CN209510778U - The hydraulic cylinder of the two-way dual mechanical locking in any position can be achieved - Google Patents
The hydraulic cylinder of the two-way dual mechanical locking in any position can be achieved Download PDFInfo
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- CN209510778U CN209510778U CN201920168934.4U CN201920168934U CN209510778U CN 209510778 U CN209510778 U CN 209510778U CN 201920168934 U CN201920168934 U CN 201920168934U CN 209510778 U CN209510778 U CN 209510778U
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Abstract
The utility model provides a kind of hydraulic cylinder of two-way dual mechanical locking in achievable any position, comprising: piston rod, cylinder barrel rear end cap, cylinder barrel drive end bearing bracket, shell, spring, external bushing, piston, neck bush, cylinder barrel；The utility model pushes external bushing by the spring in cylinder barrel, it is acted on neck bush by the conical surface, it shrinks neck bush and holds cylinder barrel tightly, cylinder barrel is locked simultaneously, and flexible deformation holding piston is generated under radial force effect, realize double locking, the axial lock clamp force of oil cylinder is greatly increased, is locked relatively reliable.The axial locking of Barrel of Hydraulic Cylinders is converted by the elastic force that compression deformation of the spring generates; i.e. hydraulic system is shut down, and hydraulic cylinder can lock, and hydraulic locking cylinder does not need additional high pressure oil sources; the utility model is able to bear bigger axial load while having the advantages that conventional cylinder locker.
Description
Technical field
The utility model, which belongs to actuator mechanical interlocking technical field, especially one kind in hydraulic system, can be achieved any position
Set the hydraulic cylinder of two-way dual mechanical locking.
Background technique
With the extensive use of hydraulic cylinder, hydraulic locking circuit can not solve hydraulic cylinder unavoidably existing internal leakage and
The piston of generation slides and stability problem, is only used for locking positioning occasion of less demanding.For locking positioning require compared with
High, load acts on the occasion of lower long-time positive lock, must just use mechanical lock hydraulic cylinder.Currently on the market more often
Hydraulic cylinder mechanical interlocking mode has: telescopic, brake chip, steel ball frictional, roller frictional formula, internal expansion type, snap ring-type etc..
But all there is respective drawback: it is telescopic be not easy to assemble with internal expansion type, piston rod maximum speed larger by environment temperature will receive
Limitation；Brake chip piston rod surface is easy to wear, and the service life is low；Steel ball is frictionally limited with roller frictional formula axial bearing capacity, processes
Required precision is higher, casing wall is easily damaged；Snap ring-type can not achieve any position locking.
Summary of the invention
The purpose of the utility model is to overcome the deficiencies in the prior art, and it is double to provide a kind of achievable any position
The hydraulic cylinder locked to dual mechanical, with bigger axial load can be born compared with model；Cylinder barrel inside and outside wall can be achieved simultaneously
Double locking realizes bigger axial lock clamp force；Maintenance cost is low, is not affected by the external environment, and reliable operation is easy to implement certainly
Dynamicization control.The technical solution adopted in the utility model is:
A kind of hydraulic cylinder of the two-way dual mechanical locking in achievable any position, comprising: piston rod, cylinder barrel rear end cap, cylinder
Cylinder drive end bearing bracket, shell, spring, external bushing, piston, neck bush, cylinder barrel；
Piston rod passes through cylinder barrel rear end cap and enters cylinder barrel, and cylinder barrel rear end cap and cylinder barrel drive end bearing bracket are separately connected and close cylinder
The rear end and front end of cylinder；Between cylinder barrel rear end cap and piston rod clearance fit and be equipped with sealing ring,
Piston is connected to piston rod front end, is set in cylinder barrel；Between piston and inner wall of cylinder clearance fit and be equipped with sealing
Circle；
Cylinder barrel is together in piston rod merging shell；The tail end of piston rod connects and closes the tail end of shell；
In cylinder barrel, inner cavity of cylinder is divided into the oil positioned at the oil cylinder rodless cavity of pistons front sides and on rear side of piston by piston
Cylinder rod chamber；
Plunger end is equipped with rodless cavity hydraulic fluid port and rod chamber hydraulic fluid port, and rodless cavity hydraulic fluid port is oily by be arranged in piston rod one
Road is connected to oil cylinder rodless cavity；Rod chamber hydraulic fluid port is connected to cylinder rod chamber by another oil duct being arranged in piston rod；
External bushing and neck bush are sheathed on outside cylinder barrel；Neck bush rear portion is cone cylinder type, is passed through between external bushing and neck bush
Cone match；Neck bush connects and closes the front end of shell；Between neck bush and cylinder barrel outer wall clearance fit and be equipped with sealing
Circle；External bushing is in the gap between shell and cylinder barrel；Between external bushing rear portion and cylinder barrel outer wall clearance fit and be equipped with it is close
Seal, between external bushing rear portion and inner walls clearance fit and be equipped with sealing ring；
Between shell and cylinder barrel in gap, the front side at external bushing rear portion is unlock oil pocket, and rear side is oil back chamber；
It is equipped with step on the inner wall of the housing, spring is set on cylinder barrel, between shell and cylinder barrel, one end of spring and platform
Rank offsets, and the other end offsets with external bushing rear end；
The oil return opening of connection oil back chamber is equipped on shell；
The unlock hydraulic fluid port of connection unlock oil pocket is equipped on shell.
It further, can be in radial separation when external bushing and neck bush axially close up.
Further, cooperation position is corresponding with piston position between external bushing and neck bush.
Further, oil return opening is located in the shell section where spring.
Further, earrings part is made in the tail end of piston rod.
Further, earrings part is made in cylinder barrel drive end bearing bracket.
Further, spring uses Rectangular Section Spring.
Further, the one or both ends of spring increase gasket.
Utility model has the advantages that the utility model pushes external bushing by the spring in cylinder barrel, made by the conical surface
Cylinder barrel is held tightly on neck bush shrinking, neck bush, while being locked cylinder barrel and being generated flexible deformation holding under radial force effect
Piston realizes double locking, greatly increases the axial lock clamp force of oil cylinder, locks relatively reliable.It is produced by compression deformation of the spring
Raw elastic force is converted into the axial locking of Barrel of Hydraulic Cylinders, i.e. hydraulic system is shut down, and hydraulic cylinder can lock, and hydraulic locking cylinder is not
Additional high pressure oil sources is needed, the utility model is able to bear bigger axis while having the advantages that conventional cylinder locker
To load, it will not influence the properties of hydraulic cylinder, it is free of extraneous thermal effects；It locks relatively reliable, it is easy to accomplish.
Detailed description of the invention
Fig. 1 is the structure composition schematic diagram of the utility model.
Specific embodiment
Below with reference to specific drawings and examples, the utility model is described in further detail.
The utility model proposes a kind of hydraulic cylinders of achievable two-way dual mechanical locking in any position, as shown in Figure 1, packet
It includes: piston rod 1, cylinder barrel rear end cap 21, cylinder barrel drive end bearing bracket 22, shell 3, spring 4, external bushing 5, piston 6, neck bush 7, cylinder barrel 8；
Piston rod 1 passes through cylinder barrel rear end cap 21 and enters cylinder barrel 8, and cylinder barrel rear end cap 21 and cylinder barrel drive end bearing bracket 22 are separately connected simultaneously
Close the rear end and front end of cylinder barrel 8；Between cylinder barrel rear end cap 21 and piston rod 1 clearance fit and be equipped with sealing ring, prevent oil
Hydraulic oil seepage in cylinder rod chamber B, while cylinder barrel rear end cap 21 may make to move together with 8 opposing pistons bar 1 of cylinder barrel；
Piston 6 is connected to 1 front end of piston rod, is set in cylinder barrel 8；It clearance fit and is equipped between 8 inner wall of piston 6 and cylinder barrel
Sealing ring；
Cylinder barrel 8 is placed in shell 3 together with piston rod 1；The tail end of piston rod 1 connects and closes the tail end of shell 3；Piston
The tail end of bar 1 can be made into earrings part, and hydraulic cylinder is facilitated to connect with external component；Earrings part can also be made in cylinder barrel drive end bearing bracket 22,
It is convenient to be connect with external component；
In cylinder barrel 8,8 inner cavity of cylinder barrel is divided into positioned at the oil cylinder rodless cavity A of 6 front side of piston and after piston 6 by piston 6
The cylinder rod chamber B of side；Oil cylinder rodless cavity A and cylinder rod chamber B has been isolated in piston 6；Cylinder barrel 8 can be moved again with opposing pistons 6；
