CN203532608U - Variable damping shock absorber controlled through high-pressure oil - Google Patents
Variable damping shock absorber controlled through high-pressure oil Download PDFInfo
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- CN203532608U CN203532608U CN201320533263.XU CN201320533263U CN203532608U CN 203532608 U CN203532608 U CN 203532608U CN 201320533263 U CN201320533263 U CN 201320533263U CN 203532608 U CN203532608 U CN 203532608U
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- spool
- piston rod
- piston
- pressure oil
- sliding block
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Abstract
The utility model discloses a variable damping shock absorber controlled through high-pressure oil. The variable damping shock absorber is mainly composed of a piston rod which is provided with a piston rod center hole and an annular cavity formed in the end of the piston rod, a piston fixedly connected with the piston rod through a valve element, and a sliding block connected to the outer surface of the valve element in a sliding mode. The inner upper end face of the sliding block is limited by the piston rod, the lower portion of a sliding block spring abuts against the upper end face of a flow valve limiting seat, and the upper portion of the sliding block spring abuts against the lower end face of the upper portion of the sliding block. When the sliding block moves to a bottom dead center with the flow valve limiting seat, only the second radial hole of the valve element is closed, and reliability of a flow valve block is high; when the sliding block moves the bottom dead center without the flow valve limiting seat, the second radial hole of the valve element and the flow valve block are closed at the same time, and the damping adjustment range is wider. Variable damping is achieved through an external high-pressure oil line, the variable range is wide, the structure is simple, moreover, on the basis of an exiting passive shock absorber, through slight improvement, the variable damping characteristic can be achieved, and compared with an existing variable damping shock absorber, the variable damping shock absorber is lower in cost.
Description
Technical field
The invention belongs to liquid-springing technical field, be specifically related to a kind ofly utilize external high-pressure oil passage to realize the adjustable vibration damper of damping.
Background technique
Common vehicle suspension is with being provided with rebound valve, compression valve, recuperation valve and flowing valve in vibration damper.When vehicle frame (or monocoque body) and vehicle bridge relative movement, the piston of vibration damper will be reciprocating in cylinder barrel, and the fluid in active chamber will be to decay from vibration and the impact of ground and motor thereby produce damping force by each valve.The size of its damping depends on the flexible size of each valve member valve block group; Once after each valve block group adjustment is installed, the damping characteristic of this each valve member of vibration damper and the damping property of vibration damper are also just definite, its scope that adapts to pavement behavior is also determined thereupon.When the pavement behavior of Vehicle Driving Cycle exceeds accommodation, excessive or too small and do not reach the effectiveness in vibration suppression of coupling with regard to there will be damping power, the damping property of vibration damper more can not need to automatically be adjusted according to operating mode in Vehicle Driving Cycle process.
Existing ride control shock absorber form has a variety of, as magneto-rheological vibration damper, current transformation vibration damper and throttle orifice variable-damping shock etc., mainly to realize by changing the physical parameter of damper, the one, by the flowing medium changing in damper, realize, the 2nd, by changing the area of throttle orifice, realize.Yet, in prior art, mostly being external power supply unit or directly utilizing stepper motor to realize above-mentioned functions, cost is higher, and complex structure.In addition, only have several companies can produce high-quality magnetic flow liquid and electrorheological fluid, its cost is higher.
Summary of the invention
The object of the present invention is to provide and a kind ofly utilize external high-pressure oil passage to realize the adjustable vibration damper of damping, its adjustable extent is large, simple in structure, and can on the basis of existing passive damper, improve a little, can realize change damping characteristic, and cost is lower.
The present invention is achieved through the following technical solutions:
A kind of high pressure oil control variable-damping shock, comprise piston rod, piston, it is characterized in that: also comprise the spool being connected between piston rod and piston, be slidably connected at the slide block of valve core outer surface, be sleeved on the sliding block spring on slide block, be arranged on the circulation valve block on piston, described slide block inner upper end face is spacing by piston rod, and align with piston rod end annular chamber, the sliding block spring bottom with pretightening force withstands on the upper-end surface of the flowing valve position limit socket of circulation valve block, and sliding block spring top withstands on the lower end surface, top of slide block; Described piston rod is processed with piston rod center hole and piston rod end annular chamber; Spool first axial bore of described spool upper end is aimed at piston rod center hole, and spool the first radial hole is communicated with spool the first axial bore and piston rod end annular chamber; Spool second radial hole of spool lower end and spool the second axial bore are communicated with upper oil cavitie and lower oil cavitie.
