CN106593993B - A kind of twin-tub sequential telescopic oil cylinder - Google Patents
A kind of twin-tub sequential telescopic oil cylinder Download PDFInfo
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- CN106593993B CN106593993B CN201611218745.0A CN201611218745A CN106593993B CN 106593993 B CN106593993 B CN 106593993B CN 201611218745 A CN201611218745 A CN 201611218745A CN 106593993 B CN106593993 B CN 106593993B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
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- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
A kind of twin-tub sequential telescopic oil cylinder, including flexible balanced valve, First piston bar, the first conduit, first piston cylinder body, communicating pipe, first pushing-type check valve, second piston bar, second conduit, second piston bar cylinder, the second pushing-type check valve, trimmer valve, first, second connecting tube composition, the twin-tub telescoping cylinder, flexible balanced valve is connected with First piston bar, and the safe self-locking of telescoping cylinder is realized by the balanced valve that stretches；Realize first to stretch first piston cylinder and stretch the order of second piston cylinder again by the first pushing-type check valve on the head of first piston cylinder body and stretch out, the order retraction of first contracting second piston cylinder contracting first piston cylinder again is realized by the second pushing-type check valve of second piston club head.The gentle transition that two cylinders switch when retracting is realized by the bottom trimmer valve of second piston cylinder body.
Description
Technical field
The present invention relates to a kind of twin-tub sequential telescopic oil cylinder.
Background technology
Among double telescoping cylinders or three telescoping cylinders or more level telescoping cylinder, hydraulic oil pipe is leaned in the hydraulic oil transmission of cylinder and cylinder,
Or all stretch in several cylinders in sequencing problem, or realized using sequence valve by pressure difference, to arrive using cylinder diameter section difference come
Realize sequential telescopic, or more have by multi-way valve come the telescoping problem of master cylinder cylinder, can so be laid out and bring to cylinder pipe
Very burden, telescoping cylinder stretch inside arm, it is easy to which producing interference causes oil leak.
Or what is had is concentrated on a valve body by two check valves, and by mechanical collision type open check valve,
Very big difficulty so is brought to this valve design and making, so that cost is very high；
There is a kind of pushing-type check valve to be installed on first piston cylinder bottom, by second piston cylinder bottom to hit the open-top pushing-type of disk unidirectional
Valve, all remote from the first second connection end, after being furnished with flexible pulley on telescoping cylinder, telescoping cylinder stress can produce certain deformation, together
When due to space reasons, hitting disk can not possibly do very big, and disk can be hit by, which having very much, hits less than check valve.Cause flexible stopping.
The content of the invention
The present invention solve the deficiencies in the prior art and provide it is a kind of it is compact-sized, layout is simple, check valve is simple, zero
Part is few, reliable twin-tub sequential telescopic oil cylinder easy to make.
The technical scheme is that：A kind of twin-tub sequential telescopic oil cylinder, including first piston cylinder and second piston cylinder, institute
Stating first piston cylinder includes first piston cylinder body, the first piston in first piston cylinder body and First piston bar, described
Second piston cylinder includes second piston cylinder body, second piston and second piston bar in second piston cylinder body,
The first conduit is fixed with the First piston bar, the outer wall of the First piston bar inner wall and the first conduit is equipped with
Interval forms the first hydraulic oil channel, and one end of first hydraulic oil channel is connected by oil circuit and first piston cylinder rod chamber
Logical, the other end is connected with the first hydraulic fluid port of flexible balanced valve, and communicating pipe, the outer wall of the communicating pipe are equipped with first conduit
It is flexibly connected with one end inner wall sealing of the first conduit, one end of the communicating pipe is fixed on first piston cylinder body, the other end
It is arranged in the first conduit, and is connected by first conduit with the second hydraulic fluid port of flexible balanced valve, the first piston
When cylinder acts, the communicating pipe is arranged in the first conduit all the time；
The second conduit is fixed with the second piston bar, the outer wall of the second piston bar inner wall and the second conduit is equipped with
Interval forms the second hydraulic oil channel, and one end of second hydraulic oil channel is connected by oil circuit and second piston cylinder rod chamber
Logical, the other end is connected by the first hydraulic control one-way valve with first piston cylinder rod chamber, and one end of second conduit passes through buffering
Valve is connected with second piston cylinder rodless cavity, and the other end is connected by the second connecting tube with communicating pipe；
The first piston cylinder rodless cavity is connected with one end of the first connecting tube, and the other end of first connecting tube passes through
Second hydraulic control one-way valve is connected with the second connecting tube；
The first piston cylinder controls the first hydraulic control one-way valve reverse opening, the second piston when being elongated to extreme position
Cylinder controls the second hydraulic control one-way valve reverse opening when being retracted to extreme position.
