CN108930749A - A kind of overload self-locking device for gas spring - Google Patents

A kind of overload self-locking device for gas spring Download PDF

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Publication number
CN108930749A
CN108930749A CN201810724418.5A CN201810724418A CN108930749A CN 108930749 A CN108930749 A CN 108930749A CN 201810724418 A CN201810724418 A CN 201810724418A CN 108930749 A CN108930749 A CN 108930749A
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CN
China
Prior art keywords
piston
gas
spring
self
locking
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Application number
CN201810724418.5A
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Chinese (zh)
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CN108930749B (en
Inventor
黎三妹
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深圳鑫安满金融服务有限公司
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Priority to CN201810724418.5A priority Critical patent/CN108930749B/en
Publication of CN108930749A publication Critical patent/CN108930749A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/06Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/06Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
    • F16F9/066Units characterised by the partition, baffle or like element
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/3207Constructional features
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/34Special valve constructions; Shape or construction of throttling passages
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/36Special sealings, including sealings or guides for piston-rods
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/56Means for adjusting the length of, or for locking, the spring or damper, e.g. at the end of the stroke

Abstract

The invention discloses a kind of overload self-locking devices for gas spring, including inflator, one end of the inflator is equipped with pedestal, control box is installed at the position of inflator side on the pedestal, the inside of the control box is equipped with SCR electric controller and pressure calculator, the SCR electric controller is located at the side of pressure calculator, the inside of the inflator offers inner cavity and mounting groove, the inner cavity is located at the side of mounting groove, and the inside of inner cavity is sequentially installed with self-locking ring by one end to the other end, valve seat, first piston and second piston, the present invention is provided with self-locking ring, thermal expansion circle, heating coil, wedge-shaped rubber and gas volume sensor, when adjusting the initial value of gas spring, gas volume sensor on the outer wall of first piston side detects gas volume contained by the second air cavity inside, and it controls Pressure calculator inside box calculates the maximum load power that gas can bear according to the initial volume of gas.

Description

A kind of overload self-locking device for gas spring
Technical field
The invention belongs to gas spring technical fields, and in particular to a kind of overload self-locking device for gas spring.
Background technique
Gas spring is to be filled with compressed gas in the container sealed at one, realizes its spring using the compressibility of gas Effect, the rigidity of this spring is variable, because of quantitative gas gas when acting on the load increase on spring, in container Pressure increases, and the rigidity of spring increases, conversely, when load decreases, the air pressure decline in spring, rigidity reduces.
But there is certain load limit in use in existing gas spring, according to internal gas body The size of long-pending difference, load limit is also different, and if gas spring for a long time overload use be easy to cause damage, influence spring Service life, in addition existing gas spring be easy to cause gas to leak during changing internal compressed gas, influences gas The leakproofness of spring as a whole, and on the one hand piston be easy to cause piston wear, separately during the motion with cylinder inner wall friction On the one hand the mobile accuracy of piston is influenced.
Summary of the invention
The purpose of the present invention is to provide a kind of overload self-locking devices for gas spring, are made with solving existing overload With the problem of leakproofness is insufficient when be easy to causeing gas spring damage, changing internal compressed gas and be easy to cause piston wear.
To achieve the above object, the invention provides the following technical scheme: a kind of overload self-locking device for gas spring, Including inflator, one end of the inflator is equipped with pedestal, is located at the position of inflator side on the pedestal and is equipped with control box, The inside of the control box is equipped with SCR electric controller and pressure calculator, and the SCR electric controller is located at calculation of pressure The side of device, the inside of the inflator offer inner cavity and mounting groove, and the inner cavity is located at the side of mounting groove, and inner cavity is interior Portion is sequentially installed with self-locking ring, valve seat, first piston and second piston by one end to the other end, pacifies on the outer wall of the self-locking ring Thermal expansion circle is installed equipped with insulation ring, and on the inner wall of self-locking ring, heating coil, institute are connected between the self-locking ring and thermal expansion circle Thermal expansion circle is stated far from wedge-shaped rubber is equipped on the side outer wall of self-locking ring, gas is installed on the side outer wall of the first piston Body volume sensor.
