CN207538845U - A kind of two-stage hydraulic cylinder - Google Patents
A kind of two-stage hydraulic cylinder Download PDFInfo
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- CN207538845U CN207538845U CN201720842015.1U CN201720842015U CN207538845U CN 207538845 U CN207538845 U CN 207538845U CN 201720842015 U CN201720842015 U CN 201720842015U CN 207538845 U CN207538845 U CN 207538845U
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 48
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000005065 mining Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 71
- 239000011148 porous material Substances 0.000 description 6
- 230000008093 supporting effect Effects 0.000 description 6
- 239000000178 monomer Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003032 molecular docking Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
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Abstract
A kind of two-stage hydraulic cylinder belongs to mining supports equipment technical field.Including two-level oil cylinder（4）, two level movable post（5）, second piston（7）And triple-use valve, two-level oil cylinder（4）It is vertically arranged, two level movable post（5）And second piston（7）It can slide up and down mounted on two-level oil cylinder（4）It is interior, second piston（7）With two-level oil cylinder（4）Between sealed set, it is characterised in that：The second piston（7）It is arranged on two level movable post（5）Upside, two level movable post（5）Downside pedestal is installed（1）And by two level movable post（5）Lower end sealing, two-level oil cylinder（4）Upper end be equipped with for the column cap of installing triple-use valve（8）.The two level movable post of this two-stage hydraulic cylinder is stretched out to downside, so as to ensure that two oil cylinders are not interfere with each other when setting two-level oil cylinder, simple in structure, the setting for two-stage oil cylinder provides condition, and sealed in the form of cylinder seal, movable post is collided the problem of being not in leakage.
Description
Technical field
A kind of two-stage hydraulic cylinder belongs to mining supports equipment technical field.
Background technology
Hydraulic prop is a kind of support equipment of new environment-friendly type, both can be mating for high-grade general with metal hinge top beam
It adopts with big gun using face timbering top plate and fully-mechanized mining working supporting end, also can individually do a column or other temporary supportings
With.Suspension type hydraulic prop and conventional monomer hydraulic prop belong to one kind of hydraulic prop, conventional monomer hydraulic prop
Using cylinder seal, movable post, which is not afraid of, collides with, but stroke is shorter, so as to cause the limited height of its supporting, needs to increase in lower end
Add and increase section to increase its height, to use the supporting of the mine of different height；Suspension type hydraulic prop is in external poured monomer
One kind of hydraulic prop, stroke is big, but movable post is used to seal, and movable post is by easy leakage of slightly colliding with.
Chinese utility model patent application No. is ZL201320568703.5 discloses a kind of floated two-stage stretching list
Body hydraulic prop, level-one oil cylinder is assemblied in two-level oil cylinder, it is achieved thereby that two-stage stretching, increases stroke height, still
In use, oil cylinder just will appear Leakage, working environment easy to pollute by slight impact.
Invention content
The technical problems to be solved in the utility model is：A kind of movable post is overcome the deficiencies of the prior art and provide to stretch to downside
Go out, the two-stage hydraulic cylinder so as to facilitate setting two-level oil cylinder.
Technical solution is used by the utility model solves its technical problem：The two-stage hydraulic cylinder, including two-level oil cylinder,
Two level movable post, second piston and triple-use valve, two-level oil cylinder is vertically arranged, and two level movable post and second piston can slide up and down
In two-level oil cylinder, sealed set between second piston and two-level oil cylinder, it is characterised in that：The second piston is arranged on
On the upside of two level movable post, pedestal on the downside of two level movable post is installed and seals the lower end of two level movable post, the upper end of two-level oil cylinder is set
It is useful for the column cap of installation triple-use valve.
Preferably, guide sleeve is equipped between the two level movable post and two-level oil cylinder, under the internal diameter on guide sleeve top is more than
The internal diameter in portion, guide sleeve top are set in two-level oil cylinder lower end and are fixedly connected with two-level oil cylinder, and the lower part of guide sleeve is set in
Two level movable post is outer and is slidably connected with two level movable post.
Preferably, locking mechanism is equipped between the two-level oil cylinder and two level movable post.
Preferably, the locking mechanism includes being arranged on fixing sleeve between guide sleeve and pedestal, fixing sleeve top with
Guide sleeve is fixedly connected, and the lower part of fixing sleeve is removably connect with pedestal.
Preferably, the pedestal is the cylinder of lower end closed, and the lower end of two level movable post is stretched into pedestal, in pedestal
Wall is equipped with pedestal link slot, also is provided with movable post link slot around two level movable post outer wall, pedestal link slot and movable post link slot surround
It is circular annular chamber into section, is equipped in annular chamber for by pedestal and the fixed steel wire of two level movable post, pedestal side to be equipped with
For wearing the notch of steel wire.
Preferably, the two-level spring for two level movable post to be pushed to reset, two level bullet are coaxially provided in the two level movable post
The upper end of spring is connected with column cap, and lower end is connected with pedestal.
Preferably, the downside of the column cap is equipped with spring installing port, and spring installing port is blind to be coaxially disposed with column cap
Hole, spring installing port is interior to be equipped with the connector being connected with two-level spring.
Preferably, the outer diameter of the lower part of the column cap is less than the outer diameter at middle part, and so as to form connecting portion, connecting portion stretches into
It is fixedly connected in two-level oil cylinder and with two-level oil cylinder.
Compared with prior art, advantageous effect possessed by the utility model is：
1st, the two level movable post of this two-stage hydraulic cylinder is stretched out to downside, so as to ensure two oil when setting two-level oil cylinder
Cylinder is not interfere with each other, simple in structure, and the setting for two-stage oil cylinder provides condition, and is sealed in the form of cylinder seal, movable post
Be collided the problem of being not in leakage, and can increase the stroke of hydraulic prop, does not need to setting and increases section.
2nd, guide sleeve can be oriented to two level movable post, so as to ensure that two level movable post only carries out axis side in lifting column
To movement, without occur radial direction displacement, can either ensure that supporting consolidates, but can avoid to two-level oil cylinder and two level work
Column damages.
3rd, fixing sleeve and pedestal removably connect, and so as to adjust the locking of two-stage hydraulic cylinder and opening, work as monomer
, can be easy to adjust as needed by two-stage hydraulic cylinder locking or opening when two-stage hydraulic cylinder is provided in hydraulic prop, and make
With conveniently.
4th, pedestal is connected with two level movable post by fixation with steel wire, easy to connect and be connected firmly.
5th, two-level spring can push two level movable post Rapid reset, so as to improve work efficiency.
Description of the drawings
Fig. 1 is the main view schematic cross-sectional view of hydraulic prop.
Fig. 2 is the partial enlarged view at A in Fig. 1.
Fig. 3 is the partial enlarged view at B in Fig. 1.
In figure：1st, pedestal 101, notch 2, fixing sleeve 3, guide sleeve 4, two-level oil cylinder 5, two level movable post 6,
Two-level spring 7, second piston 8, column cap 801, intercommunicating pore 802, triple-use valve mounting hole 9, first stage piston 10, one
Grade oil cylinder 11, level-one movable post 12, level-one spring 13, hand handle 14, plunger 15, head cover 16, pin 17, steel
Silk.
Specific embodiment
Fig. 1 ~ 3 are the most preferred embodiments of the utility model, and 1 ~ 3 pair of the utility model is done furtherly below in conjunction with the accompanying drawings
It is bright.
A kind of two-stage hydraulic cylinder, including two-level oil cylinder 4, two level movable post 5, second piston 7 and triple-use valve, two-level oil cylinder 4
Vertically arranged, two level movable post 5 and second piston 7 can slide up and down in two-level oil cylinder 4, second piston 7 and two level
Sealed set between oil cylinder 4, second piston 7 are arranged on 5 upside of two level movable post, and the downside of two level movable post 5 is equipped with pedestal 1 and will
The lower end sealing of two level movable post 5, the upper end of two-level oil cylinder 4 are equipped with the column cap 8 for installing triple-use valve.The two of this two-stage hydraulic cylinder
Grade movable post 5 is stretched out to downside, simple in structure so as to ensure that two oil cylinders are not interfere with each other when setting two-level oil cylinder 4, is two
The setting of grade oil cylinder provides condition, and is sealed in the form of cylinder seal, and it is not in asking for leakage that movable post, which is collided,
Topic, and the stroke of hydraulic prop can be increased, it does not need to setting and increases section.
The utility model is described further with reference to specific embodiment, however persons familiar with the art should
Solution, is to preferably explain here in connection with the detailed description that attached drawing provides, the structure of the utility model has necessarily had exceeded
These embodiments of limit, and for some equivalents or common approach, it is no longer described in detail herein, but still fall within this
The protection domain of application.
