a large amount of impact energys.
The invention has the beneficial effects as follows: when (1) system is not subject to percussion, the vertical unrestricted motion of energy-dissipating device is impacted to dynamic formula, the not original anti-vibration performance of influential system.(2), when system is subject to percussion, energy-dissipating device is impacted by Fast Compression to dynamic formula and discharges the mode dissipative part impact energy of gas, promote the shock resistance of the equipment of being isolated with this.Like this, the impulsive load being passed to the ship equipment be connected with this device is less than the intrinsic impact resistance of ship equipment, thus guarantees equipment safety operation.The present invention, not only for the impact energy-dissipating device of boats and ships, also can be applicable to the energy-dissipating device in any machinery needing shock resistance, antidetonation, and the present invention can also be used for the energy dissipation apparatus of building.
Because transmission channels is connected with apparatus carriers, when being subject to impacting, impact energy is passed to power consumption passage by transmission channels by apparatus carriers, impact energy is consumed by the second medium in power consumption passage; Section area due to transmission channels input end is greater than the section area of power consumption path input, when producing the displacement of a section less in transmission channels, larger displacement will be produced in power consumption passage, thus reach when being subject to impacting, only have small size relative displacement can consume a large amount of impacts or vibration energy between apparatus carriers and equipment, make to be passed to the impact on shock resistance, shock-resistant arrangement, vibration energy greatly reduces, thus reach the object of shock resistance, antidetonation.
Accompanying drawing explanation
Fig. 1 is schematic perspective view of the present invention
Fig. 2 is three-dimensional 1/4 cross-sectional schematic of the present invention
Fig. 3 be plan view of the present invention cut open schematic diagram
In figure: cylinder body 1, cylinder 2, oil hydraulic cylinder 3, connecting tube 4, oil hydraulic cylinder cylinder cap 5, cylinder head 6, wherein: pneumatic piston 2.1, pneumatic piston piston rod 2.11, buffer stopper 2.12, relief opening 2.2, fluid-operated piston 3.1, filler opening 3.2, unloading port 4.1, line part 4.2, interconnecting part 4.3, second vent 5.1, first vent 6.1.
Embodiment
A kind of to dynamic formula impact energy-dissipating device, it is characterized in that: transmission channels and power consumption passage that series winding connection is set between equipment and apparatus carriers, and the section area of transmission channels input end is greater than the section area of the path input that consumes energy; Transmission channels top is connected with equipment, and power consumption passage bottom is connected with apparatus carriers; Be provided with the first medium transmitting impact energy in described transmission channels, be provided with the second medium for consuming impact energy in power consumption passage, the compressibility of described first medium is less than the compressibility of second medium.Because transmission channels is connected with apparatus carriers, when being subject to impacting, impact energy is passed to power consumption passage by transmission channels by apparatus carriers, impact energy is consumed by the second medium in power consumption passage; Section area due to transmission channels input end is greater than the section area of power consumption path input, when producing the displacement of a section less in transmission channels, larger displacement will be produced in power consumption passage, thus reach when being subject to impacting, only have small size relative displacement can consume a large amount of impacts or vibration energy between apparatus carriers and equipment, make to be passed to the impact on shock resistance, shock-resistant arrangement, vibration energy greatly reduces, thus reach the object of shock resistance, antidetonation.
Performance of the present invention is described in detail below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, energy-dissipating device is impacted to dynamic formula, comprise cylinder 2 and oil hydraulic cylinder 3, the axis of the axes normal oil hydraulic cylinder 3 of described cylinder 2, and the cylinder body of the cylinder body of cylinder 2 and oil hydraulic cylinder 3 one-body moldedly can be combined into cylinder body 1, also namely the end face of hydraulic cylinder body is a side of cylinder block, and described cylinder 2 is communicated with described oil hydraulic cylinder 3 by connecting tube 4; The two ends of described cylinder 2 are equipped with pneumatic piston 2.1, and also namely described cylinder 2 is provided with two input ends; A fluid-operated piston 3.1 is provided with in described oil hydraulic cylinder 3; Described connecting tube 4 one end is connected with the input end of described cylinder 2, and the other end is connected with the sidewall of described oil hydraulic cylinder 3; Described pneumatic piston piston rod 2.11 stretches in described connecting tube 4; Hydraulic oil is full of in described oil hydraulic cylinder 3 and described connecting tube 4; The sidewall of described cylinder 2 is provided with relief opening 2.2, and the outlet port of described relief opening 2.2 is provided with the switch opening and closing this relief opening 2.2, and described switch can be solenoid valve (in figure, this switch is and illustrates).Described relief opening 2.2 is generally the through hole of diameter 10 ~ 30 millimeters.