Preferably, the inner cavity includes the first air cavity, liquid oil pocket, the second air cavity and divides air cavity, first air cavity position Between self-locking ring and second piston, between second piston and first piston, second air cavity is located at the liquid oil pocket It is described that air cavity is divided to be located at side of the valve seat far from the second air cavity between first piston and valve seat.
Preferably, sealing ring is installed on the side outer wall of the valve seat, and the inside of valve seat is equipped with sealing valve, it is described The side outer wall of sealing valve is welded with valve rod, and the valve rod runs through sealing ring, and valve rod is welded with end far from one end of sealing valve Plate, the end plate are located at the inside of mounting groove, and the mounting groove is internally located at the position of end plate side and is equipped with the first spring, The end plate is welded with push rod far from the side of the first spring.
Preferably, the inside of the pedestal is equipped with second spring and divides gas button, the second spring be located at divide gas by The side of button, the chassis interior, which is located at the position of second spring two sides, is mounted on magnetic conductive board, the two sides of the magnetic conductive board Be separately installed with the first magnetic patch and the second magnetic patch, first magnetic patch and the second magnetic patch respectively with push rod and gas button is divided to connect.
Preferably, piston rod is welded on the side outer wall of the second piston, and second piston is far from piston rod side The middle position of outer wall offers oil diverting port, and the second piston is adjacent to offering rolling on the two sides outer wall of oil diverting port Slot, the side inner wall of the slot rolling offers immersion oil hole, and the inside of slot rolling is equipped with mounting rack, passes through on the mounting rack and turns Axis is rotatably connected to ball, and the piston rod runs through self-locking ring, and the middle position of piston rod movable end offers pouring orifice, The side of the pouring orifice is connected with oil inlet pipe, and the one end of the oil inlet pipe far from pouring orifice is connected by check valve and oil diverting port It connects.
Preferably, the inflator, which is internally located at the position of inner cavity two sides, offers gas-distributing pipe, and the two of the gas-distributing pipe End respectively with the first air cavity and air cavity is divided to connect, the gas volume sensor and pressure calculator electric connection, the pressure Calculator and heating coil are electrically connected with SCR electric controller, and the SCR electric controller and external power supply are electrically connected.
Compared with the prior art, the present invention has the following beneficial effects:
(1) present invention is provided with self-locking ring, thermal expansion circle, heating coil, wedge-shaped rubber and gas volume sensor, adjusts gas When the initial value of spring, the gas volume sensor on the outer wall of first piston side is to gas volume contained by the second air cavity inside It is detected, and controls the maximum load power that the pressure calculator inside box can bear gas according to the initial volume of gas When being calculated, and stored, and loaded, load objects push second piston by piston rod, and second piston then passes through liquid Oil pocket pushes first piston, and first piston compresses the second air cavity, and becomes gas volume and pressure inside the second air cavity Change, the calculated pressure value of pressure calculator institute is also changing at this time, and the pressure value caused by the load objects is greater than maximum negative When carrying power, heating is opened up by the heating coil inside SCR electric controller control self-locking ring, heating coil heating temperature increases, so that The thermal expansion circle of thermal expansion circle expanded by heating, expansion pushes wedge-shaped rubber close to piston rod, and passes through wedge-shaped rubber extrusion piston bar, So that piston rod is in the lock state under the extruding of wedge-shaped rubber, gas spring at this time completes self-locking operation, so that spring Holding state is only existed in, and cannot achieve the function of spring, until after unloading load and gas spring, by pressing a point gas button It can make the pressure change of the second air cavity, heating coil stops heating, thermal expansion circle retraction, so that piston rod still can be free after pressure change Activity, single unit system calculate automatically and incude the loading range of gas spring, and can according to the difference of the initial value of spring and from The dynamic maximum load power for changing spring, so that self-locking device is suitable for the different use state of the gas spring, so that guaranteeing should The safety in utilization of gas spring avoids causing gas spring air pressure inside excessively high due to use because overloading, effectively reduces this The damage probability of gas spring improves the service life of gas spring, additionally by wedge-shaped rubber locking piston rod, and realizes gas Body spring it is self-locking, on the one hand effectively reduce damage of the Mechanical locking features to piston rod outer wall, on the other hand pass through wedge shape The friction of rubber improves degree of stability when self-locking device locking.
(2) present invention, which is provided with, divides gas button, the first magnetic patch, the second magnetic patch, magnetic conductive board, push rod, end plate and valve rod, adjusts When spring initial value, pushes and divide gas button on pedestal, it is mobile to chassis interior that gas button is divided under the action of thrust, and compress The second spring of side drives the second magnetic patch mobile by connecting rod in the process of moving with time-division gas button, and the second magnetic patch exists Moved on magnetic conductive board, by magnetic force transmitting drive the first magnetic patch synchronizing moving of the magnetic conductive board other side, and the first magnetic patch is moving Drive push rod mobile in dynamic process, push rod pushes valve rod mobile further through end plate, simultaneously also by endplate compression mounting groove The first spring, valve rod drives the sealing valve inside valve seat mobile when moving so that sealing valve is far from valve seat, at this time valve seat with It is in the conductive state between sealing valve, so that the first air cavity, air cavity and the second air cavity is divided to be on state, can pass through Mobile piston rod carries out the change of gas spring initial value, when the second air cavity initial gas reduces, the initial value of gas spring It reduces, while the bearing capacity of gas spring also accordingly reduces, otherwise the second air cavity initial gas increases, spring initial value It increases, and the adjustment device of whole initial value is oriented to by magnetic force and is completed, and divides external to gas button by magnetic patch and magnetic conductive board It is separated with internal air distribution structure, so that external adjustment structure had not only kept mutually being driven with internal adjustment structure, but also It realizes sealed separation, to effectively guarantee the leakproofness inside gas spring, avoids causing bullet during dividing controlled atmosphere whole Spring gas leakage.
(3) present invention is provided with liquid oil pocket, second piston, slot rolling, ball and immersion oil hole, in the inner cavity inside gas spring It is provided with liquid oil pocket, on the one hand the inside of liquid oil pocket plays the role of supporting damping full of liquid oil, on the other hand play piston profit Sliding effect, second piston generates friction when inner cavity is moved between inner cavity, and is driven in slot rolling by friction Ball roll, the outer wall of ball is in close contact with interior cavity wall and slot rolling inner wall respectively, guarantees that ball begins during scrolling It is in sealing state eventually, while the liquid oil in liquid oil pocket can also be immersed inside slot rolling by the immersion oil hole of second piston side, it is right Ball is lubricated, and is guaranteed the sensitivity of ball, is on the one hand improved the sensitivity of second piston movement, on the other hand avoid ball Damage probability that is stuck and increasing second piston, improves the service life of second piston.
Detailed description of the invention
Fig. 1 is front view of the invention;
Fig. 2 is the side view of self-locking ring of the present invention;
Fig. 3 is enlarged drawing at A of the invention;
Fig. 4 is the structural schematic diagram of pedestal of the present invention;
Fig. 5 is enlarged drawing at B of the invention;
Fig. 6 is the structural schematic diagram of second piston of the present invention;
Fig. 7 is circuit block diagram of the invention;
In figure: 1- piston rod, 2- self-locking ring, the first air cavity of 3-, the inner cavity 4-, 5- liquid oil pocket, 6- gas volume sensor, 7- Second air cavity, 8- sealing valve, 9- valve rod, 10- control box, 11-SCR electric controller, 12- pedestal, 13- pressure calculator, 14- Point air cavity, 15- sealing ring, 16- valve seat, 17- first piston, 18- second piston, 19- gas-distributing pipe, 20- inflator, 21- insulation ring, 22- thermal expansion circle, 23- heating coil, 24- wedge-shaped rubber, the first spring of 25-, 26- mounting groove, 27- end plate, 28- push rod, 29- second Spring, 30- divide gas button, the first magnetic patch of 31-, the second magnetic patch of 32-, 33- magnetic conductive board, 34- oil inlet pipe, 35- pouring orifice, 36- rolling Slot, 37- ball, 38- mounting rack, 39- immersion oil hole, 40- oil diverting port, 41- check valve.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
It please refers to shown in Fig. 1-Fig. 7, the invention provides the following technical scheme: a kind of self-locking dress of overload for gas spring It sets, including inflator 20, one end of inflator 20 is equipped with pedestal 12, is located at the position of 20 side of inflator on pedestal 12 and is equipped with control The inside of box 10 processed, control box 10 is equipped with SCR electric controller 11 and pressure calculator 13, and SCR electric controller 11 is located at The side of pressure calculator 13, the inside of inflator 20 offer inner cavity 4 and mounting groove 26, and inner cavity 4 is located at the side of mounting groove 26, And the inside of inner cavity 4 is sequentially installed with self-locking ring 2, valve seat 16, first piston 17 and second piston 18 by one end to the other end, from Insulation ring 21 is installed on the outer wall of lock ring 2, and thermal expansion circle 22 is installed on the inner wall of self-locking ring 2, self-locking ring 2 and thermal expansion circle 22 Between be connected with heating coil 23, thermal expansion circle 22 is far from being equipped with wedge-shaped rubber 24, first piston 17 on the side outer wall of self-locking ring 2 Side outer wall on gas volume sensor 6 is installed, the performance expanded with heat and contract with cold by thermal expansion circle 22, which is realized, locks piston rod 1 With the operation of release, to realize the locking and unlock of gas spring, gas volume sensor 6 uses HA80-N2 nitrogen volume Detection sensor.
In the present invention, it is preferred that inner cavity 4 includes the first air cavity 3, liquid oil pocket 5, the second air cavity 7 and divides air cavity 14, and first Air cavity 3 is between self-locking ring 2 and second piston 18, and liquid oil pocket 5 is between second piston 18 and first piston 17, the second gas Chamber 7 divides air cavity 14 to be located at side of the valve seat 16 far from the second air cavity 7, passes through first between first piston 17 and valve seat 16 Air cavity 3, the second air cavity 7 and the sub-gas operation for dividing the mutual conduction of air cavity 14 to realize gas, to change the initial of gas spring Value and loading range.
In the present invention, it is preferred that sealing ring 15 is installed, and the inside of valve seat 16 is equipped on the side outer wall of valve seat 16 Sealing valve 8, the side outer wall of sealing valve 8 are welded with valve rod 9, and valve rod 9 runs through sealing ring 15, and valve rod 9 far from sealing valve 8 one End is welded with end plate 27, and end plate 27 is located at the inside of mounting groove 26, and mounting groove 26, which is internally located at the position of 27 side of end plate, pacifies Equipped with the first spring 25, end plate 27 is welded with push rod 28 far from the side of the first spring 25, when valve seat 16 is opened, the first spring 25 In compressive state, and the retraction of sealing valve 8 can be realized by the rebound of the first spring 25, to realize the sealing of valve seat 16.
In the present invention, it is preferred that the inside of pedestal 12 is equipped with second spring 29 and divides gas button 30, and second spring 29 In the side for dividing gas button 30, pedestal 12 is internally located at the position of 29 two sides of second spring and is mounted on magnetic conductive board 33, magnetic conduction The two sides of plate 33 are separately installed with the first magnetic patch 31 and the second magnetic patch 32, the first magnetic patch 31 and the second magnetic patch 32 respectively with push rod 28 With divide gas button 30 to connect, the close of the first magnetic patch 31 and the second magnetic patch 32 is not only able to achieve by the conducting of magnetic conductive board 33 and is connected It connects, but also is able to achieve sealing against each other for the first magnetic patch 31 and the second magnetic patch 32.
In the present invention, it is preferred that be welded with piston rod 1 on the side outer wall of second piston 18, and second piston 18 is separate The middle position of 1 side outer wall of piston rod offers oil diverting port 40, two sides outer wall of the second piston 18 adjacent to oil diverting port 40 On offer slot rolling 36, the side inner wall of slot rolling 36 offers immersion oil hole 39, and the inside of slot rolling 36 is equipped with mounting rack 38, Ball 37 is rotatably connected to by shaft on mounting rack 38, piston rod 1 runs through self-locking ring 2, and the interposition of 1 movable end of piston rod The place of setting offers pouring orifice 35, and the side of pouring orifice 35 is connected with oil inlet pipe 34, and the one end of oil inlet pipe 34 far from pouring orifice 35 is logical It crosses check valve 41 to connect with oil diverting port 40, by the rolling of ball 37, be effectively reduced between 4 inner wall of second piston 18 and inner cavity Friction, to reduce the abrasion of second piston 18.
In the present invention, it is preferred that inflator 20, which is internally located at the position of 4 two sides of inner cavity, offers gas-distributing pipe 19, divides gas The both ends of pipe 19 respectively with the first air cavity 3 and air cavity 14 is divided to connect, gas volume sensor 6 electrically connects with pressure calculator 13 It connects, pressure calculator 13 and heating coil 23 are electrically connected with SCR electric controller 11, SCR electric controller 11 and external electricity Source is electrically connected, and is realized the first air cavity 3 by gas-distributing pipe 19 and is divided the conducting of air cavity 14, is easy to implement sub-gas operation.
The working principle of the invention and process for using: use the gas spring when, first to the initial value of gas spring into Row is adjusted, and when adjustment spring initial value, is pushed and is divided gas button 30 on pedestal 12, divide gas button 30 bottom of under the action of thrust 12 inside of seat is mobile, and compresses the second spring 29 of side, is driven in the process of moving by connecting rod with time-division gas button 30 Second magnetic patch 32 is mobile, and the second magnetic patch 32 moves on magnetic conductive board 33, by magnetic force transmitting drive 33 other side of magnetic conductive board First magnetic patch, 31 synchronizing moving, and the first magnetic patch 31 drives push rod 28 mobile in the process of moving, push rod 28 is further through end plate 27 push valve rod 9 mobile, compress the first spring 25 in mounting groove 26 simultaneously also by end plate 27, valve rod 9 drives when moving Sealing valve 8 inside valve seat 16 is mobile, so that sealing valve 8 is between valve seat 16 and sealing valve 8 at this time far from valve seat 16 State, so that the first air cavity 3, air cavity 14 and the second air cavity 7 is divided to be on state, at this time to pushing inside inflator 20 Piston rod 1, piston rod 1 push second piston 18 close to first piston 17, and first piston 17 is pushed to compress in the second air cavity 7 Gas enter so that compressed gas inside the second air cavity 7 passes through valve seat 16 and divide air cavity 14, and by dividing the inflow of air cavity 14 to divide gas It in pipe 19, is introduced gas into inside the first air cavity 3 through gas-distributing pipe 19,7 inside initial gas of the second air cavity is reduced, then gas spring Initial value reduce, while the bearing capacity of gas spring also accordingly reduces, and pulls piston rod 1 to far from 20 direction of inflator When, compressed gas is redirected back into inside the second air cavity 7 by the first air cavity 3, and the initial value of gas spring increases at this time, corresponding gas The bearing capacity of body spring also increases, gas body during carrying out initial value adjustment, on 17 side outer wall of first piston Product sensor 6 detects gas volume contained by 7 inside of the second air cavity, and controls pressure calculator 13 inside box 10 The maximum load power that gas can bear is calculated according to the initial volume of gas, and is stored, when completion gas spring Initial value adjustment after, release divides gas button 30, and spring as a whole is installed on designated position by pedestal 12, then will load Object is installed on the movable end of piston rod 1, presses piston rod 1 by the weight of load objects itself, piston rod 1 pushes second Piston 18, and the second air cavity 7 is compressed by first piston 17, the second air cavity 7 at this time is in sealing state, and gas is in pressure It acts on and generates certain volume compression, load objects are played with certain support buffer function, reduce the shake on load objects Dynamic, while compressing the second air cavity 7, gas volume and pressure inside the second air cavity 7 change first piston 17, simultaneously The calculated pressure values of the institute of pressure calculator 13 are also changing, and the pressure value caused by the load objects is greater than maximum load power When, the heating coil 23 inside self-locking ring 2 is controlled by SCR electric controller 11 and opens up heating, 23 heating temperature of heating coil increases, makes 22 expanded by heating of thermal expansion circle is obtained, 2 holding position of self-locking ring and size are constant, so that thermal expansion circle 22 is to close to the one of wedge-shaped rubber 24 Side expansion, while pushing wedge-shaped rubber 24 close to piston rod 1, and by 24 extrusion piston bar 1 of wedge-shaped rubber, so that piston rod 1 is in the lock state under the extruding of wedge-shaped rubber 24, and gas spring at this time completes self-locking operation, so that spring only exists in branch Support state, and cannot achieve the function of spring can make the by pressing a point gas button 30 until after unloading load