The upper and lower inner side of described slide block seals by seal ring A and seal ring B respectively, prevents that high pressure oil from spilling into vibration damper fluid from piston rod end annular chamber;
The outer surface of described piston is set with piston packing ring; Piston upper-end surface is provided with circulation valve block, and for the flow of control piston through hole, piston is connected by gland nut and spool lower end;
Spool first axial bore of described spool upper end is aimed at piston rod center hole, and spool the first radial hole is communicated with spool the first axial bore and piston rod end annular chamber;
Spool second radial hole of described spool lower end and spool the second axial bore are communicated with upper oil cavitie and lower oil cavitie, when slide block down sliding, spool the second radial hole are blocked, and then have been intercepted this path.
When needs increase damping force, to piston rod center hole, inject high pressure oil, high-pressure oil flow is through piston rod center hole, spool the first axial bore and spool the first radial hole, arrive piston rod end annular chamber, when the pressure that imposes on slide block inner upper end face when high pressure oil is greater than the elastic force of sliding block spring, slide block down sliding, partly or entirely blocks spool the second radial hole, and then intercepted this path, increased damping force.
Alternatively, circulation valve block is not undertaken spacing by flowing valve position limit socket, but directly spacing by sliding block spring lower end; Now, when slide block down sliding, close spool the second radial hole and circulation valve block simultaneously, and then reduced to a greater degree circulation area, increased damping force.
Alternatively, spool and piston rod are integrated part.
Preferably, in order to reach the target of slide block damping continuous variable when valve core outer surface slides, spool second radial hole of spool lower end can be more than one, but a plurality of along radially divergently arranging, and the axis in each hole can be in same plane, or in Different Plane, the diameter in each hole can be identical, also can select different pore size according to the requirement of damping change; In addition, spool the second radial hole also can be processed with rectangle or leaf spiral chute around, and spiral fluted section form can be selected according to the requirement of damping change.
Preferably, the flow resistance producing due to elongated orifices is larger, and more responsive to the viscosity-temperature characteristics of fluid, spool the second axial bore can be processed into shoulder hole.
Advantage of the present invention and beneficial effect are:
1, because most engineering vehicles and heavy vehicle have high pressure fuel source, the present invention is ingenious utilizes external high-pressure oil passage to realize the adjustable vibration damper of damping, its adjustable extent is large, simple in structure, and can on the basis of existing passive damper, improve a little, can realize change damping characteristic, with respect to existing ride control shock absorber, cost is lower;
2, the present invention, when with flowing valve position limit socket, when slide block movement arrives lower dead center, only closes spool the second radial hole, and the reliability of the valve block that now circulates is higher; When without flowing valve position limit socket, spacing for circulation valve block by sliding block spring and slide block lower end surface, when slide block movement arrives lower dead center, close spool the second radial hole and circulation valve block simultaneously, damp adjustable range is larger; It should be noted that above-mentioned two kinds of embodiments only need to remove or flowing valve position limit socket is installed, the processing at other positions is not affected, therefore can be according to the needs of resistance regulation range, and consider the reliability requirement of circulation valve block, select flexibly.
Accompanying drawing explanation
Fig. 1 is high pressure oil control variable-damping shock overall structure schematic diagram of the present invention;
Fig. 2 is the local enlarged diagram of the piston assembly of the present invention during with flowing valve position limit socket;
Fig. 3 is the local enlarged diagram of the piston assembly of the present invention during not with flowing valve position limit socket;
Fig. 4 is piston rod of the present invention and the spool structural representation while being made of one;
Fig. 5 is a kind of preferred embodiment structural representation of spool, and wherein Fig. 5 a is graphics, and Fig. 5 b is front view, the sectional view that Fig. 5 c is front view, and Fig. 5 d is the embodiment that spool the second axial bore is processed into shoulder hole;
Fig. 6 a, Fig. 6 b, Fig. 6 c, Fig. 6 d, Fig. 6 e, Fig. 6 f are the different mode of execution structural drawing of six kinds of spool the second radial hole.
Reference character in above-mentioned accompanying drawing:
1, piston rod; 1-1, piston rod center hole; 1-2, piston rod end annular chamber; 2, seal ring A; 3, slide block; 4, seal ring B; 5, sliding block spring; 6, flowing valve position limit socket; 7, circulation valve block; 8, piston packing ring; 9, piston; 9-1, piston hole; 10, gland nut; 11, spool; 11-1, spool the first axial bore; 11-2, spool the first radial hole; 11-3, spool the second radial hole; 11-4, spool the second axial bore; 12, lower oil cavitie; 13, upper oil cavitie.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail:
Fig. 1 is a kind of embodiment's of the present invention overall schematic, be a kind of dual-tube shock absorber, it should be noted that core of the present invention is the innovation of piston assembly, it is not only applicable to dual-tube shock absorber, is also suitable for other vibration dampers such as vibration damper, pump formula vibration damper of single cylinder aerating.
As shown in Figure 2, for the piston assembly structure figure of the present invention with flowing valve position limit socket, it comprises the piston rod 1 that is processed with piston rod center hole 1-1 and piston rod end annular chamber 1-2, piston 9, be connected in the spool 11 between piston rod 1 and piston 9, be slidably connected at the slide block 3 of spool 11 outer surfaces and be sleeved on the sliding block spring 5 on slide block 3, be arranged on the circulation valve block 7 on piston 9, slide block 3 inner upper end faces are spacing by piston rod 1, and align with piston rod end annular chamber 1-2, sliding block spring 5 bottoms with pretightening force withstand on the upper-end surface of the flowing valve position limit socket 6 of circulation valve block 7, sliding block spring 5 tops withstand on the lower end surface, top of slide block 3.
Described piston rod 1 is processed with piston rod center hole 1-1 and piston rod end annular chamber 1-2;
The spool first axial bore 11-1 of described spool 11 upper ends aims at piston rod center hole 1-1, and spool the first radial hole 11-2 is communicated with spool the first axial bore 11-1 and piston rod end annular chamber 1-2; The spool second radial hole 11-3 of spool 11 lower ends and spool the second axial bore 11-4 are communicated with upper oil cavitie 13 and lower oil cavitie 12, when slide block 3 down sliding, spool the second radial hole 11-3 is blocked, and then intercepted this path;
When needs increase damping force, to piston rod center hole 1-1, inject high pressure oil, high-pressure oil flow is through piston rod center hole 1-1, spool the first axial bore 11-1 and spool the first radial hole 11-2, arrive piston rod end annular chamber 1-2, when the pressure that imposes on slide block 3 inner upper end faces when high pressure oil is greater than the elastic force of sliding block spring 5, slide block 3 down slidings, partly or entirely block spool the second radial hole 11-3, and then intercepted this path, increased damping force.
In addition, slide block seals by seal ring A2 and seal ring B4 respectively inner side Shang Xia 3, prevents that high pressure oil from spilling into vibration damper fluid from piston rod end annular chamber 1-2;
The outer surface of piston 9 is set with piston packing ring 8; Piston 9 upper-end surfaces are provided with circulation valve block 7, and for the flow of control piston through hole 9-1, piston 9 is connected by gland nut 10 and spool 11 lower ends;
As shown in Figure 3, be the piston assembly structure figure of the present invention without flowing valve position limit socket, wherein said circulation valve block 7 is not undertaken spacing by flowing valve position limit socket 6, but directly spacing by sliding block spring 5 lower ends; Now, when slide block 3 down sliding, close spool the second radial hole 11-3 and circulation valve block 7 simultaneously, and then reduced to a greater degree circulation area, increased damping force.
Fig. 4 is structural drawing when piston rod 1 is made of one with spool 11 in the present invention, and wherein said spool 11 processes by whole bar with piston rod 1.
Fig. 6 is the different mode of execution structural drawing of six kinds of spool the second radial hole 11-3, is mainly in order to reach the target of slide block 3 damping continuous variable when spool 11 outer surfaces slide.
The spool second radial hole 11-3 of spool 11 lower ends can be more than one, but a plurality of along radially divergently arranging, and the axis in each hole can be in same plane, as shown in Fig. 6 b and Fig. 6 c; Or in Different Plane, as shown in Fig. 6 a and Fig. 6 d;
The diameter in each hole can be identical, as shown in Fig. 6 c and Fig. 6 d; Also can select different pore size according to the requirement of damping change, as shown in Fig. 6 a and Fig. 6 b;
In addition, spool the second radial hole 11-3 also can be processed with rectangle or leaf spiral chute around, as shown in Fig. 6 e and Fig. 6 f; Spiral fluted section form can be selected according to the requirement of damping change.
Fig. 5 is a kind of preferred implementation of spool, and its spool the second radial hole 11-3 adopts the setting type of Different Plane, different pore size, and Fig. 5 a is graphics, and Fig. 5 b is front view, the sectional view that Fig. 5 c is front view; When this mode of execution can be realized slide block 3 down sliding, orifice size increases progressively rapidly, increases quickly the damping force of vibration damper.
The flow resistance that elongated orifices produces is larger, and more responsive to the viscosity-temperature characteristics of fluid, and Fig. 5 d is the mode of execution structural drawing that spool the second axial bore is processed into shoulder hole.
It is worthy of note, mode given here is just as a specific embodiment of the present invention, and obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiments.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment who obtains under creative work prerequisite, belong to the scope of protection of the invention.