1 tail end of piston rod is equipped with rodless cavity hydraulic fluid port P1 and rod chamber hydraulic fluid port P2, rodless cavity hydraulic fluid port P1 by setting in piston rod
The oil duct connection oil cylinder rodless cavity A set；Rod chamber hydraulic fluid port P2, which is connected to oil cylinder by another oil duct being arranged in piston rod, bar
Chamber B；
External bushing 5 and neck bush 7 are sheathed on outside cylinder barrel 8；7 rear portion of neck bush is cone cylinder type, external bushing 5 and neck bush 7 it
Between by cone match, external bushing 5 and neck bush 7 is axial can be in radial separation, so that neck bush 7 produces cylinder barrel 8 when closing up
Raw radial pressure；More preferably, cooperation position is corresponding with 6 position of piston between external bushing 5 and neck bush 7；Neck bush 7 is connected and is sealed
Close the front end of shell 3；Between 8 outer wall of neck bush 7 and cylinder barrel clearance fit and be equipped with sealing ring；External bushing 5 be located at shell 3 with
In gap between cylinder barrel 8；Between 8 outer wall of 5 rear portion of external bushing and cylinder barrel clearance fit and be equipped with sealing ring, 5 rear portion of external bushing
Between 3 inner wall of shell clearance fit and be equipped with sealing ring；
Between shell 3 and cylinder barrel 8 in gap, the front side at 5 rear portion of external bushing is unlock oil pocket C, and rear side is oil back chamber D；
It is equipped with step 301 in 3 inner wall of shell, spring 4 is set on cylinder barrel 8, between shell 3 and cylinder barrel 8, spring 4
One end offset with step 301, the other end offsets with 5 rear end of external bushing；Rectangular Section Spring may be selected in spring 4；
The oil return inlet T of connection oil back chamber D is equipped on shell 3, oil return inlet T is preferably placed in the shell section at 4 place of spring；
Oil return inlet T is for connecting fuel tank；
The unlock hydraulic fluid port P0 of connection unlock oil pocket C is equipped on shell 3；
When rodless cavity hydraulic fluid port P1 is passed through high pressure oil, pressure increases in oil cylinder rodless cavity A, and cylinder barrel 8 is outside relative to piston 6
Stretch out shell 3；Conversely, when rod chamber hydraulic fluid port P2 is passed through high pressure oil, 8 regracting of cylinder barrel；
The working principle of locking are as follows: when unlock hydraulic fluid port P0 is passed through low pressure oil, oil cylinder rodless cavity A pressure and oil back chamber D pressure
Quite, substantially equal to tank pressure, external bushing 5 compress the neck bush 7 of cone barrel under the effect of 4 elastic force of spring, and neck bush 7 is outside
The outer wall for holding cylinder barrel 8 tightly is shunk under the action of bushing 5, while cylinder barrel 8 generates certain elasticity under 7 radial forces of neck bush and becomes
Shape holds 8 inner wall of cylinder barrel and piston 6 tightly, realizes double locking, make 8 axial lock of cylinder tube, be able to bear biggish axial direction
Load.Cylinder barrel 8 can be realized in extended or retracted any position and be locked.
When unlock hydraulic fluid port P0 is passed through high pressure oil, unlock oil pocket C high pressure oil acts on compressed spring 4 to the left of external bushing 5, interior
Bushing 7 unclamps 8 outer wall of cylinder barrel and realizes unlock, while cylinder barrel 8 loses radially outward force effect and restPoses, and realizes in cylinder barrel 8
The unlock of wall and piston 6, cylinder barrel 8 can be with free movement at this time.
In the utility model, extensible member is sleeve 8, and piston rod, piston and shell are fixed mechanism (no motion of), phase
Bigger axial load is able to bear than same model hydraulic cylinder (identical cylinder diameter, bar diameter)；
In the utility model, locking member (i.e. neck bush 7 and piston 6) holding is cylinder barrel 8, compared to model oil cylinder
(identical cylinder diameter, bar diameter) locking active area is bigger, increases the axial lock clamp force of hydraulic cylinder；
, it can be achieved that 8 inside and outside wall dual mechanical of cylinder barrel is locked in the utility model；The first, external bushing 5 is made in 4 elastic force of spring
With lower compression cone barrel neck bush 7, neck bush 7 shrinks the outer wall for holding cylinder barrel 8 tightly under the action of external bushing 5；The second, cylinder barrel 8
Certain flexible deformation is generated under 7 radial forces of neck bush, holds 8 inner wall of cylinder barrel and piston 6 tightly；Greatly increase hydraulic cylinder
Axial lock clamp force keeps hydraulic cylinder axial locking relatively reliable；
In the utility model, position and 8 inner wall of cylinder barrel that neck bush 7 acts on 8 outer wall of cylinder barrel act on the position of piston 6
It sets unanimously, avoids being deformed due to cylinder barrel 8 by excessive radial force while realizing double locking；
In the utility model, unlock and the lock of hydraulic cylinder are realized by the on-off of control unlock hydraulic fluid port P0 and high pressure oil
Tightly, it is easy to accomplish electrohydraulic integration control；
In the utility model, gasket further can be set in the one or both ends of spring 4, it can be logical according to actual use demand
Cross the spacer thickness adjustment coupling mechanism force size of adjustment spring, reliable lock；
In the utility model, neck bush 7 and cylinder barrel 8, cylinder barrel 8 and piston 6 are clearance fit, when in the unlocked state
When, cylinder barrel 8 it is axial can flexible motion, will not additional effect piston rod maximum/small speed of service；
In the utility model, rod chamber hydraulic fluid port P2, rodless cavity hydraulic fluid port P1 are arranged on piston rod 1, avoid that cylinder barrel is followed to transport
Dynamic piping connection, it is easy for installation.
It should be noted last that the above specific embodiment is only to illustrate the technical solution of the utility model rather than limits
System, although the utility model is described in detail referring to example, those skilled in the art should understand that, it can be right
The technical solution of the utility model is modified or replaced equivalently, without departing from the spirit and model of technical solutions of the utility model
It encloses, should all cover in the scope of the claims of the utility model.
Claims (8)
1. a kind of hydraulic cylinder of the two-way dual mechanical locking in achievable any position characterized by comprising piston rod (1), cylinder
Tube rear end lid (21), cylinder barrel drive end bearing bracket (22), shell (3), spring (4), external bushing (5), piston (6), neck bush (7), cylinder barrel
(8)；
Piston rod (1) passes through cylinder barrel rear end cap (21) and enters cylinder barrel (8), and cylinder barrel rear end cap (21) and cylinder barrel drive end bearing bracket (22) are respectively
Connect and close the rear end and front end of cylinder barrel (8)；Between cylinder barrel rear end cap (21) and piston rod (1) clearance fit and be equipped with it is close
Seal,
Piston (6) is connected to piston rod (1) front end, is set in cylinder barrel (8)；Clearance fit between piston (6) and cylinder barrel (8) inner wall
And it is equipped with sealing ring；
Cylinder barrel (8) is together in piston rod (1) merging shell (3)；The tail end of piston rod (1) connects and closes the tail of shell (3)
End；
In cylinder barrel (8), cylinder barrel (8) inner cavity is divided into the oil cylinder rodless cavity (A) on front side of piston (6) and is located at by piston (6)
Cylinder rod chamber (B) on rear side of piston (6)；
Piston rod (1) tail end is equipped with rodless cavity hydraulic fluid port (P1) and rod chamber hydraulic fluid port (P2), and rodless cavity hydraulic fluid port (P1) passes through piston rod
One oil duct of interior setting is connected to oil cylinder rodless cavity (A)；Rod chamber hydraulic fluid port (P2) is connected to by another oil duct being arranged in piston rod
Cylinder rod chamber (B)；
External bushing (5) and neck bush (7) are sheathed on cylinder barrel (8) outside；Neck bush (7) rear portion is cone cylinder type, external bushing (5) and liner
Pass through cone match between set (7)；Neck bush (7) connects and closes the front end of shell (3)；Neck bush (7) and cylinder barrel (8) are outside
Between wall clearance fit and be equipped with sealing ring；External bushing (5) is located in the gap between shell (3) and cylinder barrel (8)；External bushing
(5) between rear portion and cylinder barrel (8) outer wall clearance fit and be equipped with sealing ring, between external bushing (5) rear portion and shell (3) inner wall between
Gap is equipped with sealing ring with merging；
Between shell (3) and cylinder barrel (8) in gap, the front side at external bushing (5) rear portion is unlock oil pocket (C), and rear side is oil return
Chamber (D)；
Be equipped with step (301) in shell (3) inner wall, spring (4) is set on cylinder barrel (8), be located at shell (3) and cylinder barrel (8) it
Between, one end and the step (301) of spring (4) offset, and the other end offsets with external bushing (5) rear end；
The oil return opening (T) of connection oil back chamber (D) is equipped on shell (3)；
The unlock hydraulic fluid port (P0) of connection unlock oil pocket (C) is equipped on shell (3).
