CN110081114A - A kind of hydraulic telescopic rod - Google Patents

A kind of hydraulic telescopic rod Download PDF

Info

Publication number
CN110081114A
CN110081114A CN201810073519.0A CN201810073519A CN110081114A CN 110081114 A CN110081114 A CN 110081114A CN 201810073519 A CN201810073519 A CN 201810073519A CN 110081114 A CN110081114 A CN 110081114A
Authority
CN
China
Prior art keywords
cylinder barrel
oil storage
piston
oil
hydraulic telescopic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201810073519.0A
Other languages
Chinese (zh)
Inventor
任业林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changzhou Longxiang Air Spring Co Ltd
Original Assignee
Changzhou Longxiang Air Spring Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Changzhou Longxiang Air Spring Co Ltd filed Critical Changzhou Longxiang Air Spring Co Ltd
Priority to CN201810073519.0A priority Critical patent/CN110081114A/en
Publication of CN110081114A publication Critical patent/CN110081114A/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
    • F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
    • F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
    • F16F9/19—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein with a single cylinder and of single-tube type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/3207—Constructional features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/3207—Constructional features
    • F16F9/3235—Constructional features of cylinders
    • F16F9/3242—Constructional features of cylinders of cylinder ends, e.g. caps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/36—Special sealings, including sealings or guides for piston-rods

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)
  • Actuator (AREA)

Abstract

The present invention relates to a kind of hydraulic telescopic rods, including cylinder barrel, built-up piston, piston rod, oil storage cabin, drive end bearing bracket is arranged in the forward end seal of cylinder barrel, cylinder barrel socket compatible with cylinder barrel tail end is arranged in the front end of oil storage cabin, oil groove was arranged in the tail end of the cylinder barrel, so that cylinder barrel is communicated with oil storage cabin after the cylinder barrel socket of cylinder barrel tail end insertion oil storage cabin；Cooperate in the tail end insertion cylinder barrel of piston rod with built-up piston transmission, the setting of cylinder barrel front end is stretched out in the front end of the piston rod, so that piston rod can push built-up piston to slide in cylinder barrel, by cylinder barrel internal insulation at rodless cavity and rod chamber, rodless cavity is communicated with oil storage cabin, so that oil liquid can be stored simultaneously in cylinder barrel and in oil storage cabin, the amount of storage of oil liquid is increased, conducive to the damping for improving hydraulic telescopic rod.

