CN207246312U - A kind of twin-tub controllable gas spring - Google Patents

Abstract

A kind of twin-tub controllable gas spring, including piston rod, outer shell, left guide sleeve, rear head, connector, Inner cylinders, cushion collar.The endoporus of cushion collar is slided with piston rod to be connected, and the endoporus of outer cylinder and outer shell is slidably matched, and lower end is plugged between the inner surface of Inner cylinders and the outer surface of piston rod, and oil guiding hole is additionally provided with upper end.Floating piston is equipped between Inner cylinders and outer shell.Needle is equipped with the endoporus of valve body piston.The middle part indent of needle, the left and right sides are cylinder, and upper end is sealed with the lower end interval of valve body piston to be connected, and upper end is connected with piston rod packing.The outside diameter of the upper end of valve body piston is less than the internal diameter of Inner cylinders, and the via hole communicated equipped with some and needle middle part indent.The lower end of Inner cylinders is connected with support base sealing.Support base is connected with outer shell sealing.The upper end of rear head is equipped with a recess, and recess is equipped with the gas circuit connected with external air source, and gas circuit is equipped with sealing steel ball.Support base is equipped with gas port.

Description

A kind of twin-tub controllable gas spring

Technical field

It the utility model is related to a kind of twin-tub controllable gas spring, and in particular to a kind of twin-tub controllable gas spring.

Background technology

Gas spring is a kind of important mechanical device, can play support, buffering, braking, height adjusting and angular adjustment etc. Function.Gas spring is generally made of following sections:Pressure cylinder, piston rod, piston, seal guide sleeve, filler【Inert gas Or gas mixture】, control element and cylinder outer control element in cylinder【Refer to controllable gas spring】With connector etc..Principle is closed Pressure cylinder in be filled with inert gas either gas mixture make several times or tens of the pressure superatmospheric in cavity Times, the movement of piston rod is realized so as to the pressure differential produced less than the cross-sectional area of piston using the cross-sectional area of piston rod. Due to the fundamental difference in principle, gas spring has significant advantage than common spring：Speed is relatively slow, dynamic force change Less【Generally 1:Within 1.2】, be easy to control.

But current gas spring is all single cylinder gas spring, and the piston rod pop-up of gas spring is slower, and the stroke of gas spring is shorter.

The content of the invention

The main inventive purpose of the utility model, it is controllable to be to provide the twin-tub that a kind of piston rod pop-up is very fast, stroke is longer Gas spring.

Technical solution used in the utility model is：A kind of twin-tub controllable gas spring, including piston rod, outer shell, guide sleeve, after End socket, connector.Guide sleeve and rear head are installed in the top and bottom of outer shell respectively, and connector and rear head are connected.It is equipped with outer shell Inner cylinders.The upper end of Inner cylinders is equipped with cushion collar.The endoporus of cushion collar and piston rod, which slide, to be connected, the outer cylinder of upper end and outer shell it is interior Hole is slidably matched, and lower end is plugged between the inner surface of Inner cylinders and the outer surface of piston rod, is additionally provided with oil guiding hole on upper end in addition. Floating piston is equipped between Inner cylinders and outer shell.Floating piston and the sealing of Inner cylinders are connected, and are slidingly sealed and are connected with the endoporus of outer shell.Valve The upper end of body piston is connected with the lower end of piston rod, its lower end is connected with the endoporus sealing of Inner cylinders, and needle is equipped with its endoporus.Valve The middle part indent of pin, the both sides up and down of indent are cylinder, and the small cylinder in indent is connected with the cylinder round platform of downside.Valve The lower end of pin is sealed with the lower end interval of valve body piston to be connected, and the upper end is connected with piston rod packing.The upper end of valve body piston Outside diameter is less than the internal diameter of Inner cylinders, and the via hole communicated equipped with some and needle middle part indent.The lower end of Inner cylinders and support base Sealing is connected.The outer circumferential surface of support base is connected with the inner surface sealing of outer shell.The upper end of rear head is equipped with a recess, the recess Equipped with the gas circuit connected with external air source, gas circuit is equipped with sealing steel ball.Support base is equipped with set by the upper end of conducting rear head Recess and the inner surface of outer shell and the outer surface of Inner cylinders surround the gas port in space.The inner surface of outer shell, the appearance of Inner cylinders Inert gas is full of in the space that the upper side in face, the downside of floating piston and support base surrounds.It is equipped with piston rod Control-rod.The lower end of control-rod and needle touch company, and piston rod is stretched out in upper end.

