CN108953288A - Pin-lift arrangement for Double Acting Telescopic Hydraulic Cylinder - Google Patents
Pin-lift arrangement for Double Acting Telescopic Hydraulic Cylinder Download PDFInfo
- Publication number
- CN108953288A CN108953288A CN201811160673.8A CN201811160673A CN108953288A CN 108953288 A CN108953288 A CN 108953288A CN 201811160673 A CN201811160673 A CN 201811160673A CN 108953288 A CN108953288 A CN 108953288A
- Authority
- CN
- China
- Prior art keywords
- mandril
- receiving portion
- pin
- hydraulic cylinder
- lift arrangement
- 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.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 abstract description 5
- 230000007257 malfunction Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- F15B15/1423—Component parts; Constructional details
Abstract
The invention discloses a kind of pin-lift arrangements for Double Acting Telescopic Hydraulic Cylinder, are related to hydraulic cylinder field, comprising: top stem casing, it is interior to be equipped with the first receiving portion.First mandril is fixed in the first receiving portion, and can be moved back and forth in the first receiving portion, and the first mandril is additionally provided with the second receiving portion.Second mandril is arranged in the second receiving portion, and can move back and forth in the second receiving portion, and the second mandril can at least partly be located at outside the second receiving portion when round-trip, and the second mandril is axially arranged with through-hole along it.Locking mechanism is used to open and release the locking that the first mandril moves back and forth in the first receiving portion.First driving device is set in the first receiving portion, for driving the first mandril mobile towards the direction locked by locking mechanism.Second driving device is set in the second receiving portion, for driving the second mandril mobile, locking mechanism is made to lock the first mandril.The present invention can effectively solve under the action of pressure difference, and pin-lift arrangement leads to the problem of malfunction.
Description
Technical field
The present invention relates to hydraulic cylinder fields, and in particular to a kind of pin-lift arrangement for Double Acting Telescopic Hydraulic Cylinder.
Background technique
On hydraulic construction machine or Large Hydraulic Equipment, due to being limited by installation space, load it is complicated and changeable, lead to
It often needs using multistage hydraulic cylinder, and works under alternating load.
A kind of Double Acting Telescopic Hydraulic Cylinder under loading condition exists in the prior art, to guarantee multistage hydraulic cylinder
Stretch, contracting order (mainly retract), first stage piston and second piston end are provided with the stroke valve of lance, due to stroke
The lance of valve is exposed in the internal oil of hydraulic cylinder, thus stroke valve must be taken into consideration generates in differential pressure action and open by mistake asking of opening
Topic, to prevent stroke valve from surprisingly opening, cracking pressure is typically set at oil cylinder rated operating pressure, it is contemplated that the tune of balanced valve
Constant-pressure and the biggish piston area ratio (rodless cavity/rod chamber) of Double Acting Telescopic Hydraulic Cylinder are arranged at the debugging initial stage of oil cylinder
Gas is insufficient, or in the case where unexpected random cylinder, can generate hydraulic cylinder rod chamber superpressure when hydraulic cylinder stretches out, cause when serious
Hydraulic cylinder damage.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide one kind to be used for Double Acting Telescopic Hydraulic Cylinder
Pin-lift arrangement, can effectively solve under the action of pressure difference, pin-lift arrangement leads to the problem of malfunction.
To achieve the above objectives, the technical solution adopted by the present invention is that:
A kind of pin-lift arrangement for Double Acting Telescopic Hydraulic Cylinder, comprising:
Top stem casing, it is interior to be equipped with the first receiving portion；
First mandril is fixed in first receiving portion, and first mandril can be round-trip in the first receiving portion
It is mobile, and first mandril is additionally provided with the second receiving portion；
Second mandril is arranged in second receiving portion, and second mandril can be past in second receiving portion
Return movement, when round-trip described in the second mandril can at least partly be located at outside second receiving portion, and second mandril edge
It is axially arranged with through-hole；
Locking mechanism is used to open and release the lock that first mandril moves back and forth in first receiving portion
It is fixed；
First driving device is set in first receiving portion, and the first driving device is for driving described first
Mandril is mobile towards the direction locked by the locking mechanism；And
Second driving device is set in second receiving portion, and second driving device is for driving described second
Mandril is mobile, and the locking mechanism is made to lock first mandril.
Based on the above technical solution, the first driving device includes:
First spring base is fixed at the end of first receiving portion；
First spring is set on first mandril, and first spring one end is supported in first spring
On seat, the other end is supported on first mandril, makes the first mandril pressure holding on first receiving portion.
Based on the above technical solution, first mandril includes:
Ejection part is sheathed in first spring；
Main part comprising support end, the end that supports is pressed on first receiving portion by first spring.
Based on the above technical solution, first receiving portion is in stepped hole shape, and first receiving portion includes one
Step surface, the end that supports are pressed on the step surface by first spring.
Based on the above technical solution, sealing ring is equipped between the main part and the inner wall of the top stem casing.
Based on the above technical solution, the locking mechanism includes:
Mounting hole, along being arranged radially for first mandril, the mounting hole is equipped with steel ball；
First groove is located on the inner wall of the top stem casing, and first groove is configured to: when the steel ball is located at
When in first groove, the steel ball moves back and forth in first receiving portion for limiting first mandril；
Second groove is located on the outer wall of second mandril, and second groove is configured to: when the steel ball position
When in second groove, first mandril can move back and forth in first receiving portion.
Based on the above technical solution, second driving device includes:
Second spring seat is fixed at the end of second receiving portion；
Second spring, one end support on the second spring seat, and the other end supports on second mandril.
Based on the above technical solution, the pin-lift arrangement further includes the first snap ring, and the first snap ring setting exists
The side of first spring base, for being limited to first mandril.
Based on the above technical solution, the pin-lift arrangement further includes the second snap ring, and the second snap ring setting exists
The side of second mandril, for being limited to second mandril.
Compared with the prior art, the advantages of the present invention are as follows:
The pin-lift arrangement for Double Acting Telescopic Hydraulic Cylinder in the present invention, due to using the second top for being provided with axially extending bore
Bar, so that no matter whether there is or not the effect of oil pressure, the second mandril is under spring force always in extended position and by steel
Pearl is pushed out in the first groove of top stem casing, so that the first mandril is extremely immovable in top stem casing internal lock.When external force pushes second
When mandril retracts, steel ball is sunk in the second groove of the second mandril, and the first mandril unlocks with top stem casing, can be in external force
Lower retraction.When external force releases, the first mandril, the second mandril successively stretch out under spring force.To efficiently solve
Under the action of pressure difference, pin-lift arrangement leads to the problem of malfunction, convenient and practical, reliable performance.
Detailed description of the invention
Fig. 1 is the structural schematic diagram when pin-lift arrangement in the embodiment of the present invention for Double Acting Telescopic Hydraulic Cylinder is self-locking；
Fig. 2 is that the structure when pin-lift arrangement in the embodiment of the present invention for Double Acting Telescopic Hydraulic Cylinder is retracted by external force is shown
It is intended to.
In figure: 1- top stem casing, the first receiving portion 11-, the first mandril of 2-, the second receiving portion 21-, 22- ejection part, 23- master
Body portion, 24- support end, the second mandril of 3-, 31- through-hole, 4- locking mechanism, 41- mounting hole, 42- steel ball, the first groove of 43-,
The second groove of 44-, 5- first driving device, the first spring base of 51-, the first spring of 52-, the second driving device of 6-, the second bullet of 61-
Spring abutment, 62- second spring, 7- sealing ring, the first snap ring of 8-, the second snap ring of 9-.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and embodiments.
Shown in Figure 1, the embodiment of the present invention provides a kind of pin-lift arrangement for Double Acting Telescopic Hydraulic Cylinder, including top
Rod set 1, the first mandril 2, the second mandril 3, locking mechanism 4, first driving device 5 and the second driving device 6.
Wherein, top stem casing 1, it is interior to be equipped with the first receiving portion 11；
First mandril 2 is fixed in the first receiving portion 11, and the first mandril 2 can move back and forth in the first receiving portion 11
It is dynamic, and the first mandril 2 is additionally provided with the second receiving portion 21.
Second mandril 3 is arranged in the second receiving portion 21, and the second mandril 3 can move back and forth in the second receiving portion 21,
The second mandril 3 can at least partly be located at outside the second receiving portion 21 when round-trip, and the second mandril 3 is axially arranged with through-hole along it
31。
Locking mechanism 4 is used to open and release the locking that the first mandril 2 moves back and forth in the first receiving portion 11.
As a preferable embodiment, locking mechanism 4 includes: in the present embodiment
Mounting hole 41, along being arranged radially for the first mandril 2, mounting hole 41 is equipped with steel ball 42；
First groove 43 is located on the inner wall of top stem casing 1, and the first groove 43 is configured to: when steel ball 42 is located at first
When in groove 43, steel ball 42 moves back and forth in the first receiving portion 11 for limiting the first mandril 2；
Second groove 44 is located on the outer wall of the second mandril 3, and the second groove 44 is configured to: when steel ball 42 is located at the
When in two grooves 44, the first mandril 2 can move back and forth in the first receiving portion 11.
First driving device 5 is set in the first receiving portion 11, and first driving device 5 is for driving the first mandril 2 towards quilt
The direction that locking mechanism 4 locks is mobile.
As a preferable embodiment, the first driving device 5 in the present embodiment includes:
First spring base 51 is fixed at the end of the first receiving portion 11；
First spring 52 is set on the first mandril 2, and 52 one end of the first spring supports on the first spring base 51,
The other end supports on the first mandril 2, makes the pressure holding of the first mandril 2 on the first receiving portion 11.
Further, the first mandril 2 includes:
Ejection part 22 is sheathed in the first spring 52；
Main part 23 comprising support end 24, support end 24 and pressed on the first receiving portion 11 by the first spring 52.
Second driving device 6 is set in the second receiving portion 21, and the second driving device 6 is for driving the second mandril 3 to move
It is dynamic, so that locking mechanism 4 is locked the first mandril 2.
As a preferable embodiment, the second driving device 6 in the present embodiment includes:
Second spring seat 61 is fixed at the end of the second receiving portion 21；
Second spring 62, one end support on second spring seat 61, and the other end supports on the second mandril 3.
In addition, being equipped with sealing ring 7 between main part 23 and the inner wall of top stem casing 1 to play preferable sealing effect.
In order to limit to the first mandril 2, pin-lift arrangement further includes the first snap ring 8, and the first snap ring 8 is arranged in the first bullet
The side of spring abutment 51.
In order to limit to the second mandril 3, pin-lift arrangement further includes the second snap ring 9, and the setting of the second snap ring 9 is on the second top
The side of bar 3.
The principle of the pin-lift arrangement for Double Acting Telescopic Hydraulic Cylinder is introduced below:
First mandril 2 is pressed in top stem casing 1 using the first spring 52, is blocked by the first spring base 51 and the first snap ring 8
Fixed, the first mandril 2 can be axially moveable under the first spring 52 or external force in top stem casing 1, the first mandril 2 and top stem casing
1 is sealed using sealing ring 7, the second mandril 3 that can be moved along axis is coaxially installed in the first mandril 2, and use second
Snap ring 9 limits, and the second mandril 3 can be stretched out under 62 spring-force driven dual of second spring or be retracted under external force.Among the above
External force, in multistage hydraulic cylinder, be commonly referred to as next stage piston retract when, strike second be mounted in the same level piston
Mandril 3 is located at the part outside the second receiving portion 21 and generates.
There is steel ball 42 between top stem casing 1, the first mandril 2 and the second mandril 3, steel ball 42 is mounted in the first mandril 2 slightly
In mounting hole 41 greater than 42 diameter of steel ball, top stem casing 1 and the second mandril 3 are nearby machined at steel ball 42 and accommodate steel ball 42
The first groove 43 and the second groove 44, the second mandril 3 is axial to be provided with through-hole 31 its spring cavity is communicated with outside.
When steel ball 42 is sunk in the second groove 44 of the second mandril 3, the first mandril 2 can be moved in top stem casing 1 along axis
Dynamic, when steel ball 42 is sunk in the first groove 43 of top stem casing 1, the first mandril 2 and top stem casing 1 lock immovable.
In conclusion the pin-lift arrangement for Double Acting Telescopic Hydraulic Cylinder in the present invention, due to axial logical using being provided with
Second mandril 3 in hole, so that the second mandril 3 is in always under spring force to be stretched no matter whether there is or not the effect of oil pressure
Steel ball 42 is simultaneously pushed out in the first groove 43 of top stem casing 1 by out position, so that the first mandril 2 stubbornly refuses energy in 1 internal lock of top stem casing
It is mobile.When external force pushes the second mandril 3 to retract, steel ball 42 is sunk in the second groove 44 of the second mandril 3, the first mandril 2 with
Top stem casing 1 unlocks, and can retract under external force.When external force releases, the first mandril 2, the second mandril 3 are in spring masterpiece
It is successively stretched out under.To efficiently solve under the action of pressure difference, pin-lift arrangement leads to the problem of malfunction, facilitates reality
With reliable performance.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as protection of the invention
Within the scope of.The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (9)
1. a kind of pin-lift arrangement for Double Acting Telescopic Hydraulic Cylinder characterized by comprising
Top stem casing (1), it is interior to be equipped with the first receiving portion (11)；
First mandril (2) is fixed in first receiving portion (11), and first mandril (2) can be in the first receiving
Portion (11) moves back and forth, and first mandril (2) is additionally provided with the second receiving portion (21)；
Second mandril (3), in second receiving portion (21), second mandril (3) can be in second receiving for setting
Move back and forth in portion (21), when round-trip described in the second mandril (3) can at least partly be located at second receiving portion (21) outside,
And second mandril (3) is axially arranged with through-hole (31) along it；
Locking mechanism (4) is used to open and release first mandril (2) and moves back and forth in first receiving portion (11)
Locking；
First driving device (5) is set in first receiving portion (11), and the first driving device (5) is for driving institute
It is mobile towards the direction locked by the locking mechanism (4) to state the first mandril (2)；And
Second driving device (6) is set in second receiving portion (21), and second driving device (6) is for driving institute
The second mandril (3) movement is stated, the locking mechanism (4) is made to lock first mandril (2).
2. being used for the pin-lift arrangement of Double Acting Telescopic Hydraulic Cylinder as described in claim 1, which is characterized in that first driving
Device (5) includes:
First spring base (51) is fixed at the end of first receiving portion (11)；
First spring (52) is set on first mandril (2), and first spring (52) one end is supported described
On one spring base (51), the other end is supported on first mandril (2), makes the first mandril (2) pressure holding described first
On receiving portion (11).
3. being used for the pin-lift arrangement of Double Acting Telescopic Hydraulic Cylinder as claimed in claim 2, which is characterized in that first mandril
(2) include:
Ejection part (22) is sheathed in first spring (52)；
Main part (23) comprising support end (24), described support end (24) are pressed by first spring (52) described
On first receiving portion (11).
4. being used for the pin-lift arrangement of Double Acting Telescopic Hydraulic Cylinder as claimed in claim 3, it is characterised in that: first receiving
Portion (11) is in stepped hole shape, and first receiving portion (11) includes a step surface, and described support end (24) pass through first bullet
Spring (52) presses on the step surface.
5. being used for the pin-lift arrangement of Double Acting Telescopic Hydraulic Cylinder as claimed in claim 3, it is characterised in that: the main part
(23) sealing ring (7) are equipped between the inner wall of the top stem casing (1).
6. being used for the pin-lift arrangement of Double Acting Telescopic Hydraulic Cylinder as described in claim 1, which is characterized in that the locking mechanism
(4) include:
Mounting hole (41), along being arranged radially for the first mandril (2), the mounting hole (41) is equipped with steel ball (42)；
First groove (43) is located on the inner wall of the top stem casing (1), and first groove (43) is configured to: when described
Steel ball (42) be located at first groove (43) it is interior when, the steel ball (42) is for limiting first mandril (2) described the
It is moved back and forth in one receiving portion (11)；
Second groove (44) is located on the outer wall of second mandril (3), and second groove (44) is configured to: working as institute
State steel ball (42) be located at second groove (44) it is interior when, first mandril (2) can be past in first receiving portion (11)
Return movement.
7. being used for the pin-lift arrangement of Double Acting Telescopic Hydraulic Cylinder as described in claim 1, it is characterised in that: second driving
Device (6) includes:
Second spring seat (61) is fixed at the end of second receiving portion (21)；
Second spring (62), one end support on the second spring seat (61), and the other end is supported in second mandril (3)
On.
8. being used for the pin-lift arrangement of Double Acting Telescopic Hydraulic Cylinder as described in claim 1, it is characterised in that: the pin-lift arrangement
It further include the first snap ring (8), first snap ring (8) setting is in the side of first spring base (51), for described the
One mandril (2) is limited.
9. being used for the pin-lift arrangement of Double Acting Telescopic Hydraulic Cylinder as described in claim 1, it is characterised in that: the pin-lift arrangement
It further include the second snap ring (9), the second snap ring (9) setting is in the side of second mandril (3), for second top
Bar (3) is limited.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811160673.8A CN108953288A (en) | 2018-09-30 | 2018-09-30 | Pin-lift arrangement for Double Acting Telescopic Hydraulic Cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811160673.8A CN108953288A (en) | 2018-09-30 | 2018-09-30 | Pin-lift arrangement for Double Acting Telescopic Hydraulic Cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108953288A true CN108953288A (en) | 2018-12-07 |
Family
ID=64472775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811160673.8A Pending CN108953288A (en) | 2018-09-30 | 2018-09-30 | Pin-lift arrangement for Double Acting Telescopic Hydraulic Cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108953288A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439875B (en) * | 2019-06-28 | 2020-12-25 | 武汉船用机械有限责任公司 | Hydraulic oil cylinder for controlling load |
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| US20020056476A1 (en) * | 2000-11-14 | 2002-05-16 | Akira Oi | Cylinder valve assembly with check valve |
| CN103688065A (en) * | 2011-08-26 | 2014-03-26 | 克斯美库股份有限公司 | Cylinder device with force multiplication mechanism |
| JP2015042880A (en) * | 2013-08-26 | 2015-03-05 | パスカルエンジニアリング株式会社 | Fluid pressure cylinder |
| JP2016095021A (en) * | 2014-11-14 | 2016-05-26 | 株式会社コスメック | Cylinder device |
| CN105715781A (en) * | 2014-12-17 | 2016-06-29 | 腓特烈斯港齿轮工厂股份公司 | Hydraulic System For An Automatic Transmission |
| CN106232999A (en) * | 2014-06-04 | 2016-12-14 | 帕斯卡工程株式会社 | Fluid pressure cylinder and clamping device |
| CN207568968U (en) * | 2017-11-30 | 2018-07-03 | 中船重工重庆液压机电有限公司 | A kind of stroke valve module and multistage hydraulic cylinder |
| CN208935071U (en) * | 2018-09-30 | 2019-06-04 | 中国船舶重工集团公司第七一九研究所 | Pin-lift arrangement for Double Acting Telescopic Hydraulic Cylinder |
-
2018
- 2018-09-30 CN CN201811160673.8A patent/CN108953288A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020056476A1 (en) * | 2000-11-14 | 2002-05-16 | Akira Oi | Cylinder valve assembly with check valve |
| CN103688065A (en) * | 2011-08-26 | 2014-03-26 | 克斯美库股份有限公司 | Cylinder device with force multiplication mechanism |
| JP2015042880A (en) * | 2013-08-26 | 2015-03-05 | パスカルエンジニアリング株式会社 | Fluid pressure cylinder |
| CN106232999A (en) * | 2014-06-04 | 2016-12-14 | 帕斯卡工程株式会社 | Fluid pressure cylinder and clamping device |
| JP2016095021A (en) * | 2014-11-14 | 2016-05-26 | 株式会社コスメック | Cylinder device |
| CN105715781A (en) * | 2014-12-17 | 2016-06-29 | 腓特烈斯港齿轮工厂股份公司 | Hydraulic System For An Automatic Transmission |
| CN207568968U (en) * | 2017-11-30 | 2018-07-03 | 中船重工重庆液压机电有限公司 | A kind of stroke valve module and multistage hydraulic cylinder |
| CN208935071U (en) * | 2018-09-30 | 2019-06-04 | 中国船舶重工集团公司第七一九研究所 | Pin-lift arrangement for Double Acting Telescopic Hydraulic Cylinder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439875B (en) * | 2019-06-28 | 2020-12-25 | 武汉船用机械有限责任公司 | Hydraulic oil cylinder for controlling load |
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