In above-described embodiment, damping hole can be adopted to replace relief opening 2.2 and be located at relief opening 2.2 outlet port for opening the switch of described relief opening 2.2, described damping hole is aperture or micropore, when gas is discharged from cylinder interior by damping hole, gas flow rate will be made to slow down, flow reduces, and plays damping function, thus also can reach the effect of dissipation impact energy.Certain described damping hole can arrange multiple as required.Usually, described damping hole can select 1 ~ 20 millimeter.Meanwhile, the length of damping hole can be increased, such as, be not more than the prolongation pipeline of this damping hole diameter to strengthen damping in the connection of the outlet port of described damping hole, thus improve the effect of dissipation impact energy.
Described transmission channels is formed primarily of oil hydraulic cylinder 3 and connecting tube 4, and described power consumption passage is formed primarily of cylinder; The output terminal of transmission channels is described connecting tube 4, and the input end of power consumption passage is the input end connection of cylinder 2, and the input end of transmission channels is oil hydraulic cylinder 3; Be full of first medium in described oil hydraulic cylinder 3 and described connecting tube 4, described first medium is hydraulic oil; Be full of second medium in described cylinder 2, described second medium is gas.
Between described fluid-operated piston 3.1 with liquid oil hydraulic cylinder 3 inwall, slipper seal is connected, employing be embed lattice at described fluid-operated piston 3.1 sidewall to enclose, described oil hydraulic cylinder 3 one end is provided with oil hydraulic cylinder cylinder cap 5; Between described pneumatic piston 2.1 with described cylinder 2 inwall, slipper seal is connected also is adopt to embed lattice to enclose at pneumatic piston 2.1 inwall, and the two ends of described cylinder 2 are equipped with cylinder head 6.These are all that those of ordinary skill in the art are very easy to expect and understand in conjunction with prior art, belong to conventional prior art means, as space is limited with describe concise and to the point, when not producing the deviation in understanding, the present invention is not all described in detail.
Preferably, the diameter of described fluid-operated piston 3.1 is greater than the diameter of described pneumatic piston 2.1.Like this, more effectively impact is resisted.
Preferably, described connecting tube 4 is provided with unloading port 4.1, and described unloading port 4.1, near the joint of connecting tube 4 with cylinder 2 input end, that is to say near the joint with cylinder head side 6.Place of described unloading port 4.1 is provided with emptying one-way valve (all not shown in figure).Like this, prevent the hydraulic oil of discharging from unloading port 4.1 from turning back in connecting tube 4.
Preferably, described connecting tube 4 comprises and line part 4.2 and interconnecting part 4.3; Described line part 4.2 one end is connected with the input end of cylinder 2, that is to say to be connected with cylinder head 6, and the other end is connected with described interconnecting part 4.3, and described line part 4.2 is rigid material; Described interconnecting part 4.3 is communicated with from the sidewall of described oil hydraulic cylinder 3 with described oil hydraulic cylinder 3.Preferred further, described interconnecting part 4.3 is also rigid material, and forms U-shaped connecting tube 4 with line part.
