CN108506404A - A kind of large hydraulic damper - Google Patents
A kind of large hydraulic damper Download PDFInfo
- Publication number
- CN108506404A CN108506404A CN201810347161.6A CN201810347161A CN108506404A CN 108506404 A CN108506404 A CN 108506404A CN 201810347161 A CN201810347161 A CN 201810347161A CN 108506404 A CN108506404 A CN 108506404A
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- China
- Prior art keywords
- damper
- piston rod
- end cap
- check valve
- piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/182—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein comprising a hollow piston rod
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/19—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein with a single cylinder and of single-tube type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3221—Constructional features of piston rods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3235—Constructional features of cylinders
- F16F9/3242—Constructional features of cylinders of cylinder ends, e.g. caps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/36—Special sealings, including sealings or guides for piston-rods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/43—Filling or drainage arrangements, e.g. for supply of gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/54—Arrangements for attachment
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The present invention provides a kind of large hydraulic dampers, including right plunger, right end cap, cylinder body, piston component, piston rod, left end cap, left plunger and auxiliary piston rod；The present apparatus is by the way of damping flow channel and first flow cooperation, first flow includes the first check valve and the second check valve, realize damper low speed friction resistance and quick lock performance, auxiliary piston rod is identical with the outer diameter of piston rod simultaneously, keep the volume that damper the right and left fluid changes identical, reduce the setting of damper service tank, reduce damper appearance and size, the symmetrical structure setting at both ends simultaneously, keep the performance that damper bears tension and compression both direction identical, improve the working performance of damper, extend the service life of damper, improve the safety of nuclear power main equipment.
Description
Technical field
The present invention relates to damper technique field more particularly to a kind of large hydraulic dampers.
Background technology
Currently, hydraulic damper is widely used in antivibration field of shock absorption, and for common hydraulic damper, structure
Size is relatively small or installation space is not limited.And in certain some special occasions, such as the large-scale liquid of nuclear power main equipment
Damper is pressed, is mounted on inside nuclear island, installation space is smaller, so just having very strict want to the structure size of damper
Ask, such as patent " CN2651560 " discloses a kind of hydraulic damper for nuclear power station, it mainly include Oil preserving piston, master cylinder,
Piston rod, carrying coupling head, preceding flap, rear flap, oil drum are placed in the outer layer of damping master cylinder, and main oil cylinder piston both sides are constituted
Two working chambers are equipped with the main control valve of the communication and locking for controlling piston both sides oil, in oil drum among piston rod
The aux. control valve linked up between master cylinder and oil storage cylinder is equipped between master cylinder；Pass through pipeline and auxiliary in front of Oil preserving piston
Control valve connects, and rear is equipped with compression spring, and the main and auxiliary control valve of elastic oil-bearing structure and cone valve structure can be made up automatically due to resistance
The volume asymmetric damping device inner fluid volume change of piston both sides oil pocket in Buddhist nun's oil cylinder is subjected to pipe-line system and meets with earthquake and core
Antivibration when the main building loss of-coolant accident (LOCA) impact of power station；But existing damper is needed since the volume of piston both sides oil pocket is asymmetric
It configures auxiliary oil-bearing structure and is used to accommodate the extra fluid generated when damper work, so as to cause the appearance and size of damper
It is bigger, there is more special requirement to damper installation space, and cause to hinder by the volume of piston both sides oil pocket is inconsistent
The performance that Buddhist nun's device bears tension and compression both direction is inconsistent, seriously affects the safety in the service life and nuclear power main equipment of large-scale damper.