Claims (8)
1. a high pressure oil control variable-damping shock, comprise piston rod (1), piston (9) is characterized in that: also comprise the spool (11) being connected between piston rod (1) and piston (9), be slidably connected at the slide block (3) of spool (11) outer surface and be sleeved on the sliding block spring (5) on slide block (3), be arranged on the circulation valve block (7) on piston (9), described slide block (3) inner upper end face is spacing by piston rod (1), and align with piston rod end annular chamber (1-2), sliding block spring (5) bottom with pretightening force withstands on the upper-end surface of the flowing valve position limit socket (6) of circulation valve block (7), sliding block spring (5) top withstands on the lower end surface, top of slide block (3), described piston rod (1) is processed with piston rod center hole (1-1) and piston rod end annular chamber (1-2), spool first axial bore (11-1) of described spool (11) upper end is aimed at piston rod center hole (1-1), and spool the first radial hole (11-2) is communicated with spool the first axial bore (11-1) and piston rod end annular chamber (1-2), spool second radial hole (11-3) of spool (11) lower end and spool the second axial bore (11-4) are communicated with upper oil cavitie (13) and lower oil cavitie (12).
2. a kind of high pressure oil control variable-damping shock according to claim 1, is characterized in that: described circulation valve block (7) is not undertaken spacing by flowing valve position limit socket (6), but directly spacing by sliding block spring (5) lower end; When slide block (3) down sliding, close spool the second radial hole (11-3) and circulation valve block (7) simultaneously.
3. a kind of high pressure oil control variable-damping shock according to claim 1, is characterized in that: the upper and lower inner side of described slide block (3) is respectively by seal ring A(2) and seal ring B(4) sealing.
4. a kind of high pressure oil control variable-damping shock according to claim 1, is characterized in that: the outer surface of described piston (9) is set with piston packing ring (8); Piston (9) upper-end surface is provided with circulation valve block (7), and for the flow of control piston through hole (9-1), piston (9) is connected by gland nut (10) and spool (11) lower end.
5. a kind of high pressure oil control variable-damping shock according to claim 1, is characterized in that: described spool (11) is integrated part with piston rod (1).
6. a kind of high pressure oil control variable-damping shock according to claim 1, it is characterized in that: spool second radial hole (11-3) of described spool (11) lower end can be more than one, but a plurality of along radially divergently arranging, the diameter in each hole is identical or select different pore size according to the requirement of damping change.
7. according to a kind of high pressure oil control variable-damping shock described in claim 1 or 6, it is characterized in that: described spool the second radial hole (11-3) is processed with rectangle or leaf spiral chute around, and spiral fluted section form is selected according to the requirement of damping change.
8. a kind of high pressure oil control variable-damping shock according to claim 1, is characterized in that: described spool the second axial bore (11-4) is processed into shoulder hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320533263.XU CN203532608U (en) | 2013-08-30 | 2013-08-30 | Variable damping shock absorber controlled through high-pressure oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320533263.XU CN203532608U (en) | 2013-08-30 | 2013-08-30 | Variable damping shock absorber controlled through high-pressure oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203532608U true CN203532608U (en) | 2014-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320533263.XU Withdrawn - After Issue CN203532608U (en) | 2013-08-30 | 2013-08-30 | Variable damping shock absorber controlled through high-pressure oil |
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| CN (1) | CN203532608U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104421371A (en) * | 2013-08-30 | 2015-03-18 | 长春孔辉汽车科技有限公司 | High-pressure oil-control variable damping absorber |
| CN113611195A (en) * | 2021-08-10 | 2021-11-05 | 合肥工业大学 | Dynamic vibration reduction experimental device and experimental method |
-
2013
- 2013-08-30 CN CN201320533263.XU patent/CN203532608U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104421371A (en) * | 2013-08-30 | 2015-03-18 | 长春孔辉汽车科技有限公司 | High-pressure oil-control variable damping absorber |
| CN104421371B (en) * | 2013-08-30 | 2016-09-07 | 长春孔辉汽车科技股份有限公司 | Hydraulic oil control variable-damping shock |
| CN113611195A (en) * | 2021-08-10 | 2021-11-05 | 合肥工业大学 | Dynamic vibration reduction experimental device and experimental method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHANGCHUN KONGHUI AUTOMATIVE TECHNOLOGY CO., LTD. Free format text: FORMER NAME: KH AUTOMOTIVE TECHNOLOGIES (CHANGCHUN) CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 130012 Jilin province Changchun Chaoda high tech Industrial Development Zone, Road No. 5177 Patentee after: Changchun Konghui Automative Technology Co., Ltd. Address before: 130012 Jilin province Changchun Chaoda high tech Industrial Development Zone, Road No. 5177 Patentee before: KH Automotive Technologies (Changchun) Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140409 Effective date of abandoning: 20160907 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |