CN105546015A - Hydraulic shock absorber and piston assembly - Google Patents
Hydraulic shock absorber and piston assembly Download PDFInfo
- Publication number
- CN105546015A CN105546015A CN201610115072.XA CN201610115072A CN105546015A CN 105546015 A CN105546015 A CN 105546015A CN 201610115072 A CN201610115072 A CN 201610115072A CN 105546015 A CN105546015 A CN 105546015A
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- Prior art keywords
- piston body
- port
- bulge loop
- face
- annulus
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
- F16F9/3405—Throttling passages in or on piston body, e.g. slots
Abstract
The invention discloses a hydraulic shock absorber and a piston assembly. According to the piston assembly, a central hole is formed in a piston body, a first inner ring surrounding the central hole and a first outer ring surrounding the first inner ring are arranged on a first end face of the piston body, and a second inner ring surrounding the central hole and a second outer ring surrounding the second inner ring are arranged on a second end face of the piston body. The piston body is further provided with at least one first throttling pore channel and at least one second throttling pore channel. First ports of the first throttling pore channels are formed in the first inner ring, and second ports of the first throttling pore channels are formed in the second outer ring. First ports of the second throttling pore channel are formed in the first outer ring, and second ports of the second throttling pore channel are formed in the second inner ring. A first opening and closing sheet is arranged on the first end face of the piston body to normally seal the first ports of the first throttling pore channels, and a second opening and closing sheet is arranged on the second end face of the piston body to normally seal the second ports of the second throttling pore channels. According to the piston assembly of the embodiment, the piston assembly has a few parts and is simple and easy to assemble.
Description
Technical field
The present invention relates to a kind of piston assembly and there is the dydraulic shock absorber of this piston assembly.
Background technique
For ensureing that rail vehicle runs on the line safely and smoothly, existing rail vehicle, namely EMU, rolling stock, light rail, subway etc. all extensively adopt dydraulic shock absorber to carry out vibration damping above, its Main Function be reduce vehicle be in operation from wheel to the vibration caused during rail contact and impact, thus improve the travelling comfort of the Security of vehicle operating, stationarity, Economy and passenger.
Dydraulic shock absorber working principle is that the negative work utilizing hydraulic oil viscous resistance to do carrys out absorbing vibrational energy, and its essence is exactly a damping member.When there being dynamic excitation, it plays buffering, absorbs and catabiotic effect, mechanical energy is converted to other forms of energy (such as heat energy) and is dispersed in surrounding environment and goes.Be provided with multiple damping hole and valve mechanism in dydraulic shock absorber, when hydraulic oil flows back and forth in duct, produce frictional damping effect, absorb the vibrational energy of vehicle, thus reach the object of attenuation vibration.
In correlation technique, the piston element of dydraulic shock absorber comprises piston body, piston body is provided with one and above orifice valve, also has one and the above spring matched with orifice valve and adjusting nut.The dydraulic shock absorber of correlation technique, constituent elements is more, structure relative complex, causes efficiency of assembling not high.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.
For this reason, one object of the present invention is to propose that a kind of constituent elements is less, structure simple, is convenient to the piston assembly that assembles.
Another object of the present invention is to propose a kind of dydraulic shock absorber with above-mentioned piston assembly.
According to the piston assembly of the embodiment of the present invention, comprise: piston body, described piston body has the center hole of the through described piston body of axis along described piston body, first end face of described piston body has around described center hole the first port first in annulus and the first outer toroid around annulus in described first, second end face of described piston body has around described center hole the second port second in annulus and the second outer toroid around annulus in described second, described piston body also has at least one first throttle duct and at least one second section discharge orifice road, first port in first throttle duct described at least one is positioned at described first annulus and described at least one, second port in first throttle duct is positioned at described second outer toroid, first port in second section discharge orifice road described at least one is positioned at described first outer toroid and described at least one, second port in second section discharge orifice road is positioned at described second annulus, for often closing the first opening and closing sheet of first port in first throttle duct described at least one, described first opening and closing sheet is located on the first end face of described piston body, for often closing the second opening and closing sheet of second port in second section discharge orifice road described at least one, described second opening and closing sheet is located on the second end face of described piston body.
According to the piston assembly of the embodiment of the present invention, constituent elements is less, structure is simple, be convenient to assembling.The dydraulic shock absorber of the piston assembly according to the embodiment of the present invention is installed, when piston assembly by piston body first end facing to piston body second end face move time, the hydraulic oil being in the second end face side of piston body enters from second port in first throttle duct, wash the first opening and closing sheet open to open to make first port in first throttle duct, finally enter into the first end face side of piston body, meanwhile, the hydraulic oil of the second end face side of piston body also can make the second opening and closing sheet close second port in second section discharge orifice road more reliably; When piston assembly by piston body the second end face towards piston body first end face move time, the hydraulic oil being in the first end face side of piston body enters from first port in second section discharge orifice road, wash the second opening and closing sheet open to open to make second port in second section discharge orifice road, finally enter into the second end face side of piston body, meanwhile, the hydraulic oil of the first end face side of piston body also can make the first opening and closing sheet close first port in first throttle duct more reliably.
In addition, piston assembly according to the above embodiment of the present invention can also have following additional technical characteristics:
Advantageously, in described first, in annulus and described second, annulus is arranged symmetrically with on described piston body, and described first outer toroid and described second outer toroid are arranged symmetrically with on described piston body.
Advantageously, the 3rd bulge loop of the first bulge loop between the inner edge the first end face of described piston body also with annulus in the outer rim and described first of the first port of described center hole, the second bulge loop in described first between the outer rim of annulus and the inner edge of described first outer toroid and the outer rim around described first outer toroid; 6th bulge loop of the 4th bulge loop between the inner edge the second end face of described piston body also with annulus in the outer rim and described second of the second port of described center hole, the 5th bulge loop in described second between the outer rim of annulus and the inner edge of described second outer toroid and the outer rim around described second outer toroid.
Advantageously, described first bulge loop and described 4th bulge loop are arranged symmetrically with on described piston body, and described second bulge loop and described 5th bulge loop are arranged symmetrically with on described piston body, and described 3rd bulge loop and described 6th bulge loop are arranged symmetrically with on described piston body.
Advantageously, the height of described first bulge loop lower than the height of described second bulge loop and the height of described second bulge loop lower than the height of described 3rd bulge loop, the height of described 4th bulge loop lower than the height of described 5th bulge loop and the height of described 5th bulge loop lower than the height of described 6th bulge loop.
Advantageously, the shape in first throttle duct described at least one is identical with the shape in second section discharge orifice road described at least one, the shape of first port in first throttle duct described at least one is identical with the shape of second port in second section discharge orifice road described at least one, and the shape of second port in first throttle duct described at least one is identical with the shape of first port in second section discharge orifice road described at least one.
Advantageously, the radial dimension of the first port on the first end face of described piston body in first throttle duct described at least one is greater than the radial dimension of the second port on the second end face of described piston body in first throttle duct described at least one, and the circumferential size of the first port on the first end face of described piston body in first throttle duct described at least one is less than the circumferential size of the second port on the second end face of described piston body in first throttle duct described at least one; The radial dimension of the first port on the first end face of described piston body in second section discharge orifice road described at least one is less than the radial dimension of the second port on the second end face of described piston body in second section discharge orifice road described at least one, and the circumferential size of the first port on the first end face of described piston body in second section discharge orifice road described at least one is greater than the circumferential size of the second port on the second end face of described piston body in second section discharge orifice road described at least one.
Advantageously, the quantity in described first throttle duct and the quantity in described second section discharge orifice road are three, wherein, described in the first end opening's edge in three described first throttle ducts, the circumferential uniform intervals of annulus is arranged in first, second port in three described first throttle ducts is arranged along the circumferential uniform intervals of described second outer toroid, the circumferential uniform intervals of the first outer toroid described in the first end opening's edge in three described second section discharge orifice roads is arranged, second port in three described second section discharge orifice roads is arranged along the circumferential uniform intervals of annulus in described second.
Advantageously, described piston assembly also comprises the first backup plate and the second backup plate, described first backup plate is connected the first end face making described first opening and closing sheet against described piston body with described first opening and closing sheet, described second backup plate is connected the second end face making described second opening and closing sheet against described piston body with described second opening and closing sheet.
According to the dydraulic shock absorber of the embodiment of the present invention, comprise the piston assembly described in above-mentioned any one.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of dydraulic shock absorber according to an embodiment of the invention;
Fig. 2 is the close-up schematic view of A in Fig. 1;
Fig. 3 is the schematic diagram of the piston body of dydraulic shock absorber according to an embodiment of the invention;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is the right elevation of Fig. 3.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
Below with reference to the accompanying drawings the piston assembly according to the embodiment of the present invention is described in detail.
As shown in Figures 1 to 5, according to the piston assembly of the embodiment of the present invention, comprising: piston body 100, the first opening and closing sheet 200 and the 3rd opening and closing sheet 300.
Specifically, piston body 100 has the center hole 101 of axis (namely indicated about arrow as shown in Figure 3 direction) the through piston body 100 along piston body 100.
As shown in Figure 4, the first end face of piston body 100 has around center hole 101 the first port 1011 (i.e. the left port of center hole 101 as shown in Figure 3) first in annulus 102 and the first outer toroid 103 around annulus 102 in first.
As shown in Figure 5, the second end face of piston body 100 has around center hole 101 the second port one 012 (i.e. the right output port of center hole 101 as shown in Figure 3) second in annulus 104 and the second outer toroid 105 around annulus 104 in second.
Piston body 100 also has at least one first throttle duct 106 and at least one second section discharge orifice road 107.First port 1061 (i.e. the left port in first throttle duct 106 as shown in Figure 3) at least one first throttle duct 106 is positioned at the first annulus 102 and second port one 062 (i.e. the right output port in first throttle duct 106 as shown in Figure 3) at least one first throttle duct 106 is positioned at the second outer toroid 105.First port 1071 at least one second section discharge orifice road 107 is positioned at the first outer toroid 103 and second port one 072 at least one second section discharge orifice road 107 is positioned at the second annulus 104.
For often closing first port 1061 at least one first throttle duct 106 on the first end face that first opening and closing sheet 200 is located at piston body 100.
For often closing second port one 072 at least one second section discharge orifice road 107 on the second end face that second opening and closing sheet 300 is located at piston body 100.
According to the piston assembly of the embodiment of the present invention, constituent elements is less, structure is simple, be convenient to assembling.
According to a concrete example of the present invention, in first, in annulus 102 and second, annulus 104 is arranged symmetrically with (as shown in Figure 3, in annulus 102 and second, annulus 104 is symmetrically arranged on piston body 100 in first) on piston body 100.First outer toroid 103 and the second outer toroid 105 are arranged symmetrically with on piston body 100 (as shown in Figure 3, the first outer toroid 103 and the second outer toroid 105 are arranged symmetrically with on piston body 100).
Advantageously, the shape at least one first throttle duct 106 is identical with the shape at least one second section discharge orifice road 107.The shape of first port 1061 at least one first throttle duct 106 is identical with the shape of second port one 072 at least one second section discharge orifice road 107.The shape of second port one 062 at least one first throttle duct 106 is identical with the shape of first port 1071 at least one second section discharge orifice road 107.Thus, the orifice size of piston body both sides can be made identical, and then it is equal with recuperability to realize dydraulic shock absorber compressive force operationally.
Further, the quantity in first throttle duct 106 and the quantity in second section discharge orifice road 107 are three.Wherein, first port 1061 in three first throttle ducts 106 is arranged along the circumferential uniform intervals of annulus in first 102, and second port one 062 in three first throttle ducts 106 is arranged along the circumferential uniform intervals of the second outer toroid 105.First port 1071 in three second section discharge orifice roads 107 is arranged along the circumferential uniform intervals of the first outer toroid 103, and second port one 072 in three second section discharge orifice roads 107 is arranged along the circumferential uniform intervals of annulus in second 104.Thus, dydraulic shock absorber compressive force operationally can be realized further equal with recuperability.
According to some embodiments of the present invention, the radial dimension of the first port 1061 on the first end face of piston body 100 at least one first throttle duct 106 is greater than the radial dimension of the second port one 062 on the second end face of piston body 100 at least one first throttle duct 106, and the circumferential size of the first port 1061 on the first end face of piston body 100 at least one first throttle duct 106 is less than the circumferential size of the second port one 062 on the second end face of piston body 100 at least one first throttle duct 106.The radial dimension of the first port 1071 on the first end face of piston body 100 at least one second section discharge orifice road 107 is less than the radial dimension of the second port one 072 on the second end face of piston body 100 at least one second section discharge orifice road 107, and the circumferential size of the first port 1071 on the first end face of piston body 100 at least one second section discharge orifice road 107 is greater than the circumferential size of the second port one 072 on the second end face of piston body 100 at least one second section discharge orifice road 107.
Further illustrate for first throttle duct 106 below.As shown in Figure 4, on the first end face of piston body 100, first port 1061 in first throttle duct 106 is general rectangular; As shown in Figure 5, second port one 062 in first throttle duct 106 is also general rectangular.
So, above-mentioned " radial dimension " should be understood to rectangular width dimensions, and above-mentioned " circumferential size " should be understood to rectangular length dimension.Can be clear that from Fig. 4 and Fig. 5, the width of first port 1061 in first throttle duct 106 is greater than the width of second port one 062 in first throttle duct 106, and the length of first port 1061 in first throttle duct 106 is less than the length of second port one 062 in first throttle duct 106.The structure in second section discharge orifice road 107 is identical with the structure in first throttle duct 106, repeats no more here.Thus, piston body structure can be made novel,
As shown in Figures 3 to 5, according to a specific embodiment of the present invention, the 3rd bulge loop 110 of the first bulge loop 108 between the inner edge the first end face of piston body 100 also with annulus 102 in the outer rim and first of the first port 1011 of center hole 101, the second bulge loop 109 in first between the outer rim of annulus 102 and the inner edge of the first outer toroid 103 and the outer rim around the first outer toroid 103.6th bulge loop 113 of the 4th bulge loop 111 between the inner edge the second end face of piston body 100 also with annulus 104 in the outer rim and second of the second port one 012 of center hole 101, the 5th bulge loop 112 in second between the outer rim of annulus 104 and the inner edge of the second outer toroid 105 and the outer rim around the second outer toroid 105.
Advantageously, the first bulge loop 108 and the 4th bulge loop 111 are arranged symmetrically with (as shown in Figure 3, the first bulge loop 108 and the 4th bulge loop 111 are symmetrically arranged on piston body 100) on piston body 100.Second bulge loop 109 and the 5th bulge loop 112 are arranged symmetrically with on piston body 100 (as shown in Figure 3, the second bulge loop 109 and the 5th bulge loop 112 are symmetrically arranged on piston body 100).3rd bulge loop 110 and the 6th bulge loop 113 are arranged symmetrically with on piston body 100 (as shown in Figure 3, the 3rd bulge loop 110 and the 6th bulge loop 113 are symmetrically arranged on piston body 100).
Further, the height of the first bulge loop 108 lower than the height of the second bulge loop 109 and the height of the second bulge loop 109 lower than the height of the 3rd bulge loop 110.As shown in Figure 3, with the first end face of piston body 100 for benchmark, the height that the left surface of the first bulge loop 108 to the distance of the first end face of piston body 100 is the height of the first bulge loop 108, the left surface of the second bulge loop 109 to the distance of the first end face of piston body 100 is the height of the second bulge loop 109, the left surface of the 3rd bulge loop 110 to the distance of the first end face of piston body 100 is the 3rd bulge loop 110.
The height of the 4th bulge loop 111 lower than the height of the 5th bulge loop 112 and the height of the 5th bulge loop 112 lower than the height of the 6th bulge loop 113.As shown in Figure 3, with the second end face of piston body 100 for benchmark, the height that the right surface of the 4th bulge loop 111 to the distance of the second end face of piston body 100 is the height of the 4th bulge loop 111, the right surface of the 5th bulge loop 112 to the distance of the second end face of piston body 100 is the height of the 5th bulge loop 112, the right surface of the 6th bulge loop 113 to the distance of the second end face of piston body 100 is the 6th bulge loop 113.
In other words, the first bulge loop 108, second bulge loop 109 and the 3rd bulge loop 110 form step on the first end face of piston body 100, with the first port 1061 making the first opening and closing sheet 200 often can close first throttle duct 106 better; 4th bulge loop 111, the 5th bulge loop 112 and the 6th bulge loop 113 form step on the second end face of piston body 100, with the second port one 072 making the second opening and closing sheet 300 often can close second section discharge orifice road 107 better.
Advantageously, as shown in Figure 2, described piston assembly also comprises the first backup plate 400 and the second backup plate 500.First backup plate 400 is connected the first end face making the first opening and closing sheet 200 against piston body 100 with the first opening and closing sheet 200.Second backup plate 500 is connected the second end face making the second opening and closing sheet 300 against piston body 100 with the second opening and closing sheet 300.
According to the dydraulic shock absorber of the embodiment of the present invention, comprise the piston assembly described in above-mentioned any one.
Specifically, piston cylinder 600 and piston rod 700 is comprised according to the dydraulic shock absorber of the embodiment of the present invention.The left end of piston rod 700 is connected with piston cylinder 600, is located at the right-hand member of piston rod 700 according to the piston assembly of the embodiment of the present invention.
More specifically, as depicted in figs. 1 and 2, first, the first backup plate 400, first opening and closing sheet 200, piston body 100, second opening and closing sheet 300 and the second backup plate 500 are through successively the right-hand member of piston rod 700, are then fixed with nut 800.
In other words, be full of hydraulic oil in piston cylinder 600, the piston rod 700 with piston assembly inserts in piston cylinder 600, and piston cylinder 600 is divided into two-part space by piston assembly.Piston body 100 there are first throttle duct 106 and second section discharge orifice to 107, the hydraulic oil in two-part space separated by piston assembly can be complemented each other.Damping the sticking hydraulic oil of tool by when first throttle duct 106 or second section discharge orifice road 107 produce, and due to the circulation area of piston body both sides equal, the compressive force that dydraulic shock absorber is operationally produced can be made identical with recuperability.
Be provided with according to the dydraulic shock absorber of the piston assembly of the embodiment of the present invention operationally, when piston assembly by piston body first end facing to piston body second end face move time (motion from left to right as shown in Figure 3), the hydraulic oil being in the second end face side of piston body enters from second port in first throttle duct, wash the first opening and closing sheet open to open to make first port in first throttle duct, finally enter into the first end face side of piston body, simultaneously, the hydraulic oil of the second end face side of piston body also can make the second opening and closing sheet close second port in second section discharge orifice road more reliably.When piston assembly is moved towards the first end face of piston body by the second end face of piston body (right-to-left move) as shown in Figure 3, the hydraulic oil being in the first end face side of piston body enters from first port in second section discharge orifice road, wash the second opening and closing sheet open to open to make second port in second section discharge orifice road, finally enter into the second end face side of piston body, meanwhile, the hydraulic oil of the first end face side of piston body also can make the first opening and closing sheet close first port in first throttle duct more reliably.
According to the piston assembly of the embodiment of the present invention, preparation process is simple, and assembly process is succinct, and precision is high, and cost is low, and manufacturing efficiency is high; Can meet bullet train and city railway vehicle to the characteristic requirements of vibration damper, good damping result, in vehicle operation, its property retention is highly stable, long service life.This product meets the job requirement of modern railway vehicle to vibration damper, can reach good ideal effect during work, and damping regulates simple, convenient.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (10)
1. a piston assembly, is characterized in that, comprising:
Piston body, described piston body has the center hole of the through described piston body of axis along described piston body, first end face of described piston body has around described center hole the first port first in annulus and the first outer toroid around annulus in described first, second end face of described piston body has around described center hole the second port second in annulus and the second outer toroid around annulus in described second, described piston body also has at least one first throttle duct and at least one second section discharge orifice road, first port in first throttle duct described at least one is positioned at described first annulus and described at least one, second port in first throttle duct is positioned at described second outer toroid, first port in second section discharge orifice road described at least one is positioned at described first outer toroid and described at least one, second port in second section discharge orifice road is positioned at described second annulus,
For often closing the first opening and closing sheet of first port in first throttle duct described at least one, described first opening and closing sheet is located on the first end face of described piston body;
For often closing the second opening and closing sheet of second port in second section discharge orifice road described at least one, described second opening and closing sheet is located on the second end face of described piston body.
2. piston assembly according to claim 1, is characterized in that, in described first, in annulus and described second, annulus is arranged symmetrically with on described piston body, and described first outer toroid and described second outer toroid are arranged symmetrically with on described piston body.
3. piston assembly according to claim 1 and 2, it is characterized in that, the 3rd bulge loop of the first bulge loop between the inner edge the first end face of described piston body also with annulus in the outer rim and described first of the first port of described center hole, the second bulge loop in described first between the outer rim of annulus and the inner edge of described first outer toroid and the outer rim around described first outer toroid; 6th bulge loop of the 4th bulge loop between the inner edge the second end face of described piston body also with annulus in the outer rim and described second of the second port of described center hole, the 5th bulge loop in described second between the outer rim of annulus and the inner edge of described second outer toroid and the outer rim around described second outer toroid.
4. piston assembly according to claim 3, it is characterized in that, described first bulge loop and described 4th bulge loop are arranged symmetrically with on described piston body, described second bulge loop and described 5th bulge loop are arranged symmetrically with on described piston body, and described 3rd bulge loop and described 6th bulge loop are arranged symmetrically with on described piston body.
5. piston assembly according to claim 3, it is characterized in that, the height of described first bulge loop lower than the height of described second bulge loop and the height of described second bulge loop lower than the height of described 3rd bulge loop, the height of described 4th bulge loop lower than the height of described 5th bulge loop and the height of described 5th bulge loop lower than the height of described 6th bulge loop.
6. piston assembly according to claim 1, it is characterized in that, the shape in first throttle duct described at least one is identical with the shape in second section discharge orifice road described at least one, the shape of first port in first throttle duct described at least one is identical with the shape of second port in second section discharge orifice road described at least one, and the shape of second port in first throttle duct described at least one is identical with the shape of first port in second section discharge orifice road described at least one.
7. piston assembly according to claim 6, it is characterized in that, the radial dimension of the first port on the first end face of described piston body in first throttle duct described at least one is greater than the radial dimension of the second port on the second end face of described piston body in first throttle duct described at least one, and the circumferential size of the first port on the first end face of described piston body in first throttle duct described at least one is less than the circumferential size of the second port on the second end face of described piston body in first throttle duct described at least one; The radial dimension of the first port on the first end face of described piston body in second section discharge orifice road described at least one is less than the radial dimension of the second port on the second end face of described piston body in second section discharge orifice road described at least one, and the circumferential size of the first port on the first end face of described piston body in second section discharge orifice road described at least one is greater than the circumferential size of the second port on the second end face of described piston body in second section discharge orifice road described at least one.
8. the piston assembly according to claim 1 or 6 or 7, it is characterized in that, the quantity in described first throttle duct and the quantity in described second section discharge orifice road are three, wherein, described in the first end opening's edge in three described first throttle ducts, the circumferential uniform intervals of annulus is arranged in first, second port in three described first throttle ducts is arranged along the circumferential uniform intervals of described second outer toroid, the circumferential uniform intervals of the first outer toroid described in the first end opening's edge in three described second section discharge orifice roads is arranged, second port in three described second section discharge orifice roads is arranged along the circumferential uniform intervals of annulus in described second.
9. piston assembly according to claim 1, it is characterized in that, also comprise the first backup plate and the second backup plate, described first backup plate is connected the first end face making described first opening and closing sheet against described piston body with described first opening and closing sheet, described second backup plate is connected the second end face making described second opening and closing sheet against described piston body with described second opening and closing sheet.
10. a dydraulic shock absorber, is characterized in that, comprises the piston assembly according to any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610115072.XA CN105546015B (en) | 2016-03-01 | 2016-03-01 | Hydraulic buffer and piston component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610115072.XA CN105546015B (en) | 2016-03-01 | 2016-03-01 | Hydraulic buffer and piston component |
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| CN105546015A true CN105546015A (en) | 2016-05-04 |
| CN105546015B CN105546015B (en) | 2017-12-26 |
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| CN201610115072.XA Expired - Fee Related CN105546015B (en) | 2016-03-01 | 2016-03-01 | Hydraulic buffer and piston component |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481721A (en) * | 2016-12-08 | 2017-03-08 | 山东凌博瑞轨道交通科技有限公司 | Shock absorber piston assembly and hydraulic damper |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1089398A (en) * | 1996-09-13 | 1998-04-07 | Showa:Kk | Hydraulic damper |
| CN201225378Y (en) * | 2008-07-10 | 2009-04-22 | 邬赛尧 | Piston |
| CN201714896U (en) * | 2010-06-25 | 2011-01-19 | 南阳淅减汽车减振器有限公司 | Piston valve of vibration absorber of rail vehicle |
| CN102392870A (en) * | 2011-06-24 | 2012-03-28 | 浙江正裕工业有限公司 | Double-cylinder absorber |
| CN203009685U (en) * | 2013-01-05 | 2013-06-19 | 宁波拓发汽车零部件有限公司 | Piston of shock absorber |
| CN205401574U (en) * | 2016-03-01 | 2016-07-27 | 山东凌博瑞轨道交通科技有限公司 | Hydraulic damper and piston assembly |
-
2016
- 2016-03-01 CN CN201610115072.XA patent/CN105546015B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1089398A (en) * | 1996-09-13 | 1998-04-07 | Showa:Kk | Hydraulic damper |
| CN201225378Y (en) * | 2008-07-10 | 2009-04-22 | 邬赛尧 | Piston |
| CN201714896U (en) * | 2010-06-25 | 2011-01-19 | 南阳淅减汽车减振器有限公司 | Piston valve of vibration absorber of rail vehicle |
| CN102392870A (en) * | 2011-06-24 | 2012-03-28 | 浙江正裕工业有限公司 | Double-cylinder absorber |
| CN203009685U (en) * | 2013-01-05 | 2013-06-19 | 宁波拓发汽车零部件有限公司 | Piston of shock absorber |
| CN205401574U (en) * | 2016-03-01 | 2016-07-27 | 山东凌博瑞轨道交通科技有限公司 | Hydraulic damper and piston assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481721A (en) * | 2016-12-08 | 2017-03-08 | 山东凌博瑞轨道交通科技有限公司 | Shock absorber piston assembly and hydraulic damper |
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| CN105546015B (en) | 2017-12-26 |
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