CN106715953B - Hydraulic bjuffer - Google Patents
Hydraulic bjuffer Download PDFInfo
- Publication number
- CN106715953B CN106715953B CN201580050644.4A CN201580050644A CN106715953B CN 106715953 B CN106715953 B CN 106715953B CN 201580050644 A CN201580050644 A CN 201580050644A CN 106715953 B CN106715953 B CN 106715953B
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- China
- Prior art keywords
- inner cylinder
- end plate
- fitting portion
- outside
- hydraulic bjuffer
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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
- F16F9/3235—Constructional features of cylinders
- F16F9/3242—Constructional features of cylinders of cylinder ends, e.g. caps
-
- 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
- F16F9/10—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
- F16F9/185—Bitubular units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3235—Constructional features of cylinders
- F16F9/3257—Constructional features of cylinders in twin-tube type devices
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Actuator (AREA)
Abstract
A kind of horizontal hydraulic bjuffer of multi-cartridge that can more simply constitute exhaust structure is provided.The air for the upper side corner sections (35) for being trapped in the first liquid chamber (13A) is discharged in the exhaust structure that ground is constituted via access (37), annulus (36), throttle orifice (41) and flow path (40) to liquid storage device (6) together with liquid with acting, is being fitted into the inside fitting portion (31) of end plate (4) in the inside of inner cylinder (3) and blocks the left parts (33) of inner cylinder (3).Thus, the gap of the ring-shaped between the outside fitting portion (32) for being formed in end plate (4) and the outside of inner cylinder (3) can be made to become the annulus (36) of exhaust structure, can more simply constitute exhaust structure.
Description
Technical field
The present invention relates to the horizontal hydraulic bjuffers of multi-cartridge for rail truck etc..
Background technique
For example, the horizontal hydraulic bjuffer of multi-cartridge documented by patent document 1 is configured to make to be trapped in the upper side angle of liquid chamber
The air in portion is discharged via annulus and throttle orifice to the lower part of liquid storage device.
Existing technical literature
Patent document
Patent document 1:(Japan) special open 2009-243634 bulletin
Summary of the invention
The invention technical task to be solved
In the hydraulic bjuffer, due to being fitted into the outside (outer peripheral surface) for having inner cylinder on end plate, it is often necessary to
The outer-diameter accuracy for improving the inner cylinder as general tolerance, that is, need to be machined (finishing) to the periphery of inner cylinder.
Therefore, in view of the foregoing, project is that exhaust structure can more simply be constituted by providing one kind to the present invention
The horizontal hydraulic bjuffer of multi-cartridge.
For solving the technical solution of technical task
In order to solve the above problems, hydraulic bjuffer of the invention is the horizontal hydraulic bjuffer of multi-cartridge, utilizes end plate
Block the outer cylinder of concentric arrangement and the both ends of inner cylinder, and be configured to enclose liquids and gases the outer cylinder and the inner cylinder it
Between cricoid liquid storage device, the inner cylinder one end and the end plate fitting portion formed annulus, make to be trapped in peace
The gas in the corner under dress state as the liquid chamber in the inner cylinder of upper side is produced via the annulus and damping force
Raw throttle orifice is discharged to the liquid storage device, and the end plate, which includes, to be entrenched in the inside fitting portion of the inside of the inner cylinder, is fitted into
Outside fitting portion in the outside of the inner cylinder makes described in the gap-ratio between the outside fitting portion and the outside of the inner cylinder
Gap between inside fitting portion and the inside of the inner cylinder is big and becomes the annulus, in the end plate or the inner cylinder
It is formed with the access for being connected to the upper side corner sections of the liquid chamber in the inner cylinder with the annulus.
The effect of invention
Using the present invention, the exhaust structure of the horizontal hydraulic bjuffer of multi-cartridge can be more simply constituted.
Detailed description of the invention
Fig. 1 is the cross-sectional view for the axial plane for the schematic configuration for illustrating the hydraulic bjuffer of first embodiment.
Fig. 2 is the enlarged view of the main part of Fig. 1.
Fig. 3 is the figure for indicating the variation of first embodiment.
Fig. 4 is the figure for indicating other variations of first embodiment.
Fig. 5 is the enlarged view of the main part of second embodiment.
Specific embodiment
(first embodiment)
Referring to Fig.1, Fig. 2 illustrates first embodiment of the invention.Here, in rail truck car body and bogie it
Between, as buffer is moved left and right, it is configured to the horizontal 1 (hereinafter referred to as " hydraulic cushion of hydraulic bjuffer of approximate horizontal multi-cartridge
Device 1 ") it is illustrated.In addition, in the following description, for convenience, the up and down direction of Fig. 1 and left and right directions are directly defined
For the up and down direction and left and right directions of the hydraulic bjuffer 1 under installation condition.
As shown in Figure 1, hydraulic bjuffer 1 has the outer cylinder 2 and inner cylinder 3 of concentric arrangement, i.e. shared axis.Outer cylinder 2,
The left end of inner cylinder 3 and right end are blocked using end plate 4 and end plate 5.As a result, between outer cylinder 2 and inner cylinder 3, it is formed with annular
The liquid storage device 6 of shape.End plate 5 is divided into the end plate 7 for blocking the right end of outer cylinder 2 and blocks the end plate 8 of the right end of inner cylinder 3 and constitute.
The bracket 9 with the connection of the car body side of rail truck is fixed on end plate 7.End plate 5 passes through the right end side for making to be formed in end plate 8
Axle portion 10 is chimeric with the recess portion 11 of end face of opposite side (left side) relative to bracket 9 of end plate 7, and makes end plate 7 and end plate 8 one
Body.In addition, being formed with interior low combination portion 29 between the periphery of end plate 7 and the right end of outer cylinder 2.
In the inside of inner cylinder 3, piston 12 can be slidably fitted.The inner utilization piston 12 of inner cylinder 3 is divided by left and right
For the first liquid chamber 13A, the second liquid chamber 13B.Movement liquid is sealed in the first liquid chamber 13A and the second liquid chamber 13B.In addition,
Movement liquid, air are sealed in liquid storage device 6.The right end of piston rod 14 is linked on piston 12.The left end side of piston rod 14 is logical
The first liquid chamber 13A and end plate 4 are crossed by extending to the external of inner cylinder 3.It is fixed with and rail truck in the left end of piston rod 14
Bogie side connection bracket 15.The cover of the barrel shape for the piston rod 14 that covering extends from end plate 4 is installed on bracket 15
16。
Contraction side overflow valve 17 is provided on piston 12, contraction side overflow valve 17 in the retraction stroke of piston rod 14,
Prevention acts movement of the liquid from the second liquid chamber 13B to the first liquid chamber 13A, in the hydraulic arrival certain pressure of the second liquid chamber 13B,
Discharge the hydraulic of the second liquid chamber 13B to the first liquid chamber 13A.In addition, being provided with elongate sides overflow valve 18 on piston 12, extend
For side overflow valve 18 in the extended travel of piston rod 14, prevention movement liquid is mobile from the first liquid chamber 13A to the second liquid chamber 13B,
When the hydraulic arrival certain pressure of the first liquid chamber 13A, discharge the hydraulic of the first liquid chamber 13A to the second liquid chamber 13B.Further
Ground, is provided with overflow valve 19 on end plate 8, and overflow valve 19 makes the second liquid chamber 13B according to the hydraulic and valve opening of the second liquid chamber 13B
It is hydraulic to liquid storage device 6 discharge.In addition, being provided with check valve 20 on end plate 8, check valve 20 only allows to act liquid from liquid storage device
6 circulate to the second liquid chamber 13B.