Preferably, first, second hydraulic control one-way valve is pushing-type check valve.
Preferably, the first hydraulic control one-way valve is installed on the first piston cylinder body, is provided with the second piston bar
Second hydraulic control one-way valve, first hydraulic control one-way valve pass through by first piston reverse opening, the second hydraulic control one-way valve
Two guide sleeve reverse openings, the second guide sleeve are installed on the head of second piston cylinder body.
Preferably, first hydraulic control one-way valve and the second hydraulic control one-way valve be arranged in first piston cylinder cylinder head and
The head of second piston cylinder.
Preferably, second piston club head returns articulated joint in first piston cylinder cylinder head and is hinged, and is returned in described hinged
The oil circuit of head connection first piston cylinder and second piston cylinder.
Due to using the above structure, the invention has the advantages that：
1st, the first hydraulic control one-way valve can only be opened by first piston, when it is closed to second piston cylinder rod chamber hydraulic pressure
Oily oil return has locking effect, and the second hydraulic control one-way valve can only be opened by the second guide sleeve of second piston cylinder, when it is closed
There is locking effect to the rodless cavity hydraulic oil circuit of first piston cylinder, realize sequential telescopic by two hydraulically-controlled one-way valves, at the same time
The principle can be used among the sequential telescopic of three oil cylinders and more Multi-cylinder.
2nd, the first pushing-type check valve and the second pushing-type check valve are arranged in the cylinder head and second piston of first piston cylinder
The head of cylinder, avoids Liang Ge check valves centralized layout, designs and produces difficulty, it is of high cost the shortcomings that.
3rd, the first pushing-type check valve and the second pushing-type check valve are switched by existing component on telescoping cylinder, greatly reduce zero
Component, design and processes are simpler.
In conclusion two mechanical check valves are separately mounted on first piston cylinder cylinder head and second piston head, the
One pushing-type check valve is open-top by the piston rod of first piston cylinder, the guide sleeve that the second pushing-type check valve passes through second piston cylinder cylinder head
Open, i.e., convenient and reliable, layout is simple, and check valve is simple, and parts are few.
Brief description of the drawings
Fig. 1 is the hydraulic schematic diagram of the present invention.
Brief description of the drawings, 1, flexible balanced valve；11st, the first hydraulic fluid port of flexible balanced valve；12nd, the second oil of flexible balanced valve
Mouthful；2nd, first piston cylinder body；21st, the first conduit；22nd, first piston；23rd, First piston bar；24th, communicating pipe；25th, the first hydraulic pressure
Oily passage；4th, the first pushing-type check valve；5th, the second pushing-type check valve；61st, the second conduit；62nd, second piston bar；6th, second piston
Cylinder body；63rd, trimmer valve；64th, the second hydraulic oil channel；8th, the first connecting tube；9th, the second connecting tube.
Embodiment
In conjunction with attached drawing, the technology contents of the present invention are described further.
As shown in Figure 1, a kind of twin-tub sequential telescopic oil cylinder, including first piston cylinder and second piston cylinder, described first lives
Plug cylinder includes first piston cylinder body 2, the first piston 22 in first piston cylinder body 2 and First piston bar 23, and described
Two piston cylinders include second piston cylinder body 6, the second piston in second piston cylinder body 6 and second piston bar 62, described
First piston bar 23 and second piston bar 62 are hollow stem；
The first conduit 21, one end of the First piston bar 23 and the first conduit 21 are fixed with the First piston bar 23
Outer wall be tightly connected, the other end is sealingly mounted on flexible balanced valve 1,23 inner wall of First piston bar and the first conduit 21
Outer wall be equipped with interval and form the first hydraulic oil channel 25, one end of first hydraulic oil channel 25 passes through oil circuit and the first work
Plug cylinder rod chamber connects, and the other end is connected with the first hydraulic fluid port 11 of flexible balanced valve 1, and communicating pipe is equipped with first conduit 21
24, the outer wall of the communicating pipe 24 is flexibly connected with one end inner wall sealing of the first conduit 21, and one end of the communicating pipe 24 is consolidated
It is scheduled on first piston cylinder body 2, the other end is arranged in the first conduit 21, and passes through first conduit 21 and flexible balance
Second hydraulic fluid port 12 of valve 1 connects, and when the first piston cylinder acts, the communicating pipe 24 is arranged in the first conduit 21 all the time；
The second conduit 61, one end of the second piston bar 62 and the second conduit 61 are fixed with the second piston bar 62
Outer wall be tightly connected, the other end fixed or is hinged on first piston cylinder body 2, and 62 inner wall of second piston bar is led with second
The outer wall of pipe 61 is equipped with interval and forms the second hydraulic oil channel 64, and one end of second hydraulic oil channel 64 passes through oil circuit and the
Two piston cylinder rod chambers connect, and the other end is connected by the first pushing-type check valve 4 with first piston cylinder rod chamber, and described second leads
One end of pipe 61 is connected by trimmer valve 63 with second piston cylinder rodless cavity, and the other end passes through the second connecting tube 9 and communicating pipe 24
Connection；
The first piston cylinder rodless cavity is connected with one end of the first connecting tube 8, and the other end of first connecting tube 8 leads to
The second pushing-type check valve 5 is crossed to connect with the second connecting tube 61；
The First piston bar 23 controls 4 reverse opening of the first pushing-type check valve when being elongated to extreme position, and described second
The elongation of piston rod 62 controls 5 reverse opening of the second pushing-type check valve when being retracted to extreme position.
