CN2553184Y - Agricultural vehicle front vibration damper - Google Patents
Agricultural vehicle front vibration damper Download PDFInfo
- Publication number
- CN2553184Y CN2553184Y CN 02267744 CN02267744U CN2553184Y CN 2553184 Y CN2553184 Y CN 2553184Y CN 02267744 CN02267744 CN 02267744 CN 02267744 U CN02267744 U CN 02267744U CN 2553184 Y CN2553184 Y CN 2553184Y
- Authority
- CN
- China
- Prior art keywords
- oil
- guide sleeve
- bumper post
- oil cylinder
- hydraulic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Vibration Prevention Devices (AREA)
Abstract
The utility model provides a front shock absorber of a farm truck, which comprises a cushion pillar, wherein, a seal sleeve is sleeved on the lower segment of the cushion pillar and in a downwards-extended cylinder; hydraulic pressure oil is filled in an intra-cavity of the cylinder; an oil seal, an upper guide sleeve, a spacer sleeve and a lower guide sleeve are sleeved between the cushion pillar and the cylinder in turn; the lower end of the cylinder is seal-jointed with a joint fork; an auxiliary vibration damping spring and a hydraulic pressure damper are sleeved in the intra-cavity of the cushion pillar from top to down; a gap is remained between the upper end of the auxiliary vibration damping spring and the top part of the cushion pillar; the lower end of the auxiliary vibration damping spring is positioned on the hydraulic pressure damper; a main vibration damping spring is fixedly sleeved on the cushion pillar and the cylinder. The good vibration damping and hydraulic pressure damping performances are remained no matter whether the farm truck is loaded with goods, and simultaneously the hydraulic pressure oil between the upper guide sleeve and the lower guide sleeve is not pressed, and the oil seal is not under the pressure from the hydraulic pressure oil. The utility model has the advantages of long service life of the oil seal, no oil leakage of the long used shock absorber, and applicability for the motorcycle.
Description
Technical field
The utility model relates to the vibration damping equipment of agricultural vehicle.
Background technique
At present, the vibration damper of agricultural vehicle, comprise bumper post, stuffing box gland is contained in the oil cylinder on the bumper post, be fixed on the following guide sleeve on the bumper post and be fixed on the in-oil cylinder guide sleeve of going up, be fixed in the spring on bumper post and the oil cylinder, be set with oil sealing between bumper post and the oil cylinder, in the inner chamber of oil cylinder hydraulic oil is housed.This general vibration damper, its deficiency is: be to produce hydraulic damping power by the hydraulic oil that compresses between the upper and lower guide sleeve when 1, vibration damper restores, and the vibration damper compression time mainly is by spring damping, only produce very little hydraulic damping, simultaneously generally all rigidity is higher for the damper spring of agricultural vehicle, and the severity of jolting when causing empty wagons to travel, stationarity are poor; 2, because oil sealing bears the pressure that produces from the hydraulic oil between the upper and lower guide sleeve, just lost efficacy in the oil sealing short time, caused hydraulic fluid leak.
Summary of the invention
Technical problem to be solved in the utility model is: overcome the severity of jolting when the prior oscillating damper empty wagons travels, stationarity is poor, and the deficiency that hydraulic oil easily leaks, damping property was good when a kind of empty wagons or loading were provided, and was difficult for leaking vibration damper before the agricultural vehicle of hydraulic oil.
The technological scheme that its technical problem that solves the utility model adopts is: comprise bumper post, stuffing box gland is contained in the oil cylinder that the bumper post hypomere is also stretched down, in the inner chamber of oil cylinder, hydraulic oil is housed, be set with oil sealing between bumper post and the oil cylinder successively, last guide sleeve, spacer, following guide sleeve, oil cylinder lower end and joint fork are tightly connected, its structural feature is to be set with secondary shock-absorbing spring in the inner chamber of bumper post from top to bottom, hydraulic damper, the upper end of secondary shock-absorbing spring and the inner top of bumper post leave the gap, its lower end places on the hydraulic damper, the intrinsic main shock-absorbing spring of cover on bumper post and the oil cylinder.
As to improvement of the present utility model, described hydraulic damper is a trunk piston formula dydraulic shock absorber, the piston rod of this hydraulic damper passes through the top fixed seal connection of described secondary shock-absorbing spring, its top and bumper post, and the lower end of hydraulic damper is fixed in the opening that joint is stuck, its underpart is provided with the turnover of confession hydraulic oil; Described upward guide sleeve, following guide sleeve all are fixed on the oil cylinder.
After adopting said structure, owing in vibration damper, be provided with major and minor shock-absorbing spring and in the bumper post inner chamber, be provided with hydraulic damper, main shock-absorbing spring is depressed, and secondary shock-absorbing spring just begins to work behind the segment distance, when therefore no matter being empty wagons or loading, all have favorable damping, hydraulic damping performance; Hydraulic oil between the upper and lower guide sleeve does not produce pressure simultaneously, and oil sealing does not bear the pressure effect from hydraulic oil, so the oil sealing long service life, and vibration damper is oil-proof for a long time.
Description of drawings
Accompanying drawing is a cross-sectional view of the present utility model.
Embodiment
Vibration damper before the agricultural vehicle shown in the drawings, comprise bumper post 3, stuffing box gland is contained in the oil cylinder 8 that bumper post 3 hypomeres are also stretched down, in the inner chamber of oil cylinder 8, hydraulic oil is housed, be set with dust ring successively between bumper post 3 and the oil cylinder 8, oil sealing 4, last guide sleeve 5, spacer 6, following guide sleeve 7, the intrinsic main shock-absorbing spring 1 of cover on bumper post 3 and the oil cylinder 8, oil cylinder 8 lower ends and joint fork 10 are tightly connected, last guide sleeve 5, following guide sleeve 7 is fixed on the oil cylinder 8 in any known mode, in the inner chamber of bumper post 3, be set with secondary shock-absorbing spring 2 from top to bottom, hydraulic damper 9, leave the gap between the upper end of secondary shock-absorbing spring 2 and the inner top of bumper post 3, its lower end places on the hydraulic damper 9, secondary shock-absorbing spring 2 just begins to work after main shock-absorbing spring 1 is depressed a segment distance like this, to guarantee when empty wagons moves, having only main shock-absorbing spring 1 to work, and master during loading, secondary shock-absorbing spring works simultaneously, therefore main, it is very high that the rigidity of secondary shock-absorbing spring need not to design, and vehicle operating is steady; Hydraulic damper 9 is a trunk piston formula dydraulic shock absorber, the piston rod 11 of this hydraulic damper 9 passes through described secondary shock-absorbing spring 2, the top fixed seal connection of its top and bumper post 3, the lower end of hydraulic damper 9 is fixed on the joint fork 10, its underpart is provided with the opening for the hydraulic oil turnover, hydraulic oil and oil cylinder 8 interior hydraulic oil in the hydraulic damper 9 are connected, enter like this, hydraulic oil between the following guide sleeve does not produce pressure, oil sealing does not bear the pressure effect from hydraulic oil, so oil sealing long service life, vibration damper is oil-proof for a long time, when vibration damper is flexible before this agricultural vehicle simultaneously, hydraulic damper 9 produces damping force always, further improves the vibration damping of vibration damper, the hydraulic damping performance.The vibration damper of this structure is applicable on motorcycle simultaneously and uses.
Claims (3)
1, vibration damper before a kind of agricultural vehicle, comprise bumper post (3), stuffing box gland is contained in the oil cylinder (8) that bumper post (3) hypomere is also stretched down, in the inner chamber of oil cylinder (8), hydraulic oil is housed, be set with oil sealing (4) successively between bumper post (3) and the oil cylinder (8), last guide sleeve (5), spacer (6), following guide sleeve (7), oil cylinder (8) lower end and joint fork (10) are tightly connected, it is characterized in that in the inner chamber of bumper post (3), being set with secondary shock-absorbing spring (2) from top to bottom, hydraulic damper (9), the upper end of secondary shock-absorbing spring (2) and the inner top of bumper post (3) leave the gap, its lower end places on the hydraulic damper (9), and bumper post (3) and oil cylinder (8) are gone up cover intrinsic main shock-absorbing spring (1).
2, vibration damper before the agricultural vehicle according to claim 1, it is characterized in that described hydraulic damper (9) is a trunk piston formula dydraulic shock absorber, the piston rod (11) of this hydraulic damper (9) passes through the top fixed seal connection of described secondary shock-absorbing spring (2), its top and bumper post (3), and the lower end of hydraulic damper (9) is fixed in the opening that joint fork (10) is last, its underpart is provided with the turnover of confession hydraulic oil.
3, vibration damper before the agricultural vehicle according to claim 1 and 2 is characterized in that described upward guide sleeve (5), following guide sleeve (7) all are fixed on the oil cylinder (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02267744 CN2553184Y (en) | 2002-06-17 | 2002-06-17 | Agricultural vehicle front vibration damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02267744 CN2553184Y (en) | 2002-06-17 | 2002-06-17 | Agricultural vehicle front vibration damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2553184Y true CN2553184Y (en) | 2003-05-28 |
Family
ID=33733280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02267744 Expired - Fee Related CN2553184Y (en) | 2002-06-17 | 2002-06-17 | Agricultural vehicle front vibration damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2553184Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103210236A (en) * | 2010-12-02 | 2013-07-17 | 东洋橡胶工业株式会社 | Air spring |
-
2002
- 2002-06-17 CN CN 02267744 patent/CN2553184Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103210236A (en) * | 2010-12-02 | 2013-07-17 | 东洋橡胶工业株式会社 | Air spring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |