CN106762968B - A kind of reversely telescopic multi-stage hydraulic cylinder - Google Patents
A kind of reversely telescopic multi-stage hydraulic cylinder Download PDFInfo
- Publication number
- CN106762968B CN106762968B CN201611250162.6A CN201611250162A CN106762968B CN 106762968 B CN106762968 B CN 106762968B CN 201611250162 A CN201611250162 A CN 201611250162A CN 106762968 B CN106762968 B CN 106762968B
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- Prior art keywords
- sleeve
- piston
- stage
- cylinder
- guide sleeve
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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
- F15B15/1428—Cylinders
-
- 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
- F15B15/1457—Piston rods
Abstract
The present invention discloses a kind of reversely telescopic multi-stage hydraulic cylinder, including outer cylinder, sleeve piston, sleeve spacer, first stage piston bar, one-level guide sleeve, sleeve cylinder bottom, second piston, inner spacing collar, second piston rod and two level guide sleeve, one-level guide sleeve is fixedly mounted on the end of outer cylinder；Outer cylinder cylinder bottom is provided with big chamber hydraulic fluid port a, and cylinder surface carries small chamber hydraulic fluid port b；Two level guide sleeve is arranged on one end of first stage piston bar, and first stage piston bar is connected through one-level guide sleeve, sleeve spacer with sleeve piston and sleeve cylinder bottom；Second piston rod connects through two level guide sleeve, inner spacing collar and second piston；The hydraulic oil that first stage piston bar inwall is axially arranged with for will enter from big chamber hydraulic fluid port a introduces the oilhole of the small chamber of work, is radially provided with the oil-through hole that the hydraulic oil for will enter from small chamber hydraulic fluid port b introduces the big chamber of work.Reverse function that the present invention realizes the first stage piston bar of Multi-stage cylinder and second piston rod stretches, it can meet that the reversely flexible of rotary drilling rig Counterboring apparatus requires.
Description
Technical field
The present invention relates to a kind of reversely telescopic multi-stage hydraulic cylinder, belong to hydraulic cylinder technical field.
Background technology
With ongoing high ferro construction in China etc. pull domestic demand project be in full swing and large-scale cityization construction,
The wide market demand is provided for rotary drilling rig.With the development of national economy, urbanization process will also be accelerated, and mature city changes
Making will increase considerably with the foundation engineering increased newly in new town construction, also will increase to the demand of rotary drilling rig.Each rotary digging
Rig producer is all carrying out the variation and the development of high-quality of product, promotes the renewal of rotary drilling rig associated hydraulic cylinder product
Regenerate, wherein one of the important core part of the squeezed oil cylinder of rotary drilling rig as rotary drilling rig extruding extender, its security, stably
Property is more exposed to the concern of users.
For existing conventional multistage hydraulic cylinder as shown in figure 1, it is two-stage hydraulic cylinder, big chamber leads to oily one-level（Intermediate sleeve）With
Second piston rod stretches out；The logical oil of small chamber, one-level（Intermediate sleeve）Retracted with second piston rod.This conventional flexible order, no
It can realize and require reversely flexible during hydraulic cylinder works.
The content of the invention
In view of the above-mentioned problems of the prior art, the present invention provides a kind of reversely telescopic multi-stage hydraulic cylinder, can be achieved
The first stage piston bar and second piston rod of Multi-stage cylinder stretch reverse function, can meet the reversely flexible of rotary drilling rig Counterboring apparatus
It is required that.
To achieve these goals, a kind of reversely telescopic multi-stage hydraulic cylinder, including outer cylinder, sleeve that the present invention uses
Piston, sleeve spacer, first stage piston bar, one-level guide sleeve, sleeve cylinder bottom, second piston, inner spacing collar, second piston rod and two
Level guide sleeve, the one-level guide sleeve are fixedly mounted on the end of outer cylinder；Outer cylinder cylinder bottom is provided with big chamber hydraulic fluid port a, cylinder body table
Face carries small chamber hydraulic fluid port b；Two level guide sleeve is arranged on one end of first stage piston bar, and first stage piston bar passes through one-level guide sleeve, set
Cylinder spacer is connected with sleeve piston and sleeve cylinder bottom；Second piston rod connects through two level guide sleeve, inner spacing collar and second piston；
The hydraulic oil that first stage piston bar inwall is axially arranged with for will enter from big chamber hydraulic fluid port a introduces second piston and two level guide sleeve shape
Into the small chamber of work oilhole, be radially provided with the hydraulic oil for will enter from small chamber hydraulic fluid port b and introduce sleeve cylinder bottom and two level work
The oil-through hole for the big chamber of work that plug is formed.
Preferably, the one-level guide sleeve is connected through a screw thread on outer cylinder, outer cylinder and one-level guide sleeve it
Between by rush curved anti-loose structure form carry out it is locking.
Preferably, the oilhole has two, is arranged symmetrically on first stage piston bar inwall.
Preferably, the oil-through hole has four, is evenly distributed on the same circumference of first stage piston bar inwall.
Compared with prior art, the invention has the advantages that：
1）Multistage hydraulic cylinder, it is compact-sized, bigger function can be played under effective installing space；
2）New oil channel structures, realize the first stage piston bar of Multi-stage cylinder and second piston rod stretches reverse function, enter
And realize the special duty requirements of main frame；
3）Oil path built-in, bigger installation activity space is provided for main frame installation, reduce outside oil circuit connection, improve
Reliability；
4）Flange connects, easy installation and removal；
5）High-strength material or the preferable sealing structure of sealing property can be used, it is met the harsher operating mode of main frame
Demand.
Brief description of the drawings
Fig. 1 is the structural representation that hydraulic cylinder is used on existing rotary drilling rig；
Fig. 2 is the structural representation of the present invention；
Fig. 3 stretches out for first stage piston bar of the present invention, the schematic diagram that second piston rod is retracted；
Fig. 4 retracts for first stage piston bar of the present invention, the schematic diagram that second piston rod stretches out.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figures 2 to 4, a kind of reversely telescopic multi-stage hydraulic cylinder, including outer cylinder 1, sleeve piston 2, sleeve every
Set 3, first stage piston bar 4, one-level guide sleeve 5, sleeve cylinder bottom 6, second piston 7, inner spacing collar 8, second piston rod 9 and two level are led
To set 10, the one-level guide sleeve 5 is fixedly mounted on the end of outer cylinder 1；The cylinder bottom of outer cylinder 1 is provided with big chamber hydraulic fluid port a, cylinder body table
Face carries small chamber hydraulic fluid port b；Two level guide sleeve 10 is arranged on one end of first stage piston bar 4, and first stage piston bar 4 passes through one-level guide sleeve
5th, sleeve spacer 3 is connected with sleeve piston 2 and sleeve cylinder bottom 6；Second piston rod 9 passes through two level guide sleeve 10, inner spacing collar 8 and two
Level piston 7 connects；The hydraulic oil that the inwall of first stage piston bar 4 is axially arranged with for will enter from big chamber hydraulic fluid port a introduces second piston 7
The oilhole of the small chamber of work formed with two level guide sleeve 10, it is radially provided with the hydraulic oil for will enter from small chamber hydraulic fluid port b and introduces
The oil-through hole for the big chamber of work that sleeve cylinder bottom 6 and second piston 7 are formed.
Preferably, the one-level guide sleeve 5 is connected through a screw thread on outer cylinder 1, outer cylinder 1 and one-level guide sleeve
It is locking by rushing curved anti-loose structure form progress between 5.
Preferably, the oilhole has two, is arranged symmetrically on the inwall of first stage piston bar 4.It is right on the inwall of first stage piston bar 4
Claim two oilholes of arrangement to make uniform force.Certainly, the quantity of oilhole can also be multiple.
Preferably, the oil-through hole has four, is evenly distributed on the same circumference of the inwall of first stage piston bar 4, effect is most
It is good.
The course of work：
The first reverse telescopic process：First stage piston bar（Intermediate sleeve）Stretch out, second piston rod is retracted
Oil cylinder is originated as shown in Fig. 2 when being introduced into the inner chamber of outer cylinder 1 from big chamber hydraulic fluid port a mouth oil-feeds, fluid, first to set
The thrust F1 of cylinder cylinder bottom 6 one to the right, makes first stage piston bar 4 stretch out to the right.Meanwhile as shown in figure 3, fluid passes through first stage piston
The cavity that oilhole inside bar 4 enters between first stage piston bar 4, second piston rod 9, at this moment, fluid to second piston 7 one to
Left thrust F2, makes second piston 7 retract to the left, be finally completed first stage piston bar 4 be in stretch state entirely, second piston rod is in
Full reduced state.