Preferably, described cylinder input end that is to say that cylinder head 6 is provided with the first vent 6.1, and described first vent 6.1 is by pneumatic cavity 2 and ft connection, and like this, when preventing pneumatic piston 2.1 pressurized air, pneumatic cavity 2 side produces vacuum phenomenon; Described oil hydraulic cylinder 3 input end that is to say that oil hydraulic cylinder cylinder cap 5 is provided with the second vent 5.1, and described second vent 5.1, by hydraulic pressure cavity 3 and ft connection, like this, prevents when fluid-operated piston 3.1 moves upward, and oil hydraulic cylinder 3 cavity of resorption produces vacuum phenomenon.
Preferably, described oil hydraulic cylinder 3 sidewall is provided with filler opening 3.2, like this, by filler opening 3.2 replenisher force feed, and gets back to initial position by replenisher force feed promotion fluid-operated piston 3.1.Be provided with filler opening one-way valve (not shown) at described filler opening 3.2 place, like this, the backflow of the hydraulic oil supplemented can be prevented.
Preferably, the end face of described pneumatic piston 2.1 is provided with buffer stopper 2.12, like this, effectively can cushion the impact force that pneumatic piston 2.1 is subject to, being convenient to the reset of pneumatic piston 2.1 simultaneously when being subject to greater impact.
Preferably, be tightly connected between described pneumatic piston piston rod 2.11 and described connecting tube 4 inwall, sealing connects employing: be embedded with this special envelope at described connecting tube 4 inwall, realize the sealing of pneumatic piston piston rod 2.11 and connecting tube 4 inwall, thus isolated hydraulic oil enters in cylinder 2.
As another kind of preferred version: be tightly connected between the inwall that described pneumatic piston piston rod 2.11 and cylinder block that is to say cylinder head 6, sealing connects employing: be embedded with this special envelope at the inwall of described cylinder head 6, realize the sealing of pneumatic piston piston rod 2.11 and cylinder head 6 inwall, thus isolated hydraulic oil enters in cylinder 2.
Certainly, the above-mentioned hydraulic oil two schemes entered in cylinder 2 that prevents can select one to adopt, and also can adopt simultaneously.
The layout of unloading port 4.1 as shown in Figure 3, when pneumatic piston 2.1 is positioned at the limit position at cylinder two ends, described unloading port 4.1 is the range of pneumatic piston apart from the distance l=h-m on pneumatic piston piston rod 2.11 top, described h, and the span of described m is 3 ~ 5mm.
Preferably, described impact by energy-dissipating device dynamic formula is also provided with oil storage cylinder (be in figure and illustrate), for storing the hydraulic oil that unloading port 4.1 discharges.
The end face of cylinder 2 cylinder body dynamic formula being impacted to energy-dissipating device be that is to say the upper-end surface of cylinder body 1 connects and be isolated equipment, the piston rod of fluid-operated piston 3.1 is connected with hull basis.In working procedure, the acceleration that hull basis produces measured in real time by the acceleration transducer be arranged on hull basis, and be transferred to control circuit by radio module, when the hull base acceleration value that acceleration transducer is measured is less than a certain limit value, think that hull is not subject to impact loading, system is in isolating technique state.Now, solenoid valve opened by control circuit, and cylinder 2 is in communication with the outside, the unrestricted motion of two pneumatic pistons 2.1, and fluid-operated piston 3.1 promotes hydraulic oil unrestricted motion, produces active force hardly, not the anti-vibration performance of influential system.The vibration amplitude of general now system is 2 ~ 3mm, very little, has an impact hardly to shock resistance effect of the present invention.
When the hull acceleration that acceleration transducer is measured is greater than a certain limit value, think that hull is subject to impact loading, control circuit output order, rapid shut electromagnetic valve, system enters shock resistance state.Now, fluid-operated piston 3.1 promotes hydraulic oil and moves upward, hydraulic oil promotes two pneumatic piston 2.1 horizontal relative motions, air work in two pneumatic piston 2.1 compression cylinders 2, when in cylinder 2, gas pressure is gone up to a certain limit value, control circuit exports control signal, opens solenoid valve and discharges compressed gas fast, namely to release portion impact energy outside isolated system.After solenoid valve is opened, cylinder 2 internal air pressure declines rapidly, pneumatic piston 2.1 is rapid movement under the promotion of hydraulic oil, when the piston rod end face motion of pneumatic piston exceedes (H-m) mm, hydraulic oil is discharged rapidly by unloading port 4.1, and the hydraulic oil pressure now in oil hydraulic cylinder 3 and connecting tube 4 pipeline unloads rapidly, and fluid-operated piston 3 is in no-load motion state, two pneumatic pistons 2.1 contact in cylinder 2, no longer continue motion.System relies on vibration isolator to proceed shock resistance afterwards, due to the part impact energy that dissipated to dynamic formula impact energy-dissipating device, therefore improves the impact resistance of system.Meanwhile, the diameter due to fluid-operated piston 3.1 is greater than the diameter of pneumatic piston 2.1, and after fluid-operated piston 3.1 moves up a segment distance, the relative displacement of two pneumatic pistons 2.1, by being greater than the distance of above-mentioned fluid-operated piston 3.1, so more effectively resists impact.
When adopting damping hole dissipation impact energy, be utilize damping function to the impact energy that dissipates, other are indistinction also, therefore is not repeated.
Need after percussion terminates to reset to the present invention, pneumatic piston 2.1 is by inflating cylinder 2 at the external tapping place of solenoid valve, and because buffer stopper 2.12 makes to there is gap between pneumatic piston 2.1, like this, the reset of pneumatic piston 2.1 is convenient; Fluid-operated piston 3 is resetted by the filler opening 3.2 replenisher force feed in oil hydraulic cylinder 3 side.
Although describe in background technique of the present invention be all boats and ships technical field within the scope of, but, the present invention is not only for the impact energy-dissipating device of boats and ships, also can be applicable to the energy-dissipating device in any machinery needing shock resistance, antidetonation, and the present invention can also be used for the energy dissipation apparatus of building.
Principle is adopted to be all the passages utilizing two section area different, in the passage that section area is less, the medium that can consume impact energy is set, thus realize when being subject to impact, vibrations, produce a small size displacement between the equipment be connected with the present invention, apparatus carriers or two articles and just can consume a large amount of impacts, vibration energy, thus the impact endurance test shock energy be delivered on shock resistance and shock-resistant arrangement is reduced greatly, thus reach the object of shock resistance, antidetonation.
Claims (9)
1. an energy-dissipating device is impacted to dynamic formula, it is characterized in that: the series winding transmission channels be communicated with and the passage that consumes energy are set between equipment and apparatus carriers, and the section area of transmission channels input end is greater than the section area of power consumption path input; Transmission channels top is connected with equipment, and power consumption passage bottom is connected with apparatus carriers; Be provided with the first medium transmitting impact energy in described transmission channels, be provided with the second medium for consuming impact energy in power consumption passage, the compressibility of described first medium is less than the compressibility of second medium; Described transmission channels is formed primarily of oil hydraulic cylinder (3) and connecting tube (4), and described power consumption passage is formed primarily of cylinder; The axis of described cylinder (2) and the axes normal of described oil hydraulic cylinder (3), described cylinder (2) is communicated with described oil hydraulic cylinder (3) by connecting tube (4); The output terminal that described connecting tube (4) is transmission channels, its one end is connected with the input end of the cylinder (2) of the input end as the passage that consumes energy, and the other end is connected with the sidewall of the oil hydraulic cylinder (3) of the input end as transmission channels; Described cylinder (2) two ends are equipped with pneumatic piston (2.1), are provided with a fluid-operated piston (3.1) in oil hydraulic cylinder (3); Described pneumatic piston piston rod (2.11) is stretched in described connecting tube (4); Described cylinder (2) sidewall is provided with at least one damping hole or described cylinder (2) sidewall is provided with relief opening (2.2), and described relief opening (2.2) outlet port is provided with the switch opening and closing relief opening; Be full of first medium in described oil hydraulic cylinder (3) and described connecting tube (4), described first medium is hydraulic oil; Described cylinder is full of second medium in (2), and described second medium is gas.