As a kind of embodiment of the present apparatus, the first pushing-type check valve 4 is by 22 reverse opening of first piston, and
Two pushing-type check valves 5 pass through the second guide sleeve reverse opening, the head of the second piston cylinder body 6 of the second guide sleeve installation.
In use, together with first piston cylinder body 2 rigidly fixes with second piston bar 62, it is also possible to pass through the hinge with oil circuit
The mode of connecing connects, and First piston bar 23 is hinged with arm body, one the first conduit 21 of welding in First piston bar 23, and hydraulic oil is from stretching
Contracting balanced valve 1 comes out, and is entered all the way by interlayer (i.e. the first hydraulic oil channel) between the first conduit 21 and First piston bar 23
The rod chamber of first piston cylinder, while hydraulic oil, into second piston bar 62, can be entered back into by the first pushing-type check valve 4
Interlayer (i.e. the first hydraulic oil channel) between 62 and second conduit 61 of second piston bar, into second piston cylinder to rod chamber；
Another circuit out passes through the first conduit 21 and communicating pipe 24 from flexible balanced valve 1, stretches in first piston cylinder the communicating pipe 24
During, play the role of Oil Guide, (oil of rodless cavity is first passed through the effect that the second check valve arrives rodless cavity again), then by second
Connecting tube 9, then by the second conduit 61 in second piston bar 62, into the rodless cavity of second piston cylinder；From the second connecting tube 9
An out branch, by the second pushing-type check valve 5, then by the first connecting tube 8, into the rodless cavity of first piston cylinder；
Meanwhile when first piston cylinder stretches out, since First piston bar 23 is remote from the first pushing-type check valve 4 at this time, first
Pushing-type check valve 4 is closed, and hydraulic oil can not return to the rod chamber of first piston cylinder from the rod chamber of second piston cylinder,
Flexible balanced valve 1 is entered back into, i.e. the rod chamber of second piston cylinder can not connect flexible balanced valve 1, and second piston cylinder does not stretch out.When
When first piston cylinder has been stretched soon, first piston 22 opens the first pushing-type check valve 4, and the rod chamber connection of second piston cylinder is flexible flat
Weigh valve 1, and second servo loop leads to, and such second stretches out, and has been achieved in that first piston cylinder is first stretched, then the order that second piston cylinder stretches out
Stretch out.
During retraction, due to the stretching of second piston cylinder, the second guide sleeve and the second pushing-type on second piston cylinder body 3 are unidirectional
Valve 5 separates, and the second pushing-type check valve 5 is inversely closed, and the hydraulic oil of the rodless cavity of first piston cylinder is due to the second pushing-type list at this time
Effect to valve 5, hydraulic oil can't get out, it is impossible to retracts, and at this time, the first pushing-type check valve 4 does not work rod chamber oil inlet.
The oil circuit of second piston cylinder is logical, and second piston cylinder body starts to retract, the realization order retraction first step, when second piston cylinder body
When having contracted soon, the second guide sleeve of second piston cylinder pushes the second pushing-type check valve open, and first piston cylinder rodless cavity hydraulic oil is opened,
First piston cylinder starts to retract, realization order retraction second step, the order retraction for first retraction again of retracting which achieves second.
