CN206458760U - A kind of buffer plunger structure - Google Patents
A kind of buffer plunger structure Download PDFInfo
- Publication number
- CN206458760U CN206458760U CN201621458442.1U CN201621458442U CN206458760U CN 206458760 U CN206458760 U CN 206458760U CN 201621458442 U CN201621458442 U CN 201621458442U CN 206458760 U CN206458760 U CN 206458760U
- Authority
- CN
- China
- Prior art keywords
- buffer plunger
- buffer
- flow area
- buffering
- plunger body
- 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
Links
- 239000000872 buffer Substances 0.000 title claims abstract description 54
- 230000003139 buffering effect Effects 0.000 claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 239000006173 Good's buffer Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Abstract
The utility model provides a kind of buffer plunger structure, including buffer plunger body, and the buffering end both sides of buffer plunger body are provided with multiple throttle orifices, and by buffer plunger body head end to tail end, the flow area of the throttle orifice is less and less.Starting stage, buffer plunger is introduced into cylinder bottom distribution, and the flow area of system is uninfluenced；As buffer plunger steps into cylinder bottom distribution, cylinder bottom distribution can be blocked by buffer plunger, and can only be through-flow by the aperture arranged on buffer plunger, and can be reduced successively with going deep into for buffer plunger with through-flow aperture, the flow area of system is then reduced in gradient, so as to realize the throttling buffering of terraced drop formula.The utility model band ladder drop formula throttle orifice, flow area can in gradient reduce with the progress of cushion stroke, to realize the purpose of throttling buffering, with instantaneous peak value pressure is low, the stable advantage of buffering course；Apparatus structure is simple, and cost is low, dependable performance, easy to use, it is easy to regulation and maintenance.
Description
Technical field
The utility model is related to a kind of buffer plunger structure, more particularly to a kind of terraced drop formula throttle orifice of band buffer plunger knot
Structure, belongs to hydropneumatics field.
Background technology
Buffer structure is typically employed in high-speed cruising and the larger hydraulic cylinder of the dynamic inertia of load or cylinder, for alleviating work
The kinetic energy of load is gradated as hydraulic energy, then slowly released to impact during stroke two ends by plug operation in cushion stroke
Put, to reach the stable purpose of system operation.
Buffer plunger is arranged on rodless cavity side in hydraulic cylinder or cylinder (cylinder bottom side), coordinates with spill port in cylinder bottom,
To realize the effect of throttling buffering.
Existing buffer plunger is complicated, and processing technology is various, and cost is high, and uses and install trouble, is not easy to dimension
Section is trimmed, while the effect of throttling buffering also has much room for improvement.
Utility model content
The technical problems to be solved in the utility model be to provide it is a kind of it is simple in construction, easy to use, can easily be accommodated and repair
And the buffer plunger structure of good buffer effect.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is to provide a kind of buffer plunger structure, and it is special
Levy and be：Including buffer plunger body, the buffering end both sides of buffer plunger body are provided with multiple throttle orifices, and by buffer plunger sheet
The head end of body is to tail end, and the flow area of the throttle orifice is less and less.
Preferably, the tail end of the buffer plunger body is provided with the U-lag for being used for installing steel ball.
Preferably, the U-lag of the buffer plunger body tail end is corresponding with the R groove locations in piston rod distribution, described
Provided with a circle steel ball between R grooves in the U-lag and piston rod distribution of buffer plunger body tail end, auxiliary connection is formed.
Preferably, nylon stopper is filled at the load hole of the steel ball.
Preferably, piston blocks the load hole of the steel ball after being screwed with piston rod thread.
Starting stage, buffer plunger is introduced into cylinder bottom distribution, and the flow area of system is uninfluenced；With buffer plunger by
Stepping enters cylinder bottom distribution, and cylinder bottom distribution can be blocked by buffer plunger, and can only be through-flow by the aperture arranged on buffer plunger, and
It can be reduced successively with going deep into for buffer plunger with through-flow aperture, the flow area of system is then reduced in gradient, so that
Realize the throttling buffering of terraced drop formula.
The device that the utility model is provided overcomes the deficiencies in the prior art, the terraced drop formula throttle orifice of band, and flow area can be with
Reduce in gradient with the progress of cushion stroke, to realize the purpose of throttling buffering, with instantaneous peak value pressure is low, buffering course is put down
Steady advantage；Apparatus structure is simple, and cost is low, dependable performance, easy to use, it is easy to regulation and maintenance.
Brief description of the drawings
The buffer plunger structural representation that Fig. 1 provides for the present embodiment；
Fig. 2 is buffer plunger structure scheme of installation；
Fig. 3 illustrates for buffering course；(a) cushion stroke is initial；(b) in the middle of cushion stroke；(c) cushion stroke terminates；
Fig. 4 is cushion stroke flow area ladder drop schematic diagram；
Fig. 5 is cushion stroke rodless cavity pressure-time curve figure.
Embodiment
With reference to specific embodiment, the utility model is expanded on further.It should be understood that these embodiments are merely to illustrate this
Utility model rather than limitation scope of the present utility model.In addition, it is to be understood that reading the content of the utility model instruction
Afterwards, those skilled in the art can make various changes or modifications to the utility model, and these equivalent form of values equally fall within this Shen
Please appended claims limited range.
By taking the buffer plunger of 6T bucket rod cylinder of excavator cylinder bottoms side as an example, it is described as follows：
As shown in figure 1, at the buffering end of buffer plunger body, being arranged with A1, A2, A3, B1, B2, B3 totally 6 apertures, A holes
Diameter of phi 3mm, B bore dia Φ 1.5mm.
As shown in Fig. 2 buffer plunger 5 is arranged in the distribution of the tail end of piston rod 1, the U-lag of the tail end of buffer plunger 5 and work
Load one between R grooves in stopper rod distribution and enclose steel ball 4, form auxiliary connection；Nylon stopper 3 is filled at the load hole of steel ball 4, is then lived
Plug 2 can block the load hole of steel ball 4 after being screwed with the screw thread of piston rod 1.This connected mode can make plunger while ensureing firm
Slightly it can swing and slide back and forth, plunger and cylinder bottom distribution eccentric wear are caused to eliminate hydraulic cylinder overall operation coaxiality error,
Can faster it be responded when backhaul is buffered.
As shown in Figure 3 (piston rod is not drawn into piston), starting stage, buffer plunger is introduced into cylinder bottom distribution, system
Flow area is uninfluenced；As buffer plunger steps into cylinder bottom distribution, cylinder bottom distribution can be blocked that (gap is very by buffer plunger
Small circumferential weld flow area is ignored herein), and can only be through-flow by the aperture arranged on buffer plunger, and can be with through-flow
Aperture can successively be reduced with going deep into for buffer plunger, and the flow area of system is then reduced in gradient, as shown in figure 4, so as to
Realize the throttling buffering of terraced drop formula.
The bucket arm cylinder rodless cavity cushion stroke pressure-time curve that Fig. 5 measures for experiment, buffers maximum pressure
22.5MPa, buffer time 0.48s, buffering course complete machine is steadily without exception.
Experiment shows that the buffer plunger structure that the present embodiment is provided has the effect of good throttling buffering.
Claims (5)
1. a kind of buffer plunger structure, it is characterised in that：Including buffer plunger body, the buffering end both sides of buffer plunger body are set
Have multiple throttle orifices, and by buffer plunger body head end to tail end, the flow area of the throttle orifice is less and less.
2. a kind of buffer plunger structure as claimed in claim 1, it is characterised in that：The tail end of the buffer plunger body is provided with
U-lag for installing steel ball.
3. a kind of buffer plunger structure as claimed in claim 1, it is characterised in that：The U-shaped of the buffer plunger body tail end
Groove is corresponding with the R groove locations in piston rod distribution, the R in the U-lag and piston rod distribution of the buffer plunger body tail end
Provided with a circle steel ball between groove, auxiliary connection is formed.
4. a kind of buffer plunger structure as claimed in claim 3, it is characterised in that：Nylon is filled at the load hole of the steel ball
Plug.
5. a kind of buffer plunger structure as described in claim 3 or 4, it is characterised in that：After piston is screwed with piston rod thread
Block the load hole of the steel ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621458442.1U CN206458760U (en) | 2016-12-28 | 2016-12-28 | A kind of buffer plunger structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621458442.1U CN206458760U (en) | 2016-12-28 | 2016-12-28 | A kind of buffer plunger structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206458760U true CN206458760U (en) | 2017-09-01 |
Family
ID=59697021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621458442.1U Expired - Fee Related CN206458760U (en) | 2016-12-28 | 2016-12-28 | A kind of buffer plunger structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206458760U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110822005A (en) * | 2019-11-11 | 2020-02-21 | 合肥工业大学 | Damping self-adaptive adjustment vibration reducer and automobile |
| CN111608983A (en) * | 2020-05-29 | 2020-09-01 | 徐州徐工液压件有限公司 | Adjustable detachable self-adaptive floating buffer structure |
-
2016
- 2016-12-28 CN CN201621458442.1U patent/CN206458760U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110822005A (en) * | 2019-11-11 | 2020-02-21 | 合肥工业大学 | Damping self-adaptive adjustment vibration reducer and automobile |
| CN110822005B (en) * | 2019-11-11 | 2021-07-06 | 合肥工业大学 | Damping self-adaptive adjustment vibration reducer and automobile |
| CN111608983A (en) * | 2020-05-29 | 2020-09-01 | 徐州徐工液压件有限公司 | Adjustable detachable self-adaptive floating buffer structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170901 |