2. the hydraulic cylinder of the two-way dual mechanical locking in achievable any position as described in claim 1, which is characterized in that
External bushing (5) and neck bush (7) can be in radial separations when axially closing up.
3. the hydraulic cylinder of the two-way dual mechanical locking in achievable any position as described in claim 1, which is characterized in that
Cooperation position is corresponding with piston (6) position between external bushing (5) and neck bush (7).
4. the hydraulic cylinder of the two-way dual mechanical locking in achievable any position as described in claim 1, which is characterized in that
Oil return opening (T) is located in the shell section where spring (4).
5. the hydraulic cylinder of the two-way dual mechanical locking in achievable any position as described in claim 1, which is characterized in that
Earrings part is made in the tail end of piston rod (1).
6. the hydraulic cylinder of the two-way dual mechanical locking in achievable any position as described in claim 1, which is characterized in that
Earrings part is made in cylinder barrel drive end bearing bracket (22).
7. the hydraulic cylinder of the two-way dual mechanical locking in achievable any position as described in claim 1, which is characterized in that
Spring (4) uses Rectangular Section Spring.
8. the hydraulic cylinder of the two-way dual mechanical locking in achievable any position as described in claim 1, which is characterized in that
The one or both ends of spring (4) increase gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920168934.4U CN209510778U (en) | 2019-01-30 | 2019-01-30 | The hydraulic cylinder of the two-way dual mechanical locking in any position can be achieved |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920168934.4U CN209510778U (en) | 2019-01-30 | 2019-01-30 | The hydraulic cylinder of the two-way dual mechanical locking in any position can be achieved |
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| Publication Number | Publication Date |
|---|---|
| CN209510778U true CN209510778U (en) | 2019-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920168934.4U Active CN209510778U (en) | 2019-01-30 | 2019-01-30 | The hydraulic cylinder of the two-way dual mechanical locking in any position can be achieved |
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| CN (1) | CN209510778U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578377A (en) * | 2019-01-30 | 2019-04-05 | 华中科技大学无锡研究院 | The hydraulic cylinder of the two-way dual mechanical locking in any position can be achieved |
| CN111120455A (en) * | 2019-12-24 | 2020-05-08 | 安徽博微联控科技有限公司 | Quick-insertion and time-delay separation device |
| CN114508521A (en) * | 2022-03-04 | 2022-05-17 | 烟台星辉航空液压有限公司 | Locking device for holding shafts tightly at any position |
| CN111120455B (en) * | 2019-12-24 | 2024-04-30 | 安徽博微联控科技有限公司 | Quick inserting and time-delay separating device |
-
2019
- 2019-01-30 CN CN201920168934.4U patent/CN209510778U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578377A (en) * | 2019-01-30 | 2019-04-05 | 华中科技大学无锡研究院 | The hydraulic cylinder of the two-way dual mechanical locking in any position can be achieved |
| CN111120455A (en) * | 2019-12-24 | 2020-05-08 | 安徽博微联控科技有限公司 | Quick-insertion and time-delay separation device |
| CN111120455B (en) * | 2019-12-24 | 2024-04-30 | 安徽博微联控科技有限公司 | Quick inserting and time-delay separating device |
| CN114508521A (en) * | 2022-03-04 | 2022-05-17 | 烟台星辉航空液压有限公司 | Locking device for holding shafts tightly at any position |
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