As shown in Fig. 1 ~ 3：The cylinder of 4 both ends open of two-level oil cylinder, two-level oil cylinder 4 are vertically arranged.Two level movable post 5 is also two
The cylinder of end opening, and the outer diameter of two level movable post 5 is slightly smaller than the internal diameter of two-level oil cylinder 4, two level movable post 5 is co-axially located at two level oil
In cylinder 4, and two level movable post 5 can sliding axially along two-level oil cylinder 4.Second piston 7 is also the cylinder of both ends open, second piston
7 are co-axially located in two-level oil cylinder 4, and second piston 7 and the inner wall sealing of two-level oil cylinder 4 are set, and second piston 7 can be along two level
Oil cylinder 4 slides axially, and second piston 7 is arranged on the upside of two level movable post 5, and the lower part of second piston 7 is stretched into two level movable post 5
And it is fixedly connected with two level movable post 5, second piston 7 and 5 synchronization lifting of two level movable post.
Two-level oil cylinder 4 is stretched out in the lower end of two level movable post 5, and pedestal 1 is arranged on the downside of two level movable post 5, and pedestal 1 is lower end seal
The cylinder closed, the lower end of two level movable post 5 are stretched into pedestal 1 and are fixedly connected, and close between pedestal 1 and two level movable post 5 with pedestal 1
Envelope setting, pedestal 1 is by the lower end closed of two level movable post 5, it is achieved thereby that hydraulic oil pushes the lifting column of two level movable post 5.
Locking mechanism is equipped between two-level oil cylinder 4 and two level movable post 5, locking mechanism is guide sleeve 3, and guide sleeve 3 is both ends
Open cylinder, the upper-end inner diameter of guide sleeve 3 are more than bottom diameter, and the upper end of guide sleeve 3 is set in the lower end of two-level oil cylinder 4 simultaneously
It is fixedly connected with two-level oil cylinder 4, the lower end of guide sleeve 3 is set in 5 outside of two level movable post, close between guide sleeve 3 and two level movable post 5
Envelope setting, and guide sleeve 3 can slide axially with two level movable post 5, guide sleeve 3 being oriented to two level movable post 5, avoid
The displacement of radial direction occurs during lifting column, not only ensure that the supporting of this hydraulic prop consolidated, but also to two level movable post 5 and two level oil
Cylinder 4 plays protective effect, and using effect is good.
Fixing sleeve 2 is equipped between guide sleeve 3 and pedestal 1, fixing sleeve 2 is the cylinder of both ends open, the lower end of guide sleeve 3
Outer diameter is less than the outer diameter of upper end, forms guide sleeve fixed part, the top outer diameter of pedestal 1 is less than the outer diameter of lower part, so as to form bottom
Seat fixed part, the upper end of fixing sleeve 2 is set in outside guide sleeve fixed part, and is passed through bolt and be fixedly connected with guide sleeve fixed part,
The lower end of fixing sleeve 2 is set on the outside of pedestal fixed part, and is passed through bolt and removably connect with pedestal fixed part.When needs make
When hydraulic prop stroke is smaller, guide sleeve 3 is fixedly connected with pedestal 1 by fixing sleeve 2, at this time two-stage hydraulic cylinder
Lengthening section can be regarded as, when the stroke of need hydraulic prop to be used is larger, fixing sleeve 2 and pedestal 1 are dismantled, so as to
The stroke of hydraulic prop is enough greatly increased, and easy to use, it is easy to adjust.
Pedestal 1 is equipped with pedestal link slot around inner wall, and 5 lower loop of two level movable post also is provided with movable post link slot around outer wall, and
Pedestal link slot and movable post link slot are encircled into section as circular annular chamber, and pedestal 1 and two level movable post 5 are by being arranged on pedestal
Link slot is connected with the fixation with steel wire in movable post link slot, and steel wire side is located in pedestal link slot, and opposite side is located at movable post company
It is easy to connect and be connected firmly in access slot.Notch 101 is equipped on the left of the middle part of pedestal 1, so as to facilitate laying steel wire.
