CN105047446B - Hydraulic bjuffer and the breaker operation mechanism using the hydraulic bjuffer - Google Patents
Hydraulic bjuffer and the breaker operation mechanism using the hydraulic bjuffer Download PDFInfo
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- CN105047446B CN105047446B CN201510366406.6A CN201510366406A CN105047446B CN 105047446 B CN105047446 B CN 105047446B CN 201510366406 A CN201510366406 A CN 201510366406A CN 105047446 B CN105047446 B CN 105047446B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 39
- 239000010720 hydraulic oil Substances 0.000 description 27
- 238000013016 damping Methods 0.000 description 14
- 230000005540 biological transmission Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
- H01H3/605—Mechanical arrangements for preventing or damping vibration or shock making use of a fluid damper
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- Fluid-Damping Devices (AREA)
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Abstract
A kind of breaker operation mechanism the present invention relates to hydraulic bjuffer and using the hydraulic bjuffer, the hydraulic bjuffer includes oil cylinder and the piston in oil cylinder, piston is connected with piston rod, the rod chamber of oil cylinder and the first passage of rodless cavity are communicated between piston and oil cylinder and/or on piston, piston slidable anticreep assembling vertically is on the piston rod, one end of the close rodless cavity of piston rod is provided with second channel, the first port of second channel is located on piston rod outer peripheral face, piston can be by inwall face closure first port when being moved with piston rod to rodless cavity, first port can be got out of the way when being moved with piston rod to rod chamber.The present invention solves the more assembling complexity of hydraulic bjuffer parts, causes the high technical problem of low production efficiency product cost.
Description
Technical field
A kind of breaker operation mechanism the present invention relates to hydraulic bjuffer and using the hydraulic bjuffer.
Background technology
Buffer is commonly used in high-voltage fence equipment for power transmission and distribution breaker power source spring operating mechanism, buffer is a kind of
The safety guard of rigid collision can be slowed down in the process of running, the buffering effect quality of buffer drastically influence open circuit
The performance indications of device.
There is the buffer using single cylinder structure and the double oil recess structures of inside and outside cylinder in the prior art, as date of publication is
2015.01.21, publication No. is a kind of double oil pocket knots of inside and outside cylinder disclosed in the A of CN 104299862 Chinese invention patent application
The buffer of structure, inner casing and coaxial line that the buffer extends along the longitudinal direction including axis are set in the outer shell of inner casing periphery,
There is annular gap between inner casing and outer shell, the inner chamber of inner casing and the preceding radial direction oil of annular gap are communicated with the cylinder body of inner casing
Hole and rear radial direction oil hole, slidable fit is oriented in the inner chamber of inner casing piston, and piston rod is provided with piston, and piston includes inside and outside
The inner sleeve and overcoat that coaxial line is arranged, inner sleeve are oriented to slip cap on piston rod, and inner sleeve is constituted to be oriented to piston rod and slided
The internal chamber wall sealing of the section that is slidably matched coordinated, overcoat and inner casing is slidably matched, and the front and rear of restricted piston is set on piston rod
The front limit structure of moving limit and rear position limiting structure, the spacing between forward and backward position limiting structure are more than the axial direction for the section that is slidably matched
Length, connect by annular connecting plate between the rear end of inside and outside set, be provided with annular connecting plate and run through annular connecting plate along the longitudinal direction
Axial oilhole, axial oilhole includes four mounting holes being arranged circumferentially around annular connecting plate, on piston rod after piston
Side is provided with the piston cap in the rear end aperture for blocking axial oilhole, is offered in piston cap and runs through piston cap along the longitudinal direction
Help sorting hole, help sorting hole mutually to stagger with axial oilhole；The buffer in the course of the work, when piston rod band piston to
After when moving, hydraulic oil is by helping sorting hole to enter between piston cap and piston, and piston cap is smoothly detached with piston, on piston
Axial oilhole is not put piston cap and blocked, and the hydraulic oil on rear side of piston flows to pistons front sides through two lines road, and a circuit is living
Axial oilhole beyond the Great Wall, another is rear radial direction oil hole, annular gap and preceding radial direction oil hole, and the circulation area of hydraulic oil is big；When
When piston rod band piston moves forward, the rear end that piston is acted on by hydraulic oil is close to the front end of piston cap, the axle on piston
Blocked to oilhole by piston cap, the hydraulic oil of pistons front sides is merely able to by preceding radial direction oil hole, annular gap and rear radial direction oil hole
This circuit is flowed on rear side of piston, and the circulation area of hydraulic oil is small, and the damping force of hydraulic oil is big.