Here, gas is connected by corresponding runner with compressed gas source." lower end of needle and the lower end interval of valve body piston Sealing is connected " refer to after needle moves down a distance, the lower end of needle and the lower end of valve body piston are blow-by phases Even, and after the lower end of needle resets in place upwards, the lower end of needle is that sealing is connected with the lower end of valve body piston.This practicality New, its lower end is connected with using the respective members of position during use, what control-rod was then connected with corresponding moving link.Work as valve Pin pulls to top by control-rod, and two chambers up and down of valve body piston are switched on, and 6# hydraulic transmission oils are under the influence of air pressure so that living Stopper rod can freely stretch out, and when piston rod is subject to downward pressure, then it can be pressed into cylinder body, so play slow repeatedly Punching acts on.Identical in cylinder body length, the utility model is using the firmly locked structure of inside and outside twin-tub, rear inflation, compared to adopting before this With the gas spring of single cylinder, the hard locking structure of preceding inflation there is piston rod to eject faster, the advantages of stroke is longer, is a kind of very excellent Elegant buffer unit.

Preferably, guide sleeve, floating piston, support base three and outer shell inner surface between be equipped with O-ring seal.It is floating Also O-ring seal is equipped between piston and Inner cylinders.This preferred solution, simple in structure, processing and manufacturing is easy, and cost is low, installation Easily, using effect is good.

Preferably, the downside of guide sleeve is equipped with a cavity, be equipped with outside framework oil seal in cavity, guide sleeve by outside framework oil seal with Piston rod packing is connected.This preferred solution, sealing effect is good, service life length.

Preferably, being installed with the tabletting of three pieces piston between the upper end of needle, piston rod and valve body piston and two O-shaped close Seal, two O-ring seals are interposed between two panels piston tabletting respectively.

The lower end of needle is equipped with piston tabletting after a piece of piston tabletting, an O-ring seal and one, rear piston tabletting Downside is equipped with baffle ring.Wherein, which is located at the upside of the O-ring seal, which is located at the O-ring seal Downside.The upper end of valve body piston is equipped with the macropore clearance fit of a stepped hole, rear piston tabletting and the stepped hole, the piston pressure The aperture clearance fit of piece and the stepped hole, the outside diameter of O-ring seal are more than the hole diameter of the stepped hole.The aperture of stepped hole Depth be equal to the sum of the thickness of upper piston tabletting and the diameter of O-ring seal, the depth of the macropore of stepped hole is living after being more than Fill in the thickness of tabletting.Arranged on the upper side of the lower end of needle piston tabletting upper side apart from the downside of rear piston tabletting Distance, less than the top side piston tabletting being fixedly arranged between upper end, piston rod and the valve body piston three of needle upper side with The smaller of the length of the distance between downside of lower side piston tabletting and the upper end cylinder of needle between the two.This is excellent Scheme is selected, rational in infrastructure, sealing effect is good, and service life effect is good.

Preferably, an O-ring seal is equipped between the lower end of valve body piston and the endoporus of Inner cylinders, under valve body piston Hold and be connected with the endoporus of Inner cylinders by O-ring seal sealing.

Preferably, the endoporus of Inner cylinders is stretched into the upper end of support base, O is equipped between the upper end of support base and the endoporus of Inner cylinders Type sealing ring, is sealed by the O-ring seal between support base and Inner cylinders and is connected.This preferred solution, rational in infrastructure, sealing effect Good, service life effect is good.

Preferably, connector and rear head are threadedly coupled；Connector is additionally provided with the threaded hole being connected with external member.Piston rod Upper end end be equipped with the screw thread that is connected with external member.This preferred solution, easy to installing and using for the utility model.

Preferably, the upper end of outer shell bends inwards, the diameter of bore of bending part is more than the outside diameter of piston rod, guide sleeve it is upper The inner side face paste of side and the bending part connects.This preferred solution, simple in structure, use reliability is high.

In conclusion the beneficial effects of the utility model are：In cylinder body length under the same conditions, using inside and outside twin-tub, Firmly locked structure is inflated afterwards, compared to the gas spring of single cylinder, the hard locking structure of inflation is used before this there is piston rod to eject more It hurry up, the advantages of stroke is longer.