Invention content
To overcome problems with existing in the prior art, existing damper not right due to the volume of piston both sides oil pocket
Claim, needs to configure damper auxiliary oil-bearing structure and be used to accommodate the extra fluid generated when damper work, so as to cause damping
The appearance and size of device is bigger, has more special requirement to damper installation space, and by the volume of piston both sides oil pocket
The inconsistent performance for causing damper to bear tension and compression both direction is inconsistent, seriously affects service life and the nuclear power master of large-scale damper
The safety of equipment；The present invention provides a kind of large hydraulic dampers, it is characterised in that:Including right plunger, right end cap, cylinder body,
Piston component, piston rod, left end cap, left plunger and auxiliary piston rod, the right plunger are located at the right of right end cap, the left pin
Head is located at the left side of piston rod, and cylindrical inner hole of cylinder, the piston group are formed inside the right end cap, cylinder body and left end cap
Part is located inside inner hole of cylinder, and inner hole of cylinder is divided into the left working chamber of damper and the right work of damper by the piston component
Chamber, the piston rod are connect with piston component, and the left end of piston rod passes through left end cap, and driving piston component is moved forward and backward, described
Damping flow channel and first flow, the damping flow channel and first are provided between the left working chamber of damper and the right working chamber of damper
The left end of runner is connected with the left working chamber of damper, right end and the right working chamber of damper of the damping flow channel and first flow
It is connected；The first flow includes the first check valve and the second check valve, and the first check valve and the second check valve are with one
Surely the reversed check valve open in usual of pressure is closed, first check valve and the second check valve are positioned opposite, and described first is unidirectional
The outlet of valve is connected with the left working chamber of damper, and the outlet of second check valve is connected with the right working chamber of damper, institute
The import for stating the first check valve is connected with the import of the second check valve, to realize the two-way opening of first flow and locking；
The right side central of the piston component is machined with cylindrical piston inner hole, and the auxiliary piston rod is located in piston inner hole, with
Piston inner hole cooperatively forms a seal cavity, and the outer diameter of the auxiliary piston rod is identical as the outer diameter of piston rod, ensures damping
The consistency of device tension and compression both direction performance；The left end of the piston rod is machined with the first venthole radially penetrated through, piston rod
Bosom be axially machined with the second venthole, the left end of second venthole is connected with the first venthole, and second is logical
The right end of stomata is connected with piston inner hole, and the piston inner hole is kept away by the second venthole, the first venthole and atmosphere
Exempt from the performance of damper is influenced by gas pressure change.
On this basis, further include plug and tank filler sleeve, the tank filler sleeve is located at left end cap, axially through left end cap,
After damper completes oiling, the plug and associated seal are mounted in tank filler sleeve, block tank filler sleeve, the left work of damper
The right working chamber of chamber, damper and the correlation space communicated therewith and channel are each filled with work fluid.
On this basis, guider and sealing device, the work are installed between the piston component and inner hole of cylinder
It is formed and is slidably matched between plug assembly and inner hole of cylinder, is equipped between the left end outer wall of the piston inner hole and auxiliary piston rod
It is formed and is slidably matched between the left end outer wall of guider and sealing device, piston inner hole and auxiliary piston rod, the left end cap
Guider, sealing device and dust guard, the outer wall of the left end cap and piston rod are installed between the outer wall of piston rod
Between formed and be slidably matched.
On this basis, it is provided with the right mounting hole of damper in the right plunger, damper is provided in the left plunger
Left mounting hole, the left plunger and piston rod formation are fastenedly connected, and the piston component and piston rod are integrally formed.
On this basis, the damping flow channel and first flow are located on piston component, along the axial arranged of piston component.
On this basis, further include channel, shown channel is located at the outside of cylinder body, the damping flow channel and first flow position
In on channel, the both ends of the cylinder body have been disposed radially first passage and second channel, and first passage and second channel run through
Inside and outside cylinder body, the first passage is connected with the left end of damping flow channel, first flow, the second channel and damping flow channel,
The right end of first flow is connected.
On this basis, the damping flow channel is that the axial runner directly penetrated through or damping flow channel pass through for axial screw
Logical runner or damping flow channel is that axial directly perforation and axial screw penetrate through the runner being combined.
On this basis, the auxiliary piston rod be securedly mounted on right end cap by screw or auxiliary piston rod with
Right plunger, right end cap are integrally formed.
On this basis, the left end cap and cylinder body are securedly mounted to together or left end cap and cylinder body are integrally formed.
On this basis, the right plunger, right end cap and cylinder body are integrally formed or right plunger, right end cap and cylinder body are tight
Guan County is fitted together.