As shown in Figure 1, first piston cylinder body stretching hydraulic oil principle is as follows：High pressure oil enters from flexible balanced valve 1, successively
First connecting tube 9 is entered by First piston bar 23, the first conduit 21, communicating pipe 24, so that push the second pushing-type check valve 5 open,
Enter the rodless cavity of first piston cylinder body by the second connecting tube 8, so as to promote first piston 22 to act so that low pressure oil is from the
The rod chamber of one piston enters the interlayer (i.e. the first hydraulic oil channel) between 23 and first conduit 21 of First piston bar, enters back into
Flexible balanced valve 1, so that first piston cylinder body 2 stretches out.In the process, since the first pushing-type check valve 4 is closed, second
The rod chamber hydraulic oil of piston/cylinder can not return flexible balanced valve, and second piston cylinder body does not stretch out.
It is as follows that second piston cylinder body stretches out hydraulic oil principle：When first piston cylinder body has been stretched soon, in last several millimeters of rows
Journey, first piston 22 push the first pushing-type check valve 4 open so that the first pushing-type check valve 4 is opened, and high pressure oil is from flexible balanced valve 1
Sequentially enter First piston bar 23, the first conduit 21, communicating pipe 24, the first connecting tube enter second piston bar 62, then pass through
Second conduit 61 enters trimmer valve 63, hence into the rodless cavity to second piston cylinder body, promotes second piston action so that
From the interlayer of 62 and second conduit 61 of second piston bar, (i.e. the second hydraulic oil leads to the hydraulic oil of the rod chamber of second piston cylinder body
Road), the first pushing-type check valve 4 is entered, then sequentially enters rod chamber, the First piston bar 23 and first of First piston bar 23
Interlayer (i.e. the first hydraulic oil channel) between conduit, then arrive flexible balanced valve 1 so that second piston cylinder body stretches out.
Second piston cylinder body retraction hydraulic oil principle is as follows：High pressure oil enters 23 He of First piston bar from flexible balanced valve 1
Interlayer (i.e. the first hydraulic oil channel) between first conduit 21, pushes the first pushing-type check valve 4 open, then from second piston bar 62 into
Enter to the interlayer (i.e. the second hydraulic oil channel) between 62 and second conduit 61 of second piston bar, have hence into second piston cylinder
Rod cavity, promotes second piston action so that the hydraulic oil of second piston cylinder rodless cavity sequentially enters the second conduit 61, second piston
Bar 62 sequentially enters communicating pipe 24 by the first connecting tube 9 again, the first conduit 21 finally reaches flexible balanced valve so that second lives
Plug cylinder body is retracted；The second pushing-type check valve 5 is closed at this time, the rodless cavity hydraulic oil of first piston cylinder body can not oil return, first lives
Plug cylinder cannot retract.
First piston cylinder body retraction oil pressure oil principle is as follows：When second piston cylinder body is reduced to bottom, on second piston cylinder body
The second guide sleeve push the second pushing-type check valve 5 open, high pressure oil enters 23 and first conduit of First piston bar from flexible balanced valve 1
Interlayer (i.e. the first hydraulic oil channel) between 21, enters back into first piston cylinder body rod chamber, so as to promote first piston 22 dynamic
Make so that the hydraulic oil of first piston cylinder body rodless cavity passes sequentially through the second connecting tube 8, the second pushing-type check valve 5 enters first
Connecting tube 9, flexible balanced valve 1 is returned to by communicating pipe 24, the first conduit 21；
By Fig. 1 principles, first stretch out first piston cylinder and stretch out second piston cylinder again, first retraction second piston cylinder contracts again
Return first piston cylinder；It has been achieved in that exact sequence stretches.
Claims (5)
- A kind of 1. twin-tub sequential telescopic oil cylinder, it is characterised in that：Including first piston cylinder and second piston cylinder, the first piston Cylinder includes first piston cylinder body, the first piston in first piston cylinder body and First piston bar, the second piston cylinder Second piston and second piston bar including second piston cylinder body, in second piston cylinder body,The first conduit is fixed with the First piston bar, the outer wall of the First piston bar inner wall and the first conduit is equipped with interval The first hydraulic oil channel is formed, one end of first hydraulic oil channel is connected by oil circuit with first piston cylinder rod chamber, separately One end is connected with the first hydraulic fluid port of flexible balanced valve, is equipped with communicating pipe in first conduit, the outer wall of the communicating pipe and the One end inner wall sealing of one conduit is flexibly connected, and one end of the communicating pipe is fixed on first piston cylinder body, and the other end is set It is connected in the first conduit, and by first conduit with the second hydraulic fluid port of flexible balanced valve, the first piston cylinder moves When making, the communicating pipe is arranged in the first conduit all the time；The second conduit is fixed with the second piston bar, the outer wall of the second piston bar inner wall and the second conduit is equipped with interval The second hydraulic oil channel is formed, one end of second hydraulic oil channel is connected by oil circuit with second piston cylinder rod chamber, separately One end is connected by the first hydraulic control one-way valve with first piston cylinder rod chamber, and one end of second conduit passes through trimmer valve and Two piston cylinder rodless cavities connect, and the other end is connected by the second connecting tube with communicating pipe；The first piston cylinder rodless cavity is connected with one end of the first connecting tube, and the other end of first connecting tube passes through second Hydraulic control one-way valve is connected with the second connecting tube；The first piston cylinder controls the first hydraulic control one-way valve reverse opening when being elongated to extreme position, the second piston cylinder is received The second hydraulic control one-way valve reverse opening is controlled when being reduced to extreme position.
- A kind of 2. twin-tub sequential telescopic oil cylinder according to claim 1, it is characterised in that：The first, second hydraulic control list It is pushing-type check valve to valve.
- A kind of 3. twin-tub sequential telescopic oil cylinder according to claim 2, it is characterised in that：Pacify on the first piston cylinder body Equipped with the first hydraulic control one-way valve, the second hydraulic control one-way valve, first hydraulic control one-way valve are installed in the second piston bar By first piston reverse opening, for the second hydraulic control one-way valve by the second guide sleeve reverse opening, the second guide sleeve is installed on the The head of two piston/cylinders.
- 4. twin-tub sequential telescopic oil cylinder according to claim 3, it is characterised in that：First hydraulic control one-way valve and second Hydraulic control one-way valve is arranged in the cylinder head of first piston cylinder and the head of second piston cylinder.
- 5. twin-tub sequential telescopic oil cylinder according to claim 4, it is characterised in that：Second piston club head and first piston Cylinder cylinder head returns articulated joint in and is hinged, and the oil circuit of articulated joint connection first piston cylinder and second piston cylinder is returned in described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611218745.0A CN106593993B (en) | 2016-12-26 | 2016-12-26 | A kind of twin-tub sequential telescopic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611218745.0A CN106593993B (en) | 2016-12-26 | 2016-12-26 | A kind of twin-tub sequential telescopic oil cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106593993A CN106593993A (en) | 2017-04-26 |
| CN106593993B true CN106593993B (en) | 2018-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611218745.0A Active CN106593993B (en) | 2016-12-26 | 2016-12-26 | A kind of twin-tub sequential telescopic oil cylinder |
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| Country | Link |
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| CN (1) | CN106593993B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112762035B (en) * | 2019-10-21 | 2023-07-21 | 江苏如通石油机械股份有限公司 | Control system for controlling action sequence of hydraulic cylinder by means of oil port position of hydraulic cylinder |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58130888A (en) * | 1983-01-12 | 1983-08-04 | 株式会社ユニック | Expansion device for cylinder |
| DE3911729A1 (en) * | 1989-04-11 | 1990-10-18 | Century Ii Gmbh Mobilkrane | Hydraulic system for telescopic jib crane - provides independent control of jib sections permitting simultaneous telescoping |
| AT12645U1 (en) * | 2011-03-10 | 2012-09-15 | Palfinger Ag | CRANE BOOM |
| CN202829375U (en) * | 2012-04-05 | 2013-03-27 | 大连益利亚工程机械有限公司 | Sequentially-telescopic multistage binding oil cylinder structure |
| CN206290529U (en) * | 2016-12-26 | 2017-06-30 | 山河智能装备股份有限公司 | A kind of twin-tub sequential telescopic oil cylinder |
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2016
- 2016-12-26 CN CN201611218745.0A patent/CN106593993B/en active Active
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| CN106593993A (en) | 2017-04-26 |
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Effective date of registration: 20220831 Address after: 410100 Shanhe intelligent industrial city, 1335 liangtang East Road, Changsha Economic and Technological Development Zone, Changsha City, Hunan Province Patentee after: SHANHE INTELLIGENT SPECIAL EQUIPMENT CO.,LTD. Address before: 410100 Shanhe intelligent industrial park, No. 16, Lixiang Middle Road, Changsha Economic and Technological Development Zone, Changsha City, Hunan Province Patentee before: Sunward Intelligent Equipment Co.,Ltd. |