Brief description of the drawings

Fig. 1：The structure diagram of the utility model；

In figure：Piston rod 1, screw thread 1.1, control-rod 2, guide sleeve 3, outside framework oil seal 4, cushion collar 5, floating piston 6 are O-shaped close Seal 7, O-ring seal 8, piston tabletting 9, O-ring seal 10, valve body piston 11, needle 12, rear piston tabletting 13, rear head 14, seal steel ball 15, connector 16, threaded hole 16.1, support base 17, Inner cylinders 18, outer shell 19, O-ring seal 20, inert gas 21。

Embodiment

Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.

As shown in Figure 1, the utility model includes piston rod 1, outer shell 19, guide sleeve 3, rear head 14, connector 16.3 He of guide sleeve Rear head 14 is installed in the top and bottom of outer shell 19 respectively, and connector 16 and rear head 14 are connected.Inner cylinders 18 are equipped with outer shell 19. The upper end of Inner cylinders 18 is equipped with cushion collar 5.The endoporus of cushion collar 5 is slided with piston rod 1 to be connected, the outer cylinder of the upper end of cushion collar 5 Be slidably matched with the endoporus of outer shell 19, the lower end of cushion collar 5 be plugged on Inner cylinders 18 inner surface and piston rod 1 outer surface it Between, in addition oil guiding hole is additionally provided with the upper end of cushion collar 5.Floating piston 6 is equipped between Inner cylinders 18 and outer shell 19.Floating piston 6 It is connected with the sealing of Inner cylinders 18, floating piston 6 is slidingly sealed with the endoporus of outer shell 19 to be connected.The upper end of valve body piston 11 and piston rod 1 lower end is connected, and the lower end of valve body piston 11 is connected with the endoporus sealing of Inner cylinders 18, and needle is equipped with the endoporus of valve body piston 11 12.The middle part indent of needle 12, the both sides up and down of indent are cylinder, the cylinder round platform of small cylinder and downside in indent Connection.The lower end of needle 12 is sealed with the lower end interval of valve body piston 11 to be connected, and the upper end of needle 12 and piston rod 1 seal phase Even.The outside diameter of the upper end of valve body piston 11 is less than the internal diameter of Inner cylinders 18, and communicated equipped with some and needle 12 middle part indent Via hole.The lower end of Inner cylinders 18 is connected with the sealing of support base 17.The outer circumferential surface of support base 17 and the inner surface sealing phase of outer shell 19 Even.The upper end of rear head 14 is equipped with a recess, and the recess is equipped with the gas circuit connected with external air source, and gas circuit is equipped with sealing steel Pearl 15.Support base 17 is equipped with the appearance of the inner surface and Inner cylinders 18 of the recess and outer shell 19 set by the upper end of conducting rear head 14 Face surrounds the gas port in space.The inner surface of outer shell 19, the outer surface of Inner cylinders 18, the downside of floating piston 6 and support base Inert gas 21 is full of in the space that 17 upper side surrounds.Control-rod 2 is equipped with piston rod 1.The lower end of control-rod 2 and Needle 12, which touches, to be connected, and piston rod 1 is stretched out in the upper end of control-rod 2.

Preferably, guide sleeve 3, floating piston 6,17 three of support base and outer shell 19 inner surface between be equipped with it is O-shaped close Seal 7, the inner surface of outer shell 19 are connected by O-ring seal 7 with guide sleeve 3, floating piston 6, the sealing of support base 17.Floating piston Also O-ring seal 8 is equipped between 6 and Inner cylinders 18, is sealed and is connected by O-ring seal 8 between floating piston 6 and Inner cylinders 18.This Embodiment, both are equipped with an O-ring seal 7 between the inner surface of outer shell 19 for guide sleeve 3, support base 17, floating piston 6 and outside Two O-ring seals 7 are equipped between the inner surface of cylinder 19.And O-ring seal 8 set between floating piston 6 and Inner cylinders 18 is also For two.In addition, the downside of guide sleeve 3 is equipped with a cavity, outside framework oil seal 4 is equipped with cavity, guide sleeve 3 passes through 4 He of outside framework oil seal The sealing of piston rod 1 is connected.Three pieces piston tabletting 9 and two are installed between the upper end of needle 12, piston rod 1 and valve body piston 11 O-ring seal 10, two O-ring seals 10 are interposed between two panels piston tabletting 9 respectively, and the upper end of needle 12 passes through two O Type sealing ring 10 is connected with the sealing of piston rod 1.The lower end of needle 12 is equipped with a piece of 9, O-ring seals 10 and one of piston tabletting Piston tabletting 13 after a, the downside of rear piston tabletting 13 is equipped with baffle ring；Wherein, which is located at the O-ring seal 10 Upside, the rear piston tabletting 13 are located at the downside of the O-ring seal 10；The upper end of valve body piston 11 is equipped with a stepped hole, rear living Fill in the aperture clearance fit of tabletting 13 and the macropore clearance fit of the stepped hole, the piston tabletting 9 and the stepped hole, O-shaped sealing The outside diameter of circle 10 is more than the hole diameter of the stepped hole；The depth of the aperture of stepped hole is equal to the thickness and O of upper piston tabletting The sum of diameter of type sealing ring 10, the depth of the macropore of stepped hole are more than the thickness of rear piston tabletting 13；Under needle 12 9 upper side of piston tabletting at end apart from the distance between downside of rear piston tabletting 13, less than be fixedly arranged on needle 12 upper end, The upper side of top side piston tabletting 9 between 11 three of piston rod 1 and valve body piston and the downside of lower side piston tabletting 9 The distance between smaller with the length of the upper end cylinder of needle 12 between the two.The lower end of valve body piston 11 and Inner cylinders 18 Endoporus between be equipped with an O-ring seal 20, the lower end of valve body piston 11 and the endoporus of Inner cylinders 18 pass through the O-ring seal 20 Sealing is connected.The endoporus of Inner cylinders 18 is stretched into the upper end of support base 17, and O is equipped between the upper end of support base 17 and the endoporus of Inner cylinders 18 Type sealing ring 20, is sealed by the O-ring seal 20 between support base 17 and Inner cylinders 18 and is connected.

Preferably, connector 16 and rear head 14 are threadedly coupled；Connector 16 is additionally provided with the threaded hole being connected with external member 16.1.The upper end end of piston rod 1 is equipped with the screw thread 1.1 being connected with external member.Specific structural details, because being simple technique, This will not be repeated here.

Preferably, the upper end of outer shell 19 bends inwards, the diameter of bore of bending part is more than the outside diameter of piston rod 1, guide sleeve 3 Upper side and the inner side face paste of the bending part connect.

The specific embodiment of the above is only the preferable embodiment of the utility model, and not limits this practicality with this New specific implementation structure and practical range.In fact, according to shape described in the utility model, structure and purpose of design Some equivalent changes can be made.Therefore, it is all according to made by shape described in the utility model, structure and purpose of design Some equivalence changes ought to be all contained in the scope of protection of the utility model, namely these equivalence changes should all be subject to this reality With new protection.

Claims (10)

1. a kind of twin-tub controllable gas spring, including piston rod（1）, outer shell（19）, guide sleeve（3）, rear head（14）, connector（16）； Guide sleeve（3）And rear head（14）Outer shell is installed in respectively（19）Upper end, lower end, connector（16）And rear head（14）It is connected；Its It is characterized in：Outer shell（19）It is interior to be equipped with Inner cylinders（18）；Inner cylinders（18）Upper end be equipped with cushion collar（5）；Cushion collar（5）Endoporus and work Stopper rod（1）Slide and be connected, the outer cylinder and outer shell of upper end（19）Endoporus be slidably matched, lower end is plugged on Inner cylinders（18）Interior table Face and piston rod（1）Outer surface between, oil guiding hole is additionally provided with upper end in addition；Inner cylinders（18）And outer shell（19）Between be equipped with it is floating Piston（6）；Floating piston（6）With Inner cylinders（18）Sealing is connected, and outer shell（19）Endoporus be slidingly sealed it is connected；Valve body piston （11）Upper end and piston rod（1）Lower end be connected, its lower end and Inner cylinders（18）Endoporus sealing be connected, valve is equipped with its endoporus Pin（12）；Needle（12）Middle part indent, the both sides up and down of indent are cylinder, the cylinder of small cylinder and downside in indent Body round platform connects；Needle（12）Lower end and valve body piston（11）Lower end interval seal be connected, the upper end and piston rod（1）It is close Envelope is connected；The outside diameter of the upper end of valve body piston is less than the internal diameter with Inner cylinders, and is equipped with some and needle（12）Middle part indent phase Logical via hole；The lower end of Inner cylinders and support base（17）Sealing is connected, the outer circumferential surface of support base and the inner surface sealing phase of outer shell Even；The upper end of rear head is equipped with a recess, and the recess is equipped with the gas circuit connected with external air source, and gas circuit is equipped with sealing steel ball （15）；The outer surface that support base is equipped with the inner surface and Inner cylinders of the recess and outer shell set by the upper end of conducting rear head is surrounded The gas port in space；The inner surface of outer shell, the outer surface of Inner cylinders, the upper side of the downside of floating piston and support base enclose Into space in be full of inert gas（21）；Control-rod is equipped with piston rod（2）；The lower end of control-rod and needle touch company, upper end Stretch out piston rod.

2. a kind of twin-tub controllable gas spring according to claim 1, it is characterized in that：Guide sleeve（3）, floating piston（6）, support Seat（17）Three and outer shell（19）Inner surface between be equipped with O-ring seal（7）；Floating piston（6）With Inner cylinders（18）Between Equipped with O-ring seal（8）.

3. a kind of twin-tub controllable gas spring according to claim 1, it is characterized in that：Guide sleeve（3）Downside be equipped with one it is recessed Chamber, cavity is interior to be equipped with outside framework oil seal（4）, guide sleeve（3）Pass through outside framework oil seal（4）And piston rod（1）Sealing is connected.

4. a kind of twin-tub controllable gas spring according to claim 1, it is characterized in that：Needle（12）Upper end, piston rod（1） And valve body piston（11）Between be installed with three pieces piston tabletting（9）With two O-ring seals（10）, two O-ring seals（10） Two panels piston tabletting is interposed in respectively（9）Between.

5. a kind of twin-tub controllable gas spring according to claim 4, it is characterized in that：Needle（12）Lower end be equipped with a piece of work Fill in tabletting（9）, an O-ring seal（10）With one after piston tabletting（13）, rear piston tabletting（13）Downside be equipped with baffle ring； Wherein, the piston tabletting（9）It is located at the O-ring seal（10）Upside, the rear piston tabletting（13）It is located at the O-ring seal （10）Downside；Valve body piston（11）Lower end be equipped with a stepped hole；Piston tabletting afterwards（13）With the big interporal lacuna of the stepped hole Coordinate, the piston tabletting on the upside of it（9）With the aperture clearance fit of the stepped hole, O-ring seal（10）Outside diameter be more than the rank The hole diameter in terraced hole；The depth of the aperture of stepped hole is equal to the thickness and O-ring seal of upper piston tabletting（10）Diameter The sum of, the depth of the macropore of stepped hole is more than rear piston tabletting（13）Thickness；Arranged on needle（12）Lower end piston tabletting （9）Upper side is apart from rear piston tabletting（13）The distance between downside, less than being fixedly arranged on needle（12）Upper end, piston rod （1）And valve body piston（11）Top side piston tabletting between three（9）Upper side and lower side piston tabletting（9）Downside The distance between face and needle（12）Upper end cylinder length smaller between the two.

6. a kind of twin-tub controllable gas spring according to claim 1, it is characterized in that：Valve body piston（11）Lower end and Inner cylinders （18）Endoporus between be equipped with an O-ring seal（20）, valve body piston（11）Lower end and Inner cylinders（18）Endoporus pass through the O Type sealing ring（20）Sealing is connected.

7. a kind of twin-tub controllable gas spring according to claim 1, it is characterized in that：Support base（17）Upper end stretch into Inner cylinders （18）Endoporus, support base（17）Upper end and Inner cylinders（18）Endoporus between be equipped with O-ring seal（20）, support base（17）With Inner cylinders（18）Between pass through the O-ring seal（20）Sealing is connected.

8. a kind of twin-tub controllable gas spring according to claim 1-7 any one, it is characterized in that：Connector（16）With rear envelope Head（14）It is threadedly coupled；Connector（16）It is additionally provided with the threaded hole being connected with external member（16.1）.

9. a kind of twin-tub controllable gas spring according to claim 1-7 any one, it is characterized in that：Piston rod（1）It is upper End end is equipped with the screw thread being connected with external member.

10. a kind of twin-tub controllable gas spring according to claim 1-7 any one, it is characterized in that：Outer shell（19）It is upper End bends inwards, and the diameter of bore of bending part is more than piston rod（1）Outside diameter, guide sleeve（3）Upper side and the bending part it is interior Side patch connects.