2. according to claim 1 to dynamic formula impact energy-dissipating device, it is characterized in that: the diameter of described fluid-operated piston (3.1) is greater than the diameter of described pneumatic piston piston rod (2.11).
3. according to claim 1 to dynamic formula impact energy-dissipating device, it is characterized in that: described connecting tube (4) is provided with unloading port (4.1), when pneumatic piston (2.1) is positioned at the limit position at cylinder two ends, the distance l=h-m on described unloading port (4.1) distance pneumatic piston piston rod (2.11) top, described h is the range of pneumatic piston (2.1), and the span of described m is 3 ~ 5mm.
4. according to claim 1 to dynamic formula impact energy-dissipating device, it is characterized in that: described connecting tube (4) comprises and line part (4.2) and interconnecting part (4.3); Described line part (4.2) is connected with the input end of cylinder, and described line part (4.2) is rigid material; Described interconnecting part (4.3) is communicated with from described oil hydraulic cylinder (3) sidewall with described oil hydraulic cylinder (3).
5. according to claim 4 to dynamic formula impact energy-dissipating device, it is characterized in that: described interconnecting part (4.3) is also rigid material, and form U-shaped connecting tube (4) with line part (4.2).
6. according to claim 1 to dynamic formula impact energy-dissipating device, it is characterized in that: described cylinder (2) input end is provided with the first vent (6.1), described first vent (6.1) is inner and ft connection by cylinder (2); Described oil hydraulic cylinder (3) input end is provided with the second vent (5.1), and described second vent (5.1) is inner and ft connection by oil hydraulic cylinder (3).
7. according to claim 1 to dynamic formula impact energy-dissipating device, it is characterized in that: described oil hydraulic cylinder (3) sidewall is provided with filler opening (3.2).
8. according to claim 1 to dynamic formula impact energy-dissipating device, it is characterized in that: the end face of described pneumatic piston (2.1) is provided with buffer stopper (2.12).
9. according to claim 1 energy-dissipating device is impacted to dynamic formula, it is characterized in that: be tightly connected between described pneumatic piston piston rod (2.11) and cylinder block or described connecting tube (4) inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310745368.6A CN103711826B (en) | 2013-12-30 | 2013-12-30 | Energy-dissipating device is impacted to dynamic formula |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310745368.6A CN103711826B (en) | 2013-12-30 | 2013-12-30 | Energy-dissipating device is impacted to dynamic formula |
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| CN103711826A CN103711826A (en) | 2014-04-09 |
| CN103711826B true CN103711826B (en) | 2016-02-17 |
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| CN201310745368.6A Expired - Fee Related CN103711826B (en) | 2013-12-30 | 2013-12-30 | Energy-dissipating device is impacted to dynamic formula |
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| CN112392542B (en) * | 2020-11-09 | 2022-10-11 | 太原理工大学 | Goaf roof large-area caving hurricane hazard eliminating device based on deceleration and energy reduction |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1692227A (en) * | 1927-03-07 | 1928-11-20 | John C Segeler | Shock absorber and the like |
| DE1131053B (en) * | 1959-08-25 | 1962-06-07 | Electro Hydraulics Ltd | Hydraulic shock absorber, especially for use in aircraft |
| WO2002095260A1 (en) * | 2001-05-24 | 2002-11-28 | K Service Srl | Gas shock absorber for vehicles |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020121416A1 (en) * | 2001-02-19 | 2002-09-05 | Yohei Katayama | Hydraulic cylinder apparatus |
| US7219881B2 (en) * | 2002-08-28 | 2007-05-22 | Denk Engineering Gmbh | Shock absorber |
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2013
- 2013-12-30 CN CN201310745368.6A patent/CN103711826B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1692227A (en) * | 1927-03-07 | 1928-11-20 | John C Segeler | Shock absorber and the like |
| DE1131053B (en) * | 1959-08-25 | 1962-06-07 | Electro Hydraulics Ltd | Hydraulic shock absorber, especially for use in aircraft |
| WO2002095260A1 (en) * | 2001-05-24 | 2002-11-28 | K Service Srl | Gas shock absorber for vehicles |
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