CN109667874A - A kind of hydraulic damping device - Google Patents
A kind of hydraulic damping device Download PDFInfo
- Publication number
- CN109667874A CN109667874A CN201811504481.4A CN201811504481A CN109667874A CN 109667874 A CN109667874 A CN 109667874A CN 201811504481 A CN201811504481 A CN 201811504481A CN 109667874 A CN109667874 A CN 109667874A
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- China
- Prior art keywords
- drainback passage
- pedestal
- chamber
- piston rod
- stem
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000013016 damping Methods 0.000 title claims abstract description 37
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 21
- 239000000446 fuel Substances 0.000 claims abstract description 11
- 230000008859 change Effects 0.000 claims abstract description 3
- 230000007246 mechanism Effects 0.000 claims description 13
- 239000003921 oil Substances 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 230000002427 irreversible effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 23
- 230000008569 process Effects 0.000 description 18
- 230000000694 effects Effects 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- F16F9/48—Arrangements for providing different damping effects at different parts of the stroke
- F16F9/49—Stops limiting fluid passage, e.g. hydraulic stops or elastomeric elements inside the cylinder which contribute to changes in fluid damping
Abstract
The invention discloses a kind of hydraulic damping devices, and the end cap and pedestal at cylinder body both ends are set to including cylinder body, piston component, Fuel Tanking Unit；Piston component is slidably matched with cylinder body, and Fuel Tanking Unit is logical to be connected with second chamber；Piston rod passes through the end cap and piston component is connected；Piston component and piston rod are disposed an outwardly facing the first drainback passage of pedestal；First drainback passage depth is adapted with piston rod stroke；Piston rod is located at first chamber side and has been arranged radially at least one first oil-through hole；The upper surface of pedestal is fixed with the stem being fixed in the first drainback passage, there are the gaps passed through for hydraulic oil between stem and the first drainback passage, the stem includes the cylindrical portion close to pedestal one end and the gradual change portion far from pedestal one end, and the cylindrical portion is inverted round table structure.The present invention has effectively adapted to complex working condition by above-mentioned simple structure, reduces production cost, improves the stability of damping unit.
Description
Technical field
The present invention relates to damping unit, especially a kind of hydraulic damping device
Background technique
Damper is to provide the resistance of movement, the device of depletion kinergety.With good energy-absorbing damping effect,
It is largely used in production and living.But as present existing operating condition becomes increasingly complex, in order to adapt to therewith, damper
Structure also becomes increasingly complex, to improve the production cost of damper.Complicated structure makes the stability of damper simultaneously
It is relatively poor, the normal work of time cannot be produced.
Summary of the invention
Hydraulic damping device that is simple the purpose of the present invention is to provide a kind of structure and can adapt to complex working condition.
In order to realize the above technical effect, the technical solution of the present invention is as follows:
A kind of hydraulic damping device, it is characterised in that: including columnar cylinder body, be set to the intracorporal piston component of cylinder, set up
Fuel Tanking Unit outside cylinder body and the end cap and pedestal for being divided into cylinder body both ends；
The end cap and piston component form in first chamber, pedestal and piston component and cylinder body in cylinder body and form second
Chamber；
The Fuel Tanking Unit is connected by the oil passage being set on pedestal with second chamber；
Piston rod passes through the end cap and piston component is connected；Piston component and piston rod are disposed an outwardly facing the first of pedestal
Drainback passage；The first drainback passage depth is adapted with piston rod stroke；
The piston rod be located at first chamber side be arranged radially be connected with the first drainback passage at least one
One oil-through hole；
The upper surface of the pedestal is fixed with the stem being fixed in the first drainback passage, stem and the first drainback passage it
Between there are the gap passed through for hydraulic oil, the stem include close to pedestal one end cylindrical portion and far from pedestal one end column
Shape portion, the cylindrical portion are inverted round table structure.
Further, stem is internally provided with the second longitudinally through drainback passage；It is provided in pedestal in U shape structure
Third drainback passage, third drainback passage both ends are connected with first chamber, third drainback passage one end and the
Two drainback passages are connected；The unidirectionally controlled machine for being pressed on the second drainback passage port is provided in the third drainback passage
Structure；The regulating mechanism for adjusting third drainback passage flow is also equipped in the pedestal.
Further, the regulating mechanism is the taper pin being screwed on pedestal, and the taper pin end vertical passes through third
Drainback passage.
Further, it is provided in the pedestal and is connected what one end was connected to second chamber with one end third drainback passage
Overflow ducts are provided with excess flow protection device in the overflow ducts.
Further, it is provided with third chamber in the piston component, is provided in the third chamber and is set in stem
On sliding sleeve, the first bulge loop is set outside the sliding sleeve, first bulge loop is slidably matched with third chamber inner wall；The sliding sleeve
The second bulge loop of inside setting, the second bulge loop internal diameter are not more than the first drainback passage internal diameter；The sliding sleeve is under the first bulge loop
Side is provided at least one second oil-through hole.
Further, it is provided with the elastic element being pressed between sliding sleeve and third chamber in the third chamber, the bullet
Property element to sliding sleeve apply an active force towards pedestal.
Further, the stem is provided with the second drainback passage of connection and third oil return close to third drainback passage one end
The third oil-through hole in channel.
The invention has the benefit that by the setting of cylindrical portion and cylindrical portion in stem, so that damping unit is in piston
When the first disengaging oilhole that bar stretches out piston rod in procedure is in cylindrical portion horizontal position, because of the first drainback passage and core
The clearance channel of intercolumniation is relatively large, i.e. damping force is smaller and piston rod is quickly stretched out.And with piston rod after
It is continuous to stretch out, when the first disengaging oilhole is in above cylindrical portion, enter for hydraulic oil from first chamber between piston rod and stem
The sectional area of clearance channel into second chamber is gradually reduced, to limit the instantaneous throughput of hydraulic oil, plays increasing
Big damping force quickly reduces the effect that piston rod stretches out rate.
Detailed description of the invention
Fig. 1 is schematic perspective view of the invention；
Fig. 2 is the structural schematic diagram when present invention is in stop working state；
Fig. 3 is the structural schematic diagram when present invention stretches out process leading portion in piston rod；
Fig. 4 is the structural schematic diagram when present invention stretches out process back segment in piston rod；
Fig. 5 is the structural schematic diagram that inventive piston bar is in Recovery Process；
Fig. 6 is stereo decomposing Fig. 1 of the invention；
Fig. 7 is stereo decomposing Fig. 2 of the invention；
Fig. 8 is the cross-sectional view of the structure of piston only；
Fig. 9 is the cross-sectional view of the structure of sliding sleeve；
Figure 10 is the structural schematic diagram of pedestal；
Figure 11 is the cross-sectional view of the structure of third drainback passage in pedestal；
Figure 12 is the cross-sectional view of the structure of overflow ducts in pedestal.
Appended drawing reference: 100. cylinder body, 110. upper port, 120. lower port, 130. first chamber, 140. second chamber
Room 200. piston component, 210. third chamber, 220. sliding sleeve, 221. first bulge loop, 222. second bulge loops 223. second are excessively oily
Hole 230. leads to 500. pedestal of lid 240. elastic element, 300. Fuel Tanking Unit, 400. end cap, 510. third drainback passage 520.
It adjusts 521. 531. fixed part of steel ball 522. first spring, 530. regulating mechanism of irreversible control, 532. positioning region 533.
553. plug screw 560. of section portion 540. overflow ducts, 550. excess flow protection device, 551. plugging structure, 552. second spring pressure
It is excessively oily to cover 570. oil passage, 600. pull rod, 700. piston rod 710. firstHole800. first drainback passage, 900. stem
910. cylindrical portion, 920. 930. second drainback passage of cylindrical portion, 940. third oil-through hole
Specific embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for
Purpose is described, relative importance is not understood to indicate or imply or implicitly indicates the quantity of indicated technical characteristic.
" first " is defined as a result, the feature of " second " can explicitly or implicitly include one or more feature.?
In description of the invention, the meaning of " plurality " is two or more, unless otherwise specifically defined.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected or can mutually communicate；It can be directly connected, it can also be by between intermediary
It connects connected, can be the connection inside two elements or the interaction relationship of two elements.For the ordinary skill of this field
For personnel, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include fisrt feature right above second feature and oblique upper, or be merely representative of
First feature horizontal height is less than second feature.
Following disclosure provides many different embodiments or example is used to realize different structure of the invention.In order to
Simplify disclosure of the invention, hereinafter the component of specific examples and setting are described.Certainly, they are merely examples, and
And it is not intended to limit the present invention.In addition, the present invention can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, itself not indicate between discussed various embodiments and/or setting
Relationship.In addition, the present invention provides various specific techniques and material example, but those of ordinary skill in the art can be with
Recognize the application of other techniques and/or the use of other materials.
A kind of hydraulic damping device as shown in Figure 1, including columnar cylinder body 100, piston component 200, Fuel Tanking Unit 300
(not shown), end cap 400 and pedestal 500.
Piston component as shown in FIG. 6 including piston only 210 and is set to the sealing ring 211 at piston only both ends；Such as
Shown in Fig. 2~Fig. 5, piston component 200 is slidably arranged on cylinder interior；End cap 400 is mounted on the upper port of cylinder body
110, pedestal 500 is mounted on the lower port 120 of cylinder body, and the fixed form of end cap 400 and pedestal 500 on cylinder body are as follows:
Through-hole there are four opening up on four angles of end cap, there are four threaded holes compatible with through-hole on end cap for setting on pedestal.So
The two is tensed by four pull rods 600 and is fixed on the upper and lower part port of cylinder body by rear base and pull rod.And in order to increase
Leakproofness between strong pedestal and end cap and cylinder body, in the plane of end cap 400 and pedestal 500 towards cylinder body, i.e. end cap 400
Lower surface is respectively arranged with sealing rubber ring on the upper surface of pedestal 500.
As shown in Figure 1, when end cap and pedestal are closely fixed on cylinder body both ends, end cap 400 and piston component 200 it
Between in cylinder body formed a first chamber 130, between pedestal 500 and piston component 200 in cylinder body formed second chamber
Room 140；In cylinder intracorporal movement phase can occur for volume between first chamber 130 and second chamber 140 with piston component
The variation answered.
Meanwhile it being attached to the Fuel Tanking Unit 300 outside cylinder body 100 and being arranged in pedestal 500 by as shown in Figure 10
Oil passage 570 is connected with second chamber 140.The effect of Fuel Tanking Unit is to cache in the present embodiment because of the first chamber
Room and second chamber volume change and have more or lack come hydraulic oil.
Piston rod 700 passes through the center that end cap is fixedly mounted on piston component.Wherein piston rod and piston component it
Between for be threadedly coupled.In order to which when damping unit works, the hydraulic oil in first chamber and second chamber can circulate mutually,
Piston component and piston rod inner are provided with first drainback passage 800, first drainback passage is complete through piston component
Portion simultaneously extends in piston rod 700, and in order to guarantee the intensity of piston rod and piston component, the first drainback passage is arranged in piston
The center of bar 700 and piston component 200.Simultaneously in order to be connected to the first drainback passage 800 and first chamber 130, in piston
Bar, which is located on the cylindrical surface of the side of first chamber, offers at least one first oil-through hole 710, in the present embodiment, in order to add
The disengaging rate of fast hydraulic oil, the quantity of the first oil-through hole 710 are 4, and high in 90 ° of the same level for being evenly arranged on piston rod
On degree.And for the maximum amount of effective active length for increasing piston rod, 710 present position of the first oil-through hole is as far as possible close to piston
At component.
And in order to quickly reduce the present embodiment by the stretching speed of piston rod after piston rod stretches out process,
A stem 900 is fixed in first drainback passage 800, and in order to easy to process, which is T-type structure, and is passed through
One pressing sleeve 560 is fixed in the base, is threadedly coupled between pressing sleeve and pedestal.Wherein 900 outer rim of stem with first time
There is the clearance channels passed through for hydraulic oil between oily channel 800, and in order to guarantee that stem can be in this damping unit
The back segment that piston rod stretches out process can play good reduction of speed damping action, and the length of stem 900 is most not less than piston rod
Big extension elongation, while the depth of the first drainback passage 800 is not less than the length of stem.
Simultaneously as shown in fig. 7, stem is divided into upper and lower two parts, wherein be cylindrical portion 910 close to one section of pedestal, it is separate
One section of pedestal is cylindrical portion 920.Cylindrical portion 910 is the constant cylindrical structure in cross section, and cylindrical portion 920 be from cylindrical portion
The inverted round table structure that 910 junctions become larger to the top end far from pedestal for cross section, and for damping unit reduction of speed
Process it is smooth, prevent the machinery being connected with damper from biggish vibration occur, be flat between cylindrical portion 920 and cylindrical portion 910
It slips over and crosses.
The working principle of the present embodiment are as follows: when damping unit is in the leading portion that piston rod stretches out process, on piston rod the
Between the clearance channel that one oil-through hole 710 is located at the first drainback passage 800 and cylindrical portion 910 is formed, at this time because of cylindrical portion 910
Sectional area is smaller, therefore its clearance channel sectional area formed between the first drainback passage is larger, and hydraulic oil throughput is opposite
Larger, the damping force that piston rod is subject to is smaller, thus ensure that damping unit piston rod can stretch out process leading portion it is fast
Speed is stretched out；And when damping unit is in the back segment that piston rod stretches out process, the first oil-through hole is located at cylindrical portion 920 and first at this time
Between the clearance channel that drainback passage 800 is formed, at this time with the stretching of piston rod, the horizontal position of the first oil-through hole 710 with
Rising, and with the rising of the first oil-through hole, present position also causes because of 920 becoming larger for sectional area of cylindrical portion
Its clearance channel formed between the first drainback passage is also gradually reduced, and with the reduction of clearance channel, first chamber 130
In hydraulic oil enter the speed of second chamber 140 and also reduce therewith, so that the stretching speed for showing as piston rod 700 is also delayed
It is slow to reduce；Damping force fast lifting therewith, so that play quickly reduces the effect that piston rod stretches out rate well.
Preferably, it is adjusted in order to stretch out the speed that piston rod 700 stretches out in process back segment to piston rod, such as schemes
7, in the second drainback passage 930 for being internally provided with a longitudinally through stem of stem 900 shown in Figure 10 and Figure 11；And the bottom of at
An one end is provided in seat 500 to be connected with the second oil returning tube the third drainback passage that the other end is connected with second chamber
510, which is U-shaped structure, and the port cross-sectional being connected to the second drainback passage is larger, positioned at the center of pedestal
Position, and it is provided with screw thread compatible with pressing sleeve 560, to facilitate pressing sleeve to fix stem.The other end is connected with second chamber
Logical port cross-sectional product is relatively small, and is located at the marginal position of pedestal, to avoid the stem 900 being fixed on the base, prevents
It is blocked by stem outlet port.In the port that third drainback passage 510 is connect with the second drainback passage 930, it is additionally provided with energy
Enough make hydraulic oil can only unidirectional slave first chamber 130 flow to the irreversible control 520 of second chamber 140, this is unidirectionally controlled
Mechanism includes the steel ball 521 for being pushed against the second drainback passage 930 and being located at the port of stem lower part, is arranged in 521 lower part of steel ball
There is the first spring 522 of the thrust for applying 930 port of the second drainback passage of direction to steel ball, and in order to promote steel
For pearl to the sealing effect of the second drainback passage 930, the port that the second drainback passage 930 is located at stem lower part is bell-mouth structure of air.
It is also equipped with the adjusting machine that can adjust hydraulic oil throughput in third drainback passage 510 in the base simultaneously
Structure 530, regulating mechanism 530 is a taper pin being screwed on pedestal in the present embodiment.The taper pin includes screwed solid
Determine portion 531, positioning region 532 used for positioning, and the adjustment portion 533 for adjusting hydraulic fluid flow rate in third drainback passage.
And for convenience in process in the base with mounting hole compatible with the regulating mechanism is beaten, fixed part is with positioning region
Step structure that is cylindric, and being sequentially reduced for diameter, in positioning region, outer rim is provided with compatible in the mounting hole with pedestal
Screw thread；And adjustment portion is taper pin structure, and what is extended vertically through passes through third drainback passage.
The working principle of regulating mechanism are as follows: to third drainback passage 510 there are two adjusting endpoints, one is regulating mechanism
Complete open state, i.e., the adjustment portion 533 in regulating mechanism exit third drainback passage 510, at this time liquid in third drainback passage
The throughput of pressure oil also reaches maximum, and the damping that piston rod stretches out process back segment is relatively small, and piston rod stretches out rate phase
To very fast.There are one being exactly completely closed state, the adjustment portion on regulating mechanism protrudes fully into third drainback passage at this time
In, i.e., third drainback passage adjustable unit blocks completely, does not have hydraulic oil in third drainback passage thence through entering second
In chamber 140, the damping that piston rod stretches out process back segment at this time reaches maximum, and piston rod stretches out the slowing effect of rate
Reach maximum.And the adjusting of the damping between endpoint is adjusted at two, adjusting machine only need to be tightened or unscrewed outward inwards
Structure can be realized.
In the present embodiment, the damping action that piston rod stretches out process back segment also increases first chamber 130 in piston rod
Pressure when stretching process back segment, and damping unit because pressure is excessive leads to detonation in order to prevent, as shown in figure 12, the bottom of at
The overflow ducts 540 that an one end is connected with third drainback passage 510 are additionally provided in seat 500, the overflow ducts are another
End is connected with second chamber 140, is then provided with an excess flow protection device 550, the excess flow protection device in overflow ducts 540
It is mounted in the overflow hole 560 being opened on pedestal, overflow hole face overflow ducts oil inlet direction setting, and overflow hole is straight
Diameter is greater than overflow ducts diameter, so that excess flow protection device can block overflow ducts completely.Wherein excess flow protection device packet
Include plugging structure 551 of the closure of face on overflow ducts, which is the pin shaft of a T-type structure, diameter compared with
Big head blocks on overflow ducts, and the second spring 552 being set on plugging structure, 552 pairs of second spring envelopes
Stifled mechanism applies the pressure towards hydraulic oil approach axis in overflow ducts, and then still has one on pedestal and be screwed onto
Second spring 552 is pressed to hydraulic oil plugging structure direction by the plug screw 553 on overflow hole, the plug screw.Meanwhile in order to guarantee overflow
The normal work of protective device, second spring 552 are greater than the first spring 522 to the pressure that plugging structure applies and apply to steel ball 521
The pressure added, it is preferred that second spring is also less than the pressure that cylinder body is able to bear to the pressure for sealing structure application.
In the damping unit course of work, the stretching speed of piston rod is reduced in addition to needing to stretch out process back segment in piston rod
Degree, while also needing that there is faster response speed during piston rod is replied, and faster response speed generally requires
Hydraulic oil in second chamber 140 can quickly flow back into first chamber 130.
In the present embodiment, in order to promote response speed, accelerate oil return speed.As shown in figure Fig. 2~Fig. 5 and Fig. 8, in piston
A third chamber 212 is provided in the piston only of component, which is located at piston component 200 towards pedestal
Side, and the sliding sleeve 220 that can be slided wherein as shown in Figure 9 is provided in third chamber, which is set in core
On column, through-hole diameter is not less than the diameter of the first drainback passage.
It is provided with first bulge loop 221 being looped around outside it on the sliding sleeve simultaneously, one is then provided with inside sliding sleeve
A the second bulge loop 222 around its outer wall, first bulge loop 221 and the second bulge loop 222 and sliding sleeve concentrically line.Wherein first is convex
It is slidably matched between ring and third chamber inner wall.And the internal diameter of the second bulge loop is then not more than the diameter of the first drainback passage.To
The effect of an increase damping force can be further played, and the horizontal position of the first bulge loop is higher than the level of the second bulge loop
Position.It slides over and is additionally provided at least one the second oil-through hole 223 positioned at the position of the lower section of the first bulge loop, this is second excessively oily
Hole is connected with the through-hole at sliding sleeve center.
And in order to which sliding sleeve to be maintained in third chamber, and facilitate the assembly of sliding sleeve.As shown in fig. 6, in third chamber face
It is provided with screw thread to the port of pedestal, and is bolted with a logical lid 230 at the port.The logical lid 230 is set on stem.
And the diameter of the through-hole of the logical lid is greater than the internal diameter of the second bulge loop, less than the outer diameter of the first bulge loop.
Simultaneously when sliding sleeve is closely attached on logical cover, the second oil-through hole 223 is not attached to lead to second chamber 140, and works as sliding sleeve
When separating between 220 and logical lid, the second oil-through hole is then connected with second chamber.With this come realize when piston rod stretch out when,
Under the pressure effect of hydraulic oil, sliding sleeve being adjacent on logical lid 230 tightly, the second oil-through hole is not attached to lead to second chamber, liquid
Pressure oil cannot be rapidly introduced into second chamber from the second oil-through hole.Maintain the resistance that the present invention stretches out process back segment in piston rod
Buddhist nun's effect.And when damping unit is in reseting procedure, sliding sleeve 220 in second chamber 140 under the action of hydraulic oil by
On boost, the second oil-through hole is connected with second chamber at this time, and hydraulic oil is rapidly introduced into first chamber from the second oil-through hole,
To reach the process of a quick response.
And in order to guarantee that sliding sleeve 220 is not attached between its second oil-through hole and second chamber during piston rod stretches out
It is logical, the elastic element 240 being pressed between sliding sleeve and third chamber upper wall is being provided in third chamber, it is preferred that the elasticity
Element is spring.
Preferably, in order to there is the disengaging for accelerating the hydraulic oil in Fuel Tanking Unit in cylinder body, as shown in Fig. 7,
(close to third drainback passage one end) is provided with the third mistake of connection the second drainback passage 930 and third drainback passage for stem bottom
Oilhole 940.The third oil-through hole is arranged radially.
Claims (7)
1. a kind of hydraulic damping device, it is characterised in that: including columnar cylinder body, be set to the intracorporal piston component of cylinder, be attached to
Fuel Tanking Unit outside cylinder body and the end cap and pedestal for being divided into cylinder body both ends；
The end cap and piston component form in first chamber, pedestal and piston component and cylinder body in cylinder body and form the second chamber
Room；
The Fuel Tanking Unit is connected by the oil passage being set on pedestal with second chamber；
Piston rod passes through the end cap and piston component is connected；Piston component and piston rod are disposed an outwardly facing the first oil return of pedestal
Channel；The first drainback passage depth is adapted with piston rod stroke；
The piston rod is located at first chamber side and is arranged radially at least one first mistake being connected with the first drainback passage
Oilhole；
The upper surface of the pedestal is fixed with the stem being fixed in the first drainback passage, stays between stem and the first drainback passage
There is the gap passed through for hydraulic oil, the stem includes the cylindrical portion close to pedestal one end and the gradual change far from pedestal one end
Portion, the cylindrical portion are inverted round table structure.
2. a kind of hydraulic damping device as described in claim 1, it is characterised in that: stem is internally provided with longitudinally through the
Two drainback passages；The third drainback passage for the structure that is in U-shape, third drainback passage both ends and first chamber are provided in pedestal
It is connected, third drainback passage one end is connected with the second drainback passage；It is provided with and compresses in the third drainback passage
Irreversible control in the second drainback passage port；The adjusting for adjusting third drainback passage flow is also equipped in the pedestal
Mechanism.
3. a kind of hydraulic damping device as claimed in claim 2, it is characterised in that: the regulating mechanism is to be screwed on pedestal
Taper pin, the taper pin end vertical pass through third drainback passage.
4. a kind of hydraulic damping device as claimed in claim 2 or claim 3, it is characterised in that: be provided in the pedestal and one end
Third drainback passage is connected the overflow ducts that one end is connected to second chamber, and overflow protection dress is provided in the overflow ducts
It sets.
5. a kind of hydraulic damping device as claimed in claim 4, it is characterised in that: be provided with third chamber in the piston component
Room is provided with the sliding sleeve being set on stem in the third chamber, the first bulge loop is arranged outside the sliding sleeve, described first is convex
Ring is slidably matched with third chamber inner wall；Second bulge loop is set inside the sliding sleeve, and the second bulge loop internal diameter is not more than first
Drainback passage internal diameter；The sliding sleeve is provided at least one second oil-through hole below the first bulge loop.
6. a kind of hydraulic damping device as claimed in claim 5, it is characterised in that: be provided with and be pressed in the third chamber
Elastic element between sliding sleeve and third chamber, the elastic element apply an active force towards pedestal to sliding sleeve.
7. a kind of hydraulic damping device as claimed in claim 6, it is characterised in that: the stem is close to third drainback passage one
End is provided with the third oil-through hole of connection the second drainback passage and third drainback passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811504481.4A CN109667874B (en) | 2018-12-10 | 2018-12-10 | Hydraulic damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811504481.4A CN109667874B (en) | 2018-12-10 | 2018-12-10 | Hydraulic damping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109667874A true CN109667874A (en) | 2019-04-23 |
| CN109667874B CN109667874B (en) | 2023-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811504481.4A Active CN109667874B (en) | 2018-12-10 | 2018-12-10 | Hydraulic damping device |
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| CN (1) | CN109667874B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113187400A (en) * | 2021-05-07 | 2021-07-30 | 中海油田服务股份有限公司 | Rotatory speed limit sprays instrument that floats |
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| US6378850B1 (en) * | 1999-09-06 | 2002-04-30 | Tokai Rubber Industries, Ltd. | Fluid-filled vibration damping device having improved partition structure |
| CN104074909A (en) * | 2013-03-29 | 2014-10-01 | 株式会社昭和 | Hydraulic shock absorbing apparatus |
| CN105134857A (en) * | 2015-06-04 | 2015-12-09 | 周海兵 | Anti-shake car shock absorber |
| CN209671505U (en) * | 2018-12-10 | 2019-11-22 | 浙江逸帅机电科技有限公司 | A kind of hydraulic damping device |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0017684A1 (en) * | 1979-04-23 | 1980-10-29 | Showa Manufacturing Co., Ltd. | Hydraulic cylinder for a propulsion unit of an inboard or outboard motor |
| US6378850B1 (en) * | 1999-09-06 | 2002-04-30 | Tokai Rubber Industries, Ltd. | Fluid-filled vibration damping device having improved partition structure |
| DE10026970A1 (en) * | 2000-05-31 | 2001-12-06 | Volkswagen Ag | Elastomer spring especially for shock absorber assemblies has sleeve with axial section which in cross section is constructed with oval outer contour and which has corrugated generated surface |
| CN104074909A (en) * | 2013-03-29 | 2014-10-01 | 株式会社昭和 | Hydraulic shock absorbing apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113187400A (en) * | 2021-05-07 | 2021-07-30 | 中海油田服务股份有限公司 | Rotatory speed limit sprays instrument that floats |
| CN113187400B (en) * | 2021-05-07 | 2022-10-18 | 中海油田服务股份有限公司 | Rotatory speed limit sprays instrument that floats |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109667874B (en) | 2023-09-22 |
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Address after: 314007 1st and 3rd floors of building 4, No. 479, Xinke Road, Fengqiao town, Nanhu District, Jiaxing City, Zhejiang Province Patentee after: Zhejiang Yishuai Electromechanical Technology Co.,Ltd. Country or region after: China Address before: 314000 Second and Third Floors, No. 20 East Road, Fengqiao Town, Nanhu District, Jiaxing City, Zhejiang Province Patentee before: ZHEJIANG YISHUAI ELECTROMECHANICAL TECHNOLOGY CO.,LTD. Country or region before: China |