Triple-use valve is mounted in column cap 8, and triple-use valve is connected with 5 inner cavity of two level movable post, is equipped in two level movable post 5 and is pushed two
The two-level spring 6 that grade movable post 5 resets, the upper end of two-level spring 6 is fixedly connected with the lower end of column cap 8, the lower end of two-level spring 6 and
Pedestal 1 is fixedly connected, and two-level spring 6 is coaxially disposed with two level movable post 5, so as to push 5 Rapid reset of two level movable post, is improved
Working efficiency, additionally it is possible to which the elastic force and the axis of two level movable post 5 for avoiding two-level spring 6 shifts.
Column cap 8 is vertically arranged cylinder, and the outer diameter of the lower end of column cap 8 is less than the outer diameter at middle part, so as to formed for
The connected connecting portion of two-level oil cylinder 4, the diameter of connecting portion are slightly smaller than the internal diameter of two-level oil cylinder 4.
The connecting portion of 8 lower end of column cap is stretched into two-level oil cylinder 4 and is welded with two-level oil cylinder 4, so as to complete two-level oil cylinder 4
Docking.
The lower end of column cap 8 is equipped with spring connector, and spring connector is the blind hole for being co-axially located at 8 end of column cap, bullet
Spring connecting hole is mainly used for the connection of two-level spring 6.
When mounted, the connector of " m " shape is equipped in lower springs installing port, two-level spring 6 and the middle part of connector are lived
Dynamic connection, the opening of connector are directed away from the side of column cap 8, and two ends of connector are fixed in spring installing port inner wall
On, it so as to facilitate the installation of two-level spring 6, and firmly installs, and the middle part of connector can limit two-level spring 6
Position.
Intercommunicating pore 801 is coaxially provided on column cap 8, the lower end of intercommunicating pore 801 is connected with the spring installing port of lower part, intercommunicating pore
801 diameter is less than the diameter of spring installing port, so as to facilitate the location and installation of connector.The middle part of column cap 8 is equipped with diameter
To triple-use valve mounting hole 802, the middle part of triple-use valve mounting hole 802 is connected with the middle part of intercommunicating pore 801, so as to facilitate triple-use valve
It is connected with level-one movable post 11 and 5 inner cavity of two level movable post.Triple-use valve is mounted in triple-use valve mounting hole 801.
A kind of hydraulic prop with above-mentioned two-stage hydraulic cylinder, including one-stage hydraulic cylinder, two-stage hydraulic cylinder and sets
Put the triple-use valve between one-stage hydraulic cylinder and two-stage hydraulic cylinder, one-stage hydraulic cylinder is arranged on the surface of two-stage hydraulic cylinder, and one
Grade hydraulic cylinder is connected, and connected with triple-use valve with the inner cavity of two-stage hydraulic cylinder, and the upside of one-stage hydraulic cylinder is equipped with head cover 15,
The downside of two-stage hydraulic cylinder is equipped with pedestal 1.The one-stage hydraulic cylinder of this hydraulic prop is arranged on the surface of two-stage hydraulic cylinder,
The stroke of common hydraulic prop is substantially increased, and does not need to setting and increases section, improves common monomer hydraulic
The use scope of pillar, and sealing effect is good, and will not due to movable post slight colliding with and there is a situation where oil leak, so as to
Enough better ensure that the clean and tidy of working environment.
One-stage hydraulic cylinder is arranged on the surface of two-stage hydraulic cylinder, and is coaxially disposed with two-stage hydraulic cylinder, one-stage hydraulic cylinder
It is connected with the inner cavity of two-stage hydraulic cylinder, so as to which when carrying out setting prop action, setting prop operation can be completed using a pumping plant.
One-stage hydraulic cylinder includes level-one oil cylinder 10, level-one movable post 11 and first stage piston 9.Level-one oil cylinder 10 is both ends open
Cylinder, level-one oil cylinder 10 is vertically arranged.Level-one movable post 11 is also the cylinder of both ends open, and the outer diameter of level-one movable post 11 is slightly smaller
In the internal diameter of level-one oil cylinder 10, level-one movable post 11 is co-axially located in level-one movable post 11, and level-one movable post 11 can be along level-one oil cylinder
10 slide axially.First stage piston 9 is also the cylinder of both ends open, and first stage piston 9 is co-axially located in level-one oil cylinder 10, level-one
The inner wall sealing of piston 9 and level-one oil cylinder 10 is set, and first stage piston 9 can sliding axially along level-one oil cylinder 10, first stage piston 9
The downside of level-one movable post 11 is arranged on, the top of first stage piston 9 is stretched into level-one movable post 11 and is fixedly connected with level-one movable post 11,
First stage piston 9 and 11 synchronization lifting of level-one movable post.