Compared with prior art, the beneficial effects of the invention are as follows：
1, for the present apparatus by the way of damping flow channel and first flow cooperation, first flow includes the first check valve and second
Check valve, the first check valve and the second check valve are positioned opposite；When damper tick-over, damping flow channel and first flow are same
When be connected, realize the performance of damper low speed friction resistance；When damper quickly moves constantly, the first check valve or second is singly
Cause first flow to be closed to valve closing, realizes damper quick lock performance；Simple in structure, process industrial art performance is good, protects
Hinder product quality, and improves the reliability of product.
2, the present apparatus is equipped with using auxiliary piston rod and piston rod, and auxiliary piston rod is identical with the outer diameter of piston rod,
Keep the volume that damper the right and left fluid changes identical, reduces the setting of damper service tank, reduce outside damper
Shape size, while the symmetrical structure setting at both ends, keep the performance that damper bears tension and compression both direction identical, improve damper
Working performance, extend the service life of damper, improve the safety of nuclear power main equipment.
3, piston inner hole is exhausted in the second venthole of the present apparatus and the first venthole, ensure that auxiliary piston rod and work
The gas compartment formed when coordinating between stopper rod does not influence the damping action of damper, improves the response speed of damper, protects
The smooth realization of damper damping is demonstrate,proved.
Description of the drawings
Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1；
Fig. 2 is the structural schematic diagram of the embodiment of the present invention 2；
Fig. 3 is the structural schematic diagram of the embodiment of the present invention 3；
In figure：1, right plunger, 2, right end cap, 2-1, auxiliary piston rod mounting hole, 3, cylinder body, 3-1, inner hole of cylinder, 3-4,
First passage, 3-5, second channel, 4, piston component one, 4-1, piston inner hole, 4-2, the first check valve are 4-3, second unidirectional
Valve, 4-4, damping flow channel, 5, piston rod, 5-1, the first venthole, 5-2, the second venthole, 6, left end cap, 7, left plunger, 8, stifled
Head, 9, tank filler sleeve, 10, auxiliary piston rod, 10-1, auxiliary piston rod endoporus, 11, screw, 14, piston component two, 20, channel,
A, the left mounting hole of damper, the right mounting hole of B, damper, the left working chamber of C, damper, the right working chamber of D, damper,
Specific implementation mode
Below in conjunction with drawings and examples, the present invention will be described in further detail.It should be appreciated that described herein
Specific examples are only used to explain the present invention, is not intended to limit the present invention.
Implementation column 1：
As shown in Figure 1, the present invention schematically illustrates a kind of large hydraulic damper.
A kind of large hydraulic damper of present disclosure, as shown in Figure 1, including right plunger 1, right end cap 2, cylinder body 3, piston
Component 1, piston rod 5, left end cap 6, left plunger 7, plug 8, tank filler sleeve 9, auxiliary piston rod 10 and screw 11, right plunger 1
In offering the right mounting hole B of damper on the right of right end cap 2, right plunger 1, left plunger 7 is located at the left side of piston rod 5, left pin
First 7 and piston rod 5 formation be fastenedly connected, the left mounting hole A of damper, right plunger 1, right end cap 2 and cylinder body are offered in left plunger 7
3 are integrally formed, and left end cap 6 and cylinder body 3 are securedly mounted to together, and sealing device is equipped between 3 inner wall of left end cap 6 and cylinder body,
The cylindrical inner hole of cylinder 3-1 of processing in cylinder body 3, right end cap 2, cylinder body 3 and left end cap 6 cooperatively form closed endoporus, piston
Component 1 is located inside inner hole of cylinder 3-1, and guider is equipped between piston component 1 and inner hole of cylinder 3-1 and sealing fills
It sets, is formed and be slidably matched between piston component 1 and inner hole of cylinder 3-1, inner hole of cylinder 3-1 is divided into resistance by piston component 1
The left working chamber C of the Buddhist nun's device and right working chamber D of damper；The axially inside perforation of piston component 1 is equipped with damping flow channel 4-4 and the
One runner, damping flow channel 4-4 and first flow left end are connected with the left working chamber C of damper, damping flow channel 4-4 and first flow