and gas spring The pressure change of two air cavitys 7, heating coil 23 stops heating after pressure change, and thermal expansion circle 22 bounces back, so that piston rod 1 still can be free On the one hand activity is played the role of supporting damping, on the other hand plays work in addition full of liquid oil in the liquid oil pocket 5 inside inner cavity 4 The effect of lubrication is filled in, second piston 18 generates friction in 4 internal motion of inner cavity between 4 inside of inner cavity, and passes through friction band Ball 37 in dynamic slot rolling 36 rolls, and the outer wall of ball 37 is in close contact with 4 inner wall of inner cavity and 36 inner wall of slot rolling respectively, guarantees rolling Pearl 37 is in sealing state always during scrolling, while the liquid oil in liquid oil pocket 5 can also pass through 18 side of second piston Immersion oil hole 39 is immersed inside slot rolling 36, is lubricated to ball 37, is guaranteed the sensitivity of ball 37, is on the one hand improved second piston The sensitivity of 18 movements, on the other hand avoids the damage probability that is stuck and increasing second piston 18 of ball 37, improves second piston 18 service life, and the liquid oil in liquid oil pocket 5 can be filled by the pouring orifice 35 of 1 movable end of piston rod, liquid oil passes through Pouring orifice 35, oil inlet pipe 34 and check valve 41 flow to oil diverting port 40, immerse liquid oil pocket 5 by oil diverting port 40.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (6)

1. a kind of overload self-locking device for gas spring, including inflator (20), it is characterised in that: the one of the inflator (20) End is equipped with pedestal (12), is equipped with control box (10) on the pedestal (12) at the position of inflator (20) side, described The inside of control box (10) is equipped with SCR electric controller (11) and pressure calculator (13), the SCR electric controller (11) Positioned at the side of pressure calculator (13), the inside of the inflator (20) offers inner cavity (4) and mounting groove (26), the inner cavity (4) it is located at the side of mounting groove (26), and the inside of inner cavity (4) is sequentially installed with self-locking ring (2), valve seat by one end to the other end (16), first piston (17) and second piston (18) are equipped with insulation ring (21) on the outer wall of the self-locking ring (2), and self-locking It is equipped on the inner wall of ring (2) thermal expansion circle (22), is connected with heating coil (23) between the self-locking ring (2) and thermal expansion circle (22), It is equipped with wedge-shaped rubber (24) on the side outer wall of the thermal expansion circle (22) separate self-locking ring (2), the first piston (17) Gas volume sensor (6) are installed on the outer wall of side.
2. a kind of overload self-locking device for gas spring according to claim 1, it is characterised in that: the inner cavity (4) include the first air cavity (3), liquid oil pocket (5), the second air cavity (7) and divide air cavity (14), first air cavity (3) be located at from Between lock ring (2) and second piston (18), the liquid oil pocket (5) is located between second piston (18) and first piston (17), institute The second air cavity (7) is stated to be located between first piston (17) and valve seat (16), it is described that air cavity (14) is divided to be located at valve seat (16) far from the The side of two air cavitys (7).
3. a kind of overload self-locking device for gas spring according to claim 2, it is characterised in that: the valve seat (16) it is equipped on side outer wall sealing ring (15), and the inside of valve seat (16) is equipped with sealing valve (8), the sealing valve (8) side outer wall is welded with valve rod (9), and the valve rod (9) runs through sealing ring (15), and valve rod (9) is far from sealing valve (8) One end is welded with end plate (27), and the end plate (27) is located at the inside of mounting groove (26), and the mounting groove (26) is internally located at end It is equipped with the first spring (25) at the position of plate (27) side, the end plate (27) is welded with far from the side of the first spring (25) Push rod (28).
4. a kind of overload self-locking device for gas spring according to claim 1, it is characterised in that: the pedestal (12) inside is equipped with second spring (29) and divides gas button (30), and the second spring (29) is located at and divides gas button (30) Side, the pedestal (12), which is internally located at the position of second spring (29) two sides, is mounted on magnetic conductive board (33), the magnetic conduction The two sides of plate (33) are separately installed with the first magnetic patch (31) and the second magnetic patch (32), first magnetic patch (31) and the second magnetic patch (32) respectively with push rod (28) and gas button (30) is divided to connect.
