CN105240442B - Oil damper - Google Patents
Oil damper Download PDFInfo
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- CN105240442B CN105240442B CN201510735321.0A CN201510735321A CN105240442B CN 105240442 B CN105240442 B CN 105240442B CN 201510735321 A CN201510735321 A CN 201510735321A CN 105240442 B CN105240442 B CN 105240442B
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Abstract
The invention discloses an oil damper. The oil damper comprises an oil storage cylinder, a piston assembly, a work oil cylinder, a bottom valve assembly, a guide assembly and a gland. The oil storage cylinder comprises an outer cylinder body barrel and a base. An oil storage cavity is formed between the work oil cylinder and the outer cylinder body barrel. The guide assembly is arranged at the rear end of the work oil cylinder. The end, away from a piston, of a piston rod of the piston assembly penetrates out of the guide assembly and the gland outwards, and the piston divides the work oil cylinder into a first cavity and a second cavity. The base is provided with a compressing damping regulation valve, the inlet of the compressing damping regulation valve is communicated with the first cavity, and the outlet of the compressing damping regulation valve is communicated with the oil storage cavity. The guide assembly is provided with a stretching check valve and a stretching damping regulation valve, the inlet of the stretching check valve is communicated with the oil storage cavity, the outlet of the stretching check valve is communicated with the second cavity, the inlet of the stretching damping regulation valve is communicated with the second cavity, and the outlet of the stretching damping regulation valve is communicated with the oil storage cavity. The bottom valve assembly is provided with a one-way check valve. The oil damper has the advantages that the stretching and compressing damping force can be symmetric or asymmetric, can be independently adjusted and can be externally adjusted.
Description
Technical field
The present invention relates to rail vehicles antivibration area, more particularly to a kind of oil-pressure damper.
Background technology
Rail vehicles oil-pressure damper is the track traffics such as EMUs, electric locomotive, diesel locomotive, subway train dress
Standby critical component, its effect is to slow down rolling stock vibration in the process of moving, it is ensured that rolling stock driving safety, is improved
Comfortability of Train.
The internal structure of oil-pressure damper is generally divided into fluid one-way circulation structure and fluid bidirectional circulating structure, single cycle
Structural vibration reduction utensil has symmetrical stretching, compression damping characteristic, and symmetry to be changed by damping regulating valve, the knot
The damping regulating valve of structure is designed at guidance assembling, need not take the internal structure of shock absorber during regulation apart, the structural vibration reduction device
The characteristics of it is easy to adjust for damping characteristic, but its symmetry characteristic can not be changed, be suitable only for the shock absorber with symmetry characteristic.Oil
The stretching of liquid bidirectional circulating structural vibration reduction device, compression damping characteristic separately can individually be adjusted, and damping regulating valve is commonly designed
The inside of shock absorber, when adjusting its damping characteristic to the shock absorber to having assembled, need to take shock absorber apart just can be carried out, the knot
The characteristics of structure shock absorber is that damping characteristic adjusts inconvenience, but the requirement of achievable asymmetric damping characteristics, stretching, compression damping
Power can respectively be adjusted control.
Chinese patent literature CN200920261422.9（Title " rail locomotive and vehicle oil-pressure damper ") disclose
A kind of oil-pressure damper structure.The shock absorber is fluid single cycle structure, there is oil through, piston end surface and tailpiece of the piston rod on piston
Check valve sheet is provided between face, fluid will flow through guidance and then by metal oil guide pipe pilot flow direction when piston rod stretching, compression
The orifice valve being placed on base, it is also possible to realize investigation mission outside the city or town, but the structure has been doomed to realize that stretching, compression damping power are symmetrical
Characteristic, stretching, compression damping power can not separately transfer to other localities, therefore when to transfer to other localities asymmetric damping characteristics and stretching, compression damping power
Outer timing need to be separated can be restricted, and the another structure is more complicated, metal oil guide pipe one end connection guidance other end connect base, and two
End junction is sealed with O-ring, cumbersome during assembling, when the hydraulic oil discharged from oil cylinder flows through the two of metal oil guide pipe
Leakage is easily caused during the junction of end.
The content of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, there is provided a kind of simple structure, stretching damping
Power and compression damping power can separate regulation, solve the oil-pressure damper of stretching and compression damping power asymmetry problem.
To solve above-mentioned technical problem, the present invention is employed the following technical solutions：
A kind of oil-pressure damper, including oil storage cylinder, piston component, operating cylinder, bottom valve assembly, guidance component and gland,
The oil storage cylinder includes cylinder body outer tube and is fixed on the base of cylinder body outer cylinder front end, and the operating cylinder is located in cylinder body outer tube,
And shoe cream room is formed between cylinder body outer tube, the bottom valve assembly is covered on the front end of the operating cylinder and supports with the base
Connect, located at the rear end of the operating cylinder, the gland is located at the rear end of cylinder body outer tube, the piston component for the guidance component
Including piston and piston rod in the operating cylinder, the piston rod away from piston one end through guidance component and gland to
Outward, operating cylinder is divided into first chamber and second chamber by the piston, and the base is provided with compression damping regulating valve, described
Bottom valve assembly is provided with axially extending bore, the import of the compression damping regulating valve connect with axially extending bore and first chamber successively and
Outlet is connected with shoe cream room, and the guidance component is provided with stretching check-valves and stretching damping regulating valve, the stretching check-valves
Import connect with shoe cream room and export and connect with second chamber, the import of the stretching damping regulating valve is connected with second chamber
And outlet connect with shoe cream room, unidirectionally stopping of allowing fluid to flow from shoe cream room to first chamber is additionally provided with the bottom valve assembly
Return valve.
As the further improvement of above-mentioned technical proposal：
The piston is in closed design, i.e., can lead to without oil circuit on described piston, the inwall of the piston and operating cylinder
Between be provided with piston seal, be provided with black box between the piston rod and guidance component.
Oil guide pipe corresponding with the stretching check-valves and stretching damping regulating valve, the stretching are provided with the shoe cream room
The import of check-valves is connected by oil guide pipe with shoe cream room, and the stretching damping is adjusted valve outlet port and connected with shoe cream room by oil guide pipe
It is logical.
The base peripheral surface is provided with installing blind, and the compression damping regulating valve is installed on the installing blind
It is interior, the adjustment portion of the compression damping regulating valve towards outside installing blind, on the guidance component near gland one end end face
It is provided with the first installing hole for installing stretching check-valves and the second installing hole for installing stretching damping regulating valve, the drawing
The adjustment portion of check-valves is stretched towards outside the first installing hole, the adjustment portion of the stretching damping regulating valve is towards outside the second installing hole.
The compression damping regulating valve includes compression damping end cap and the compression damping being sequentially arranged in the installing blind
Valve body, compression damping valve element, compression damping spring, compression damping regulating nut, the compression damping valve element is against the compression
The outlet of damping regulating valve, the compression damping spring is supported and is located between compression damping valve element and compression damping regulating nut, institute
State compression damping regulating nut to be connected with installing blind inner thread, the compression damping end cap is covered on compression damping and adjusts spiral shell
On cap, the adjustment portion of the compression damping regulating valve is the compression damping regulating nut.
The base is provided with the axial center hole coaxial with the axially extending bore, the installation near the end face of bottom valve assembly
Blind hole is vertical with the axial center hole and is connected with axially extending bore by axial center hole, and the installing blind is set to two,
It is mutually perpendicular to and connects, each installing blind is provided with one group of compression damping regulating valve, compression resistance in two groups of compression damping regulating valves
Buddhist nun's valve body, compression damping valve element are different with the design parameter of compression damping spring.
The foot valve seat that the bottom valve assembly includes screw plug and is sheathed on outside screw plug and coordinates with screw plug screw thread, the screw plug is remote
Foot valve seat is stretched out from one end of base, the axially extending bore is located on screw plug, and the foot valve seat is towards oil return on the end face of piston
Through hole, the shoe cream room is connected by oil return through-hole with first chamber, and the one way stop peturn valve includes nonreturn valve core and circular cone bullet
Spring, the nonreturn valve core covers the oil return through-hole, and the taper spring is supported and is located between nonreturn valve core and the nut of screw plug.
The stretching check-valves includes stretching check valve body, the stretching check-valves being sequentially arranged in first installing hole
Core, stretching check spring and stretching non-return regulating nut, the stretching non-return valve core is against the outlet for stretching check-valves, institute
State stretching check spring support located at stretching non-return valve core and stretching non-return regulating nut between, it is described stretching non-return regulating nut with
First installing hole inner thread connects, and the adjustment portion of the stretching check-valves is the stretching non-return regulating nut.
The stretching damping regulating valve includes stretching damping valve body, the stretching damping being sequentially arranged in second installing hole
Valve element, stretching damping spring and stretching damping regulating nut, the stretching damps valve element against the stretching damping regulating valve
Outlet, the stretching damping spring is supported between stretching damping valve element and stretching damping regulating nut, and the stretching damping is adjusted
Section nut is connected with the second installing hole inner thread, and the adjustment portion of the stretching damping regulating valve adjusts spiral shell for the stretching damping
Cap.
The stretching check-valves and stretching damping regulating valve are respectively set to two groups, and in two groups of stretching check-valves non-return is stretched
Valve body, stretching non-return valve core are identical with the design parameter of stretching check spring, and in two groups of stretching damping regulating valves orifice valve is stretched
Body, stretching damping valve element are different with the design parameter of stretching damping spring.
Compared with prior art, it is an advantage of the current invention that：
（1）The oil-pressure damper of the present invention, guidance component is provided with stretching damping regulating valve and stretching check-valves, on base
Compression damping regulating valve is set, and stretching damping regulating valve is used to adjust stretching travel damping force, and compression damping regulating valve is used to adjust
Section compression travel damping force, stretching check-valves is used to stretch closure of check ring when stretching travel, and non-return is stretched during compression travel
Valve is opened with repairing, and the present invention is capable of achieving stretching damping force and compression damping power separate regulation, solves stretching, compression damping power not
Symmetrical problem, stretching, compression damping power can separate individually regulation control, can meet the requirement of all types of shock absorbers of railway,
Also the manufacturing cost of shock absorber can be reduced.
（2）The oil-pressure damper of the present invention, stretching damping regulating valve, the adjustment portion of compression damping regulating valve are arranged on structure
Outside, can easily realize carrying out the regulation of damping force in the outside of damper structure, improve shock absorber and once assemble
Qualification rate, reduces rework rate, has not only reduced labour intensity but also has saved man-hour, cost.
（3）The oil-pressure damper of the present invention, by the way that two groups of stretchings are damped with regulating valves and compression damping regulating valve suitably
It is applied in combination, is capable of achieving the damping force characteristic of various various combinations when stretching, compression.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is enlarged drawing at the A of Fig. 1.
Fig. 3 is the structural representation of base in the present invention.
Fig. 4 is the B-B views of Fig. 3.
Fig. 5 is the structural representation of guidance component in the present invention.
Fig. 6 is C-C views in Fig. 5.
Fig. 7 is the structural representation of bottom valve assembly in the present invention.
Each label is represented in figure：
1st, oil storage cylinder；11st, cylinder body outer tube；12nd, base；121st, installing blind；13rd, shoe cream room；14th, oil guide pipe；2nd, piston
Component；21st, piston；22nd, piston rod；23rd, piston seal；24th, black box；3rd, operating cylinder；31st, first chamber；32nd,
Two chambers；4th, bottom valve assembly；41st, axially extending bore；42nd, one way stop peturn valve；421st, nonreturn valve core；422nd, taper spring；43rd, axially
Centre bore；45th, screw plug；46th, foot valve seat；461st, oil return through-hole；47th, oil through；5th, guidance component；51st, the first installing hole；52、
Second installing hole；53rd, through hole；6th, gland；7th, compression damping regulating valve；71st, compression damping valve body；72nd, compression damping end cap；
73rd, compression damping valve element；74th, compression damping spring；75th, compression damping regulating nut；8th, check-valves is stretched；81st, non-return is stretched
Valve body；82nd, non-return valve core is stretched；83rd, check spring is stretched；84th, non-return regulating nut is stretched；9th, stretching damping regulating valve；91、
Stretching damping valve body；92nd, stretching damping valve element；93rd, damping spring is stretched；94th, stretching damping regulating nut；96th, Oil Guide pipe box.
Specific embodiment
The present invention is described in further detail below in conjunction with Figure of description and specific embodiment.
Fig. 1 to Fig. 7 shows a kind of embodiment of oil-pressure damper of the present invention, and the oil-pressure damper includes oil storage cylinder 1, lives
Plug assembly 2, operating cylinder 3, bottom valve assembly 4, guidance component 5 and gland 6, oil storage cylinder 1 includes cylinder body outer tube 11 and is fixed on cylinder
The base 12 of the external front end of cylinder 11, operating cylinder 3 is located in cylinder body outer tube 11, and forms shoe cream room between cylinder body outer tube 11
13, bottom valve assembly 4 is covered on the front end of operating cylinder 3 and abuts with base 12, and guidance component 5 is located at the rear end of operating cylinder 3,
Located at the rear end of cylinder body outer tube 11, piston component 2 includes piston 21 and piston rod 22 in operating cylinder 3, piston to gland 6
Bar 22 is outside through guidance component 5 and gland 6 away from the one end of piston 21, and 3 points by operating cylinder of piston 21 is the He of first chamber 31
Second chamber 32, base 12 is provided with compression damping regulating valve 7, and bottom valve assembly 4 is provided with axially extending bore 41, and compression damping is adjusted
The import of valve 7 is connected and exported and connects with shoe cream room 13 with axially extending bore 41 and first chamber 31 successively, and guidance component 5 is provided with
Stretching check-valves 8 and stretching damping regulating valve 9, the import for stretching check-valves 8 is connected with shoe cream room 13 and exported and second chamber
32 connections, the import of stretching damping regulating valve 9 is connected with second chamber 32 and exported and connects with shoe cream room 13, on bottom valve assembly 4
It is additionally provided with the one way stop peturn valve 42 for allowing fluid to flow from shoe cream room 13 to first chamber 31.
In the present embodiment, piston 21 is in can to lead to without oil circuit on closed design, i.e. piston 21.It is provided with and drawing in shoe cream room 13
Check-valves 8 and the corresponding oil guide pipe 14 of stretching damping regulating valve 9 are stretched, the import of check-valves 8 is stretched by oil guide pipe 14 and oil storage
Chamber 13 connects, and the stretching damping outlet of regulating valve 9 is connected by oil guide pipe 14 with shoe cream room 13.When the oil-pressure damper works, storage
Oil pocket 13 is in upright state, by arranging oil guide pipe 14, thereby may be ensured that the fluid in shoe cream room 13 does not fill up oil storage
During chamber 13, the fluid of shoe cream room 13 can pass through the import that oil guide pipe 14 enters stretching check-valves 8；In addition oil guide pipe 14 is adopted,
The bubble in fluid can be eliminated.
In the present embodiment, the peripheral surface of base 12 is provided with installing blind 121, and compression damping regulating valve 7 is installed on installation
In blind hole 121, the adjustment portion of compression damping regulating valve 7 is towards outside installing blind 121.Compression damping regulating valve 7 includes compression resistance
Buddhist nun's end cap 72 and the compression damping valve body 71, compression damping valve element 73, the compression damping spring that are sequentially arranged in installing blind 121
74th, compression damping regulating nut 75, compression damping valve body 71 is provided with centre bore, and the two ends of centre bore are respectively compression damping tune
The inlet and outlet of section valve 7, compression damping valve element 73 is against compression damping regulating valve 7（That is compression damping regulation valve body 71）Go out
Mouthful, it is generally the case that the port closing, compression damping spring 74 is supported located at compression damping valve element 73 and compression damping regulating nut
Between 75, compression damping valve element 73 can in the axial direction be moved in the case where oil liquid pressure overcomes spring force, so as to open this
Outlet；Compression damping valve element 73 is provided with fixed orifice；Compression damping regulating nut 75 connects with the inner thread of installing blind 121
Connect, compression damping end cap 72 is covered on compression damping regulating nut 75, the adjustment portion of compression damping regulating valve 7 is compression damping
Regulating nut 75, compression damping end cap 72 is used for dust-proof and seal compression damping regulating valve 7.Spiral shell is adjusted by adjusting compression damping
Cap 75 adjusting the pretightning force of compression damping spring 74, so as to realizing that the compression damping power to compression damping regulating valve 7 is carried out
Adjust.The present embodiment can be compressed the regulation and control of damping force in the outside of damper structure, simple to operate, reduce
Labour intensity, saves the time.
In the present embodiment, base 12 is provided with the axial center hole coaxial with axially extending bore 41 near the end face of bottom valve assembly 4
43, installing blind 121 is vertical with axial center hole 43 and is connected with axially extending bore 41 by axial center hole 43, installing blind
121 are set to two, as shown in figure 4, being mutually perpendicular to and connecting, each installing blind 121 is provided with one group of compression damping regulating valve 7,
The design parameter of compression damping valve body 71, compression damping valve element 73 and compression damping spring 74 in two groups of compression damping regulating valves 7
It is different.Fixed orifice is big on the size and shape of the centre bore on valve body in i.e. two groups compression damping regulating valves 7, valve element
Little, spring rigidity Design is different, is determined according to the drag characteristic of shock absorber.
In the present embodiment, the bottom that bottom valve assembly 4 includes screw plug 45 and is sheathed on outside screw plug 45 and coordinates with the screw thread of screw plug 45
Valve seat 46, screw plug 45 stretches out foot valve seat 46 away from one end of base 12, and axially extending bore 41 is located on screw plug 45, the direction of foot valve seat 46
The end face of piston 21 is provided with oil return through-hole 461, and shoe cream room 13 is connected by oil return through-hole 461 with first chamber 31, unidirectional to stop
Returning valve 42 includes nonreturn valve core 421 and taper spring 422, and nonreturn valve core 421 covers oil return through-hole 461, and taper spring 422 is supported and set
Between the nut of nonreturn valve core 421 and screw plug 45.As shown in Fig. 2 foot valve seat 46 on be additionally provided with oil through 47, shoe cream room 13
In fluid can enter oil return through-hole 461 through oil through 47, and then into first chamber 31, during stretching travel, the first chamber
Room 31 is low pressure, and the fluid in shoe cream room 13 can back down nonreturn valve core 421 to open oil return through-hole 461, in making shoe cream room 13
Fluid to the repairing of first chamber 31.
In the present embodiment, one end end face on guidance component 5 near gland 6 be provided with for stretching check-valves 8 is installed the
One installing hole 51 and the second installing hole 52 for installing stretching damping regulating valve 9, stretch the adjustment portion direction first of check-valves 8
Outside installing hole 51, the adjustment portion of stretching damping regulating valve 9 is towards outside the second installing hole 52.The present embodiment is realized in shock absorber knot
The outside of structure can carry out stretching the regulation and control of check-valves 8 and stretching damping regulating valve 9, simple to operate, reduce work
Intensity, saves the time.
In the present embodiment, stretching check valve body 81, stretching that check-valves 8 includes being sequentially arranged in the first installing hole 51 are stretched
Non-return valve core 82, stretching check spring 83 and stretching non-return regulating nut 84, stretching check valve body 81 is provided with centre bore, center
The two ends in hole are the inlet and outlet of the valve, and stretching non-return valve core 82 is against stretching check-valves 8（Stretching check valve body 81）Go out
Mouthful, stretching check spring 83 is supported between stretching non-return valve core 82 and stretching non-return regulating nut 84, stretches non-return valve core 82
Can in the axial direction move in the case where oil liquid pressure overcomes spring force, so as to open the outlet；Stretching non-return regulating nut
84 are connected with the inner thread of the first installing hole 51, and the adjustment portion for stretching check-valves 8 is stretching non-return regulating nut 84.Stretching non-return
Regulating nut 84 can be used to adjust the rigidity of stretching check spring 83, produce 83 pairs of stretching non-return valve cores 82 of stretching check spring
Suitable pretightning force, the rigidity for stretching check spring 83 is smaller, and Main Function is to allow stretching non-return valve core 82 in normally closed
State.
In the present embodiment, stretching damping regulating valve 9 include be sequentially arranged in the second installing hole 52 stretching damping valve body 91,
Stretching damping valve element 92, stretching damping spring 93 and stretching damping regulating nut 94, stretching damping valve body 91 is provided with centre bore,
The two ends of centre bore are inlet and outlet, and the outlet is connected with oil guide pipe 14, and stretching damping valve element 92 is adjusted against stretching damping
Valve 9（Stretching damping valve body 91）Outlet, it is generally the case that the port closing, stretching damping valve element 92 be provided with fixed restriction
Hole, stretching damping spring 93 is supported between stretching damping valve element 92 and stretching damping regulating nut 94, stretching damping valve element 92
Can in the axial direction move in the case where oil liquid pressure overcomes spring force, so as to open the outlet；Stretching damping regulating nut
94 are connected with the inner thread of the second installing hole 52, and the adjustment portion of stretching damping regulating valve 9 is stretching damping regulating nut 94, is passed through
Stretching damping regulating nut 94 is adjusted to adjust the pretightning force of stretching damping spring 93 to realize the regulation to stretching damping force.
Guidance component 5 is provided with Oil Guide pipe box 96, and the one end of Oil Guide pipe box 96 damps the outlet of regulation valve body 91, the other end with stretching
It is connected with oil guide pipe 14.
In the present embodiment, stretching check-valves 8 and stretching damping regulating valve 9 are respectively set to two groups, and four groups of valves are all placed in leading
On bearing assembly 5, as shown in figure 5, and circumferentially shape distribution.Check valve body 81, stretching check-valves are stretched in two groups of stretching check-valves 8
Core 82 is identical with the design parameter of stretching check spring 83, stretching damping valve body 91, stretching resistance in two groups of stretching damping regulating valves 9
Buddhist nun's valve element 92 is different with the design parameter of stretching damping spring 93, i.e., centre bore on its valve seat in two groups stretching damping regulating valves 9
Size and shape, the size of fixed orifice, the rigidity Design of spring are different on valve element, according to the resistance of shock absorber
Characteristic is determined.
In the present embodiment, piston seal 23, piston rod 22 and guidance are provided between the inwall of piston 21 and operating cylinder 3
Black box 24 is provided between component 5.Piston 21 can lead on piston 21 in closed without oil circuit.In the center line of guidance component 5
Direction is provided with through hole 53, and a few road grooves are provided with through hole 53, is that piston rod 22 is moved back and forth for installing black box 24
Seal, while also having moved back and forth support and guide effect for piston rod 22.
The operation principle of the present embodiment oil-pressure damper：When shock absorber works, piston rod 22 drives under external force work
Plug 21 makees stretching in operating cylinder 3 and compression is moved back and forth, with fluid as working media, as shown in figure 1, piston rod 22 draws
When stretching, band piston 21 is moved right, and now the stretching check-valves 8 in guidance component 5 is closed, and the fluid in second chamber 32 is received
Pressure, fluid can only flow to stretching damping regulating valve 9（Shown in Fig. 1 arrow L1）, when oil pressure is more than the pretension of stretching damping spring 93
Stretching damping valve element 92, gap of the fluid between stretching damping valve element 92 and stretching damping valve body 91 can be backed down during power（Outlet）Stream
Shoe cream room 13 is flowed to again to after oil guide pipe 14（Shown in Fig. 1 arrow L2）, the now cavity volume of first chamber 31 increasing of operating cylinder 3
Greatly, reduced pressure, required makeup oil is backed down the one way stop peturn valve 42 on bottom valve assembly 4 by the fluid in shoe cream room 13, to first
The repairing of chamber 31（Shown in Fig. 1 arrow L3）, the damping force being consequently formed during stretching, the size and characteristic of damping force can be by adjusting
Stretching damping regulating nut 94 changes the pretightning force of stretching damping spring 93 adjusting.
When piston rod 22 compresses, to left movement, the fluid in first chamber 31 is pressurized, and fluid can only first lead to for band piston 21
Cross the axially extending bore 41 of screw plug 45 in bottom valve assembly 4（Shown in Fig. 1 arrow Y1）, then flow to the compression damping regulation on base 12
Valve 7, when pretightning force of the oil pressure more than compression damping spring 74 compression damping valve element 73 can be backed down, and fluid is from compression damping valve element
Gap between 73 and compression damping valve body 71（Outlet）Flow to shoe cream room 13（Shown in Fig. 1 arrow Y2）, the now chamber of second chamber 32
Volume increases, reduced pressure, and required makeup oil is backed down stretching in guidance component 5 and stopped by the fluid Jing oil guide pipes 14 in shoe cream room 13
The stretching non-return valve core 82 of valve 8 is returned, to the repairing of second chamber 32（Shown in Fig. 1 arrow Y3）, stretch the stretching non-return in check-valves 8
The pretightning force of spring 83 sets smaller, and the fluid Jing oil guide pipes 14 in shoe cream room 13 can easily back down stretching non-return valve core 82, by
This forms damping force during compression, and the size and characteristic of compression damping power can change pressure by adjusting compression damping regulating nut 75
The pretightning force of contracting damping spring 74 is adjusting.
Because piston 21 without oil circuit in leading on closed design, i.e. piston 21 in the present embodiment, i.e. the He of first chamber 31
Second chamber 32 without connection, such that it is able to realize stretching damping force and compression damping power can separate regulation, solve stretching and press
Contracting damping force asymmetry problem.
The sectional area of piston 21 in the present embodiment is the twice of the sectional area of piston rod 22, when the reciprocating stroke of piston rod 22
When identical, then the twice when oil mass that compression travel is discharged in shoe cream room 13 is also stretching travel, in order to obtain in tension and compression stroke
To the symmetrical damping characteristic of identical, then valve seat in compression damping regulating valve 7, valve element, spring are damped in regulating valve 9 with stretching
Valve seat, valve element, spring design are different, and adjusting stretching damping force is adjusted using stretching damping regulating valve 9, and adjusts pressure
Contracting damping force is adjusted using compression damping regulating valve 7, due to compression damping regulating valve 7 and the tune of stretching damping regulating valve 9
Section nut is arranged at shock absorber outer end, such that it is able to easily in structural outer regulation.Additionally, stretching damping regulating valve
9 and compression damping regulating valve 7 arrange two groups, because the design of the valve body in two groups of valves, valve element and spring it is all different, by two
Group valve is combined as using, the damping force characteristic of various various combinations when can be stretched, be compressed.
Although the present invention is disclosed above with preferred embodiment, but it is not limited to the present invention.It is any to be familiar with ability
The technical staff in domain, in the case of without departing from technical solution of the present invention scope, all using the technology contents pair of the disclosure above
Technical solution of the present invention makes many possible variations and modification, or the Equivalent embodiments for being revised as equivalent variations.Therefore, it is every
Without departing from the content of technical solution of the present invention, according to the technology of the present invention essence to any simple modification made for any of the above embodiments,
Equivalent variations and modification, all should fall in the range of technical solution of the present invention protection.
Claims (10)
1. a kind of oil-pressure damper, including oil storage cylinder（1）, piston component（2）, operating cylinder（3）, bottom valve assembly（4）, guidance group
Part（5）And gland（6）, the oil storage cylinder（1）Including cylinder body outer tube（11）Be fixed on cylinder body outer tube（11）The base of front end
（12）, the operating cylinder（3）Positioned at cylinder body outer tube（11）It is interior, and with cylinder body outer tube（11）Between form shoe cream room（13）, institute
State bottom valve assembly（4）Located at the operating cylinder（3）Front end and with the base（12）Abut, the guidance component（5）If
In the operating cylinder（3）Rear end, the gland（6）Located at cylinder body outer tube（11）Rear end, the piston component（2）Including
Located at operating cylinder（3）Interior piston（21）And piston rod（22）, the piston rod（22）Away from piston（21）One end passes through and leads
Bearing assembly（5）And gland（6）Outwards, the piston（21）By operating cylinder（3）It is divided into first chamber（31）And second chamber
（32）, it is characterised in that the base（12）It is provided with compression damping regulating valve（7）, the bottom valve assembly（4）It is provided with axial direction
Through hole（41）, the compression damping regulating valve（7）Import successively with axially extending bore（41）And first chamber（31）Connect and go out
Mouth and shoe cream room（13）Connection, the guidance component（5）It is provided with stretching check-valves（8）With stretching damping regulating valve（9）, it is described
Stretching check-valves（8）Import and shoe cream room（13）Connection and outlet and second chamber（32）Connection, the stretching damping is adjusted
Valve（9）Import and second chamber（32）Connection and outlet and shoe cream room（13）Connection, the bottom valve assembly（4）On be additionally provided with it is fair
Perhaps fluid is from shoe cream room（13）To first chamber（31）The one way stop peturn valve of flowing（42）.
2. oil-pressure damper according to claim 1, it is characterised in that：The piston（21）In closed design, i.e. institute
State piston（21）On can lead to without oil circuit, the piston（21）With operating cylinder（3）Inwall between be provided with piston seal（23）,
The piston rod（22）With guidance component（5）Between be provided with black box（24）.
3. oil-pressure damper according to claim 1 and 2, it is characterised in that：The shoe cream room（13）Inside be provided with it is described
Stretching check-valves（8）With stretching damping regulating valve（9）The oil guide pipe of correspondence connection（14）, the stretching check-valves（8）Import
By oil guide pipe（14）With shoe cream room（13）Connection, the stretching damping regulating valve（9）Outlet passes through oil guide pipe（14）With oil storage
Chamber（13）Connection.
4. oil-pressure damper according to claim 1 and 2, it is characterised in that：The base（12）Peripheral surface is provided with
Installing blind（121）, the compression damping regulating valve（7）It is installed on the installing blind（121）Interior, the compression damping is adjusted
Valve（7）Adjustment portion towards installing blind（121）Outward, the guidance component（5）Upper close gland（6）One end end face be provided with use
Check-valves is stretched in installing（8）The first installing hole（51）Regulating valve is damped with for installing stretching（9）The second installing hole
（52）, the stretching check-valves（8）Adjustment portion towards the first installing hole（51）Outward, the stretching damping regulating valve（9）Tune
Section portion is towards the second installing hole（52）Outward.
5. oil-pressure damper according to claim 4, it is characterised in that：The compression damping regulating valve（7）Including compression
Damping end cap（72）Be sequentially arranged in the installing blind（121）Interior compression damping valve body（71）, compression damping valve element（73）、
Compression damping spring（74）, compression damping regulating nut（75）, the compression damping valve element（73）Adjust against the compression damping
Section valve（7）Outlet, the compression damping spring（74）To located at compression damping valve element（73）With compression damping regulating nut
（75）Between, the compression damping regulating nut（75）With installing blind（121）Inner thread connects, the compression damping end cap
（72）It is covered on compression damping regulating nut（75）On, the compression damping regulating valve（7）Adjustment portion be the compression damping
Regulating nut（75）.
6. oil-pressure damper according to claim 4, it is characterised in that：The base（12）Near bottom valve assembly（4）'s
End face is provided with and the axially extending bore（41）Coaxial axial center hole（43）, the installing blind（121）In the axial direction
Heart hole（43）Vertically and by axial center hole（43）With axially extending bore（41）Connection, the installing blind（121）Two are set to,
It is mutually perpendicular to and connects, each installing blind（121）It is provided with one group of compression damping regulating valve（7）, two groups of compression damping regulating valves
（7）Middle compression damping valve body（71）, compression damping valve element（73）With compression damping spring（74）Design parameter it is different.
7. oil-pressure damper according to claim 3, it is characterised in that：The bottom valve assembly（4）Including screw plug（45）With
It is sheathed on screw plug（45）Outer and and screw plug（45）The foot valve seat that screw thread coordinates（46）, the screw plug（45）Away from base（12）One
Stretch out foot valve seat in end（46）, the axially extending bore（41）Positioned at screw plug（45）On, the foot valve seat（46）Towards piston（21）'s
End face is provided with oil return through-hole（461）, the shoe cream room（13）By oil return through-hole（461）With first chamber（31）Connection, institute
State one way stop peturn valve（42）Including nonreturn valve core（421）And taper spring（422）, the nonreturn valve core（421）Cover described returning
Oil hole（461）, the taper spring（422）To located at nonreturn valve core（421）With screw plug（45）Nut between.
8. oil-pressure damper according to claim 4, it is characterised in that：The stretching check-valves（8）Including being sequentially arranged in
First installing hole（51）Interior stretching check valve body（81）, stretching non-return valve core（82）, stretching check spring（83）And drawing
Stretch non-return regulating nut（84）, the stretching non-return valve core（82）Against the stretching check-valves（8）Outlet, the stretching stops
Resilience spring（83）To located at stretching non-return valve core（82）With stretching non-return regulating nut（84）Between, the stretching non-return adjusts spiral shell
Cap（84）With the first installing hole（51）Inner thread connects, the stretching check-valves（8）Adjustment portion for it is described stretching non-return adjust
Section nut（84）.
9. oil-pressure damper according to claim 8, it is characterised in that：The stretching damping regulating valve（9）Including successively
Located at second installing hole（52）Interior stretching damping valve body（91）, stretching damping valve element（92）, stretching damping spring（93）
With stretching damping regulating nut（94）, the stretching damping valve element（92）Against the stretching damping regulating valve（9）Outlet, institute
State stretching damping spring（93）To located at stretching damping valve element（92）With stretching damping regulating nut（94）Between, the stretching resistance
Buddhist nun's regulating nut（94）With the second installing hole（52）Inner thread connects, the stretching damping regulating valve（9）Adjustment portion be institute
State stretching damping regulating nut（94）.
10. oil-pressure damper according to claim 9, it is characterised in that：The stretching check-valves（8）Adjust with stretching damping
Section valve（9）Two groups are respectively set to, two groups of stretching check-valves（8）Middle stretching check valve body（81）, stretching non-return valve core（82）With
Stretching check spring（83）Design parameter it is identical, two groups of stretchings damp regulating valves（9）Middle stretching damping valve body（91）, stretching resistance
Buddhist nun's valve element（92）With stretching damping spring（93）Design parameter it is different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510735321.0A CN105240442B (en) | 2015-11-03 | 2015-11-03 | Oil damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510735321.0A CN105240442B (en) | 2015-11-03 | 2015-11-03 | Oil damper |
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| Publication Number | Publication Date |
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| CN105240442A CN105240442A (en) | 2016-01-13 |
| CN105240442B true CN105240442B (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510735321.0A Active CN105240442B (en) | 2015-11-03 | 2015-11-03 | Oil damper |
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| CN (1) | CN105240442B (en) |
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| CN106704442B (en) * | 2017-03-24 | 2019-11-08 | 中国北方车辆研究所 | Hydro-pneumatic spring |
| CN107839489B (en) * | 2017-11-30 | 2023-09-12 | 株洲联诚集团控股股份有限公司 | Pantograph |
| CN107830098B (en) * | 2017-11-30 | 2023-08-22 | 株洲联诚集团控股股份有限公司 | Damper for pantograph and method for adjusting maximum damping force of stretching of damper |
| CN108679146A (en) * | 2018-07-02 | 2018-10-19 | 中车戚墅堰机车车辆工艺研究所有限公司 | A kind of EMU oil-pressure damper |
| CN108869622B (en) * | 2018-07-24 | 2023-05-23 | 广东机电职业技术学院 | Plunger type buffer device |
| CN109458428B (en) * | 2018-12-28 | 2024-03-12 | 湖南联诚轨道装备有限公司 | Damping piston debugging tool |
| CN110107634A (en) * | 2019-06-11 | 2019-08-09 | 湖南联诚轨道装备有限公司 | A kind of new double circulation oil-pressure damper |
| CN110439952B (en) * | 2019-09-05 | 2024-02-27 | 株洲联诚集团减振器有限责任公司 | Hydraulic damper and design method thereof |
| CN110701232A (en) * | 2019-09-29 | 2020-01-17 | 成都博仕腾科技有限公司 | Double-oil-way electric control variable damping semi-active oil pressure shock absorber for railway vehicle |
| CN111306235A (en) * | 2019-10-31 | 2020-06-19 | 浙江盾安轨道交通设备有限公司 | Anti-snaking shock absorber, bogie and railway vehicle |
| CN110822006A (en) * | 2019-11-26 | 2020-02-21 | 北京强度环境研究所 | Hydraulic shock absorber |
| CN111255847B (en) * | 2020-01-17 | 2021-12-03 | 常州中车柴油机零部件有限公司 | Vibration damper for railway vehicle |
| CN112253671A (en) * | 2020-10-26 | 2021-01-22 | 成都九鼎科技(集团)有限公司 | Gradual change formula stroke control damping shock absorber |
| CN114046332B (en) * | 2021-11-17 | 2023-08-04 | 浙江路得坦摩汽车部件股份有限公司 | Independent exhaust pressure release's shock absorber |
| CN114483856A (en) * | 2022-03-08 | 2022-05-13 | 山东凌博瑞轨道交通科技有限公司 | Single-cycle oil pressure shock absorber compression valve system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201665223U (en) * | 2009-12-15 | 2010-12-08 | 深圳市中车业成实业有限公司 | Oil-pressure damper for rail locomotives and vehicles |
| JP5702089B2 (en) * | 2010-08-31 | 2015-04-15 | ヤクモ株式会社 | Oil damper |
| CN204061690U (en) * | 2014-08-14 | 2014-12-31 | 株洲时代装备技术有限责任公司 | Oil-pressure damper |
| CN204253714U (en) * | 2014-11-05 | 2015-04-08 | 株洲时代装备技术有限责任公司 | A kind of oil-pressure damper being beneficial to heat radiation |
| CN205173350U (en) * | 2015-11-03 | 2016-04-20 | 株洲时代装备技术有限责任公司 | Hydraulic shock absorber |
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Address after: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road No. 169 Patentee after: ZHUZHOU CRRC TIMES EQUIPMENT TECHNOLOGY Co.,Ltd. Address before: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road No. 169 Patentee before: ZHUZHOU TIMES EQUIPMENT TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20171211 Address after: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road No. 169 Patentee after: ZHUZHOU CRRC TIMES ELECTRIC Co.,Ltd. Address before: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road No. 169 Patentee before: ZHUZHOU CRRC TIMES EQUIPMENT TECHNOLOGY Co.,Ltd. |
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