Level-one oil cylinder 10 is stretched out in the upper end of level-one movable post 11, and the upper end of level-one movable post 11 is equipped with plunger 14, and plunger 14 is set
It is set in level-one movable post 11 and with 11 inner wall sealing of level-one movable post.The lower part of head cover 15 be equipped with blind hole, level-one movable post 11 it is upper
End is stretched into the blind hole of head cover 15, and 14 top of plunger also is located in the blind hole of head cover 15.Head cover 15,11 level-one column of level-one movable post
Plug 14 is fixedly connected by being arranged on the pin 16 on right side.Level-one movable post 11 realizes the sealing of upper end by plunger 14, and leads to
It crosses head cover 15 and plays support action, so as to avoid that level-one movable post 11 is damaged, so as to influence the use of level-one movable post 11.
Hand handle 13, cylinder of the hand handle 13 for upper and lower ends opening, and hand are equipped between level-one movable post 11 and level-one oil cylinder 10
The diameter of 13 upper end is more than the diameter of lower end, the lower part of hand handle 13 be set in the upper end of level-one oil cylinder 10 and with level-one oil cylinder
10 are fixedly connected, and the top of hand handle 13 is slidably located on the outside of level-one movable post 11, and hand handle 13 and 11 sealed set of level-one movable post,
So as to being oriented to level-one movable post 11, avoid level-one movable post 11 that displacement radially occurs in lifting column, so as to influence to prop up
Effect is protected, and level-one movable post 11 and level-one oil cylinder 10 are damaged.The right side of hand handle 13 is equipped with for Handheld Division, so as to convenient
The movement and transport of this hydraulic prop.
Column cap 8 is equipped between level-one oil cylinder 10 and two-level oil cylinder 4, triple-use valve is connected with the inner cavity of level-one movable post 11.Level-one
The level-one spring 12 that level-one movable post 11 is pushed to reset is equipped in movable post 11, the upper end of level-one spring 12 is fixedly connected with plunger 14,
The lower end of level-one spring 12 is fixedly connected with the upper end of column cap 8, and level-one spring 12 is coaxially disposed with level-one movable post 11, so as to
11 Rapid reset of level-one movable post is pushed, provides high working efficiency, additionally it is possible to avoid the elastic force of level-one spring 12 and level-one movable post
11 axis shifts.
The upper end outer diameter of column cap 8 is less than the outer diameter at middle part, so as to form the connecting portion for being connected with level-one oil cylinder 10,
The diameter of connecting portion is slightly smaller than the internal diameter of level-one oil cylinder 10.
The connecting portion of 8 upper end of column cap is stretched into level-one oil cylinder 10 and with being welded in level-one oil cylinder 10, so as to complete level-one
Oil cylinder 10 and the docking of two-level oil cylinder 4, and avoid level-one oil cylinder 10 and two-level oil cylinder 4 interferes with each other.
The upper end of column cap 8 also is provided with spring connector, and spring connector is the blind hole for being co-axially located at 8 upper end of column cap, bullet
Spring connecting hole is used for the connection of level-one spring 12, and the spring installing port at 8 both ends of column cap is symmetrical arranged.
When mounted, the connector of " m " shape, the middle part of 12 connector of level-one spring also are provided in the spring installing port on top
Flexible connection, the opening of connector are directed away from the side of column cap 8, and two ends of connector are fixed in spring installing port inner wall
On, it so as to which level-one spring 12 be facilitated to install, and firmly installs, and the middle part of connector can limit level-one spring 12
Position.
The upper end of intercommunicating pore 801 is connected with the spring installing port on top, and lower end is connected with the spring installing port of lower part, connection
The diameter in hole 801 is less than the diameter of spring installing port, so as to facilitate the location and installation of connector, also simultaneously by level-one movable post
11 connect with the inner cavity of two level movable post 5.
The above descriptions are merely preferred embodiments of the present invention, is not to make other forms to the utility model
Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent
The equivalent embodiment of variation.But it is every without departing from the content of the technical scheme of the utility model, the technology according to the utility model is real
Any simple modification, equivalent variations and the remodeling that confrontation above example is made still fall within the guarantor of technical solutions of the utility model
Protect range.
Claims (8)
1. a kind of two-stage hydraulic cylinder, including two-level oil cylinder（4）, two level movable post（5）, second piston（7）And triple-use valve, two level oil
Cylinder（4）It is vertically arranged, two level movable post（5）And second piston（7）It can slide up and down mounted on two-level oil cylinder（4）It is interior, two level
Piston（7）With two-level oil cylinder（4）Between sealed set, it is characterised in that：The second piston（7）It is arranged on two level movable post（5）
Upside, two level movable post（5）Downside pedestal is installed（1）And by two level movable post（5）Lower end sealing, two-level oil cylinder（4）It is upper
End is equipped with the column cap for installing triple-use valve（8）.
2. two-stage hydraulic cylinder according to claim 1, it is characterised in that：The two level movable post（5）With two-level oil cylinder（4）
Between be equipped with guide sleeve（3）, guide sleeve（3）The internal diameter on top is more than the internal diameter of lower part, guide sleeve（3）Top is set in two level oil
Cylinder（4）Lower end and and two-level oil cylinder（4）It is fixedly connected, guide sleeve（3）Lower part be set in two level movable post（5）It lives outside and with two level
Column（5）It is slidably connected.
3. two-stage hydraulic cylinder according to claim 1, it is characterised in that：The two-level oil cylinder（4）With two level movable post（5）
Between be equipped with locking mechanism.
4. two-stage hydraulic cylinder according to claim 3, it is characterised in that：The locking mechanism includes being arranged on guide sleeve
（3）With pedestal（1）Between fixing sleeve（2）, fixing sleeve（2）Top and guide sleeve（3）It is fixedly connected, fixing sleeve（2）Lower part
With pedestal（1）Dismountable connection.
5. two-stage hydraulic cylinder according to claim 1, it is characterised in that：The pedestal（1）For the cylinder of lower end closed,
Two level movable post（5）Lower end stretch into pedestal（1）It is interior, around pedestal（1）Inner wall is equipped with pedestal link slot, around two level movable post（5）
Outer wall also is provided with movable post link slot, and pedestal link slot and movable post link slot are encircled into section as circular annular chamber, in annular chamber
Equipped with for by pedestal（1）With two level movable post（5）Fixed steel wire, pedestal（1）Side is equipped with the notch for wearing steel wire
（101）.
6. two-stage hydraulic cylinder according to claim 1, it is characterised in that：The two level movable post（5）Inside it is coaxially provided with use
In promotion two level movable post（5）The two-level spring of reset（6）, two-level spring（6）Upper end and column cap（8）It is connected, lower end and pedestal
（1）It is connected.
7. two-stage hydraulic cylinder according to claim 6, it is characterised in that：The column cap（8）Downside equipped with spring pacify
Mouth is filled, spring installing port is and column cap（8）The blind hole of coaxial arrangement, is equipped in spring installing port and two-level spring（6）Connected
Connector.
8. two-stage hydraulic cylinder according to claim 1, it is characterised in that：The column cap（8）The outer diameter of lower part be less than
The outer diameter at middle part, so as to form connecting portion, connecting portion stretches into two-level oil cylinder（4）Interior and and two-level oil cylinder（4）It is fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720842015.1U CN207538845U (en) | 2017-07-12 | 2017-07-12 | A kind of two-stage hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720842015.1U CN207538845U (en) | 2017-07-12 | 2017-07-12 | A kind of two-stage hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207538845U true CN207538845U (en) | 2018-06-26 |
Family
ID=62607572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720842015.1U Active CN207538845U (en) | 2017-07-12 | 2017-07-12 | A kind of two-stage hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207538845U (en) |
-
2017
- 2017-07-12 CN CN201720842015.1U patent/CN207538845U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A two-stage hydraulic cylinder Effective date of registration: 20211026 Granted publication date: 20180626 Pledgee: Zibo Zichuan District sub branch of China Post Savings Bank Co.,Ltd. Pledgor: SHANDONG HANYE MACHINERY Co.,Ltd. Registration number: Y2021980011280 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231222 Granted publication date: 20180626 Pledgee: Zibo Zichuan District sub branch of China Post Savings Bank Co.,Ltd. Pledgor: SHANDONG HANYE MACHINERY Co.,Ltd. Registration number: Y2021980011280 |