CN203067643U - Piston rod of damper - Google Patents
Piston rod of damper Download PDFInfo
- Publication number
- CN203067643U CN203067643U CN 201220564909 CN201220564909U CN203067643U CN 203067643 U CN203067643 U CN 203067643U CN 201220564909 CN201220564909 CN 201220564909 CN 201220564909 U CN201220564909 U CN 201220564909U CN 203067643 U CN203067643 U CN 203067643U
- Authority
- CN
- China
- Prior art keywords
- piston rod
- damper
- piston
- base
- rod base
- 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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- Fluid-Damping Devices (AREA)
Abstract
The utility model relates to a piston rod of a damper. The piston rod of the damper is used for solving the problem that early-stage fatigue fracture failures appear in existing piston rods of the dampers. The piston rod of the damper comprises a piston rod body and a piston rod base. The piston rod body and the piston rod base are connected into a whole. A transition circular angle is arranged at the connecting position of the piston rod body and the piston rod base. The semi diameter R of the transition circular angle is 4-6 mm. According to the piston rod of the damper, the early-stage fatigue fracture failures in the existing piston rods of the dampers can be avoided, and the service life of the piston rod of the damper is prolonged.
Description
Technical field
The utility model relates to vehicle shock absorber, relates to a kind of piston lever of reducer specifically.
Background technique
For relaxing the shock and vibration that are subjected to because road is uneven in the process of moving with decay, guarantee stationarity, operational stability and the travelling comfort of driving, improve component working life, generally be provided with dampening arrangement on the vehicle, it is the important component part of vehicle damping system.Vibration damper has polytype, and wherein the use of hydraulic damper is comparatively general.
The working principle of hydraulic damper is when relative movement occurring when vibrations between vehicle frame (or vehicle body) and vehicle bridge, the piston of vibration damper moves up and down, fluid in the vibration damper chamber flows in another chamber through different holes from a chamber repeatedly, friction formed damping force to vibrations in the friction that this moment, hole wall and fluid were seen and fluid were intermolecular, make thump can be converted into fluid heat energy, be dispersed in the atmosphere by vibration damper again, reach the effect of damping.
Yet the inefficacy of vibration damper important spare part can cause the vehicle damping systemic-function to descend or forfeiture.In hydraulic damper, piston rod bears drawing-the compressive load effect of alternation because of damping force, therefore belongs to tired easily damaged parts.In shock absorber design, generally all can carry out the Calculation of Fatigue Strength of piston rod, when owing to the variety of problems in manufacturing and the use, often cause the early fatigue fracture of piston rod to lose efficacy.
The model utility content
The problem that the utility model lost efficacy at existing piston lever of reducer early fatigue fracture, and a kind of piston lever of reducer is provided,
The appearance that can effectively avoid the piston rod early fatigue fracture to lose efficacy, the working life of improving piston rod.
For addressing the above problem, the technological scheme that the utility model adopts is as follows:
A kind of piston lever of reducer, comprise piston rod shaft and piston rod base, it is characterized in that: described piston rod shaft and piston rod base are an integral body, and described piston rod shaft and piston rod base joint are provided with knuckle, and described knuckle radius R is 4-6mm.
Preferably, described knuckle radius is 5mm.
Compared with prior art, the utlity model has following beneficial effect:
One, piston lever of reducer of the present utility model, comprise piston rod shaft and piston rod base, piston rod shaft and piston rod base are an overall structure, be provided with knuckle at piston rod shaft and piston rod base joint, reduced the stress of piston rod shaft and piston rod base joint, the appearance of avoiding the piston rod early fatigue fracture to lose efficacy, the working life of improving piston rod.
Two, the radius of knuckle of the present utility model is 5mm, the results showed, can keep the intensity of piston rod, can reduce the stress of piston rod shaft and piston rod base joint again to greatest extent, improves the working life of piston rod.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Mark among the figure: 1 is the piston rod shaft, and 2 is the piston rod base, and 3 is knuckle.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Our experiments show that the early fatigue fracture of vehicle shock absorber piston rod lost efficacy and appears at the joint of piston rod shaft and piston rod base, the utility model improves the existing piston bar by stress analysis is carried out in fracture place.
In conjunction with Fig. 1, the utility model comprises piston rod shaft 1 and piston rod base 2, and piston rod shaft 1 and piston rod base 2 are an integral body, and piston rod shaft 1 is provided with knuckle 3 with piston rod base 2 joints.
According to the stress analysis structure, when the piston rod root did not have knuckle, piston rod shaft 1 was 780MPa with the maximum axial stress of piston rod base 2 joints; When being processed with the knuckle of R5, piston rod shaft 1 is 497MPa with the maximum axial stress of piston rod base 2 joints, and stress concentration factor is reduced to 1.67 by 2.62.Greatly reduce the stress of piston rod 1 and piston rod base 2 joints, thereby improve the working life of piston rod.
Piston rod material of the present utility model is 40Cr, and through quenching with Subsequent tempering, heat treatment process is 850-86 ℃ of oil quenchings, 420-440 ℃ of tempering.
Claims (2)
1. piston lever of reducer, comprise piston rod shaft (1) and piston rod base (2), it is characterized in that: described piston rod shaft (1) and piston rod base (2) are an integral body, described piston rod shaft (1) is provided with knuckle (3) with piston rod base (2) joint, and described knuckle (3) radius R is 4-6mm.
2. piston lever of reducer according to claim 1, it is characterized in that: described knuckle (3) radius is 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220564909 CN203067643U (en) | 2012-10-31 | 2012-10-31 | Piston rod of damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220564909 CN203067643U (en) | 2012-10-31 | 2012-10-31 | Piston rod of damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203067643U true CN203067643U (en) | 2013-07-17 |
Family
ID=48766430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220564909 Expired - Fee Related CN203067643U (en) | 2012-10-31 | 2012-10-31 | Piston rod of damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203067643U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112069624A (en) * | 2020-09-09 | 2020-12-11 | 克拉玛依市高精石油机械有限公司 | Simulation optimization method for transition fillet of piston rod of reciprocating compressor of gas storage |
-
2012
- 2012-10-31 CN CN 201220564909 patent/CN203067643U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112069624A (en) * | 2020-09-09 | 2020-12-11 | 克拉玛依市高精石油机械有限公司 | Simulation optimization method for transition fillet of piston rod of reciprocating compressor of gas storage |
| CN112069624B (en) * | 2020-09-09 | 2024-05-31 | 克拉玛依市高精石油机械有限公司 | Piston rod transition fillet simulation optimization method for reciprocating compressor of gas storage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20141031 |
|
| EXPY | Termination of patent right or utility model |