5. a kind of overload self-locking device for gas spring according to claim 2, it is characterised in that: described second is living It fills in and is welded with piston rod (1) on the side outer wall of (18), and interposition of the second piston (18) far from piston rod (1) side outer wall The place of setting offers oil diverting port (40), and the second piston (18) is adjacent to offering slot rolling on the two sides outer wall of oil diverting port (40) (36), the side inner wall of the slot rolling (36) offers immersion oil hole (39), and the inside of slot rolling (36) is equipped with mounting rack (38), It is rotatably connected to ball (37) on the mounting rack (38) by shaft, the piston rod (1) runs through self-locking ring (2), and piston The middle position of bar (1) movable end offers pouring orifice (35), and the side of the pouring orifice (35) is connected with oil inlet pipe (34), The one end of the oil inlet pipe (34) far from pouring orifice (35) is connect by check valve (41) with oil diverting port (40).
6. a kind of overload self-locking device for gas spring according to claim 1, it is characterised in that: the inflator (20) be internally located at the position of inner cavity (4) two sides and offer gas-distributing pipe (19), the both ends of the gas-distributing pipe (19) respectively with First air cavity (3) and air cavity (14) is divided to connect, the gas volume sensor (6) and pressure calculator (13) are electrically connected, institute It states pressure calculator (13) and heating coil (23) to be electrically connected with SCR electric controller (11), the SCR electric controller (11) it is electrically connected with external power supply.
CN201810724418.5A 2018-07-04 2018-07-04 Overload self-locking device for gas spring Active CN108930749B (en)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3979109A (en) * 1974-10-14 1976-09-07 Tokico Ltd. Locking device in gas spring
JPS55119242A (en) * 1979-03-09 1980-09-12 Tokico Ltd Gas spring with built-in lock
JPS56116937A (en) * 1980-02-20 1981-09-14 Tokico Ltd Gas spring equipped with locking mechanism
JPS56167941A (en) * 1980-05-28 1981-12-23 Kayaba Ind Co Ltd Lockup device for gas spring
US5435530A (en) * 1991-04-24 1995-07-25 Stromsholmens Mekaniska Verkstad Ab Gas spring which after compression has a time delayed return to its original length
JPH1182606A (en) * 1997-09-02 1999-03-26 Unisia Jecs Corp Hydraulic buffer
EP1387109A1 (en) * 2002-07-30 2004-02-04 Stabilus GmbH Gas spring
DE10329468B3 (en) * 2003-07-01 2004-11-18 Stabilus Gmbh Gas spring for chair support column has sliding piston dividing pressure cylinder into 2 working chambers one of which is divided into 2 pressure chambers by sliding separation piston
KR20150071333A (en) * 2013-12-18 2015-06-26 현대자동차주식회사 Gas spring with variable surface with bimetal switch
KR101571674B1 (en) * 2014-08-12 2015-11-26 현대자동차주식회사 Gas lifter

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3979109A (en) * 1974-10-14 1976-09-07 Tokico Ltd. Locking device in gas spring
JPS55119242A (en) * 1979-03-09 1980-09-12 Tokico Ltd Gas spring with built-in lock
JPS56116937A (en) * 1980-02-20 1981-09-14 Tokico Ltd Gas spring equipped with locking mechanism
JPS56167941A (en) * 1980-05-28 1981-12-23 Kayaba Ind Co Ltd Lockup device for gas spring
US5435530A (en) * 1991-04-24 1995-07-25 Stromsholmens Mekaniska Verkstad Ab Gas spring which after compression has a time delayed return to its original length
JPH1182606A (en) * 1997-09-02 1999-03-26 Unisia Jecs Corp Hydraulic buffer
EP1387109A1 (en) * 2002-07-30 2004-02-04 Stabilus GmbH Gas spring
DE10329468B3 (en) * 2003-07-01 2004-11-18 Stabilus Gmbh Gas spring for chair support column has sliding piston dividing pressure cylinder into 2 working chambers one of which is divided into 2 pressure chambers by sliding separation piston
KR20150071333A (en) * 2013-12-18 2015-06-26 현대자동차주식회사 Gas spring with variable surface with bimetal switch
KR101571674B1 (en) * 2014-08-12 2015-11-26 현대자동차주식회사 Gas lifter

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