CN107387492B - A kind of multistage perpendicular hydraulic cylinder and its way to play for time - Google Patents
A kind of multistage perpendicular hydraulic cylinder and its way to play for time Download PDFInfo
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- CN107387492B CN107387492B CN201710857291.XA CN201710857291A CN107387492B CN 107387492 B CN107387492 B CN 107387492B CN 201710857291 A CN201710857291 A CN 201710857291A CN 107387492 B CN107387492 B CN 107387492B
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- piston rod
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1428—Cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/222—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston with a piston extension or piston recess which throttles the main fluid outlet as the piston approaches its end position
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The present invention relates to a kind of multistage perpendicular hydraulic cylinder and its ways to play for time, multistage plays the multistage cylinder barrel that perpendicular hydraulic cylinder includes hollow piston rod and is sequentially sleeved on the outside of piston rod, wherein, outermost cylinder barrel is level-one cylinder barrel, it is second level cylinder barrel that level-one cylinder barrel inner sleeve, which is set, the left end of piston rod is fixed with left trunnion, the right end of level-one cylinder barrel is fixed with right trunnion, multiple throttle orifices of connection level-one cylinder barrel anti-chamber grease chamber and the anti-chamber grease chamber of second level cylinder barrel are offered on second level cylinder barrel, multiple throttle orifices are in the stroke-end position of level-one cylinder barrel.It has the advantages that structure is simple, control is easy, good buffer effect, long service life are, it can be achieved that quickly stretching and recycling, reduction are changed grade impact and impacted in place.Way to play for time has the characteristics that simple process, realization are easy, are easy to control.
Description
Technical field
The present invention relates to a kind of hydraulic cylinders, and in particular to a kind of multistage perpendicular hydraulic cylinder, and multistage play perpendicular hydraulic cylinder
Way to play for time.
Background technique
In hydraulic system, for multistage plays perpendicular hydraulic cylinder, a grade moment is changed overhanging and recycling, often because making
Two-stage cylinder barrel is caused to generate vibration, impact with area mutation.For this problem, the way to play for time master that this field uses at present
To be outside segments flow control, i.e., the volume control device of throttle valve or other forms is installed on the circuit of control hydraulic cylinder, lead to
It crosses control flow to be buffered, structure is complex, and control difficulty is larger.And the way to play for time of outside segments flow control can reduce
Multistage plays the speed of service of perpendicular hydraulic cylinder, is unable to satisfy the flexible requirement of quick and stable.
Summary of the invention
The object of the present invention is to provide a kind of multistage perpendicular hydraulic cylinder and its way to play for time, controls simple with structure
Be easy, good buffer effect, long service life the advantages of, it can be achieved that quickly stretch out and recycling, reduction change grade impact and impact in place.
To solve the above-mentioned problems in the prior art, it is provided by the invention it is a kind of it is multistage play perpendicular hydraulic cylinder, including in
Empty piston rod and the multistage cylinder barrel being sequentially sleeved on the outside of piston rod, wherein outermost cylinder barrel is level-one cylinder barrel, first-stage cylinder
It is second level cylinder barrel that cylinder inside, which is arranged, and the left end of the piston rod is fixed with left trunnion, and the right end of the level-one cylinder barrel is fixed with
Right trunnion, which is characterized in that the anti-chamber grease chamber of connection level-one cylinder barrel and the anti-chamber grease chamber of second level cylinder barrel are offered on the second level cylinder barrel
Multiple throttle orifices, the multiple throttle orifice is in the stroke-end position of level-one cylinder barrel.
Further, a kind of multistage perpendicular hydraulic cylinder of the present invention, wherein the multiple throttle orifice includes being distributed from left to right
Level-one choke zone, two-step throttle area and three-level choke zone；The throttle orifice of the level-one choke zone is set along the axial direction of second level cylinder barrel
There are 2~6 circles, every circle throttle orifice is equipped with 3~8 and is uniformly distributed it along the circumferential direction of second level cylinder barrel；The two-step throttle area
Throttle orifice is equipped with 6~24 and is spirally distributed it along the axial direction of second level cylinder barrel；The throttle orifice of the three-level choke zone is set
There are 2~6 and is uniformly distributed it along the circumferential direction of second level cylinder barrel.
Further, a kind of multistage perpendicular hydraulic cylinder of the present invention, wherein the inner sleeve of the second level cylinder barrel is equipped with three-level cylinder
Cylinder, the right end of second level cylinder barrel are fixed with second piston ring, and the inner edge of second piston ring is fixed with the second level for protruding into piston rod cavity
Damper tube, the left end of second level damper tube are fixed with second level damping sleeve, and the periphery wall of second level damping sleeve is in the conical surface left large and right small；Three
The right end of grade cylinder barrel is fixed with three-level piston ring, and the inner edge of three-level piston ring is fixed with the three-stage damping for protruding into piston rod cavity
Pipe, three-stage damping pipe sleeve are located at the outside of second level damper tube, are fixed on the internal perisporium of three-stage damping pipe and match with second level damping sleeve
The positive chamber bumper ring of the second level of conjunction；The right end periphery wall of second level damper tube is in the conical surface left small and right large, the internal perisporium of three-stage damping pipe
Upper and in the positive chamber bumper ring of second level right positions are further fixed on the anti-chamber bumper ring of second level with the cooperation of second level damper tube right end.
Further, a kind of multistage perpendicular hydraulic cylinder of the present invention, wherein the three-level cylinder barrel is set in the outer of piston rod
Side, the periphery wall of the three-stage damping pipe are in the conical surface left small and right large, are fixed on the right end internal perisporium of the piston rod and three
The anti-chamber bumper ring of three-level of grade damper tube cooperation.
Further, a kind of multistage perpendicular hydraulic cylinder of the present invention, wherein the inner sleeve of the three-level cylinder barrel is equipped with level Four cylinder
Cylinder, the right end of level Four cylinder barrel are fixed with level Four piston ring, and the inner edge of level Four piston ring is fixed with the level Four for protruding into piston rod cavity
Damper tube, level Four damper tube are set in the outside of three-stage damping pipe, and the left end of three-stage damping pipe is fixed with three-stage damping set, three-level
The periphery wall of damping sleeve is in the conical surface left large and right small, and three with three-stage damping set cooperation are fixed on the internal perisporium of level Four damper tube
The positive chamber bumper ring of grade, the right end periphery wall of three-stage damping pipe are in the conical surface left small and right large, on the internal perisporium of level Four damper tube and are located
The anti-chamber bumper ring of three-level with the cooperation of three-stage damping pipe right end is further fixed in the right positions of the positive chamber bumper ring of three-level.
Further, a kind of multistage perpendicular hydraulic cylinder of the present invention, wherein the level Four cylinder barrel is set in the outer of piston rod
Side, the periphery wall of the level Four damper tube are in the conical surface left small and right large, are fixed on the right end internal perisporium of the piston rod and four
The anti-chamber bumper ring of level Four of grade damper tube cooperation.
Further, a kind of multistage perpendicular hydraulic cylinder of the present invention, wherein the orifice diameter in the two-step throttle area is less than
The orifice diameter of level-one choke zone, the orifice diameter of the three-level choke zone are equal to the orifice diameter in two-step throttle area.
The present invention also provides the ways to play for time that a kind of three-level plays perpendicular hydraulic cylinder, and it includes hollow that the three-level, which plays perpendicular hydraulic cylinder,
Piston rod and the three-level cylinder barrel that is sequentially sleeved on the outside of piston rod, wherein outermost cylinder barrel is level-one cylinder barrel, level-one cylinder barrel
It is second level cylinder barrel that inside, which is arranged, and it is three-level cylinder barrel that second level cylinder barrel inner sleeve, which is set, the way to play for time the following steps are included:
One, throttle buffering structure is set between level-one cylinder barrel and second level cylinder barrel, and the throttle buffering structure is, in second level
Multiple throttle orifices of connection level-one cylinder barrel anti-chamber grease chamber and the anti-chamber grease chamber of second level cylinder barrel are offered on cylinder barrel, and make multiple throttle orifices
Stroke-end position in level-one cylinder barrel；
Two, second level Damped structure, the second level Damped structure are set between second level cylinder barrel and three-level cylinder barrel
Second piston ring to be fixedly installed in the right end of second level cylinder barrel, and piston rod is protruded into fixed setting in the inner edge of second piston ring
The second level damper tube of inner cavity is fixedly installed second level damping sleeve in the left end of second level damper tube, the periphery wall of second level damping sleeve is allowed to adopt
With the conical surface left large and right small, allow the right end periphery wall of second level damper tube using the conical surface left small and right large；Meanwhile in three-level cylinder barrel
Three-level piston ring is fixedly installed in right end, and protrudes into the three-stage damping of piston rod cavity in the fixed setting of the inner edge of three-level piston ring
Pipe, three-stage damping pipe sleeve are fixedly installed corresponding and second level on the internal perisporium of three-stage damping pipe and hinder in the outside of second level damper tube
Buddhist nun's set and the positive chamber bumper ring of second level and the anti-chamber bumper ring of second level of the cooperation of second level damper tube right end；
Three, three-stage damping buffer structure, the three-stage damping buffer structure are set between three-stage damping pipe and piston rod
For, allow the periphery wall of three-stage damping pipe using the conical surface left small and right large, and on the right end internal perisporium of piston rod fixed setting with
The anti-chamber bumper ring of three-level of three-stage damping pipe cooperation；
Four, the positive and negative chamber grease chamber for allowing three-level to play perpendicular hydraulic cylinder is connect by external throttle valve with hydraulic fluid sources respectively；
Wherein, multiple throttle orifices described in step 1 include the level-one choke zone being distributed from left to right, two-step throttle area
With three-level choke zone；The throttle orifice of level-one choke zone is axially arranged with 2~6 circles along second level cylinder barrel, and every circle throttle orifice is equipped with 3~8
It is a and be uniformly distributed it along the circumferential direction of second level cylinder barrel；The throttle orifice in two-step throttle area is equipped with 6~24 and makes it along secondary cylinder
The axial direction of cylinder is spirally distributed；The throttle orifice of three-level choke zone is equipped with 2~6 and divides it uniformly along the circumferential of second level cylinder barrel
Cloth.
The present invention also provides the ways to play for time that a kind of level Four plays perpendicular hydraulic cylinder, and it includes hollow that the level Four, which plays perpendicular hydraulic cylinder,
Piston rod and the level Four cylinder barrel that is sequentially sleeved on the outside of piston rod, wherein outermost cylinder barrel is level-one cylinder barrel, level-one cylinder barrel
It is second level cylinder barrel that inside, which is arranged, and it is three-level cylinder barrel that second level cylinder barrel inner sleeve, which is set, and being arranged on the inside of three-level cylinder barrel is level Four cylinder
Cylinder, the way to play for time the following steps are included:
One, throttle buffering structure is set between level-one cylinder barrel and second level cylinder barrel, and the throttle buffering structure is, in second level
Multiple throttle orifices of connection level-one cylinder barrel anti-chamber grease chamber and the anti-chamber grease chamber of second level cylinder barrel are opened up on cylinder barrel, and are made at multiple throttle orifices
In the stroke-end position of level-one cylinder barrel；
Two, second level Damped structure, the second level Damped structure are set between second level cylinder barrel and three-level cylinder barrel
Second piston ring to be fixedly installed in the right end of second level cylinder barrel, and piston rod is protruded into fixed setting in the inner edge of second piston ring
The second level damper tube of inner cavity is fixedly installed second level damping sleeve in the left end of second level damper tube, the periphery wall of second level damping sleeve is allowed to adopt
With the conical surface left large and right small, allow the right end periphery wall of second level damper tube using the conical surface left small and right large；Meanwhile in three-level cylinder barrel
Three-level piston ring is fixedly installed in right end, and protrudes into the three-stage damping of piston rod cavity in the fixed setting of the inner edge of three-level piston ring
Pipe, three-stage damping pipe sleeve are fixedly installed corresponding and second level on the internal perisporium of three-stage damping pipe and hinder in the outside of second level damper tube
Buddhist nun's set and the positive chamber bumper ring of second level and the anti-chamber bumper ring of second level of the cooperation of second level damper tube right end；
Three, three-stage damping buffer structure, the three-stage damping buffer structure are set between three-level cylinder barrel and level Four cylinder barrel
Three-stage damping set to be fixedly installed in the left end of three-stage damping pipe, the periphery wall for allowing three-stage damping to cover is using cone left large and right small
Face allows the right end periphery wall of three-stage damping pipe using the conical surface left small and right large；Meanwhile four are fixedly installed in the right end of level Four cylinder barrel
Grade piston ring, and the level Four damper tube of piston rod cavity is protruded into the fixed setting of the inner edge of level Four piston ring, level Four damps pipe sleeve
In the outside of three-stage damping pipe, corresponding and three-stage damping set and three-stage damping are fixedly installed on the internal perisporium of level Four damper tube
The positive chamber bumper ring of three-level and the anti-chamber bumper ring of three-level of pipe right end cooperation；
Four, level Four Damped structure, the level Four Damped structure are set between level Four damper tube and piston rod
For, allow the periphery wall of level Four damper tube using the conical surface left small and right large, and on the right end internal perisporium of piston rod fixed setting with
The anti-chamber bumper ring of level Four of level Four damper tube cooperation；
Five, the positive and negative chamber grease chamber for allowing level Four to play perpendicular hydraulic cylinder is connect by outer throttle valve with hydraulic fluid sources respectively；
Wherein, multiple throttle orifices described in step 1 include the level-one choke zone being distributed from left to right, two-step throttle area
With three-level choke zone；The throttle orifice of level-one choke zone is axially arranged with 2~6 circles along second level cylinder barrel, and every circle throttle orifice is equipped with 3~8
It is a and be uniformly distributed it along the circumferential direction of second level cylinder barrel；The throttle orifice in two-step throttle area is equipped with 6~24 and makes it along secondary cylinder
The axial direction of cylinder is spirally distributed；The throttle orifice of three-level choke zone is equipped with 2~6 and divides it uniformly along the circumferential of second level cylinder barrel
Cloth.
A kind of multistage perpendicular hydraulic cylinder of the present invention and its way to play for time compared with prior art, have the advantage that this hair
The bright piston rod hollow by setting and the multistage cylinder barrel being sequentially sleeved on the outside of piston rod, wherein outermost cylinder barrel is one
Grade cylinder barrel, it is second level cylinder barrel that level-one cylinder barrel inner sleeve, which is set, left trunnion is fixedly installed in the left end of piston rod, in level-one cylinder barrel
Right trunnion is fixedly installed in right end, and the more of the anti-chamber grease chamber of connection level-one cylinder barrel and the anti-chamber grease chamber of second level cylinder barrel are opened up on second level cylinder barrel
A throttle orifice, and multiple throttle orifices is allowed to be in the stroke-end position of level-one cylinder barrel.Thus just constitute that a kind of structure is simple, control
System is easy, good buffer effect, multistage with long service life play perpendicular hydraulic cylinder.In practical applications, when level-one cylinder barrel reach it is close
When end of travel, multiple throttle orifices towards its anti-chamber grease chamber can be gradually plugged, and the pressure of anti-chamber grease chamber can be increased constantly,
The pressure of its positive and negative chamber grease chamber is reduced, speed is stretched out and slows down；And the pressure of the positive and negative chamber grease chamber of second level cylinder barrel can progressively reach it is flat
It weighs and starts to stretch out, level-one cylinder barrel is not yet arrived to end of travel at this time, will continue to stretch out until end of travel is reached, to realize
Level-one cylinder barrel changes the buffering purpose of grade, it can be achieved that the quick and stable for playing perpendicular hydraulic cylinder is stretched out and recycling, effectively to second level cylinder barrel
Reduction is changed grade impact and is impacted in place.And throttle orifice setting will not be led to liquid because increasing cylinder barrel wall on second level cylinder barrel by the present invention
Cylinder pressure integral diameter and weight increase, and the volume of hydraulic cylinder can be effectively controlled.Way to play for time have simple process, realize be easy,
Feature easy to control.
Shown specific embodiment multistage perpendicular hydraulic cylinder a kind of to the present invention and its way to play for time are made with reference to the accompanying drawing
It is further described:
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of the multistage three-level hydraulic cylinder specific embodiment for playing perpendicular hydraulic cylinder of the present invention；
Fig. 2 is the enlarged diagram of a-quadrant in Fig. 1；
Fig. 3 is a kind of multistage expanded schematic diagram for playing throttle orifice in perpendicular hydraulic cylinder of the present invention；
Fig. 4 is the enlarged diagram of B area in Fig. 1；
Fig. 5 is that second level damping sleeve shows in a kind of multistage three-level hydraulic cylinder specific embodiment for playing perpendicular hydraulic cylinder of the present invention
It is intended to；
Fig. 6 is that three-stage damping pipe shows in a kind of multistage three-level hydraulic cylinder specific embodiment for playing perpendicular hydraulic cylinder of the present invention
It is intended to.
Specific embodiment
Firstly the need of explanation, the nouns of locality such as heretofore described front, back, left, right, up, down only with reference to the accompanying drawings into
Capable description, in order to understand, not to the limitation of technical solution of the present invention and the progress of claimed range.
A multistage perpendicular hydraulic cylinder a kind of to the present invention is specifically described so that three-level plays perpendicular hydraulic cylinder as an example below, such as Fig. 1
To shown in Fig. 6, including hollow piston rod 1 and it is sequentially sleeved at the three-level cylinder barrel in 1 outside of piston rod, wherein outermost cylinder
Cylinder is level-one cylinder barrel 2, and being arranged on the inside of level-one cylinder barrel 2 is second level cylinder barrel 3.Left trunnion is fixedly installed in the left end of piston rod 1,
Right trunnion is fixedly installed in the right end of level-one cylinder barrel 2.The connection anti-chamber grease chamber of level-one cylinder barrel 2 and secondary cylinder are opened up on second level cylinder barrel 3
Multiple throttle orifices 31 of 3 anti-chamber grease chambers of cylinder, and multiple throttle orifices 31 is made to be in the stroke-end position of level-one cylinder barrel 2.By with
Upper structure setting just constitute a kind of structure is simple, control is easy, good buffer effect, three-level with long service life rise erect it is hydraulic
Cylinder.During stretching, when level-one cylinder barrel 2 is reached close to end of travel, towards 31 meeting of multiple throttle orifices of its anti-chamber grease chamber
It is gradually plugged, the pressure of anti-chamber grease chamber can be increased constantly, reduce the pressure difference of its positive and negative chamber grease chamber, stretched out speed and slowed down；
And the pressure of the positive and negative chamber grease chamber of second level cylinder barrel 3 can progressively reach and balance and start to stretch out, level-one cylinder barrel 2 is not yet arrived to stroke at this time
End will continue to stretch out until reach end of travel, thus realize stretch out during level-one cylinder barrel 2 to bit buffering and one
Grade cylinder barrel 2 changes grade buffering purpose to second level cylinder barrel 3.And the present invention will not be because increasing on second level cylinder barrel 3 by throttle orifice setting
Cylinder barrel wall causes hydraulic cylinder integral diameter and weight to increase, and the volume of hydraulic cylinder can be effectively controlled.