In the first embodiment, end plate 8 is the cast iron member for being generally formed into hat.It is formed in the right end of end plate 8
The axle portion 10.In end plate 8 and axle portion 10 opposite side, it is formed with the outer of the circular ring shape of a part of side wall for constituting end plate 8
Side fitting portion 21.The outer peripheral surface 22A of the chimeric right part 22 for having inner cylinder 3 the inner peripheral surface 21B of fitting portion 21 on the outside.In addition,
The inner peripheral surface 21B of outside fitting portion 21 is formed with the seal groove 23 of ring-shaped, utilizes the seal member for being installed on the seal groove 23
24 will seal between inner cylinder 3 and end plate 8.In addition, the right end (22 end face of right part) of inner cylinder 3 is abutted with the bottom 25 of end plate 8.Separately
Outside, the outer diameter of inner cylinder 3 is formed with general tolerance, the outside fitting portion 21 of end plate 8, inner cylinder 3 right part 22 with predetermined
Chimeric tolerance is chimeric.
On the other hand, in the first embodiment, end plate 4 is to be generally formed into columnar cast iron member.Such as Fig. 2 institute
Show, the end plate fitting portion 28 of the outer peripheral surface 26 of 15 side of bracket (left side) of end plate 4 and the inside for the left part 27 for being formed in outer cylinder 2
It is chimeric.In addition, end plate fitting portion 28 forms the inside of the left part 27 of outer cylinder 2 by machining.In addition, outer cylinder 2, end plate 4
It is chimeric with predetermined chimeric tolerance.In addition it is also possible to constitute end plate 8 and end plate 4 by cast iron member, and becomes and burn
Knot part.
In the right end side of end plate 4, that is, it is embedding that the opposition side of 15 side of bracket is provided with the inside chimeric with the inside of inner cylinder 3
Conjunction portion 31, the outside fitting portion 32 chimeric with the outside of inner cylinder 3.In other words, the front end insertion of the left part 33 of inner cylinder 3 is formed in
The slot 34 of ring-shaped between the inside fitting portion 31 and outside fitting portion 32 of end plate 4.In addition, the outside fitting portion 32 of end plate 4
Extend relative to 31 right direction of inside fitting portion.In this way, the outer peripheral surface 33A of the left part 33 of inner cylinder 3 utilizes outside fitting portion
32 coverings.In addition, the front end of the left part 33 of inner cylinder 3 is abutted with the bottom of the slot 34 of end plate 4.Inner cylinder 3 and end plate 4 exist as a result,
Relative positioning on axis direction (left and right directions).
Also, in the first embodiment, the gap between the outside fitting portion 32 of end plate 4 and the outside of inner cylinder 3, that is,
Gap between the outer peripheral surface 33A of the left part 33 of the inner peripheral surface 32B and inner cylinder 3 of outside fitting portion 32 is set as than end plate 4
Gap between inside fitting portion 31 and the inside of inner cylinder 3, that is, the outer peripheral surface 31A of inside fitting portion 31 and the left part of inner cylinder 3
Gap between 33 inner peripheral surface 33B is big.For example, inside fitting portion 31 is chimeric by transition fit with the inside of inner cylinder 3, outside
Side fitting portion 32 is chimeric by clearance fit with the outside of inner cylinder 3.Thereby, it is possible to make the outer of outside fitting portion 32 and inner cylinder 3
Fitting portion 31 and the gap of the inside of inner cylinder 3 are big on the inside of gap-ratio between side.
In addition, constituting on hydraulic bjuffer 1 has exhaust structure, exhaust structure is for making to be trapped in the first liquid chamber 13A's
Upper 35 air of side corner sections is discharged to liquid storage device 6.In the first embodiment, the outside of the outside fitting portion 32 and inner cylinder 3
Between gap play a role as the annulus 36 of a part for constituting exhaust structure.Exhaust structure includes for making ring-type
The access 37 that access 36 is connected to the upper side corner sections 35 of the first liquid chamber 13A.In the first embodiment, access 37 by
The top of the inside fitting portion 31 of end plate 4 forms notch and is formed.In other words, access 37 passes through in the slot for being formed in end plate 4
34 top (uppermost position in fig-ure) is to the left and downside forms notch and formed.In addition, the right end of annulus 36 passes through sealing
Component 38 divides.In addition, seal member 38 is mounted on the seal groove for being formed in the inner peripheral surface 32B of outside fitting portion 32 of end plate 4
39。
In the first embodiment, exhaust structure includes: by the underside area of the left end of liquid storage device 6, in other words, liquid storage device
The stream that the region of the outer peripheral surface 32A of fitting portion 32 is connected to the lower part (setting lowermost position) of annulus 36 on the outside of 6 encirclement
Road 40.Flow path 40 is formed in the lower part of the outside fitting portion 32 of end plate 4.It is provided in the upper end of flow path 40 to annulus 36
The throttle orifice 41 of lower openings.In this way, exhaust structure keeps the upper side corner sections 35 of the first liquid chamber 13A logical via access 37, ring-type
Road 36, throttle orifice 41 and flow path 40, are connected to the underside area of the left end of liquid storage device 6.Here, corner 35 is preferably upside,
More preferably in the state of being equipped with hydraulic bjuffer 1, positioned at the position of top side.But it is denoted as upside, must be not necessarily
On, such as corner 35 can also be set close to the position of upside than middle position.In this case, the first liquid chamber can be utilized
The pressure venting air of 13A, the second liquid chamber 13B.
In the left part of end plate 4, that is, be embedded in the part and the right part of end plate 4 of the end plate fitting portion 28 of outer cylinder 2, that is,
It is formed between inside fitting portion 31 and the part of outside fitting portion 32, is formed between the inner peripheral surface 2B of outer cylinder 2 with one
The middle part 42 of fixed gap.Middle part 42 passes through the platform for making to be formed between the chimeric part of the end plate fitting portion 28 of outer cylinder 2
Rank portion 43 and the stage portion 44 being formed between the inner peripheral surface 2B of outer cylinder 2 and end plate fitting portion 28 interfere, and are formed as not
The front end of the left part 33 of inner cylinder 3 can be prevented with the bottom of the slot 34 of end plate 4 from abutting.In addition, in end plate 4, in middle part 42
Top (12 points of position when from left and right directions) be formed with notch 45, the notch 45 engaging be formed in outer cylinder 2
Left part 27 caulking part 46.The non-return structure for preventing end plate 4 relative to the relative movement around axis of outer cylinder 2 is formed as a result,
It makes.In addition, constructing as non-return, caulking part 46 can not also be formed, and forms protrusion in the inner circumferential of outer cylinder 2.
Then, illustrate the effect of first embodiment.
When the car body and bogie of rail truck are relatively moved to horizontal direction, the hydraulic bjuffer 1 of landscape configuration
Piston rod 14 is flexible.In the extended travel of piston rod 14, the movement liquid of the first liquid chamber 13A passes through the elongate sides overflow of piston 12
Valve 18 is flowed to the second liquid chamber 13B.Meanwhile first liquid chamber 13A movement liquid via access 37, annulus 36, throttle orifice
41 and flow path 40 to liquid storage device 6 be discharged.In this way, the movement liquid of the first liquid chamber 13A passes through overflow valve 18 and throttle orifice 41, from
And generate the damping force of elongate sides.
In the extended travel of the piston rod 14, it is detained the feelings for having air in the upper side corner sections 35 of the first liquid chamber 13A
Under condition, the air is together with movement liquid via access 37, annulus 36, throttle orifice 41 and flow path 40 to 6 row of liquid storage device
Out.In addition, in the extended travel of piston rod 14, piston rod 14 is from the movement liquid of the first liquid chamber 13A volume exited from storage
Liquid device 6 is imported via the check valve 20 of end plate 8 to the second liquid chamber 13B.
On the other hand, in the retraction stroke of piston rod 14, the movement liquid of the second liquid chamber 13B passes through the contraction side of piston 12
Overflow valve 17 is flowed to the first liquid chamber 13A.Meanwhile piston rod 14 is to the movement liquid of the first liquid chamber 13A volume entered from
Two liquid chamber 13B are discharged via the overflow valve 19 of end plate 8 to liquid storage device 6.In this way, the movement liquid of the second liquid chamber 13B passes through overflow valve
17 and overflow valve 19, to generate the damping force of contraction side.
Using first embodiment, it is connected to annulus 36 with the i.e. upper side corner sections 35 of the uppermost position in fig-ure of the first liquid chamber 13A
And constitute exhaust structure, so even make piston rod 14 with smaller amplitude stretch (vibration) hydraulic bjuffer 1 movement,
Be trapped in the air of the upper side corner sections 35 of the first liquid chamber 13A also can together with movement liquid via access 37, annulus 36,
Throttle orifice 41 and flow path 40 are reliably discharged to liquid storage device 6.In addition, being trapped in the sky of the upper side corner sections 35 of the first liquid chamber 13A
Gas is successfully moved by access 37 to the topmost for the annulus 36 for being located at higher position, therefore can prevent from passing through
Access 37 and reach the top of annulus 36 air return the first liquid chamber 13A.In this way, the input for small amplitude,
It can reliably buffer, can be improved the reliability of the horizontal hydraulic bjuffer 1 of multi-cartridge.
In addition, in the hydraulic bjuffer of conventional art, that is, it is chimeric with the inside of inner cylinder 3 not make end plate 4, and makes end plate 4
Only in the hydraulic bjuffer of left part 33 to block inner cylinder 3 chimeric with the outside of inner cylinder 3, the outer diameter for making inner cylinder 3 is needed to be formed
Outer peripheral surface 3A for the tolerance more tightened up than general tolerance, therefore inner cylinder 3 is machined, it is contemplated that machine-finish allowance, with
It selects material (inner cylinder 3) interaction of wall thickness and becomes the main reason for manufacturing cost increases.
In contrast, in the first embodiment, make the inside fitting portion 31 of end plate 4 chimeric with the inside of inner cylinder 3 and seal
The left part 33 of stifled inner cylinder 3, therefore the tolerance of the outer diameter of inner cylinder 3 keeps general tolerance without severization, therefore for institute
The hydraulic bjuffer of conventional art is stated, manufacturing cost can be cut down.
In addition, in the first embodiment, being fitted into the inside fitting portion 31 of end plate 4 in the inside of inner cylinder 3 and blocking inner cylinder 3
Left part 33, therefore can make to be formed in the outside fitting portion 32 of end plate 4 and the outside (inner circumferential of left part 33 of inner cylinder 3
The gap of ring-shaped between 33B) is used as the annulus 36 of exhaust structure, can more simply constitute exhaust structure.
Further, in the first embodiment, on the notch 45 of the topmost for the middle part 42 for being formed in end plate 4,
Make the side wall for riveting outer cylinder 2 and the caulking part 46 that is formed engages, thus can prevent end plate 4 relative to outer cylinder 2 around axis
Relative movement (rotation) can prevent hydraulic bjuffer 1 from turning upside down configuration, change speech and when being installed to rail truck
It, prevents access 37 and throttle orifice 41 turns upside down configuration.
In addition, first embodiment is without being limited thereto, for example, can constitute as shown below.
In the first embodiment, shape end plate 4 and end plate 8 using cast irons such as die castings, for example, can also pass through
Sintering, shaping by stock removal.
In addition, in the first embodiment, by the way that access 37 is formed in end plate 4, to constitute exhaust structure, for example,
Notch (slit) by making to be formed in the top (uppermost position in fig-ure) of the left end of inner cylinder 3 is used as access 37, and being capable of the row of composition
Gas construction.
In the first embodiment, notch is formed in the inside fitting portion 31 of end plate 4 and form access 37, in other words,
Access 37 is formed while end plate 4 shapes, and the upper side corner sections 35 of the first liquid chamber 13A is made to be connected to and constitute with annulus 36
Exhaust structure, as shown in figure 3, can be by the top drilling of oblique direction formation to the left of the slot 34 towards end plate 4, come the company of being formed
Access 37.
In this case, the topmost of the access 37 (referring to Fig. 3) formed by drilling is located at than being formed using notch
Access 37 (referring to Fig. 2) the high position of topmost, therefore can be more reliably prevented from and ring is reached by access 37
The air on the top of shape access 36 returns to the first liquid chamber 13A.
In the first embodiment, the gap between the outside fitting portion 32 of end plate 4 and the outside of inner cylinder 3, that is, outside is embedding
Gap between the outer peripheral surface 33A of the left part 33 of the inner peripheral surface 32B and inner cylinder 3 in conjunction portion 32 uses and structure as annulus 36
At exhaust structure, but in the case where the application condition of the outer diameter of inner cylinder 3 is big, as shown in figure 4, can be embedding in the outside of end plate 4
The inner peripheral surface 32B in conjunction portion 32 forms auxiliary endless groove 47 to constitute exhaust structure with ensuring flow path.
In this case, it assists the sectional area of endless groove and ensures flow path merely with endless groove and the conventional art that constitutes
The sectional area of the endless groove of exhaust structure is compared, and is capable of forming to be smaller, and end plate 4 (outside fitting portion 32) can be prevented to axis
Line direction (left and right directions) enlargement.
(second embodiment)
Illustrate second embodiment of the present invention referring to Fig. 5.It should be noted that for identical with first embodiment or
Comparable structure marks same name and appended drawing reference, and omits and illustrate.
In this second embodiment, at the end of the left part of inner cylinder 3 33 and the closure left part 33 in first embodiment
The exhaust structure constituted between plate 4 be suitable for inner cylinder 3 right part 22 and block the right part 22 end plate 8 between.
In the left end side of end plate 8, that is, relative to the opposite side of axle portion 10, be provided with the inside chimeric with the inside of inner cylinder 3
Fitting portion 51, the outside fitting portion 52 chimeric with the outside of inner cylinder 3.In other words, the front end of the right part 22 of inner cylinder 3 is inserted into be formed
The slot 54 of ring-shaped between the inside fitting portion 51 and outside fitting portion 52 of end plate 8.In addition, the outside fitting portion of end plate 8
52 extend relative to 51 left direction of inside fitting portion.In this way, the outer peripheral surface 22A of the right part 22 of inner cylinder 3 utilizes outside chimeric
Portion 52 covers.In addition, the front end of the right part 22 of inner cylinder 3 is abutted with the bottom of the slot 54 of end plate 8.Inner cylinder 3 and end plate 8 as a result,
And then make inner cylinder 3 and the relative positioning on axis direction (left and right directions) of outer cylinder 2.
Gap between the outside fitting portion 52 of end plate 8 and the outside of inner cylinder 3, that is, the inner peripheral surface 52B of outside fitting portion 52
Gap between the outer peripheral surface 22A of the right part 22 of inner cylinder 3 is set as in inside fitting portion 51 and inner cylinder 3 than end plate 8
Gap between side, that is, the gap between the inner peripheral surface 22B of the right part 22 of the outer peripheral surface 51A and inner cylinder 3 of inside fitting portion 51
Greatly.For example, inside fitting portion 51 is chimeric by transition fit with the inside of inner cylinder 3, the outside of outside fitting portion 52 and inner cylinder 3
It is chimeric by clearance fit.The gap between outside fitting portion 52 and the outside of inner cylinder 3 can be than inside fitting portion 51 as a result,
It is big with the gap of the inside of inner cylinder 3.
Also, in this second embodiment, the gap between the outside fitting portion 52 and the outside of inner cylinder 3 is as structure
It plays a role at the annulus 56 of a part of exhaust structure.In this second embodiment, exhaust structure includes for making ring
The access 57 that shape access 56 is connected to the upper side corner sections 55 of the second liquid chamber 13B.Access 57 passes through chimeric in the inside of end plate 8
The top in portion 51 forms notch and is formed.In other words, access 57 passes through the top (upper in the slot 54 for being formed in end plate 8
Set) to the right and downside formed notch and formed.In addition, the left end of annulus 56 is divided by seal member 58.In addition,
Seal member 58 is mounted on the seal groove 59 for being formed in the inner peripheral surface 52B of outside fitting portion 52 of end plate 8.
In this second embodiment, exhaust structure includes: the underside area of the right end of liquid storage device 6, in other words, liquid storage device 6
Encirclement on the outside of fitting portion 52 the flow path that is connected to the lower part (setting lowermost position) of annulus 56 of the region of outer peripheral surface 52A
60.Flow path 60 is formed in the lower part of the outside fitting portion 52 of end plate 8.It is provided under annulus 56 in the upper end of flow path 40
The throttle orifice 61 of portion's opening.In this way, exhaust structure makes the upper side corner sections 55 of the second liquid chamber 13B via access 57, annulus
56, throttle orifice 61 and flow path 60, are connected to the underside area of the right end of liquid storage device 6.In addition, seal member 81 is mounted on to be formed
In the seal groove 80 of the inner peripheral surface 52B of outside fitting portion 52.In this way, by setting backup seal, and can be used in the liquid of high pressure
Compression buffer.
Then, illustrate the effect of second embodiment.
When the car body and bogie of rail truck are relatively moved to horizontal direction, the hydraulic bjuffer 1 of landscape configuration
Piston rod 14 is flexible.In the retraction stroke of piston rod 14, the movement liquid of the second liquid chamber 13B passes through the contraction side overflow of piston 12
Valve 17 is flowed to the first liquid chamber 13A.At this point, in the case where the delay of the upper side corner sections 55 of the second liquid chamber 13B has air, the air
It is discharged via access 57, annulus 56, throttle orifice 61 and flow path 60 to liquid storage device 6 together with movement liquid.
Using second embodiment, the effect same with first embodiment can be obtained.
In addition, the exhaust structure of second embodiment can be used in combination with the exhaust structure of first embodiment, certainly, also can
The exhaust structure of second embodiment is used alone enough to constitute hydraulic bjuffer 1.
Description of symbols
1 hydraulic bjuffer
2 outer cylinders
3 inner cylinders
4,5 end plate
6 liquid storage devices
13A, 13B liquid chamber
31 inside fitting portions
32 outside fitting portions
33 left parts (one end of inner cylinder)
Side corner sections on 35
36 annulus
37 access
41 throttle orifices
Claims (5)
1. a kind of hydraulic bjuffer, which is the horizontal hydraulic bjuffer of multi-cartridge, is matched with one heart using end plate closure
The both ends of the outer cylinder and inner cylinder set, and be configured to enclose liquids and gases cricoid between the outer cylinder and the inner cylinder
Liquid storage device, the inner cylinder one end and the end plate fitting portion formed annulus, make be detained in the mounted state at
For the liquid chamber in the inner cylinder of upper side corner gas via the annulus and damping force generation throttle orifice
It being discharged to the liquid storage device, the hydraulic bjuffer is characterized in that,
The outside that the end plate includes and is entrenched in the inside fitting portion of the inside of the inner cylinder, is entrenched in the outside of the inner cylinder
Fitting portion,
Make described in the gap-ratio between the outside fitting portion and the outside of the inner cylinder the interior of inside fitting portion and the inner cylinder
Gap between side is big and becomes the annulus,
It is formed in the end plate or the inner cylinder and is connected to the upper side corner sections of the liquid chamber in the inner cylinder with the annulus
The access to get up.
2. hydraulic bjuffer as described in claim 1, which is characterized in that
The access is formed in the end plate by casting or sintering.
3. hydraulic bjuffer as claimed in claim 1 or 2, which is characterized in that
The access is to be formed in the end plate, and the hole that the axis relative to the inner cylinder is formed slopely.
4. hydraulic bjuffer as claimed in claim 1 or 2, which is characterized in that
The endless groove being connected to the access is formed in the outside fitting portion.
5. hydraulic bjuffer as claimed in claim 3, which is characterized in that
The endless groove being connected to the access is formed in the outside fitting portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014201647 | 2014-09-30 | ||
| JP2014-201647 | 2014-09-30 | ||
| PCT/JP2015/073862 WO2016052008A1 (en) | 2014-09-30 | 2015-08-25 | Hydraulic shock-absorbing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106715953A CN106715953A (en) | 2017-05-24 |
| CN106715953B true CN106715953B (en) | 2019-03-15 |
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| CN201580050644.4A Active CN106715953B (en) | 2014-09-30 | 2015-08-25 | Hydraulic bjuffer |
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| JP (1) | JP6250185B2 (en) |
| CN (1) | CN106715953B (en) |
| GB (1) | GB2544245B (en) |
| WO (1) | WO2016052008A1 (en) |
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| JP7067885B2 (en) * | 2017-09-27 | 2022-05-16 | Ｋｙｂモーターサイクルサスペンション株式会社 | Front fork and manufacturing method of front fork |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793273A (en) * | 2009-01-30 | 2010-08-04 | 日立汽车系统株式会社 | Cylinder assembly |
| CN101857039A (en) * | 2009-04-10 | 2010-10-13 | 萱场工业株式会社 | Linear shock absorber for railway vehicles |
| CN102003428A (en) * | 2009-08-31 | 2011-04-06 | 日立汽车系统株式会社 | Cylinder apparatus |
| CN202326886U (en) * | 2011-11-10 | 2012-07-11 | 浙江森森汽车零部件有限公司 | Self gas exhaust device of dual-drum hydraulic shock absorber |
| CN102606667A (en) * | 2012-04-01 | 2012-07-25 | 常州朗锐凯迩必减振技术有限公司 | Transverse shock absorber for locomotives |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3443582B2 (en) * | 1994-08-23 | 2003-09-02 | カヤバ工業株式会社 | Air release structure in oil damper |
| JP3926479B2 (en) * | 1998-05-29 | 2007-06-06 | カヤバ工業株式会社 | Oil damper |
| JP5126509B2 (en) * | 2008-03-31 | 2013-01-23 | 日立オートモティブシステムズ株式会社 | Hydraulic buffer |
| JP5424166B2 (en) * | 2009-06-26 | 2014-02-26 | 日立オートモティブシステムズ株式会社 | Horizontal cylinder device |
-
2015
- 2015-08-25 WO PCT/JP2015/073862 patent/WO2016052008A1/en active Application Filing
- 2015-08-25 CN CN201580050644.4A patent/CN106715953B/en active Active
- 2015-08-25 GB GB1704079.1A patent/GB2544245B/en active Active
- 2015-08-25 JP JP2016551638A patent/JP6250185B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793273A (en) * | 2009-01-30 | 2010-08-04 | 日立汽车系统株式会社 | Cylinder assembly |
| CN101857039A (en) * | 2009-04-10 | 2010-10-13 | 萱场工业株式会社 | Linear shock absorber for railway vehicles |
| CN102003428A (en) * | 2009-08-31 | 2011-04-06 | 日立汽车系统株式会社 | Cylinder apparatus |
| CN202326886U (en) * | 2011-11-10 | 2012-07-11 | 浙江森森汽车零部件有限公司 | Self gas exhaust device of dual-drum hydraulic shock absorber |
| CN102606667A (en) * | 2012-04-01 | 2012-07-25 | 常州朗锐凯迩必减振技术有限公司 | Transverse shock absorber for locomotives |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2016052008A1 (en) | 2017-04-27 |
| GB2544245B (en) | 2020-06-24 |
| JP6250185B2 (en) | 2017-12-20 |
| GB201704079D0 (en) | 2017-04-26 |
| CN106715953A (en) | 2017-05-24 |
| GB2544245A (en) | 2017-05-10 |
| WO2016052008A1 (en) | 2016-04-07 |
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