The buffer is in order to form two hydraulic oil flow cycles, and oil cylinder is using the inner casing being coaxially set-located and outside
Cylinder, annular oil cavity is formed between inner casing and outer shell, forward and backward radial direction oil hole is opened up on interior casing wall, when piston moves forward and backward, hydraulic pressure
Oil circulates to form an oily passage by forward and backward radial direction oil hole, and hydraulic oil can pass through annular oil during piston moves forward and backward
Chamber flows, and still, the buffer causes the parts of buffer more, in order to ensure inner casing using the inside and outside cylinder being coaxially arranged
Sealing between outer shell, also higher is required to both fit precision in process of production, and then reduces production efficiency,
Make product cost higher；Further, since axial oilhole is opened on piston, in order to block axial oilhole, the buffer
Piston includes inner sleeve, overcoat, annular connecting plate, also sets up piston cap on piston rod, the parts set on piston rod are more, in group
, it is necessary to which the various pieces of piston are fitted together during dress, piston cap dress is arranged on piston rod on the piston rod, then by piston
On, therefore, the assembling process of the buffer is complex, further reduces production efficiency, increases product cost.
The content of the invention
It is an object of the invention to provide a kind of hydraulic bjuffer using single cylinder structure, to solve liquid in the prior art
The more assembling of compression buffer parts is complicated, causes the high technical problem of low production efficiency product cost.The purpose of the present invention is also
It is to provide a kind of breaker operation mechanism using above-mentioned hydraulic bjuffer.
To achieve the above object, the present invention adopts the following technical scheme that：
Hydraulic bjuffer, including oil cylinder and the piston in oil cylinder, piston is connected with piston rod, between piston and oil cylinder
And/or the rod chamber of oil cylinder and the first passage of rodless cavity are communicated with piston, piston slidable anticreep assembling vertically
On the piston rod, one end of the close rodless cavity of piston rod is provided with second channel, and the first port of second channel is located at piston rod
On outer peripheral face, piston when being moved with piston rod to rodless cavity can by inwall face closure first port, with piston rod to having
Rod cavity can get out of the way first port when moving.
The first passage is the gap between piston outer periphery face and oil cylinder inner wall, and the oil cylinder inner wall is circular cone
Face, the miner diameter end of circular conical surface are located in the rodless cavity of oil cylinder, and the gap is gradually reduced when piston moves towards rodless cavity.
The second channel includes being opened on piston rod rear end face axis along the axially extending blind hole of piston rod and opened up
Run through the oil-through hole of blind hole side wall in blind hole side wall, the outer aperture of the oil-through hole is the first port.
The axis of the piston rod extends in the longitudinal, and the piston rod includes big footpath section, path section and is arranged on big footpath
Conical section between section and path section, the path section are located at the rear of big footpath section, and path section and the piston guide of piston rod are slided
Dynamic to coordinate, the radius of conical section is gradually reduced from front to back, and the outer peripheral face of the conical section is constituted for being kept off with piston nose
Only coordinate to limit the conical stopping surface of piston extreme position.
One end of the close cylinder rod chamber of piston offers the circular groove coaxial with piston rod, when piston inner wall is closed
During the outer aperture of oil-through hole, the notch edge of the circular groove and groove bottom wall coordinate with the conical stopping surface block respectively.
The one end of the piston rod away from piston is provided with the jointing with hinge hole, the length direction of the hinge hole
Along the axially extending of piston rod.
The one end of the piston rod away from piston is provided with jointing, and the jointing is connected with piston rod by screw thread
Connect, the piston rod or jointing are provided with the spin-ended structure for preventing that jointing and piston rod from rotating against.
The jointing is provided with internal thread hole, and the corresponding end of the piston rod, which is provided with, is used for what is coordinated with internal thread hole
External screw thread stud, the spin-ended structure include the perforation being opened in jointing internal thread hole side wall, use are coated with perforation
In the tight fixed bolt for holding out against the external screw thread stud.
The elongated slot that length axially extends is offered on the external screw thread stud, the end of the tight fixed bolt is located at elongated slot
It is interior with prevent jointing opposing pistons bar rotate.
Breaker operation mechanism, including the main connecting lever of output, the hydraulic pressure that the main connecting lever of output is connected with such as above-mentioned structure delay
Rush device.
The present invention advantageous effects be：The hydraulic bjuffer of the present invention is set between piston and oil cylinder or on piston
Put first passage, open up second channel on the piston rod, first passage connects rod chamber and rodless cavity with second channel, piston with
Piston rod, which is oriented to, to be slided anti-dropout and coordinates, and when piston is oriented to slip on the piston rod, piston inner wall can be by the of second channel
Single port is closed, the first port of piston inner wall closing second channel, hydraulic pressure when piston rod moves with piston towards rodless cavity
Oil can only flow through out of first passage, reduce the circulation area of hydraulic oil, increase damping force, when piston rod band piston is to there is bar
Piston inner wall gets out of the way the first port of second channel when chamber moves, and hydraulic oil can flow from two lines, increase hydraulic oil
Circulation area, reduce damping action.Compared with oil cylinder is formed by the way of oily passage inside and outside in the prior art, the present invention exists
First passage is set between oil cylinder inner wall and piston or on piston, the quantity of parts can be reduced；In addition, and prior art
In axial oilhole opened up on piston set piston cap to be compared to close the mode of oilhole again, structure of the invention is simple, saves
Product cost, it is easy to assembling to produce, improves production efficiency.
As a further improvement on the present invention, first passage is the gap between oil cylinder and piston, and oil cylinder inner wall is
Circular conical surface, the radius of circular conical surface are gradually reduced from front to back, and when piston rod band piston moves backwards, first passage gradually subtracts
It is small, because now hydraulic oil can only be flowed by first passage so that the circulation area of hydraulic oil further reduces, and then increases
Piston damping power, further increases buffering effect, conversely, when piston rod band piston moves forward, first passage gradually increases
Greatly, the circulation area increase of hydraulic oil, the damping force that piston is subject to reduce.
Brief description of the drawings
Fig. 1 is a kind of structure sectional view of embodiment of buffer in the present invention；
Fig. 2 is a kind of explosive view of embodiment of buffer in the present invention；
The operating diagram of buffer when Fig. 3 is separating brake；
Fig. 4 is the operating diagram of buffer when closing a floodgate；
In figure：1st, jointing, 2, pre-load nut, 3, tight fixed bolt, 4, piston rod, 5, dust ring, 6, lid, 7, sealing
Circle, 8, cylinder body, 81, inboard wall of cylinder block, 9, piston, 10, back-up ring, 11, hinge hole, 12, first passage, 13, oil-through hole.
Embodiment
The embodiment of breaker operation mechanism of the present invention, as shown in Figures 1 to 4, this breaker operation mechanism are a bullet
Spring operating mechanism, spring operating mechanism include switching-in spring, tripping spring and buffer, and switching-in spring passes through transmission mechanism and phase
Moving contact is answered to be connected, transmission mechanism includes power output shaft and the main connecting lever of output being arranged on power output shaft, output
Main connecting lever is connected with tripping spring and buffer, and transmission mechanism belongs to prior art, and its concrete structure is no longer described in detail.Buffer is
Hydraulic bjuffer, hydraulic bjuffer include the oil cylinder axially extended along the longitudinal direction, and the rear end of oil cylinder is provided with exporting main connecting lever
Be hinged articulated section, oil cylinder includes cylinder body 8 and is arranged on the lid 6 of the front end of cylinder body 8, before lid 6 is threadedly attached in cylinder body 8
Hold, offer step groove on the lateral surface of lid 6, when installing lid 6, lid 6 can be screwedly mounted on cylinder body 8 by installation tool
Front end, the inwall of cylinder body 8 is provided with internal thread, and the rear end of lid 6 is provided with external screw thread stud, and sealing is provided between cylinder body and lid
Circle 7.There is piston 9 in oil cylinder, piston rod 4 is connected with piston 9, dust ring 5 is provided between the leading section of lid 6 and piston rod 4
With pilot seal circle, the front end of piston rod 4 is connected with the jointing 1 with hinge hole 11, and hinge hole 11 is length along front and back
To the elongated hole of extension, the bearing pin for being provided with and being arranged in hinge hole on main connecting lever is exported（It is not drawn into figure）, in the present embodiment, even
Joint 1 is together by a threaded connection with piston rod 4, and jointing 1 is provided with internal thread hole, and piston rod front end has and interior spiral shell
The external screw thread stud that pit spinning coordinates, jointing 1 relatively rotates with piston rod 4 during in order to prevent that buffer from working, connection
Joint 1 is provided with the spin-ended structure for being used for preventing that jointing from rotating, and the spin-ended structure includes being opened in internal thread hole side wall
On perforation and be located in perforation in tight fixed bolt 3, tight fixed bolt 3 be provided with regulation tight fixed bolt pre-load nut 2, outer spiral shell
Elongated slot is offered on line stud, the length direction of elongated slot is axially extended, and the end of tight fixed bolt 3 is extend into elongated slot during installation
To prevent jointing opposing pistons bar from rotating, in other embodiments, internal thread hole can be set in piston rod rear end, connect
Joint front end sets the external screw thread stud coordinated with internal thread hole, and spin-ended structure setting is on the piston rod；Can on external screw thread stud
It is not provided with elongated slot, during installation, tight fixed bolt holds out against external screw thread stud and prevents jointing opposing pistons bar from rotating；Jointing is also
It can be connected with piston rod.