Description

A kind of hydraulic telescopic rod
Technical field
The present invention relates to gas spring technology field, especially a kind of hydraulic telescopic rod.
Background technique
The one kind of hydraulic telescopic rod as gas spring, the fields such as automobile, aviation, medical instrument, furniture, machine-building all Have and widely applies；Its basic structure be mainly by cylinder barrel, cylinder barrel piston and piston rod etc. form, by piston by cylinder barrel It is inside isolated into rod chamber and rodless cavity, realizes damping action using the pressure difference between two chambers；Existing hydraulic telescopic rod The limitation being limited between cylinder barrel volume and piston pole length influences damping so that the oil storage volume in cylinder barrel is insufficient.
Summary of the invention
The hydraulic telescopic rod that the technical problem to be solved in the present invention is to provide a kind of structures is simple, damping is good.
In order to solve the above technical problems, hydraulic telescopic rod provided by the invention, including cylinder barrel, built-up piston, piston rod, Drive end bearing bracket is arranged in oil storage cabin, the forward end seal of the cylinder barrel, and the front end setting of the oil storage cabin is adapted with the cylinder barrel tail end Cylinder barrel socket, oil groove was arranged in the tail end of the cylinder barrel, so that after the cylinder barrel tail end is inserted into the cylinder barrel socket of the oil storage cabin Cylinder barrel is communicated with oil storage cabin；The tail end of the piston rod is inserted into the cylinder barrel to be cooperated with built-up piston transmission, the piston rod Front end stretch out cylinder barrel front end setting, will so that the piston rod can push the built-up piston to slide in cylinder barrel The cylinder barrel internal insulation is communicated at rodless cavity and rod chamber, rodless cavity with the oil storage cabin, so that in cylinder barrel and in oil storage cabin Oil liquid can be stored simultaneously, increases the amount of storage of oil liquid, conducive to the damping for improving hydraulic telescopic rod.
Further, the built-up piston includes isolating valve, guide valve, sealing ring, is set on the external annulus of the isolating valve Outer groove is set, so as to left ring wall and right ring wall are formed on the isolating valve, the rectangular in cross-section of the outer groove, so that the sealing ring When being placed in the outer groove for sealing off the rod chamber and rodless cavity, the bottom end two sides of sealing ring and outer ring trench bottom There are gaps for corner；The first axis oilhole communicated with outer groove, the outboard end of the right ring wall are set on the left ring wall Annular oil storage tank is set on face, and the axial oilhole of setting second is for being connected to outer groove and oil storage tank on the right ring wall；The right side Radial oil groove is additionally provided in the end face outside of ring wall, which is extended to the edge of right ring wall, the guiding by oil storage tank The end face outside of valve and the right ring wall is fixedly linked, and the oil liquid in rodless cavity can be through first axis oilhole, outer groove, the second axis Enter in rod chamber to oilhole, oil storage tank, radial oil groove.
Further, the diameter of the first axis oilhole is 2 times of the second axial oil bore dia, to increase damping effect Fruit.
Further, the radial oil groove and the second axial oilhole are symmetricly set on the two sides of oil storage tank, to increase diameter To the distance between oil groove and the second axial oilhole, so that oil liquid is full of oil storage tank as far as possible.
Further, limiting slot is arranged in the middle part of the cylinder barrel, so as to protrusion is inwardly formed in the middle part of cylinder barrel, to limit combined type The axial movement stroke of piston.
Further, plug is arranged in the tail end of the containing liquid chamber, for sealing the containing liquid chamber.
The technical effect of invention: (1) hydraulic telescopic rod of the invention increases in the tail end of cylinder barrel compared with the existing technology The oil storage cabin that is connected with cylinder barrel greatly increases the oil reserve in cylinder barrel, effectively improves damping；In rodless cavity and The oil circuit being made of first axis oilhole, outer groove, the second axial oilhole, oil storage tank, radial oil groove, pole are set between rod chamber The big damping for increasing hydraulic telescopic rod, the damping of hydraulic telescopic rod can be improved in the case where not increasing cylinder barrel diameter Power, safety and stability；(2) radial oil groove is symmetricly set on the two sides of oil storage tank with the second axial oilhole, with increase radial oil groove and The distance between second axial oilhole, so that oil liquid is full of oil storage tank as far as possible in use process；(3) setting of limiting slot can To limit the axial movement stroke of built-up piston.
Detailed description of the invention
Invention is further described in detail with reference to the accompanying drawings of the specification:
Fig. 1 is the structural schematic diagram of hydraulic telescopic rod of the present invention；
Fig. 2 is the schematic diagram of the section structure after cylinder barrel, built-up piston, the piston rod assembly of hydraulic telescopic rod of the present invention；
Fig. 3 is the partial enlarged view of a-quadrant in Fig. 2；
Fig. 4 is the schematic diagram of the section structure of built-up piston of the invention；
Fig. 5 is the axial arrangement schematic diagram of isolating valve of the invention.
In figure: cylinder barrel 1, limiting slot 11 cross oil groove 12, piston rod 2, rod chamber 3, rodless cavity 4, built-up piston 5, guiding Valve 50, outer groove 51, Zuo Huanbi 52, right ring wall 53, first axis oilhole 54, the second axial oilhole 55, oil storage tank 56, radial oil Slot 57, sealing ring 6, oil storage cabin 7, cylinder barrel socket 71, plug 72 install nut 73.
Specific embodiment
As shown in Figure 1 to Figure 2, the hydraulic telescopic rod of the present embodiment includes cylinder barrel 1, built-up piston 5, piston to embodiment 1 Bar 2, oil storage cabin 7, built-up piston 5 are slidably arranged in cylinder barrel 1, so that 1 internal insulation of cylinder barrel is at rod chamber 3 and rodless cavity 4； Rodless cavity 4 is placed in the tail portion in cylinder barrel 1, and rod chamber 3 is placed in the front in cylinder barrel 1；Drive end bearing bracket is arranged in the forward end seal of cylinder barrel 1, Cylinder barrel socket 71 compatible with 1 tail end of cylinder barrel is arranged in the front end of oil storage cabin 7, and 1 tail end of cylinder barrel is inserted into the cylinder barrel socket of oil storage cabin 7 It is sealed between 1 tail end outer wall of cylinder barrel and 71 inner wall of cylinder barrel socket using sealant after 71, oil groove was arranged in the tail end of cylinder barrel 1 12, so that the rodless cavity 4 of cylinder barrel 1 is communicated with oil storage cabin 7 after the cylinder barrel socket 71 of 1 tail end of cylinder barrel insertion oil storage cabin 7, it is convenient for oil liquid It circulates between oil storage cabin 7 and cylinder barrel 1.
As shown in Figures 3 to 5, built-up piston 5 includes isolating valve, guide valve 50, sealing ring 6, the external annulus of isolating valve Upper setting outer groove 51, so as to left ring wall 52 and right ring wall 53 are formed on the isolating valve, the rectangular in cross-section of the outer groove 51, with When being placed in sealing ring 6 in outer groove 51 for sealing off rod chamber 3 and rodless cavity 4, the bottom end two sides of sealing ring 6 and outer ring There are gaps at 51 bottom comers of slot；First axis oilhole for being connected to rodless cavity 4 and outer groove 51 is set on left ring wall 52 54, annular oil storage tank 56 is set in the end face outside of right ring wall 53, the second axial oilhole 55 is also set up on right ring wall 53 for connecting Logical outer groove 51 and oil storage tank 56；Radial oil groove 57, radial oil groove 57 and the second axis are additionally provided in the end face outside of right ring wall 53 The two sides of oil storage tank 56 are symmetricly set on to oilhole 55, to increase the distance between radial oil groove 57 and second axial oilhole 55, The radial direction oil groove 57 is extended to the edge of right ring wall 53, the end face outside stationary phase of guide valve 50 and right ring wall 53 by oil storage tank 56 Even so that oil storage tank 56 and radial oil groove 57 carry out covering sealing by the end face of guide valve 50, the oil liquid into oil storage tank 56 is only capable of It is circulated by radial oil groove 57；Cooperate in the tail end insertion cylinder barrel 1 of piston rod 2 with the transmission of guide valve 50, piston rod 2 and cylinder Cooperation is sealed between 1 drive end bearing bracket of cylinder；Piston rod 2 can push built-up piston 5 to slide in cylinder barrel 1 when use, containing liquid chamber 7, nothing Oil liquid in rod cavity 4 can through first axis oilhole 54, the axial oilhole 55 of outer groove 51, second, oil storage tank 56, radial oil groove 57 into Enter rod chamber 3.
Preferably, plug 72 is arranged in the tail end of containing liquid chamber 7, for as sealing containing liquid chamber after supplementing oil liquid in containing liquid chamber 7 7。
Preferably, installation nut 73 is socketed outside the cylinder barrel socket 71 of containing liquid chamber 7, for hydraulic telescopic rod and peripheral hardware object Body is attached installation.
Preferably, the diameter of first axis oilhole 54 is 2 times of the second 55 diameter of axial oilhole, to increase damping effect Fruit.
Preferably, limiting slot 11 is arranged in the middle part of cylinder barrel 1, so as to protrusion is inwardly formed in the middle part of cylinder barrel 1, to limit combination The axial movement stroke of formula piston 5.
Obviously, the above embodiment is merely an example for clearly illustrating the present invention, and is not to of the invention The restriction of embodiment.For those of ordinary skill in the art, it can also be made on the basis of the above description Its various forms of variation or variation.There is no necessity and possibility to exhaust all the enbodiments.And these belong to this hair Bright spiritual changes and variations that derived from are still in the protection scope of this invention.

