CN206754039U - The unidirectional cylinder of spring brake - Google Patents
The unidirectional cylinder of spring brake Download PDFInfo
- Publication number
- CN206754039U CN206754039U CN201720417020.8U CN201720417020U CN206754039U CN 206754039 U CN206754039 U CN 206754039U CN 201720417020 U CN201720417020 U CN 201720417020U CN 206754039 U CN206754039 U CN 206754039U
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- piston rod
- oil
- piston
- circular hole
- cylinder
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Abstract
The utility model discloses a kind of unidirectional cylinder of spring brake, its drip irrigation device is：Including oil cylinder, it is stifled that oil is fixed with one end of oil cylinder, close to the stifled place of oil provided with the oil nozzle for oil-feed on the excircle of oil cylinder, piston rod is equipped with oil cylinder, spring is arranged with the piston rod, in piston rod piston is fixed with close to one end of oil nozzle, the side that piston rod is provided with oil cylinder is rod chamber, the side that oil cylinder is not provided with piston rod is rodless cavity, the one end of piston rod away from piston is fixed with, standby cap is provided between the one end of oil cylinder away from oil nozzle and piston rod, in piston rod the first circular hole is provided with close to one end of rodless cavity, the second circular hole is provided with the excircle of piston rod, first circular hole and the second circular hole communicate, so that rod chamber and rodless cavity communicate.When piston rod stretches out, sub-fraction hydraulic oil flow into rod chamber, while spring-compressed by the first circular hole and the second circular hole, serve the effect buffered during piston rod stretches out.
Description
Technical field
Hydraulic cylinder field is the utility model is related to, more particularly to a kind of unidirectional cylinder of spring brake.
Background technology
When hydraulic cylinder is run, when the piston element of driving load makees faster reciprocal motion with larger quality, have very big
Momentum.When stroke to terminal, the mechanical collision with cylinder bottom often occurs for piston, can produce very big impact noise.
It is by retrieval request number：CN200920064070.8 Chinese patent discloses a kind of hydraulic cylinder buffer, bag
Cylinder bottom is included, damping hole and oil duct are provided with cylinder bottom, the cushion chamber for buffering is additionally provided with cylinder bottom, is provided with cushion chamber slow
Extrusion post and spring, spring upper end are connected with damping plug, and when the piston rod of hydraulic cylinder stretches out, sub-fraction hydraulic oil is through damping plug
Into in cushion chamber by buffer plunger to pushing out, when piston back moves, compression spring and cushion plugs post, make piston close
Slowed during cylinder bottom and play cushioning effect, but there is no buffer gear to delay piston rod during piston rod stretches out
Punching.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of spring brake unidirectional cylinder, can
To improve buffering effect of the piston rod when stretching out.
Above-mentioned technical purpose of the present utility model technical scheme is that：A kind of spring brake is unidirectional
Cylinder, including oil cylinder, oil is fixed with one end of oil cylinder and is blocked up, close to the stifled place of oil provided with the oil for oil-feed on the excircle of oil cylinder
Mouth, piston rod is equipped with oil cylinder, is arranged with spring on the piston rod, work is fixed with close to one end of oil nozzle in piston rod
Plug, the side that piston rod is provided with oil cylinder is rod chamber, and the side that oil cylinder is not provided with piston rod is rodless cavity, and piston rod is remote
One end of piston is fixed with, and standby cap is provided between the one end of oil cylinder away from oil nozzle and piston rod, in piston rod close to nothing
One end of rod cavity is provided with the first circular hole, and the second circular hole is provided with the excircle of piston rod, and the first circular hole and the second circular hole communicate,
So that rod chamber and rodless cavity communicate.
Pass through above-mentioned technical proposal, during work, piston rod stretches out, and most of oil enters rodless cavity to drive piston rod
Motion, part oil flow into rod chamber by the first circular hole and the second circular hole, so as to serve the effect for reducing piston rod speed,
And during piston rod stretches out, spring compression on the piston rod is arranged, piston rod is enhanced and delays during stretching
The effect of punching.
Preferably, it is provided with piston and piston rod for the 3rd circular hole through piston and piston rod, in the 3rd circular hole
Provided with elastic cylindrical pin.
Pass through above-mentioned technical proposal, due to needing to be fitted close between piston rod and piston, so typically with straight pin come
Fastening, but because the accuracy requirement in processing hole matched required for straight pin is high, if the machining accuracy in processing hole is not high,
Cooperation between straight pin and processing hole has gap, and so as to influence the motion of piston and piston rod, and elastic cylindrical pin is to needing
The requirement on machining accuracy in the processing hole for the cooperation wanted is not high, while the reaction force of elastic cylindrical pin after contractions can allow bullet
Property straight pin and the 3rd circular hole be fitted close, serve fastening piston and piston rod effect.
Preferably, the 3rd circular hole and the first circular hole are connected.
Pass through above-mentioned technical proposal, hydraulic oil is flowed by rodless cavity toward rod chamber during work, when flowing to the first circular hole
Because the first circular hole and the 3rd circular hole communicate, so a part of hydraulic oil has flowed to the elastic cylinder of the 3rd circular hole and the 3rd circular hole
In pin, so as to reduce the hydraulic oil in rodless cavity, the movement velocity of piston rod is reduced, serves the effect of buffering.
Preferably, it is arranged with guide ring on the excircle of piston.
Pass through above-mentioned technical proposal, a guide ring is arranged on piston, piston can be guided to move along a straight line, prevents from living
Plug wanders off caused by unbalance stress, so as to cause the phenomenon of interior leakage to occur, and reduces seal durability.
Preferably, annular groove is provided with the excircle of piston rod, is additionally provided with the inner ring surface of piston recessed with annular
The projection that groove is engaged.
Pass through above-mentioned technical proposal, during piston moves together with piston rod, piston both sides can be rushed
Hit, open up annular groove on the piston rod and be engaged with the projection on piston, serve the effect of limiting piston bar, and
Increase lifting surface area of the piston in motion process.
Preferably, it is provided with close to one end of piston and piston diameter identical rubber ring oil is stifled.
Pass through above-mentioned technical proposal, block provided with rubber ring in oil, first touched during piston back moves
Rubber ring, rubber ring is compressed, serve the effect of buffering.
Preferably, between oil cylinder and standby cap it is threaded connection.
Pass through above-mentioned technical proposal, the dismounting and replacing of standby cap are facilitated between oil cylinder and standby cap with threaded connection, also side
The dismounting of oil cylinder and the replacing of part in oil cylinder.
Beneficial effect is the technical program compared with prior art：The technical program is by the way that the hydraulic oil of rodless cavity is passed through
First circular hole, the second circular hole are flowed into rod chamber to reduce the amount of hydraulic oil in rodless cavity, so as to reduce piston movement speed
The effect of buffering is played, and piston rod stretches out, and compression is set in the spring on piston rod to play the effect of increase buffering, when
During piston back moves, rubber ring that compressed oil blocks plays a part of buffering.
Brief description of the drawings
Fig. 1 is the complete section schematic diagram of the unidirectional cylinder of spring brake；
Fig. 2 is the enlarged drawing of A in Fig. 1；
Fig. 3 is the schematic diagram of piston rod.
Reference：1st, oil cylinder；2nd, oil is stifled；3rd, oil nozzle；4th, piston rod；5th, spring；6th, piston；7th, rodless cavity；8th, take over a business；
9th, standby cap；10th, the first circular hole；11st, the second circular hole；12nd, the 3rd circular hole；13rd, elastic cylindrical pin；14th, guide ring；15th, annular is recessed
Groove；16th, it is raised；17th, rubber ring；18th, hexagonal socket head plug；19th, bonded washer；20th, O-ring gasket；21st, sealing ring；22nd, it is dust-proof
Circle；23rd, rod chamber.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
The unidirectional cylinder of spring brake as shown in Figure 1, including oil cylinder 1, one is welded with the upper left corner of oil cylinder 1 and is used for oil-feed
Oil nozzle 3, a circular bonded washer 19 for being used for preventing oil leak, on oil nozzle 3, bonded washer are arranged with oil nozzle 3
19 are fixedly arranged above a hexagonal socket head plug for blocking oil nozzle 3 18.
The oil stifled 2 for preventing oil leak is welded with the left side of oil cylinder 1, one is equipped with oil cylinder 1 to come
Dynamic piston rod 4 is backhauled, is referred to as rod chamber 23 so as to which oil cylinder 1 to be provided with to the side of piston rod 4, oil cylinder 1 is not provided with piston rod 4
Side is referred to as rodless cavity 7.A spring 5 for being used to during the stretching of piston rod 4 enter row buffering is arranged with piston rod 4,
In the left end face of piston rod 4 first circular hole 10, the excircle in piston rod 4 close to end face are provided with along horizontal axis direction
On be provided with one and the second circular hole 11 that the first circular hole 10 communicates, the first circular hole 10 and the second circular hole 11 are connected to the He of rod chamber 23
Rodless cavity 7.It is provided with piston rod 4 and piston 6 for the 3rd circular hole 12 through piston rod 4 and piston 6, the He of the 3rd circular hole 12
First circular hole 10 is connected, and the interpolation of the 3rd circular hole 12 has the elastic cylindrical pin 13 for fastening piston 6 and piston rod 4.On piston 6
The top of 3rd circular hole 12 is provided with a guide ring 14 to be moved along a straight line for guiding piston 6 to do for 6 one weeks around piston.In piston 6
Left end be provided with a rubber ring 17 when piston rod 4 retracts for buffering.With reference to Fig. 2 and Fig. 3, in the right-hand member of piston 6
There are circular protrusions 16 within one week around 6 inner ring surface of piston, annular groove 15, annular groove are provided with 4 one weeks around piston rod on piston rod 4
15 and raised 16 are engaged.
A standby cap 9 for being used to fasten oil cylinder 1 and piston rod 4 is provided with the right-hand member of oil cylinder 1, piston rod 4 is through at standby cap 9,
Standby cap 9 is threadedly connected on oil cylinder 1, and the O-ring gasket 20 for sealed cylinder 1 is embedded with left side in the left end of standby cap 9.
A dust ring 22 is embedded with the inwall that the right-hand member of standby cap 9 is connected with piston rod 4, away from dust ring 22 on the inwall of standby cap 9
It is additionally provided with sealing ring 21.Two notches for facilitating worker to dismantle also are provided with the circumference of the outer end of standby cap 9.On the right side of piston rod 4
One is welded with end face and takes over a business 8.
It is the motion process of the unidirectional cylinder of spring brake below：
When hydraulic oil enters rodless cavity 7 by oil nozzle 3, band piston 6 and piston rod 4 do reciprocal stretching contractile motion, when
While hydraulic oil enters rodless cavity 7, sub-fraction hydraulic oil has been sent to by hydraulic oil by the first circular hole 10, the second circular hole 11
Rod cavity 23, also sub-fraction are entered in the 3rd circular hole 12, so as to reduce the movement velocity of piston rod 4, while in piston
Spring 5 compresses when bar 4 stretches out, so as to reach buffering effect of the piston rod 4 during stretching；Work as the He of piston 6 simultaneously
When piston rod 4 retracts, piston 6 first touches rubber ring 17 and compresses rubber ring 17, is risen in the back off procedure of piston 6
The effect of buffering is arrived.
Described above is only exemplary embodiment of the present utility model, not for limitation protection model of the present utility model
Enclose, the scope of protection of the utility model is determined by appended claim.
Claims (7)
1. a kind of unidirectional cylinder of spring brake, including oil cylinder (1), oil is fixed with one end of oil cylinder (1) and blocks up (2), in oil cylinder (1)
The oil nozzle (3) for oil-feed is provided with close to stifled (2) place of oil on excircle, piston rod (4) is equipped with oil cylinder (1), in piston
Spring (5) is arranged with bar (4), piston (6) is fixed with close to one end of oil nozzle (3) in piston rod (4), is provided with oil cylinder (1)
The side of piston rod (4) is rod chamber (23), and the side that oil cylinder (1) is not provided with piston rod (4) is rodless cavity (7), piston rod (4)
One end away from piston (6) is fixed with (8), is provided between the one end of oil cylinder (1) away from oil nozzle (3) and piston rod (4)
Standby cap (9), it is characterized in that：The first circular hole (10) is provided with close to one end of rodless cavity (7) in piston rod (4), in piston rod (4)
The second circular hole (11) is provided with excircle, the first circular hole (10) and the second circular hole (11) communicate so that rod chamber (23) and without bar
Chamber (7) communicates.
2. the unidirectional cylinder of spring brake according to claim 1, it is characterized in that：Use is provided with piston (6) and piston rod (4)
In insertion piston (6) and the 3rd circular hole (12) of piston rod (4), the 3rd circular hole (12) is interior to be provided with elastic cylindrical pin (13).
3. the unidirectional cylinder of spring brake according to claim 2, it is characterized in that：3rd circular hole (12) and the first circular hole (10) phase
Connection.
4. the unidirectional cylinder of spring brake according to claim 1, it is characterized in that：It is provided with and is oriented on the excircle of piston (6)
Ring (14).
5. the unidirectional cylinder of spring brake according to claim 1, it is characterized in that：Ring is provided with the excircle of piston rod (4)
Connected in star (15), the projection (16) being engaged with annular groove (15) is additionally provided with the inner ring surface of piston (6).
6. the unidirectional cylinder of spring brake according to claim 1, it is characterized in that：Set in oil stifled (2) close to one end of piston (6)
There is rubber ring (17).
7. the unidirectional cylinder of spring brake according to claim 1, it is characterized in that：It is that screw thread connects between oil cylinder (1) and standby cap (9)
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720417020.8U CN206754039U (en) | 2017-04-20 | 2017-04-20 | The unidirectional cylinder of spring brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720417020.8U CN206754039U (en) | 2017-04-20 | 2017-04-20 | The unidirectional cylinder of spring brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206754039U true CN206754039U (en) | 2017-12-15 |
Family
ID=60614412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720417020.8U Active CN206754039U (en) | 2017-04-20 | 2017-04-20 | The unidirectional cylinder of spring brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206754039U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757636A (en) * | 2018-09-10 | 2018-11-06 | 江阴市洪腾机械有限公司 | A kind of plunger piston fluid pressure cylinder of intermediate position oil inlet |
-
2017
- 2017-04-20 CN CN201720417020.8U patent/CN206754039U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757636A (en) * | 2018-09-10 | 2018-11-06 | 江阴市洪腾机械有限公司 | A kind of plunger piston fluid pressure cylinder of intermediate position oil inlet |
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