Piston rod and piston 9 are oriented to and are slidably matched, and piston 9 can slide back and forth relative to piston rod, the lateral surface of piston 9 with
There is first passage 12, first passage 12 connects rod chamber and rodless cavity between oil cylinder inner wall.Offer and be communicated with piston rod 4
The second channel of rod cavity and rodless cavity, the second channel include the blind hole being opened on the rear end face of piston rod 4 and are opened in
Blind hole side wall and the oil-through hole 13 for running through blind hole side wall, the outer aperture of oil-through hole 13 are the first port of second channel, blind hole
It is open as the second port of second channel, when piston rod band piston 9 moves to rodless cavity, the opposing pistons bar of piston 9 guiding
Slide, the inwall of piston 9 closes the first port of second channel, and second channel is closed, and hydraulic oil can only pass through first
Passage is flowed into rod chamber, and the circulation area of hydraulic oil reduces, the damping force increase that piston is subject to；When piston rod band piston 9
When being moved to rod chamber, piston is oriented to along piston rod and slided, and the inwall of piston 9 concedes first port, and second channel is in open shape
State, hydraulic oil are flowed into rodless cavity by first passage and second channel from rod chamber, the circulation area increase of hydraulic oil, piston
It is damped power reduction.
In order to prevent piston from being come off from piston rod, position limiting structure is provided with piston rod, in the present embodiment, piston rod 4
The conical section being gradually reduced from front to back including big footpath section, path section and the radius that is arranged between big footpath section and path section is small
Footpath section is located at the rear of big footpath section, and the guiding activity of piston 9 is assemblied in the path section of piston rod, in work in the path section of piston rod
The rear of plug offers the groove of annular, and back-up ring 10 is provided with groove, when the opposing pistons bar 4 of piston 9 slides backward, back-up ring
The extreme position that piston slides backward is limited, when piston opposing pistons bar forward slip is to extreme position, conical section and piston
Front end block coordinates, and the outer peripheral face of conical section is the conical stopping surface of limitation piston extreme position, and conical section and back-up ring are formed
Limitation piston moves forward and backward the front limit structure of extreme position, rear position limiting structure.
In the present embodiment, the circular groove coaxial with piston rod is offered on the front end face of piston, the diameter of groove is less than
The diameter of the big footpath section of piston rod, and more than the diameter of path section, when piston moves forward relative to piston rod, the notch of groove
Coordinate along with conical stopping surface block, the bottom wall of groove coordinates with conical stopping surface block, the notch edge of groove and circular cone
Shape stopping surface, groove bottom wall form dual block with conical stopping surface and coordinated, and ensure that the outer aperture of oil-through hole is blocked completely, make
During breaker open operation, in-oil cylinder hydraulic oil can only be circulated by first passage.
In order to increase damping, the inboard wall of cylinder block 81 in the present embodiment is conical wall, the path of conical wall
In rodless cavity, bigger diameter end is located in rod chamber at end, and piston includes the column part positioned at piston rear end portion, the cylinder of piston
Face and inboard wall of cylinder block form annular gap, when piston rod band piston moves to rodless cavity, the radial width of annular gap by
It is decrescence small.When piston rod band piston 9 moves to rodless cavity, the radius of inboard wall of cylinder block 81 is gradually reduced, the footpath of annular gap
It is gradually reduced to width, the circulation area of hydraulic oil is gradually reduced, with the reduction of circulation area, and because of the liquid in rodless cavity
Force feed can only pass through first passage 12 and flow into rod chamber, and the damping force that piston is subject to is larger, so as to reach good buffering effect
Fruit, when piston rod band piston moves to rod chamber, the radius of inboard wall of cylinder block 81 gradually increases, the radial width of annular gap
Gradually increase, the circulation area of hydraulic oil gradually increase, and the hydraulic oil in rod chamber is flowed into by first passage, second channel
In rodless cavity, with the increase of circulation area, the damping force that piston is subject to reduces.