Second of reverse telescopic process：First stage piston bar（Intermediate sleeve）Retract, second piston rod stretches out
As shown in figure 4, fluid enters fashionable from small chamber hydraulic fluid port b mouths, fluid initially enters outer cylinder 1 and first stage piston bar 4（In
Between sleeve）Between cavity, and give the thrust F1 of sleeve piston 2 to the left, while fluid is from sleeve spacer 3 and first stage piston bar
Oil-through hole enter in the working chamber that sleeve cylinder bottom 6 and second piston 7 are formed, same gives the thrust F2 of sleeve cylinder bottom 6 to the left,
Thrust F1 and F2 effect, first stage piston bar 4（Intermediate sleeve）Withdraw to the left, final step piston rod 4（Intermediate sleeve）It is in
Full reduced state；Fluid in the working chamber that sleeve cylinder bottom 6 and second piston 7 are formed simultaneously, can give second piston rod 9 and two
The thrust F of level piston 7 to the right, so that second piston rod 9 stretches out to the right, finally makes second piston rod 9 be in full stretching state.
From said structure, the present invention uses new oil channel structures, realizes the first stage piston bar and two level of Multi-stage cylinder
Piston rod stretches reverse function, and then realizes the special duty requirements of main frame., can be effective meanwhile its is compact-sized
Under installing space, bigger function is played；Oil path built-in, bigger installation activity space is provided for main frame installation, is reduced
Outside oil circuit connection, improves reliability；Flange connects, easy installation and removal；Can use high-strength material or sealing property compared with
Good sealing structure, makes it meet the harsher duty requirements of main frame.
Claims (4)
1. a kind of reversely telescopic multi-stage hydraulic cylinder, it is characterised in that including outer cylinder（1）, sleeve piston（2）, sleeve spacer
（3）, first stage piston bar（4）, one-level guide sleeve（5）, sleeve cylinder bottom（6）, second piston（7）, inner spacing collar（8）, second piston rod
（9）And two level guide sleeve（10）,
The one-level guide sleeve（5）It is fixedly mounted on outer cylinder（1）End；Outer cylinder（1）Cylinder bottom is provided with big chamber hydraulic fluid port a, cylinder
Body surface face carries small chamber hydraulic fluid port b；
Two level guide sleeve（10）Installed in first stage piston bar（4）One end, first stage piston bar（4）Through one-level guide sleeve（5）, set
Cylinder spacer（3）With sleeve piston（2）With sleeve cylinder bottom（6）Connection；
Second piston rod（9）Through two level guide sleeve（10）, inner spacing collar（8）With second piston（7）Connection；
First stage piston bar（4）The hydraulic oil that inwall is axially arranged with for will enter from big chamber hydraulic fluid port a introduces second piston（7）With two
Level guide sleeve（10）The oilhole of the small chamber of work of formation, it is radially provided with the hydraulic oil for will enter from small chamber hydraulic fluid port b and introduces set
Cylinder cylinder bottom（6）And second piston（7）The oil-through hole of the big chamber of work of formation.
A kind of 2. reversely telescopic multi-stage hydraulic cylinder according to claim 1, it is characterised in that the one-level guide sleeve
（5）It is connected through a screw thread and is arranged on outer cylinder（1）On, outer cylinder（1）With one-level guide sleeve（5）Between by rushing curved anti-loose structure
Form carries out locking.
A kind of 3. reversely telescopic multi-stage hydraulic cylinder according to claim 1, it is characterised in that the oilhole has two,
It is arranged symmetrically in first stage piston bar（4）On inwall.
4. a kind of reversely telescopic multi-stage hydraulic cylinder according to claim 1, it is characterised in that the oil-through hole has four
It is individual, it is evenly distributed on first stage piston bar（4）On the same circumference of inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611250162.6A CN106762968B (en) | 2016-12-29 | 2016-12-29 | A kind of reversely telescopic multi-stage hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611250162.6A CN106762968B (en) | 2016-12-29 | 2016-12-29 | A kind of reversely telescopic multi-stage hydraulic cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106762968A CN106762968A (en) | 2017-05-31 |
| CN106762968B true CN106762968B (en) | 2018-03-20 |
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ID=58927996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611250162.6A Active CN106762968B (en) | 2016-12-29 | 2016-12-29 | A kind of reversely telescopic multi-stage hydraulic cylinder |
Country Status (1)
| Country | Link |
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| CN (1) | CN106762968B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113550957B (en) * | 2020-04-26 | 2024-02-06 | 北京机械设备研究所 | Two-stage synchronous hydraulic cylinder |
| CN112211877B (en) * | 2020-09-29 | 2022-04-01 | 燕山大学 | Multistage sleeve type double-acting sequential telescopic hydraulic cylinder |
| CN114370441A (en) * | 2021-12-30 | 2022-04-19 | 中船重工中南装备有限责任公司 | Two-stage telescopic oil cylinder with buffering function |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86101725A (en) * | 1986-03-20 | 1987-10-07 | 中国人民解放军第二炮兵工程设计研究所 | The double-stage double-acting hydraulic jack of center oil transportation |
| JP2000104249A (en) * | 1998-09-29 | 2000-04-11 | Nippon Steel Corp | Diameter enlarging device for steel pipe pile |
| CN203769654U (en) * | 2014-01-23 | 2014-08-13 | 武汉武船机电设备有限责任公司 | Construction device for extruding and expanding cast-in-place piles |
| CN105464585A (en) * | 2015-12-31 | 2016-04-06 | 贺德新 | Double-slewing gear and rotary-excavating squeezed-expansion drilling machine with same |
| CN105464076A (en) * | 2015-12-31 | 2016-04-06 | 贺德新 | Rotary expansion head and oil cylinder thereof |
| CN105484663A (en) * | 2016-01-04 | 2016-04-13 | 卿建辉 | Intelligent four-arm squeezing and expanding drilling machine |
| CN205591832U (en) * | 2016-04-01 | 2016-09-21 | 宏源中科（北京）基础工程有限公司 | Rotary digging, jostling and enlarging drill |
| CN205823787U (en) * | 2016-06-21 | 2016-12-21 | 徐州重型机械有限公司 | Twin-stage compound hydralic oil cylinder |
-
2016
- 2016-12-29 CN CN201611250162.6A patent/CN106762968B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86101725A (en) * | 1986-03-20 | 1987-10-07 | 中国人民解放军第二炮兵工程设计研究所 | The double-stage double-acting hydraulic jack of center oil transportation |
| JP2000104249A (en) * | 1998-09-29 | 2000-04-11 | Nippon Steel Corp | Diameter enlarging device for steel pipe pile |
| CN203769654U (en) * | 2014-01-23 | 2014-08-13 | 武汉武船机电设备有限责任公司 | Construction device for extruding and expanding cast-in-place piles |
| CN105464585A (en) * | 2015-12-31 | 2016-04-06 | 贺德新 | Double-slewing gear and rotary-excavating squeezed-expansion drilling machine with same |
| CN105464076A (en) * | 2015-12-31 | 2016-04-06 | 贺德新 | Rotary expansion head and oil cylinder thereof |
| CN105484663A (en) * | 2016-01-04 | 2016-04-13 | 卿建辉 | Intelligent four-arm squeezing and expanding drilling machine |
| CN205591832U (en) * | 2016-04-01 | 2016-09-21 | 宏源中科（北京）基础工程有限公司 | Rotary digging, jostling and enlarging drill |
| CN205823787U (en) * | 2016-06-21 | 2016-12-21 | 徐州重型机械有限公司 | Twin-stage compound hydralic oil cylinder |
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| Publication number | Publication date |
|---|---|
| CN106762968A (en) | 2017-05-31 |
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Denomination of invention: Reversely-telescopic type multi-stage hydraulic cylinder Effective date of registration: 20200605 Granted publication date: 20180320 Pledgee: Xugong Group Finance Co.,Ltd. Pledgor: XCMG XUZHOU XUGONG HYDRAULIC PARTS Co.,Ltd. Registration number: Y2020320000152 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
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Date of cancellation: 20201118 Granted publication date: 20180320 Pledgee: Xugong Group Finance Co.,Ltd. Pledgor: XCMG XUZHOU XUGONG HYDRAULIC PARTS Co.,Ltd. Registration number: Y2020320000152 |