Claims (6)

1. a kind of hydraulic telescopic rod, which is characterized in that including cylinder barrel, built-up piston, piston rod, oil storage cabin, the cylinder barrel Drive end bearing bracket is arranged in forward end seal, and cylinder barrel socket compatible with the cylinder barrel tail end, the cylinder barrel is arranged in the front end of the oil storage cabin Tail end oil groove was set so that cylinder barrel is communicated with oil storage cabin after the cylinder barrel tail end is inserted into the cylinder barrel socket of the oil storage cabin； The tail end of the piston rod is inserted into the cylinder barrel to be cooperated with built-up piston transmission, and the cylinder barrel is stretched out in the front end of the piston rod Front end setting so that the piston rod can push the built-up piston to slide in cylinder barrel, by the cylinder barrel internal insulation at Rodless cavity and rod chamber, rodless cavity are communicated with the oil storage cabin.
2. hydraulic telescopic rod according to claim 1, which is characterized in that the built-up piston includes isolating valve, guiding Outer groove is arranged on the external annulus of the isolating valve in valve, sealing ring, so as to left ring wall and right ring wall are formed on the isolating valve, it should The rectangular in cross-section of outer groove, so that the sealing ring is placed in the outer groove for sealing off the rod chamber and no bar When chamber, there are gaps at the bottom end two sides of sealing ring and outer groove bottom comers；It is arranged on the left ring wall and is communicated with outer groove First axis oilhole, annular oil storage tank is set in the end face outside of the right ring wall, and setting second is axial on the right ring wall Oilhole is for being connected to outer groove and oil storage tank；Be additionally provided with radial oil groove in the end face outside of the right ring wall, the radial direction oil groove by Oil storage tank extends to the edge of right ring wall, and the end face outside of the guide valve and the right ring wall is fixedly linked.
3. hydraulic telescopic rod according to claim 2, which is characterized in that the diameter of the first axis oilhole is described the 2 times of two axial oil bore dias.
4. hydraulic telescopic rod according to claim 3, which is characterized in that the radial direction oil groove and the second axial oilhole It is symmetricly set on the two sides of oil storage tank.
5. hydraulic telescopic rod according to claim 4, which is characterized in that limiting slot is arranged in the middle part of the cylinder barrel, so that Protrusion is inwardly formed in the middle part of cylinder barrel.
6. hydraulic telescopic rod according to claim 5, which is characterized in that the close setting plug of the tail end of the containing liquid chamber.
CN201810073519.0A 2018-01-25 2018-01-25 A kind of hydraulic telescopic rod Withdrawn CN110081114A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810073519.0A CN110081114A (en) 2018-01-25 2018-01-25 A kind of hydraulic telescopic rod

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810073519.0A CN110081114A (en) 2018-01-25 2018-01-25 A kind of hydraulic telescopic rod

Publications (1)

Publication Number Publication Date
CN110081114A true CN110081114A (en) 2019-08-02

Family

ID=67412166

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810073519.0A Withdrawn CN110081114A (en) 2018-01-25 2018-01-25 A kind of hydraulic telescopic rod

Country Status (1)

Country Link
CN (1) CN110081114A (en)

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SE01 Entry into force of request for substantive examination
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Application publication date: 20190802