The course of work of this breaker operation mechanism is：When corresponding dynamic and static contact closes a floodgate, before bearing pin is located at hinge hole
End, when needing dynamic and static contact separating brake, tripping spring releases energy, and the power of tripping spring is by exporting main connecting lever and power
Output shaft is transmitted to moving contact, exports main connecting lever and drives bearing pin to move backwards, because hinge hole is that a length is prolonged along the longitudinal direction
The elongated hole stretched, therefore at the beginning of combined floodgate, piston rod will not be moved rearwards immediately, buffer does not produce damping work to exporting main connecting lever
With ensure that the separating brake initial velocity of moving contact, move to the rear end of hinge hole with rear pin shaft, piston rod starts band piston court
Rodless cavity moves, and the outer aperture of oil leakaging port is blocked by piston, and the hydraulic oil in rodless cavity can only flow to bar by first passage
Intracavitary, the circulation area of hydraulic oil reduce, the damping force increase that piston is subject to, and the radial width of first passage reduces further
Reduce circulation area, further increase damping.When needing dynamic and static contact to close a floodgate, switching-in spring releases energy, combined floodgate bullet
The power of spring passes to moving contact by transmission mechanism, exports main connecting lever and drives bearing pin to move forward, because hinge hole is elongated hole,
Piston rod will not move forward at the beginning of combined floodgate, and buffer will not produce damping action to output toggle arm, ensure that moving contact
Combined floodgate initial velocity, the front end of hinge hole is moved to rear pin shaft, piston rod band piston is moved towards rod chamber, and piston was conceded
The outer aperture of oilhole, hydraulic oil are flowed into rodless cavity by first passage, second channel, increase the circulation area of hydraulic oil,
And the radial width of first passage gradually increases, circulation area is further increased, reduces damping.
In the other embodiment of this breaker operation mechanism：Oil cylinder inner wall can be the isometrical face of cylinder, and first passage can
Think the axial oilhole being opened on piston, first passage can also be the axial oilhole being opened on piston and be arranged on oil cylinder
Gap between piston, or first passage are the axial oilhole being opened on piston and the bar between oil cylinder and piston
Shape oil groove, the length of bar shaped oil groove are axially extending along piston；Forward and backward position limiting structure and can be stop nut, or it is spacing afterwards
Structure is stop nut, and front limit structure is limited step；Piston rod and jointing can also be integrally formed；Can not on piston
Open up circular groove, during the preceding extreme position of piston to piston rod, the front end face of piston and conical stopping surface extrusion fit.
The embodiment of hydraulic bjuffer as shown in Figures 1 to 4, the concrete structure of buffer and above-mentioned each breaker actuating machine
Buffer described in structure embodiment is identical, will not be described in detail herein.
Claims (9)
1. hydraulic bjuffer, it is characterised in that：Piston including oil cylinder and in oil cylinder, piston are connected with piston rod, piston
It is communicated with the rod chamber of oil cylinder and the first passage of rodless cavity between oil cylinder and/or on piston, piston is vertically slidably
Anticreep assembling on the piston rod, one end of the close rodless cavity of piston rod is provided with second channel, the first port of second channel
On piston rod outer peripheral face, piston when being moved with piston rod to rodless cavity can by inwall face closure first port, with
Piston rod can get out of the way first port when being moved to rod chamber, the axis of the piston rod extends in the longitudinal, and the piston rod includes
Big footpath section, path section and the conical section being arranged between big footpath section and path section, the path section are located at the rear of big footpath section,
The path section of piston rod is slidably matched with piston guide, and the radius of conical section is gradually reduced from front to back, outside the conical section
Side face is constituted for coordinating with piston nose block to limit the conical stopping surface of piston extreme position.
2. hydraulic bjuffer according to claim 1, it is characterised in that：The first passage be positioned at piston outer periphery face with
Gap between oil cylinder inner wall, the oil cylinder inner wall are circular conical surface, and the miner diameter end of circular conical surface is located in the rodless cavity of oil cylinder, described
Gap is gradually reduced when piston moves towards rodless cavity.
3. hydraulic bjuffer according to claim 1, it is characterised in that：The second channel is included after being opened in piston rod
Axis along the axially extending blind hole of piston rod and is opened in blind hole side wall through the oil-through hole of blind hole side wall, the mistake on end face
The outer aperture of oilhole is the first port.
