CN208138245U - A kind of multistage hydraulic cylinder - Google Patents
A kind of multistage hydraulic cylinder Download PDFInfo
- Publication number
- CN208138245U CN208138245U CN201820632558.5U CN201820632558U CN208138245U CN 208138245 U CN208138245 U CN 208138245U CN 201820632558 U CN201820632558 U CN 201820632558U CN 208138245 U CN208138245 U CN 208138245U
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- oil inlet
- inlet pipe
- oil
- cylinder
- pipe
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Abstract
The utility model discloses a kind of multistage hydraulic cylinders,It is related to hydraulic cylinder technical field,It is single to solve multiple hydraulic stems stretching modes in existing multistage hydraulic cylinder,Caused by energy cannot duplicate effective use and the big problem of required hydraulic medium amount,The utility model includes the outer shell for being internally provided with inner casing,Hydraulic stem is provided in inner casing,Outer shell bottom offers oil outlet,Outer shell inner bottom surface is provided with oil inlet pipe a corresponding with oil outlet,Oil inlet a is offered on oil inlet pipe a tube wall,Inner casing bottom is provided with the oil inlet pipe b with oil inlet pipe a coaxial line,Sealing mechanism is provided at oil inlet pipe a,The cylinder with oil inlet pipe a coaxial line is provided in oil outlet,The cylinder body of rod is arranged with the block for realizing oil inlet a opening and closing in the part protruded into oil inlet pipe a,Oil transportation mouth is offered on block vertically,The pipe close mechanism for opening and closing oil inlet pipe b is provided in oil inlet pipe b bottom interior wall,Pipe close mechanism connect cooperation with cylinder body of rod top.
Description
Technical field
The utility model relates to hydraulic cylinder technical fields, more particularly to a kind of multistage hydraulic cylinder.
Background technique
Hydraulic cylinder is the executive component in Hydraulic Power Transmission System, it is the energy converting means for hydraulic energy being converted into mechanical energy
It sets, realizes the reciprocating motion of hydraulic stem.The structural shape of hydraulic cylinder has piston cylinder, plunger case, an oscillating cylinder three categories, piston cylinder and
Plunger case realizes linear reciprocating motion, output speed and thrust, and oscillating cylinder realizes reciprocally swinging, output angular velocity (revolving speed) and turn
Square.Hydraulic cylinder to combine two or morely or can get up use other than individually use with other Mechanism Combinations
To complete special function.Hydraulic cylinder structure is simple, reliable operation, is widely used in the hydraulic system of lathe.
The stroke of usual Normal hydraulic cylinder is fixed, the i.e. length of hydraulic cylinder, in order to increase the stroke of hydraulic cylinder
Do not increase cylinder body length, multistage hydraulic cylinder occurs.Application No. is the utility model patents of CN201721220631.X to disclose
A kind of multistep speed regulation lifting hydraulic cylinder increases stroke using the body of rod that two coaxial lines are arranged, but its function mode is single,
Level-one hydraulic stem can only successively be stretched out with 2-level hydraulic bar, can only be by level-one hydraulic stem when not needing two bodies of rod and stretching out
(at this point, 2-level hydraulic bar is located inside level-one hydraulic stem) is stretched out together with 2-level hydraulic bar, which adds entire bars
Body self weight does not utilize the effective use of hydraulic cylinder energy, while hydraulic medium amount required for the stretching of level-one hydraulic stem is also long-range
In 2-level hydraulic bar.So it is solution that 2-level hydraulic bar how can be allowed, which directly to stretch out, when not needing two bodies of rod and stretching out
The certainly key of problem above.
Utility model content
The purpose of this utility model is that：Mode list is stretched out in order to solve multiple hydraulic stems in the above existing multistage hydraulic cylinder
One, caused by energy cannot duplicate effective use and the big problem of required hydraulic medium amount, the utility model one kind is provided
Multistage hydraulic cylinder.
The utility model specifically uses following technical scheme to achieve the goals above：
A kind of multistage hydraulic cylinder, the outer shell including being internally provided with inner casing are provided with hydraulic stem in inner casing, and outer shell bottom is opened
Equipped with oil outlet, outer shell inner bottom surface is provided with oil inlet pipe a corresponding with oil outlet, offers oil inlet on oil inlet pipe a tube wall
A, inner casing bottom are provided with the oil inlet pipe b with oil inlet pipe a coaxial line, and oil inlet pipe b internal diameter is greater than oil inlet pipe a outer diameter, at oil inlet pipe a
It is provided with sealing mechanism, the cylinder with oil inlet pipe a coaxial line is provided in oil outlet, the cylinder body of rod is protruding into oil inlet pipe a
Part is arranged with the block for realizing oil inlet a opening and closing, offers oil transportation mouth vertically on block, is arranged in oil inlet pipe b bottom interior wall
There is the pipe close mechanism for opening and closing oil inlet pipe b, pipe close mechanism connect cooperation with cylinder body of rod top.
Further, sealing mechanism includes the cushion block that the periphery oil inlet pipe a is arranged, and offers on cushion block and is connected to oil inlet a
Oil inlet b, cushion block upper surface is provided with can be with the bottom end oil inlet pipe b face contact gasket；It is set on oil inlet pipe b bottom end inner wall
It is equipped with the sealing ring that can cooperate with oil inlet pipe a top exterior walls, thickness of sealing ring is sequentially increased from top to bottom.
Further, pipe close mechanism includes the inner sleeve being arranged on oil inlet pipe b inner wall, the cylinder of inner sleeve top half
Above circumferentially uniform to offer several vertical notches, notch top end face is connected to oil inlet pipe b, and inner sleeve is internally provided with level
Baffle, horizontal baffle lower surface can cooperate with cylinder body of rod tip contact, and horizontal baffle edge and inner sleeve inner wall are in close contact,
It is provided with fixed ring flat-plate on inner sleeve inner wall below horizontal baffle, is provided with spring between fixed ring flat-plate and horizontal baffle.
Further, the limit for being limited to block is provided in oil inlet a both up and down inside oil inlet pipe a
Ring flat-plate.
Further, the groove offered circumferential on the inner wall of outer shell top, inner casing bottom, which offers, to be cooperated with groove
Oil inlet c, the vertical length of groove is greater than oil inlet c diameter.
Further, the outer shell cylinder body contact position of the cylinder body of rod and oil outlet is provided with sealing loop mechanism, block circumference
The sealing loop mechanism that sealing can be contacted with oil inlet pipe a inner wall is circumferentially provided on face.
The beneficial effects of the utility model are as follows：
1, the present apparatus controls block using cylinder and pipe close mechanism opens and closes oil inlet a and oil inlet pipe b, realizes control
Hydraulic medium respectively enters oil pocket a and oil pocket b, and then realizes that whole cylinder bodies of multistage hydraulic cylinder normally stretch out and hydraulic stem
It individually stretches out, realizes different function modes, meet different use demands.
2, the sealing between oil inlet pipe a and oil inlet pipe b may be implemented in cushion block and gasket, while also functioning to and declining to inner casing
The buffer function made prevents oil inlet pipe b from impacting with outer shell bottom surface.
3, limit ring flat-plate can the displacement of anti-stop block excessively, cause device that cannot run well.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the partial schematic diagram in Fig. 1 at A；
Fig. 3 is state diagram when hydraulic stem individually stretches out in the utility model；
Fig. 4 is state diagram when inner casing stretches out in the utility model；
Appended drawing reference：1- hydraulic stem, 2- inner casing, 3- groove, 4- outer shell, 5- oil pocket b, 6- oil inlet c, 7- oil inlet pipe b, 8-
Oil pocket a, 9- oil outlet, 10- cylinder, 11- inner sleeve, 12- notch, 13- horizontal baffle, 14- spring, the fixed ring flat-plate of 15-, 16-
Sealing ring, 17- oil inlet pipe a, 18- gasket, 19- oil inlet a, 20- cushion block, 21- block, 22- oil transportation mouth, 23- sealing ring machine
Structure, 24- limit ring flat-plate, 25- oil inlet b.
Specific embodiment
In order to which those skilled in the art better understand the utility model, with reference to the accompanying drawing with following embodiment to this
Utility model is described in further detail.
Embodiment 1
A kind of multistage hydraulic cylinder, the outer shell 4 including being internally provided with inner casing 2 are provided with hydraulic stem 1, outer shell 4 in inner casing 2
Bottom offers oil outlet 9, and 4 inner bottom surface of outer shell is provided with oil inlet pipe a17 corresponding with oil outlet 9, on oil inlet pipe a17 tube wall
Offer oil inlet a19,2 bottom of inner casing is provided with the oil inlet pipe b7 with oil inlet pipe a17 coaxial line, oil inlet pipe b7 internal diameter be greater than into
Oil pipe a17 outer diameter is provided with sealing mechanism at oil inlet pipe a17, the cylinder with oil inlet pipe a17 coaxial line is provided in oil outlet 9
10,10 body of rod of cylinder is arranged with the block 21 for realizing oil inlet a19 opening and closing in the part protruded into oil inlet pipe a17, on block 21
Oil transportation mouth 22 is offered vertically, the pipe close mechanism for opening and closing oil inlet pipe b7, pipe close machine are provided in oil inlet pipe b7 bottom interior wall
Structure connect cooperation with 10 body of rod top of cylinder.
Working principle：When normal work, block 21, which moves down, opens oil inlet a19, and pipe close mechanism closes oil inlet pipe b7, is situated between
Matter is entered in oil pocket a8 by oil inlet a19 rises inner casing 2, and then hydraulic stem 1 successively rises；When needing hydraulic stem 1 independent
When rise, the rising of block 21 closes oil inlet a19, and pipe close mechanism opening, medium is entered in oil pocket b5 by oil inlet pipe b7 and made
Hydraulic stem 1 individually rises.
The present apparatus opens and closes oil inlet a and oil inlet pipe b with pipe close mechanism using cylinder control block, realizes control liquid
Pressure medium respectively enters oil pocket a and oil pocket b, and then whole cylinder bodies of realization multistage hydraulic cylinder normally stretch out and the list of hydraulic stem
It solely stretches out, realizes different function modes, meet different use demands.
Embodiment 2
The present embodiment is to improve on the basis of embodiment 1：
Sealing mechanism includes the cushion block 20 that the periphery oil inlet pipe a17 is arranged, and offers on cushion block 20 and is connected to oil inlet a19
Oil inlet b256,20 upper surface of cushion block is provided with can be with the bottom end oil inlet pipe b7 face contact gasket 18；Oil inlet pipe b7 bottom end
The sealing ring 16 that can cooperate with oil inlet pipe a17 top exterior walls is provided on inner wall, 16 thickness of sealing ring is sequentially increased from top to bottom.
The above advantage of improving is：The sealing between oil inlet pipe a and oil inlet pipe b may be implemented in cushion block and gasket, simultaneously
It also functions to and the buffer function made is declined to inner casing, prevent oil inlet pipe b from impacting with outer shell bottom surface.
Embodiment 3
The present embodiment is to improve on the basis of embodiment 1：
Pipe close mechanism includes the inner sleeve 11 being arranged on oil inlet pipe b7 inner wall, cylinder last week of 11 top half of inner sleeve
To several vertical notches 12 are uniformly offered, 12 top end face of notch is connected to oil inlet pipe b7, and inner sleeve 11 is internally provided with
Horizontal baffle 13,13 lower surface of horizontal baffle can cooperate with 10 body of rod tip contact of cylinder, 13 edge of horizontal baffle and inner sleeve
11 inner walls are in close contact, and fixed ring flat-plate 15, fixed ring flat-plate 15 and water are provided on 11 inner wall of inner sleeve of 13 lower section of horizontal baffle
Spring 14 is provided between flat baffle 13.
Working principle：When hydraulic stem 1 individually stretches out, control 10 body of rod of cylinder stretches out, and 10 body of rod top of cylinder drives horizontal
Baffle 13 rises, and so that horizontal baffle 13 is moved to the middle section of 12 length of notch, the medium in oil inlet pipe a17 enters oil inlet pipe b7
In, and entered in the oil inlet pipe b7 above horizontal baffle 13 by notch 12, and then by entering in oil pocket b5, realize hydraulic stem
1 independent stretching.
Embodiment 4
The present embodiment is to improve on the basis of embodiment 1：
The stop collar for being limited to block 21 is provided in oil inlet a19 both up and down inside oil inlet pipe a17
Plate 24.
The above advantage of improving is：Limit ring flat-plate can the displacement of anti-stop block excessively, cause device that cannot run well.
Embodiment 5
The present embodiment is to improve on the basis of embodiment 1：
The circumferential groove 3 offered on 4 top inner wall of outer shell, 2 bottom of inner casing offer the oil inlet that can cooperate with groove 3
The vertical length of mouth c6, groove 3 are greater than oil inlet c6 diameter.
Embodiment 6
The present embodiment is to improve on the basis of embodiment 1：
4 cylinder body contact position of outer shell at 10 body of rod of cylinder and oil outlet 9 is provided with sealing loop mechanism 23,21 periphery of block
Upper circumferential direction is provided with the sealing loop mechanism 23 that sealing can be contacted with oil inlet pipe a17 inner wall.
The above, the only preferred embodiment of the utility model, are not intended to limit the utility model, the utility model
Scope of patent protection be subject to claims, it is equivalent made by all specifications and accompanying drawing content with the utility model
Structure change similarly should be included in the protection scope of the utility model.
Claims (6)
1. a kind of multistage hydraulic cylinder, the outer shell (4) including being internally provided with inner casing (2) is provided with hydraulic stem (1) in inner casing (2),
It is characterized in that：Outer shell (4) bottom offers oil outlet (9), and outer shell (4) inner bottom surface is provided with corresponding with oil outlet (9)
Oil inlet pipe a (17) is offered oil inlet a (19) on oil inlet pipe a (17) tube wall, and inner casing (2) bottom is provided with and oil inlet pipe a (17)
The oil inlet pipe b (7) of coaxial line, oil inlet pipe b (7) internal diameter are greater than oil inlet pipe a (17) outer diameter, and oil inlet pipe a is provided with sealing at (17)
Mechanism, the interior cylinder (10) being provided with oil inlet pipe a (17) coaxial line of oil outlet (9), cylinder (10) body of rod are protruding into oil inlet pipe a
(17) part in is arranged with the block (21) for realizing oil inlet a (19) opening and closing, and block offers oil transportation mouth on (21) vertically
(22), the pipe close mechanism for opening and closing oil inlet pipe b (7), pipe close mechanism and cylinder are provided in oil inlet pipe b (7) bottom interior wall
(10) body of rod top connection cooperation.
2. multistage hydraulic cylinder according to claim 1, it is characterised in that：Sealing mechanism includes that oil inlet pipe a (17) are arranged outside
The cushion block (20) enclosed offers the oil inlet b (25) being connected to oil inlet a (19) on cushion block (20), and cushion block (20) upper surface is set
Being equipped with can be with oil inlet pipe b (7) bottom end face contact gasket (18)；Being provided on oil inlet pipe b (7) bottom end inner wall can be with oil inlet
The sealing ring (16) of pipe a (17) top exterior walls cooperation, sealing ring (16) thickness are sequentially increased from top to bottom.
3. multistage hydraulic cylinder according to claim 1, it is characterised in that：Pipe close mechanism includes setting in oil inlet pipe b (7)
Inner sleeve (11) on wall, it is circumferentially uniform on the cylinder of inner sleeve (11) top half to offer several vertical notches
(12), notch (12) top end face is connected to oil inlet pipe b (7), and inner sleeve (11) is internally provided with horizontal baffle (13), horizontal baffle
(13) lower surface can cooperate with cylinder (10) body of rod tip contact, and horizontal baffle (13) edge closely connects with inner sleeve (11) inner wall
It touches, is provided with fixed ring flat-plate (15) on inner sleeve (11) inner wall below horizontal baffle (13), fixed ring flat-plate (15) and horizontal gear
Spring (14) are provided between plate (13).
4. multistage hydraulic cylinder according to claim 1, it is characterised in that：Oil inlet pipe a (17) is internal on oil inlet a (19)
Lower two sides are provided with the limit ring flat-plate (24) for being limited to block (21).
5. multistage hydraulic cylinder according to claim 1, it is characterised in that：It is circumferential on the inner wall of outer shell (4) top to offer
Groove (3), inner casing (2) bottom offers the oil inlet c (6) that can cooperate with groove (3), and the vertical length of groove (3) be greater than
Oil inlet c (6) diameter.
6. multistage hydraulic cylinder according to claim 1, it is characterised in that：It is outer at cylinder (10) body of rod and oil outlet (9)
Cylinder (4) cylinder body contact position is provided with sealing loop mechanism (23), and being circumferentially provided on block (21) periphery can be with oil inlet pipe a (17)
The sealing loop mechanism (23) of inner wall contact sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820632558.5U CN208138245U (en) | 2018-04-28 | 2018-04-28 | A kind of multistage hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820632558.5U CN208138245U (en) | 2018-04-28 | 2018-04-28 | A kind of multistage hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208138245U true CN208138245U (en) | 2018-11-23 |
Family
ID=64311758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820632558.5U Expired - Fee Related CN208138245U (en) | 2018-04-28 | 2018-04-28 | A kind of multistage hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208138245U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115289098A (en) * | 2022-09-30 | 2022-11-04 | 苏州鑫旭合智能科技有限公司 | Self-cleaning cooling type multistage self-locking large hydraulic device and working method |
-
2018
- 2018-04-28 CN CN201820632558.5U patent/CN208138245U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115289098A (en) * | 2022-09-30 | 2022-11-04 | 苏州鑫旭合智能科技有限公司 | Self-cleaning cooling type multistage self-locking large hydraulic device and working method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181123 |