Right end be connected with the right working chamber D of damper, damping flow channel 4-4 is the axial runner directly penetrated through, another as the present embodiment
Outer embodiment：Damping flow channel 4-4 is the runner of axial screw perforation, or is axial directly perforation and axial screw perforation
The runner being combined；First flow includes the first check valve 4-2 and the second check valve 4-3, the first check valve 4-2 and second unidirectional
Valve 4-3 is with certain reversed check valve open in usual for closing pressure, and the first check valve 4-2 and the second check valve 4-3 are with respect to cloth
It sets, the outlet of the first check valve 4-2 is connected with the left working chamber C of damper, the outlet of the second check valve 4-3 and the right work of damper
Make chamber D to be connected, the import of the oil inlet of the first check valve 4-2 and the second check valve 4-3 is connected, when damper tick-over
When, the first check valve 4-2 and the second check valve 4-3 are opened, and damping flow channel 4-4 and first flow simultaneously turn on, the left work of damper
Make fluid between chamber C and the right working chamber D of damper to flow by damping flow channel 4-4 and first flow, realizes damper low speed
The performance of frictional resistance；When damper quickly moves, the first check valve 4-2 or the second check valve 4-3 closings cause first-class
Road is closed, and fluid is flowed by damping flow channel 4-4 between the left working chamber C of damper and the right working chamber D of damper, realizes damping
Device quick lock performance；The right side central of piston component 1 is machined with cylindrical piston inner hole 4-1, auxiliary piston rod 10
Left end is located in piston inner hole 4-1, and guider and sealing device are equipped between auxiliary piston rod 10 and piston inner hole 4-1,
It is slidably matched between piston inner hole 4-1 and the left end outer wall of auxiliary piston rod 10, to form a seal cavity；Auxiliary piston
The right end of bar 10 is connect with right end cap 2, and the Left-side center of right end cap 2 is machined with auxiliary piston rod mounting hole 2-1, auxiliary piston rod
Sealing element is installed between 10 right end outer walls and auxiliary piston rod mounting hole 2-1, is machined with inside the left side of auxiliary piston rod 10
Cylindrical auxiliary piston rod endoporus 10-1, the right side of auxiliary piston rod 10 be machined with it is several axially through screw mounting hole,
Screw 11 passes through auxiliary piston rod endoporus 10-1, and auxiliary piston rod 10 is securedly mounted on right end cap 2 by screw mounting hole；
The outer diameter of auxiliary piston rod 10 is identical as the outer diameter of piston rod 5, to ensure the left working chamber C of damper and the right working chamber of damper
The volume of the both sides D fluid variation is identical, reduces the setting of damper service tank, reduces damper appearance and size, simultaneously
The symmetrical structure at both ends is arranged, and keeps the performance that damper bears tension and compression both direction identical, improves the working performance of damper,
Extend the service life of damper；Piston rod 5 is connect across left end cap 6 with piston component 1, before driving piston component 1
After move, piston component 1 and piston rod 5 are integrally formed, and the left end of piston rod 5 is machined with the first venthole 5- radially penetrated through
1, the bosom of piston rod 5 is axially machined with the second venthole 5-2, the left end of the second venthole 5-2 and the first venthole 5-1
It is connected, the right end of the second venthole 5-2 is connected with piston inner hole 4-1, and piston inner hole 4-1 passes through the second venthole 5-2,
One venthole 5-1 and atmosphere, to make the gas compartment formed when cooperation between auxiliary piston rod 10 and piston rod 5 not shadow
The damping action for ringing damper, improves the response speed of damper, ensure that the smooth realization of damper damping；Left end
Guider, sealing device and dust guard be installed between lid 6 and the outer wall of piston rod 5, left end cap 6 and piston rod 5 it is outer
It is formed and is slidably matched between wall, to ensure that the leakproofness of the left working chamber C of damper；Axially through offering on left end cap 6
Tank filler sleeve 9, after damper completes oiling, the plug 8 and associated seal are mounted in tank filler sleeve 9, block tank filler sleeve 9,
The left working chamber C of damper, the right working chamber D of damper and the correlation space communicated therewith and channel are each filled with work fluid.
Operation principle：
When left plunger 7 is moved right relative to right plunger 1, hydraulic damper forms the work of pressure direction, and right plunger 1 drives
Piston rod 5 and piston component 1 move right.In hydraulic damper low-speed motion state, the first check valve 4-2 forward directions are opened,
Second check valve 4-3 is not latched, and passage gaps are remained between the spool and valve seat of the second check valve 4-3.At this point, hydraulic pressure hinders
Work fluid in the right working chamber D of Buddhist nun's device on the one hand by passage gaps between the spool and valve seat of the second check valve 4-3 and
The first check valve 4-2 that forward direction is opened is flowed into the left working chamber C of damper；On the other hand, in the right working chamber D of hydraulic damper
Work fluid is flowed into the left working chamber C of damper also by damping flow channel 4-4, since the flow channel of work fluid is larger, work
Make fluid from during the right working chamber D of hydraulic damper flows into the left working chamber C of damper, form the very small pressure loss,
Damper forms very small drag to external equipment, meets the performance requirement of damper low speed friction resistance.In hydraulic damping
The quick motion state of device, the first check valve 4-2 forward directions are opened, and the second check valve 4-3 generates locking, the valve of the second check valve 4-3
Passage gaps between core and valve seat are closed.At this point, the work fluid in the right working chamber D of hydraulic damper is merely capable of passing through resistance
Buddhist nun's runner 4-4 is flowed into the left working chamber C of damper, when the fluid that works is by damping flow channel 4-4, forms larger pressure damage
It loses, generates damping action, large hydraulic damper provides external equipment larger drag, meets wanting for damper latch performance
It asks, the safety of effective protection external equipment.Meanwhile opposite compression fortune is also generated between piston component 1 and auxiliary piston rod 10
Dynamic, the air in piston inner hole 4-1 and auxiliary piston rod endoporus 10-1 is discharged by the second venthole 5-2, the first venthole 5-1
Air, the effective guarantee correlated performance of large hydraulic damper.
When left plunger 7 is moved downward relative to right plunger 1, hydraulic damper, which is formed, draws direction work, right plunger 1 to drive
Piston rod 5 and piston component 1 move downward；In hydraulic damper low-speed motion state, the second check valve 4-3 forward directions are opened,
First check valve 4-2 is not latched, and passage gaps are remained between the spool and valve seat of the first check valve 4-2；At this point, hydraulic pressure hinders
Work fluid in the left working chamber C of Buddhist nun's device on the one hand by passage gaps between the spool and valve seat of the first check valve 4-2 and
The second check valve 4-3 that forward direction is opened is flowed into the right working chamber D of damper；On the other hand, in the left working chamber C of hydraulic damper
Work fluid is flowed into the right working chamber D of damper also by damping flow channel 4-4, since the flow channel of work fluid is larger, work
Make fluid from during the left working chamber C of hydraulic damper flows into the right working chamber D of damper, form the very small pressure loss,
Damper forms very small drag to external equipment, meets the performance requirement of damper low speed friction resistance；In hydraulic damping
The quick motion state of device, the second check valve 4-3 forward directions are opened, and the first check valve 4-2 generates locking, the valve of the first check valve 4-2
Passage gaps between core and valve seat are closed；At this point, the work fluid in the left working chamber C of hydraulic damper is merely capable of passing through resistance
Buddhist nun's runner 4-4 is flowed into the right working chamber D of damper, when the fluid that works is by damping flow channel 4-4, forms larger pressure damage
It loses, generates damping action, large hydraulic damper provides external equipment larger drag, meets wanting for damper latch performance
It asks, the safety of effective protection external equipment；Meanwhile it also generating opposite stretch between piston component 1 and auxiliary piston rod 10 and transporting
Dynamic, piston inner hole 4-1 and auxiliary piston rod endoporus 10-1 suck air by the second venthole 5-2, the first venthole 5-1, have
Effect has ensured the correlated performance of large hydraulic damper.
Since the outer diameter of auxiliary piston rod 10 is identical with the outer diameter of piston rod 5, damper during the work time, right working chamber
The volume variable quantity of the left working chamber C of the volume variable quantity of D and hydraulic damper is identical, avoids the volume of single-piston rod damper
Variation issue reduces the setting of damper service tank, meanwhile, the one of the tension and compression both direction performance of large hydraulic damper
Cause property is also more preferable.
Implementation column 2：
As different from Example 1, a kind of large hydraulic damper of present embodiment, as shown in Fig. 2, including right plunger
1, right end cap 2, cylinder body 3, piston component 1, piston rod 5, left end cap 6, left plunger 7, plug 8, tank filler sleeve 9 and auxiliary piston rod
10, right plunger 1, right end cap 2 and auxiliary piston rod 10 are integrally formed, and cylinder body 3 is integrally formed with left end cap 6, one 4 He of piston component
The one of piston rod 5 between cylinder body 3 and right end cap 2 at being equipped with sealing device；Auxiliary piston rod 10 is integrally formed with right end cap 2,
The concentricity between piston rod 5 and cylinder body 3 is improved, ensure that the installation quality of damper, improves the installation effect of damper
Rate extends the service life of damper.
Implementation column 3：
As different from Example 1, a kind of large hydraulic damper of present embodiment, as shown in figure 3, including right plunger
1, right end cap 2, cylinder body 3, piston component 2 14, piston rod 5, left end cap 6, left plunger 7, plug 8, tank filler sleeve 9, auxiliary piston rod
10, screw 11 and channel 20, piston component 2 14 are integrally formed with piston rod 5, and piston component 2 14 is located in inner hole of cylinder 3-1
Portion, is equipped with guider and sealing device between piston component 2 14 and inner hole of cylinder 3-1, in piston component 2 14 and cylinder barrel
It is formed and is slidably matched between the 3-1 of hole, inner hole of cylinder 3-1 is divided into the left working chamber C of damper and damper by piston component 2 14
Right working chamber D, channel 20 are located at the outside of cylinder body 3, including damping flow channel 4-4 and first flow, damping flow channel 4-4 and first-class
The both ends in road are combined into one, and 3 both ends of cylinder body have been disposed radially first passage 3-4 and second channel 3-5, first passage 3-4 and
Second channel 3-5 is inside and outside through cylinder body, and first passage 3-4 is connected with the left end of damping flow channel 4-4, first flow, and second
Channel 3-5 is connected with the right end of damping flow channel 4-4, first flow；Channel 20 is external by damping flow channel 4-4 and first flow,
Convenient for being overhauled and being safeguarded to damper, the labor intensity of maintenance is reduced, is improved work efficiency.
The preferred embodiment of the present invention has shown and described in above description, as previously described, it should be understood that the present invention is not office
Be limited to form disclosed herein, be not to be taken as excluding other embodiments, and can be used for various other combinations, modification and
Environment, and can be changed by the above teachings or related fields of technology or knowledge in the scope of the invention is set forth herein
It is dynamic.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be appended by the present invention
In scope of the claims.
Claims (10)
1. a kind of large hydraulic damper, it is characterised in that:Including right plunger (1), right end cap (2), cylinder body (3), piston component,
Piston rod (5), left end cap (6), left plunger (7) and auxiliary piston rod (10), the right plunger (1) are located at the right side of right end cap (2)
Side, the left plunger (7) are located at the left side of piston rod (5), are formed inside the right end cap (2), cylinder body (3) and left end cap (6)
Cylindrical inner hole of cylinder (3-1), the piston component are located at inner hole of cylinder (3-1) inside, and the piston component is in cylinder barrel
Hole (3-1) is divided into the left working chamber of damper (C) and the right working chamber of damper (D), the piston rod (5) to connect with piston component
It connects, the left end of piston rod (5) passes through left end cap (6), driving piston component to be moved forward and backward；The left working chamber of damper (C) and
It is provided with damping flow channel (4-4) and first flow between the right working chamber of damper (D), the damping flow channel (4-4) and first-class
The left end in road is connected with the left working chamber of damper (C), and the right end and damper of the damping flow channel (4-4) and first flow are right
Working chamber (D) is connected；The first flow includes the first check valve (4-2) and the second check valve (4-3), the first check valve
(4-2) and the second check valve (4-3) are with certain reversed check valve open in usual for closing pressure, the first check valve (4-
2) and the second check valve (4-3) is positioned opposite, and the outlet of first check valve (4-2) is connected with the left working chamber of damper (C)
Logical, the outlet of second check valve (4-3) is connected with the right working chamber of damper (D), first check valve (4-2) into
Mouth is connected with the import of the second check valve (4-3), to realize the two-way opening of first flow and locking；The piston component
Right side central be machined with cylindrical piston inner hole (4-1), it is interior that the auxiliary piston rod (10) is located at piston inner hole (4-1),
A seal cavity, the outer diameter of the outer diameter and piston rod (5) of the auxiliary piston rod (10) are cooperatively formed with piston inner hole (4-1)
It is identical, ensure the consistency of damper tension and compression both direction performance；The left end of the piston rod (5) is machined with radially penetrated through
The bosom of one venthole (5-1), piston rod (5) is axially machined with the second venthole (5-2), the second venthole (5-
2) left end is connected with the first venthole (5-1), and the right end of the second venthole (5-2) is connected with piston inner hole (4-1), institute
Piston inner hole (4-1) is stated by the second venthole (5-2), the first venthole (5-1) and atmosphere, avoids the performance of damper
It is influenced by gas pressure change.
2. a kind of large hydraulic damper according to claim 1, it is characterised in that：Further include plug (8) and tank filler sleeve
(9), the tank filler sleeve (9) is located at left end cap (6), axially through left end cap (6), after damper completes oiling, the plug
(8) and associated seal is mounted in tank filler sleeve (9), blocks tank filler sleeve (9), the left working chamber of damper (C), the right work of damper
Chamber (D) and the correlation space communicated therewith and channel are each filled with work fluid.
3. a kind of large hydraulic damper according to claim 1, it is characterised in that：The piston component and inner hole of cylinder
Guider and sealing device are installed between (3-1), sliding is formed between the piston component and inner hole of cylinder (3-1) and matches
It closes, guider and sealing device is installed between the piston inner hole (4-1) and the left end outer wall of auxiliary piston rod (10), it is living
It is formed and is slidably matched between plug endoporus (4-1) and the left end outer wall of auxiliary piston rod (10), the left end cap (6) and piston rod
(5) guider, sealing device and dust guard, the outer wall of the left end cap (6) and piston rod (5) are installed between outer wall
Between formed and be slidably matched.
4. a kind of large hydraulic damper according to claim 1, it is characterised in that：It is provided on the right plunger (1)
The right mounting hole of damper (B) is provided with the left mounting hole of damper (A), the left plunger (7) and piston on the left plunger (7)
Bar (5) formation is fastenedly connected, and the piston component and piston rod (5) are integrally formed.
5. a kind of large hydraulic damper according to claim 1, it is characterised in that：The damping flow channel (4-4) and
One runner is located on piston component, along the axial arranged of piston component.
6. a kind of large hydraulic damper according to claim 1, it is characterised in that：Further include channel (20), it is shown logical
Road (20) is located at the outside of cylinder body (3), and the damping flow channel (4-4) and first flow are located on channel (20), the cylinder body (3)
Both ends be disposed radially first passage (3-4) and second channel (3-5), first passage (3-4) and second channel (3-5) pass through
It is inside and outside to wear cylinder body (3), the first passage (3-4) is connected with the left end of damping flow channel (4-4), first flow, and described second
Channel (3-5) is connected with the right end of damping flow channel (4-4), first flow.
7. a kind of large hydraulic damper according to claim 5 or claim 6, it is characterised in that：The damping stream
Road (4-4) is that either damping flow channel (4-4) is that the runner of axial screw perforation or damping are flowed to the axial runner directly penetrated through
Road (4-4) is that axial directly perforation and axial screw penetrate through the runner being combined.
8. a kind of large hydraulic damper according to claim 1, it is characterised in that：The auxiliary piston rod (10) passes through
Screw (11) is securedly mounted on right end cap (2) or auxiliary piston rod (10) and right plunger (1), right end cap (2) one at
Type.
9. a kind of large hydraulic damper according to claim 1, it is characterised in that：The left end cap (6) and cylinder body (3)
It is securedly mounted to together or left end cap (6) and cylinder body (3) is integrally formed.
10. a kind of large hydraulic damper according to claim 1, it is characterised in that：The right plunger (1), right end cap
(2) and cylinder body (3) is integrally formed or right plunger (1), right end cap (2) and cylinder body (3) are securedly mounted to together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810347161.6A CN108506404A (en) | 2018-04-18 | 2018-04-18 | A kind of large hydraulic damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810347161.6A CN108506404A (en) | 2018-04-18 | 2018-04-18 | A kind of large hydraulic damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108506404A true CN108506404A (en) | 2018-09-07 |
Family
ID=63382729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810347161.6A Pending CN108506404A (en) | 2018-04-18 | 2018-04-18 | A kind of large hydraulic damper |
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| Country | Link |
|---|---|
| CN (1) | CN108506404A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980256A (en) * | 2018-09-12 | 2018-12-11 | 苏州涵轩信息科技有限公司 | A kind of sludge stirring machine vibration absorber |
| CN112065906A (en) * | 2020-09-24 | 2020-12-11 | 山东佳能科技股份有限公司 | Hydraulic damper for pipeline |
| CN112128289A (en) * | 2020-09-16 | 2020-12-25 | 西安航天远征流体控制股份有限公司 | Hydraulic shock absorber and pulse cleaning angle valve |
| CN112696450A (en) * | 2020-12-31 | 2021-04-23 | 武汉海润工程设备有限公司 | Resettable one-way compression type valve damper |
| CN112780721A (en) * | 2021-01-28 | 2021-05-11 | 武汉海润工程设备有限公司 | One-way pressed self-reset damper and one-way pressed slidable structure |
| CN112780720A (en) * | 2021-01-28 | 2021-05-11 | 武汉海润工程设备有限公司 | Slidable transverse bridge compression self-resetting damper |
| CN113236701A (en) * | 2021-07-01 | 2021-08-10 | 江苏永衡土木减隔震工程技术研究院有限公司 | Spiral damping channel viscous fluid damper |
| CN115217887A (en) * | 2022-05-18 | 2022-10-21 | 李绍贵 | Hydraulic damper |
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| CN108980256B (en) * | 2018-09-12 | 2024-06-07 | 苏州涵轩信息科技有限公司 | Vibration damper for sludge mixer |
| CN112128289A (en) * | 2020-09-16 | 2020-12-25 | 西安航天远征流体控制股份有限公司 | Hydraulic shock absorber and pulse cleaning angle valve |
| CN112128289B (en) * | 2020-09-16 | 2022-04-19 | 西安航天远征流体控制股份有限公司 | Hydraulic shock absorber and pulse cleaning angle valve |
| CN112065906A (en) * | 2020-09-24 | 2020-12-11 | 山东佳能科技股份有限公司 | Hydraulic damper for pipeline |
| CN112696450A (en) * | 2020-12-31 | 2021-04-23 | 武汉海润工程设备有限公司 | Resettable one-way compression type valve damper |
| CN112780721A (en) * | 2021-01-28 | 2021-05-11 | 武汉海润工程设备有限公司 | One-way pressed self-reset damper and one-way pressed slidable structure |
| CN112780720A (en) * | 2021-01-28 | 2021-05-11 | 武汉海润工程设备有限公司 | Slidable transverse bridge compression self-resetting damper |
| CN113236701A (en) * | 2021-07-01 | 2021-08-10 | 江苏永衡土木减隔震工程技术研究院有限公司 | Spiral damping channel viscous fluid damper |
| CN115217887A (en) * | 2022-05-18 | 2022-10-21 | 李绍贵 | Hydraulic damper |
| CN115217887B (en) * | 2022-05-18 | 2024-06-04 | 长沙市伊尔特流体技术有限公司 | Hydraulic damper |
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Application publication date: 20180907 |