4. hydraulic bjuffer according to claim 1, it is characterised in that：One end of the close cylinder rod chamber of piston opens up
There is the circular groove coaxial with piston rod, when the outer aperture of piston inner wall closing oil-through hole, the notch edge of the circular groove
Coordinate respectively with the conical stopping surface block with groove bottom wall.
5. according to the hydraulic bjuffer described in claim 1 or 2 or 3, it is characterised in that：The one end of the piston rod away from piston
Provided with the jointing with hinge hole, the length direction of the hinge hole is along the axially extending of piston rod.
6. according to the hydraulic bjuffer described in claim 1 or 2 or 3, it is characterised in that：The one end of the piston rod away from piston
Provided with jointing, the jointing is connected through a screw thread with piston rod, and the piston rod or jointing are provided with anti-
The spin-ended structure that only jointing and piston rod rotate against.
7. hydraulic bjuffer according to claim 6, it is characterised in that：The jointing is provided with internal thread hole, institute
The corresponding end for stating piston rod is provided with the external screw thread stud for being used for coordinating with internal thread hole, and the spin-ended structure includes being opened in connection
Perforation in joint internal thread hole side wall, the tight fixed bolt for holding out against the external screw thread stud is coated with perforation.
8. hydraulic bjuffer according to claim 7, it is characterised in that：Length is offered along axle on the external screw thread stud
To the elongated slot of extension, the end of the tight fixed bolt is located in elongated slot to prevent jointing opposing pistons bar from rotating.
9. breaker operation mechanism, including the main connecting lever of output, it is characterised in that：The main connecting lever connection of output is just like claim
Hydraulic bjuffer described in 1-8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510366406.6A CN105047446B (en) | 2015-06-29 | 2015-06-29 | Hydraulic bjuffer and the breaker operation mechanism using the hydraulic bjuffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510366406.6A CN105047446B (en) | 2015-06-29 | 2015-06-29 | Hydraulic bjuffer and the breaker operation mechanism using the hydraulic bjuffer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105047446A CN105047446A (en) | 2015-11-11 |
| CN105047446B true CN105047446B (en) | 2017-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510366406.6A Active CN105047446B (en) | 2015-06-29 | 2015-06-29 | Hydraulic bjuffer and the breaker operation mechanism using the hydraulic bjuffer |
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| Country | Link |
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| CN (1) | CN105047446B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873087B (en) * | 2018-08-29 | 2021-10-22 | 宁波市鑫潮自动化元件有限公司 | Cylinder with adjustable piston rod control position |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2552151Y (en) * | 2002-08-12 | 2003-05-21 | 天水长城开关厂 | Oil buffer for circuit breaker |
| CN2727945Y (en) * | 2004-07-01 | 2005-09-21 | 广东省顺德开关厂有限公司 | Oil buffer for circuit breaker |
| CN101022058A (en) * | 2006-02-28 | 2007-08-22 | 浙江开关厂有限公司 | Gradual damping oil buffer |
| CN201443576U (en) * | 2009-08-04 | 2010-04-28 | 益和电气集团股份有限公司 | Novel hydraulic buffer |
| CN104299862A (en) * | 2014-06-27 | 2015-01-21 | 国家电网公司 | Buffer and circuit breaker operating mechanism using the same |
| CN104377055A (en) * | 2014-11-17 | 2015-02-25 | 河南平高电气股份有限公司 | Oil buffer and high-voltage direct-current breaker |
-
2015
- 2015-06-29 CN CN201510366406.6A patent/CN105047446B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2552151Y (en) * | 2002-08-12 | 2003-05-21 | 天水长城开关厂 | Oil buffer for circuit breaker |
| CN2727945Y (en) * | 2004-07-01 | 2005-09-21 | 广东省顺德开关厂有限公司 | Oil buffer for circuit breaker |
| CN101022058A (en) * | 2006-02-28 | 2007-08-22 | 浙江开关厂有限公司 | Gradual damping oil buffer |
| CN201443576U (en) * | 2009-08-04 | 2010-04-28 | 益和电气集团股份有限公司 | Novel hydraulic buffer |
| CN104299862A (en) * | 2014-06-27 | 2015-01-21 | 国家电网公司 | Buffer and circuit breaker operating mechanism using the same |
| CN104377055A (en) * | 2014-11-17 | 2015-02-25 | 河南平高电气股份有限公司 | Oil buffer and high-voltage direct-current breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105047446A (en) | 2015-11-11 |
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