As prioritization scheme, present embodiment allows multiple throttle orifices 31 to divide the level-one choke zone to be distributed from left to right
311, two-step throttle area 312 and three-level choke zone 313.Allow the throttle orifice of level-one choke zone 311 along the axial direction setting of second level cylinder barrel 3
2~6 circles allow every circle throttle orifice to be arranged 3~8 and are uniformly distributed it along the circumferential direction of second level cylinder barrel 3.Allow two-step throttle area 312
Throttle orifice be arranged and 6~24 and be spirally distributed it along the axial direction of second level cylinder barrel 3.Allow the throttling of three-level choke zone 313
Hole is arranged 2~6 and is uniformly distributed it along the circumferential direction of second level cylinder barrel 3.The throttle orifice 31 of this structure is in enhancing buffering effect
On the basis of, can effectively avoid causes cushion performance to decline because throttle orifice scratches sealing ring, ensure that the stabilization of hydraulic cylinder performance
Property and service life.It should be noted that in practical applications, level-one choke zone 311, two-step throttle area 312 and three-level throttling
The throttling hole number in area 313 should be specifically arranged according to actual needs.The present invention usually allows the orifice diameter in two-step throttle area 312
Less than the orifice diameter of level-one choke zone 311, and the orifice diameter of three-level choke zone 313 is made to be equal to two-step throttle area 312
Orifice diameter, buffering effect is more preferable.
As specific embodiment, the cylinder barrel being arranged on the inside of second level cylinder barrel 3 is three-level cylinder barrel 4.The present invention is in second level cylinder barrel 3
Right end second piston ring 32 has been fixedly installed, and be fixedly installed in the inner edge of second piston ring 32 and protruded into 1 inner cavity of piston rod
Second level damper tube 33, second level damping sleeve 34 has been fixedly installed in the left end of second level damper tube 33.Allow the outer of second level damping sleeve 34
Peripheral wall uses the conical surface left large and right small.Meanwhile three-level piston ring 41 is fixedly installed in the right end of three-level cylinder barrel 4, and living in three-level
The three-stage damping pipe 42 of 1 inner cavity of piston rod is protruded into the inner edge fixed setting of plug ring 41.Wherein, it is hindered in second level for 42 sets of three-stage damping pipe
The outside of Buddhist nun's pipe 33.The positive chamber of second level cooperated with second level damping sleeve 34 is fixedly installed on the internal perisporium of three-stage damping pipe 42 to buffer
Circle 43.This structure setting is during stretching, when second level cylinder barrel is reached close to end of travel, second level damping sleeve 34 gradually into
Enter the positive chamber bumper ring 43 of second level, since the periphery wall of second level damping sleeve 34 is the conical surface left large and right small, makes gap between the two
Smaller and smaller, that is, the runner for flowing to the positive chamber grease chamber of second level cylinder barrel 3 is smaller and smaller, subtracts the pressure difference of the positive and negative chamber grease chamber of second level cylinder barrel 3
Small, stretching speed slows down, and the pressure of the positive and negative chamber grease chamber of three-level cylinder barrel 4 can progressively reach and balance and start to stretch out, at this time second level
Cylinder barrel 3 is not yet arrived to end of travel, will continue to stretch out until end of travel is reached, to realize second level cylinder barrel during stretching
3 to bit buffering and second level cylinder barrel 3 to three-level cylinder barrel 4 change grade buffering purpose.
As prioritization scheme, present embodiment is by allowing the right end periphery wall of second level damper tube 33 using left small and right large
The conical surface, and on the internal perisporium of three-stage damping pipe 42 and in the positive chamber bumper ring 43 of second level right positions be fixedly installed with
The anti-chamber bumper ring 44 of second level of 33 right end of second level damper tube cooperation.This structure setting is in removal process, when second level cylinder barrel 3 returns
Time receiving, the conical surface of the right end of second level damper tube 33 can progress into the anti-chamber bumper ring 44 of second level, keep the gap of the two smaller and smaller,
That is the runner of the positive chamber grease chamber of second level cylinder barrel 3 reflux is smaller and smaller, becomes the pressure increase recycling speed of the positive chamber grease chamber of second level cylinder barrel 3
It is slow, and a slow cylinder barrel has started to recycle at this time, thus realize second level cylinder barrel 3 in removal process to bit buffering and second level cylinder barrel
3 change grade buffering purpose to level-one cylinder barrel 2.As specific embodiment, the three-level cylinder barrel 4 of three-level hydraulic cylinder is to be set in piston
1 outside of bar.Present embodiment is by allowing the periphery wall of three-stage damping pipe 42 in the conical surface left small and right large, and in piston rod
The anti-chamber bumper ring 11 of three-level cooperated with three-stage damping pipe 42 is fixedly installed on 1 right end internal perisporium, equally can be achieved to recycle
Three-level cylinder barrel 4 changes grade buffering purpose to bit buffering and three-level cylinder barrel 4 to second level cylinder barrel 3 in journey.
The three-level being arranged through the above structure plays perpendicular hydraulic cylinder, during hydraulic cylinder stretches out, passes through multiple throttle orifices 31
Level-one cylinder barrel 2 can be achieved changes grade buffering to bit buffering and level-one cylinder barrel 2 to second level cylinder barrel 3, passes through second level damping sleeve 34
The changing to three-level cylinder barrel 4 to bit buffering and second level cylinder barrel 3 of second level cylinder barrel 3 can be achieved with the cooperation of the positive chamber bumper ring 43 of second level
Grade buffering.The positive chamber of hydraulic cylinder is allowed to connect by external throttle valve with hydraulic fluid sources in practical applications, by controlling outside segments
The flow of stream valve can realize three-level cylinder barrel 4 to bit buffering.Meanwhile in hydraulic cylinder removal process, pass through three-stage damping pipe 42
Arriving to bit buffering and three-level cylinder barrel 4 for three-level cylinder barrel 4 can be achieved in the conical surface of periphery wall and the cooperation of the anti-chamber bumper ring 11 of three-level
Second level cylinder barrel 3 changes grade buffering, can be achieved by the cooperation of the conical surface and the anti-chamber bumper ring 44 of second level of 33 right end of second level damper tube
Second level cylinder barrel 3 changes grade buffering to bit buffering and second level cylinder barrel 3 to level-one cylinder barrel 2, and external throttle valve can realize level-one
Cylinder barrel 2 arrives bit buffering.A set of composite buffering scheme is just constituted by this setting, hydraulic cylinder can be effectively reduced and stretch out and recycle
Impact in place and change grade impact, realize quick and stable operation.
Based on same inventive concept, the present invention also provides a kind of level Four to play perpendicular hydraulic cylinder comprising hollow piston
Bar and the level Four cylinder barrel being sequentially sleeved on the outside of piston rod.Wherein, outermost cylinder barrel is level-one cylinder barrel, level-one cylinder barrel inner sleeve
If being second level cylinder barrel.Left trunnion is fixedly installed in the left end of piston rod, right trunnion is fixedly installed in the right end of level-one cylinder barrel.?
Multiple throttle orifices that connection level-one cylinder barrel anti-chamber grease chamber and the anti-chamber grease chamber of second level cylinder barrel is opened up on second level cylinder barrel, allow multiple throttle orifices
It is provided with the stroke-end position of level-one cylinder barrel.During hydraulic cylinder stretches out, level-one cylinder barrel can be realized by multiple throttle orifices
Change grade buffering to bit buffering and level-one cylinder barrel to second level cylinder barrel.
As prioritization scheme, present embodiment allow multiple throttle orifices be divided into the level-one choke zone being distributed from left to right,
Two-step throttle area and three-level choke zone.The throttle orifice of level-one choke zone is allowed along 2~6 circle of axial setting of second level cylinder barrel, allows every circle
Throttle orifice is arranged 3~8 and is uniformly distributed it along the circumferential direction of second level cylinder barrel.The throttle orifice in two-step throttle area is allowed to be arranged 6~24
It is a and be spirally distributed it along the axial direction of second level cylinder barrel.It allows the throttle orifice of three-level choke zone to be arranged 2~6 and makes it along two
The circumferential direction of grade cylinder barrel is uniformly distributed.The throttle orifice of this structure can effectively avoid on the basis of enhancing buffering effect because of throttling
Hole, which scratches sealing ring, causes cushion performance to decline, and ensure that the stability and service life of hydraulic cylinder performance.
As specific embodiment, the cylinder barrel that second level cylinder barrel inner sleeve is set is three-level cylinder barrel.The present invention is in second level cylinder barrel
Second piston ring has been fixedly installed in right end, and the second level resistance for protruding into piston rod cavity has been fixedly installed in the inner edge of second piston ring
Buddhist nun's pipe, has been fixedly installed second level damping sleeve in the left end of second level damper tube.Allow the periphery wall of second level damping sleeve using left large and right small
The conical surface.Meanwhile three-level piston ring is fixedly installed in the right end of three-level cylinder barrel, and fixed setting is stretched in the inner edge of three-level piston ring
Enter the three-stage damping pipe of piston rod cavity.Wherein, three-stage damping pipe sleeve is in the outside of second level damper tube.In three-stage damping pipe
The positive chamber bumper ring of second level with the cooperation of second level damping sleeve is fixedly installed on peripheral wall.This structure setting is during stretching, when two
When grade cylinder barrel is reached close to end of travel, second level damping sleeve progresses into the positive chamber bumper ring of second level, outer due to second level damping sleeve
Peripheral wall is cone left large and right small, keeps gap between the two smaller and smaller, that is, the runner for flowing to the positive chamber grease chamber of second level cylinder barrel is more next
It is smaller, reduce the pressure difference of the positive and negative chamber grease chamber of second level cylinder barrel, stretches out speed and slow down, and the pressure of the positive and negative chamber grease chamber of three-level cylinder barrel
It can progressively reach and balance and start to stretch out, second level cylinder barrel is not yet arrived to end of travel at this time, will continue to stretch out until reaching stroke
End, thus realize stretch out during the grade of changing to bit buffering and second level cylinder barrel to three-level cylinder barrel of second level cylinder barrel buffer mesh
's.
As specific embodiment, being arranged on the inside of three-level cylinder barrel is level Four cylinder barrel.Right end of the present invention in level Four cylinder barrel
Level Four piston ring has been fixedly installed, and the level Four damping for protruding into piston rod cavity has been fixedly installed in the inner edge of level Four piston ring
Pipe.Wherein level Four damps pipe sleeve in the outside of three-stage damping pipe.Three-stage damping set has been fixedly installed in the left end of three-stage damping pipe,
The periphery wall for allowing three-stage damping to cover has been fixedly installed on the internal perisporium of level Four damper tube and has hindered with three-level in the conical surface left large and right small
Buddhist nun covers the positive chamber bumper ring of three-level of cooperation.Meanwhile allowing the right end periphery wall of three-stage damping pipe using the conical surface left small and right large, four
On the internal perisporium of grade damper tube and the right positions in the positive chamber bumper ring of three-level have been fixedly installed and have matched with three-stage damping pipe right end
The anti-chamber bumper ring of the three-level of conjunction.It, can by the cooperation of three-stage damping set and the positive chamber bumper ring of three-level during hydraulic cylinder stretches out
That realizes three-level cylinder barrel changes grade buffering to bit buffering and three-level cylinder barrel to level Four cylinder barrel.In hydraulic cylinder removal process, lead to
That crosses the achievable three-level cylinder barrel of cooperation of the conical surface and the anti-chamber bumper ring of three-level of three-stage damping pipe right end arrives bit buffering and three-level
Cylinder barrel changes grade buffering to second level cylinder barrel.In addition, level Four cylinder barrel is set on the outside of piston rod as specific embodiment.
The present invention is fixed by allowing the periphery wall of level Four damper tube using the conical surface left small and right large, and on the right end internal perisporium of piston rod
Provided with the anti-chamber bumper ring of level Four cooperated with level Four damper tube, level Four cylinder barrel arrives bit buffering in same achievable removal process
And level Four cylinder barrel changes grade buffering to three-level cylinder barrel.
It should be noted that being based on same inventive concept, the present invention can also be by above-mentioned composite buffering technical solution application
It is same to can be achieved to reduce the skill impacted in place and change grade impact that hydraulic cylinder is stretched out and recycled on 5 grades or more of hydraulic cylinder
Art purpose.
The present invention also provides the ways to play for time that a kind of three-level plays perpendicular hydraulic cylinder.As shown in Figures 1 to 6, three-level is erected hydraulic
Cylinder includes hollow piston rod 1 and the three-level cylinder barrel for being sequentially sleeved at 1 outside of piston rod, wherein outermost cylinder barrel is level-one
Cylinder barrel 2, being arranged on the inside of level-one cylinder barrel 2 is second level cylinder barrel 3, and being arranged on the inside of second level cylinder barrel 3 is three-level cylinder barrel 4.Way to play for time
The following steps are included:
One, throttle buffering structure is set between level-one cylinder barrel 2 and second level cylinder barrel 3.Throttle buffering structure is specifically, two
Multiple throttle orifices 31 of the connection anti-chamber grease chamber of level-one cylinder barrel 2 and the anti-chamber grease chamber of second level cylinder barrel 3 are opened up on grade cylinder barrel 3, and are made multiple
Throttle orifice 31 is in the stroke-end position of level-one cylinder barrel 2.Wherein, multiple throttle orifices include the level-one throttling being distributed from left to right
Area, two-step throttle area and three-level choke zone；Be axially arranged with 2~6 circles of the throttle orifice of level-one choke zone along second level cylinder barrel, every circle section
Discharge orifice is equipped with 3~8 and is uniformly distributed it along the circumferential direction of second level cylinder barrel；The throttle orifice in two-step throttle area is equipped with 6~24 simultaneously
It is spirally distributed it along the axial direction of second level cylinder barrel；The throttle orifice of three-level choke zone is equipped with 2~6 and makes it along second level cylinder barrel
Circumferential direction be uniformly distributed.
Two, second level Damped structure is set between second level cylinder barrel 3 and three-level cylinder barrel 4.Second level Damped structure tool
Body is second piston ring 32 to be fixedly installed in the right end of second level cylinder barrel 3, and fixed setting is protruded into the inner edge of second piston ring 32
The second level damper tube 33 of 1 inner cavity of piston rod is fixedly installed second level damping sleeve 34 in the left end of second level damper tube 33, second level is allowed to damp
The periphery wall of set 34 uses the conical surface left large and right small, allows the right end periphery wall of second level damper tube 33 using the conical surface left small and right large.
Meanwhile three-level piston ring 41 is fixedly installed in the right end of three-level cylinder barrel 4, and fixed setting is protruded into the inner edge of three-level piston ring 41
The three-stage damping pipe 42 of 1 inner cavity of piston rod.Wherein 42 sets of the three-stage damping pipe outsides in second level damper tube 33.In three-stage damping pipe
The corresponding positive chamber of second level cooperated with second level damping sleeve 34 and 33 right end of second level damper tube is fixedly installed on 42 internal perisporium to buffer
Circle 43 and the anti-chamber bumper ring 44 of second level.
Three, three-stage damping buffer structure is set between three-stage damping pipe 42 and piston rod 1.Three-stage damping buffer structure tool
Body is to allow the periphery wall of three-stage damping pipe 42 using the conical surface left small and right large, and fixation is set on the right end internal perisporium of piston rod 1
Set the anti-chamber bumper ring 11 of three-level cooperated with three-stage damping pipe 42.
Four, the positive and negative chamber grease chamber for allowing three-level to play perpendicular hydraulic cylinder is connect by external throttle valve with hydraulic fluid sources respectively.
It has the characteristics that simple process, realization are easy, are easy to control.
The present invention also provides the ways to play for time that a kind of level Four plays perpendicular hydraulic cylinder.It includes hollow work that level Four, which plays perpendicular hydraulic cylinder,
Stopper rod and the level Four cylinder barrel being sequentially sleeved on the outside of piston rod, wherein outermost cylinder barrel is level-one cylinder barrel, level-one cylinder barrel inside
Being arranged is second level cylinder barrel, and it is three-level cylinder barrel that second level cylinder barrel inner sleeve, which is set, and being arranged on the inside of three-level cylinder barrel is level Four cylinder barrel.It is slow
Punching method the following steps are included:
One, throttle buffering structure is set between level-one cylinder barrel and second level cylinder barrel.Throttle buffering structure is specifically, in second level
Multiple throttle orifices of connection level-one cylinder barrel anti-chamber grease chamber and the anti-chamber grease chamber of second level cylinder barrel are opened up on cylinder barrel, and are made at multiple throttle orifices
In the stroke-end position of level-one cylinder barrel.Wherein, multiple throttle orifices include the level-one choke zone being distributed from left to right, two-step throttle
Area and three-level choke zone；The throttle orifice of level-one choke zone along second level cylinder barrel 2~6 circles that are axially arranged with, every circle throttle orifice equipped with 3~
8 and it is uniformly distributed it along the circumferential direction of second level cylinder barrel；The throttle orifice in two-step throttle area is equipped with 6~24 and makes it along secondary cylinder
The axial direction of cylinder is spirally distributed；The throttle orifice of three-level choke zone is equipped with 2~6 and divides it uniformly along the circumferential of second level cylinder barrel
Cloth.
Two, second level Damped structure is set between second level cylinder barrel and three-level cylinder barrel.Second level Damped structure is specific
Second piston ring to be fixedly installed in the right end of second level cylinder barrel, and piston rod is protruded into fixed setting in the inner edge of second piston ring
The second level damper tube of inner cavity is fixedly installed second level damping sleeve in the left end of second level damper tube, the periphery wall of second level damping sleeve is allowed to adopt
With the conical surface left large and right small, allow the right end periphery wall of second level damper tube using the conical surface left small and right large.Meanwhile in three-level cylinder barrel
Three-level piston ring is fixedly installed in right end, and protrudes into the three-stage damping of piston rod cavity in the fixed setting of the inner edge of three-level piston ring
Pipe, three-stage damping pipe sleeve are fixedly installed corresponding and second level on the internal perisporium of three-stage damping pipe and hinder in the outside of second level damper tube
Buddhist nun's set and the positive chamber bumper ring of second level and the anti-chamber bumper ring of second level of the cooperation of second level damper tube right end.
Three, three-stage damping buffer structure is set between three-level cylinder barrel and level Four cylinder barrel.Three-stage damping buffer structure is specific
Three-stage damping set to be fixedly installed in the left end of three-stage damping pipe, the periphery wall for allowing three-stage damping to cover is using cone left large and right small
Face allows the right end periphery wall of three-stage damping pipe using the conical surface left small and right large.Meanwhile four are fixedly installed in the right end of level Four cylinder barrel
Grade piston ring, and the level Four damper tube of piston rod cavity is protruded into the fixed setting of the inner edge of level Four piston ring, level Four damps pipe sleeve
In the outside of three-stage damping pipe, corresponding and three-stage damping set and three-stage damping are fixedly installed on the internal perisporium of level Four damper tube
The positive chamber bumper ring of three-level and the anti-chamber bumper ring of three-level of pipe right end cooperation.
Four, level Four Damped structure is set between level Four damper tube and piston rod.Level Four Damped structure is specific
For, allow the periphery wall of level Four damper tube using the conical surface left small and right large, and on the right end internal perisporium of piston rod fixed setting with
The anti-chamber bumper ring of level Four of level Four damper tube cooperation.
Five, the positive and negative chamber grease chamber for allowing level Four to play perpendicular hydraulic cylinder is connect by outer throttle valve with hydraulic fluid sources respectively.
It has the characteristics that simple process, realization are easy, are easy to control.
Above embodiments are only the descriptions carried out to the preferred embodiment of the present invention, and model not is claimed to the present invention
It encloses and is defined, without departing from the spirit of the design of the present invention, the technology of this field engineers and technicians according to the present invention
The various forms of deformations that scheme is made, should fall within the scope of protection determined by the claims of the present invention.
Claims (8)
1. it is a kind of it is multistage play perpendicular hydraulic cylinder, including hollow piston rod and the multistage cylinder barrel being sequentially sleeved on the outside of piston rod,
In, outermost cylinder barrel is level-one cylinder barrel, and it is second level cylinder barrel that level-one cylinder barrel inner sleeve, which is set, and the left end of the piston rod is fixed with
The right end of left trunnion, the level-one cylinder barrel is fixed with right trunnion, which is characterized in that offers connection level-one on the second level cylinder barrel
Multiple throttle orifices of the anti-chamber grease chamber of cylinder barrel and the anti-chamber grease chamber of second level cylinder barrel, the multiple throttle orifice are in the stroke end of level-one cylinder barrel
End position；The multiple throttle orifice includes the level-one choke zone, two-step throttle area and three-level choke zone being distributed from left to right；It is described
The throttle orifice of level-one choke zone is axially arranged with 2~6 circles along second level cylinder barrel, and every circle throttle orifice is equipped with 3~8 and makes it along second level
The circumferential direction of cylinder barrel is uniformly distributed；The throttle orifice in the two-step throttle area is equipped with 6~24 and makes it be in along the axial direction of second level cylinder barrel
Spiral distribution；The throttle orifice of the three-level choke zone is equipped with 2~6 and is uniformly distributed it along the circumferential direction of second level cylinder barrel.
2. a kind of multistage perpendicular hydraulic cylinder described in accordance with the claim 1, which is characterized in that be arranged on the inside of the second level cylinder barrel
There is three-level cylinder barrel, the right end of second level cylinder barrel is fixed with second piston ring, and the inner edge of second piston ring, which is fixed with, to be protruded into piston rod
The second level damper tube of chamber, the left end of second level damper tube are fixed with second level damping sleeve, and the periphery wall of second level damping sleeve is in left large and right small
The conical surface；The right end of three-level cylinder barrel is fixed with three-level piston ring, and the inner edge of three-level piston ring, which is fixed with, protrudes into piston rod cavity
Three-stage damping pipe, three-stage damping pipe sleeve are located at the outside of second level damper tube, are fixed on the internal perisporium of three-stage damping pipe and second level
The positive chamber bumper ring of second level of damping sleeve cooperation；The right end periphery wall of second level damper tube is in the conical surface left small and right large, three-stage damping pipe
Internal perisporium on and in the positive chamber bumper ring of second level right positions be further fixed on second level damper tube right end cooperation second level it is anti-
Chamber bumper ring.
3. a kind of multistage perpendicular hydraulic cylinder according to claim 2, which is characterized in that the three-level cylinder barrel is set in piston
The outside of bar, the periphery wall of the three-stage damping pipe are in the conical surface left small and right large, are fixed on the right end internal perisporium of the piston rod
There is the anti-chamber bumper ring of three-level with the cooperation of three-stage damping pipe.
4. a kind of multistage perpendicular hydraulic cylinder according to claim 2, which is characterized in that be arranged on the inside of the three-level cylinder barrel
There is level Four cylinder barrel, the right end of level Four cylinder barrel is fixed with level Four piston ring, and the inner edge of level Four piston ring, which is fixed with, to be protruded into piston rod
The level Four damper tube of chamber, level Four damper tube are set in the outside of three-stage damping pipe, and the left end of three-stage damping pipe is fixed with three-level resistance
Buddhist nun's set, the periphery wall of three-stage damping set are in the conical surface left large and right small, are fixed on the internal perisporium of level Four damper tube and three-stage damping
Cover the positive chamber bumper ring of three-level of cooperation, the right end periphery wall of three-stage damping pipe is in the conical surface left small and right large, level Four damper tube it is interior
On peripheral wall and the right positions in the positive chamber bumper ring of three-level are further fixed on and delay with the anti-chamber of three-level of three-stage damping pipe right end cooperation
Punching circle.
5. a kind of multistage perpendicular hydraulic cylinder according to claim 4, which is characterized in that the level Four cylinder barrel is set in piston
The outside of bar, the periphery wall of the level Four damper tube are in the conical surface left small and right large, are fixed on the right end internal perisporium of the piston rod
There is the anti-chamber bumper ring of level Four with the cooperation of level Four damper tube.
6. according to a kind of described in any item multistage perpendicular hydraulic cylinders of claim 1-5, which is characterized in that the two-step throttle area
Orifice diameter be less than the orifice diameter of level-one choke zone, the orifice diameter of the three-level choke zone is equal to two-step throttle
The orifice diameter in area.
7. a kind of three-level plays the way to play for time of perpendicular hydraulic cylinder, the three-level plays perpendicular hydraulic cylinder and includes hollow piston rod and successively cover
The three-level cylinder barrel being located on the outside of piston rod, wherein outermost cylinder barrel is level-one cylinder barrel, and it is second level that level-one cylinder barrel inner sleeve, which is set,
Cylinder barrel, it is three-level cylinder barrel that second level cylinder barrel inner sleeve, which is set, which is characterized in that the way to play for time the following steps are included:
One, throttle buffering structure is set between level-one cylinder barrel and second level cylinder barrel, and the throttle buffering structure is, in second level cylinder barrel
On open up connection level-one cylinder barrel anti-chamber grease chamber and the anti-chamber grease chamber of second level cylinder barrel multiple throttle orifices, and make multiple throttle orifices be in one
The stroke-end position of grade cylinder barrel；
Two, setting second level Damped structure, the second level Damped structure are between second level cylinder barrel and three-level cylinder barrel,
Second piston ring is fixedly installed in the right end of second level cylinder barrel, and piston rod cavity is protruded into fixed setting in the inner edge of second piston ring
Second level damper tube is fixedly installed second level damping sleeve in the left end of second level damper tube, allows the periphery wall of second level damping sleeve using left big
The right small conical surface, allows the right end periphery wall of second level damper tube using the conical surface left small and right large；Meanwhile it is solid in the right end of three-level cylinder barrel
Three-level piston ring is set surely, and protrudes into the three-stage damping pipe of piston rod cavity, three-level in the fixed setting of the inner edge of three-level piston ring
Pipe sleeve is damped in the outside of second level damper tube, be fixedly installed on the internal perisporium of three-stage damping pipe it is corresponding with second level damping sleeve and
The positive chamber bumper ring of second level and the anti-chamber bumper ring of second level of second level damper tube right end cooperation；
Three, three-stage damping buffer structure is set between three-stage damping pipe and piston rod, and the three-stage damping buffer structure is to allow
The periphery wall of three-stage damping pipe uses the conical surface left small and right large, and fixed setting is hindered with three-level on the right end internal perisporium of piston rod
The anti-chamber bumper ring of three-level of Buddhist nun's pipe cooperation；
Four, the positive and negative chamber grease chamber for allowing three-level to play perpendicular hydraulic cylinder is connect by external throttle valve with hydraulic fluid sources respectively；
Wherein, multiple throttle orifices described in step 1 include the level-one choke zone being distributed from left to right, two-step throttle area and three
Grade choke zone；The throttle orifice of level-one choke zone along second level cylinder barrel be axially arranged with 2~6 circle, every circle throttle orifice equipped with 3~8 simultaneously
It is uniformly distributed it along the circumferential direction of second level cylinder barrel；The throttle orifice in two-step throttle area is equipped with 6~24 and makes it along second level cylinder barrel
Axially it is spirally distributed；The throttle orifice of three-level choke zone is equipped with 2~6 and is uniformly distributed it along the circumferential direction of second level cylinder barrel.
8. a kind of level Four plays the way to play for time of perpendicular hydraulic cylinder, the level Four plays perpendicular hydraulic cylinder and includes hollow piston rod and successively cover
The level Four cylinder barrel being located on the outside of piston rod, wherein outermost cylinder barrel is level-one cylinder barrel, and it is second level that level-one cylinder barrel inner sleeve, which is set,
Cylinder barrel, it is three-level cylinder barrel that second level cylinder barrel inner sleeve, which is set, and being arranged on the inside of three-level cylinder barrel is level Four cylinder barrel, which is characterized in that institute
State way to play for time the following steps are included:
One, throttle buffering structure is set between level-one cylinder barrel and second level cylinder barrel, and the throttle buffering structure is, in second level cylinder barrel
On open up connection level-one cylinder barrel anti-chamber grease chamber and the anti-chamber grease chamber of second level cylinder barrel multiple throttle orifices, and make multiple throttle orifices be in one
The stroke-end position of grade cylinder barrel；
Two, setting second level Damped structure, the second level Damped structure are between second level cylinder barrel and three-level cylinder barrel,
Second piston ring is fixedly installed in the right end of second level cylinder barrel, and piston rod cavity is protruded into fixed setting in the inner edge of second piston ring
Second level damper tube is fixedly installed second level damping sleeve in the left end of second level damper tube, allows the periphery wall of second level damping sleeve using left big
The right small conical surface, allows the right end periphery wall of second level damper tube using the conical surface left small and right large；Meanwhile it is solid in the right end of three-level cylinder barrel
Three-level piston ring is set surely, and protrudes into the three-stage damping pipe of piston rod cavity, three-level in the fixed setting of the inner edge of three-level piston ring
Pipe sleeve is damped in the outside of second level damper tube, be fixedly installed on the internal perisporium of three-stage damping pipe it is corresponding with second level damping sleeve and
The positive chamber bumper ring of second level and the anti-chamber bumper ring of second level of second level damper tube right end cooperation；
Three, setting three-stage damping buffer structure, the three-stage damping buffer structure are between three-level cylinder barrel and level Four cylinder barrel,
Three-stage damping set is fixedly installed in the left end of three-stage damping pipe, and the periphery wall for allowing three-stage damping to cover is allowed using the conical surface left large and right small
The right end periphery wall of three-stage damping pipe uses the conical surface left small and right large；Meanwhile it is living in the right end of level Four cylinder barrel fixed setting level Four
Plug ring, and the level Four damper tube of piston rod cavity is protruded into the fixed setting of the inner edge of level Four piston ring, level Four damps pipe sleeve three
The outside of grade damper tube is fixedly installed corresponding right with three-stage damping set and three-stage damping pipe on the internal perisporium of level Four damper tube
Hold the positive chamber bumper ring of three-level and the anti-chamber bumper ring of three-level of cooperation；
Four, level Four Damped structure is set between level Four damper tube and piston rod, and the level Four Damped structure is to allow
The periphery wall of level Four damper tube uses the conical surface left small and right large, and fixed setting is hindered with level Four on the right end internal perisporium of piston rod
The anti-chamber bumper ring of level Four of Buddhist nun's pipe cooperation；
Five, the positive and negative chamber grease chamber for allowing level Four to play perpendicular hydraulic cylinder is connect by outer throttle valve with hydraulic fluid sources respectively；
Wherein, multiple throttle orifices described in step 1 include the level-one choke zone being distributed from left to right, two-step throttle area and three
Grade choke zone；The throttle orifice of level-one choke zone along second level cylinder barrel be axially arranged with 2~6 circle, every circle throttle orifice equipped with 3~8 simultaneously
It is uniformly distributed it along the circumferential direction of second level cylinder barrel；The throttle orifice in two-step throttle area is equipped with 6~24 and makes it along second level cylinder barrel
Axially it is spirally distributed；The throttle orifice of three-level choke zone is equipped with 2~6 and is uniformly distributed it along the circumferential direction of second level cylinder barrel.
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| CN113738732B (en) * | 2021-08-16 | 2023-05-16 | 中国长江电力股份有限公司 | Multidirectional variable-quality core three-stage elastic damping vibration suppression device for hydraulic cylinder of gate hoist |
| CN117605733B (en) * | 2024-01-22 | 2024-03-19 | 张家口长城液压油缸有限公司 | Multistage telescopic erection hydraulic cylinder with core pipe structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5939603B2 (en) * | 1979-02-09 | 1984-09-25 | 新明和工業株式会社 | Multi-stage cylinder shock absorber |
| DE20106764U1 (en) * | 2001-04-19 | 2001-07-19 | Schlutz Heinz | Mining cylinder with coating |
| CN201121618Y (en) * | 2007-03-21 | 2008-09-24 | 北京航天发射技术研究所 | Normal and inverse cavity throttling buffering multilevel hydraulic cylinder |
| CN103090749B (en) * | 2011-11-01 | 2016-01-13 | 北京航天发射技术研究所 | For launching tube with play perpendicular hydraulic cylinder and disconnect or the coupling arrangement that connects and method |
| CN202418094U (en) * | 2011-12-01 | 2012-09-05 | 烟台未来自动装备有限责任公司 | Anti-swelling multi-stage hydraulic cylinder used for sanitation vehicle |
| CN102767548A (en) * | 2012-07-26 | 2012-11-07 | 三一矿机有限公司 | Multi-stage hydraulic cylinder and mining self-dumping truck |
| CN202833410U (en) * | 2012-08-15 | 2013-03-27 | 江苏昌力油缸有限公司 | Multi-stage hydro-cylinder with buffering function |
| CN103671348A (en) * | 2013-12-17 | 2014-03-26 | 湘电重型装备有限公司 | Lifting hydraulic oil cylinder of mining dump truck |
| WO2016001428A1 (en) * | 2014-07-04 | 2016-01-07 | Binotto - S.R.L. | Telescopic hydraulic cylinder |
| CN105673611B (en) * | 2016-04-19 | 2017-09-12 | 北京航天发射技术研究所 | A kind of two-action multi-stage anti-rotation hydraulic cylinder |
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