CN108757626A - Low voltage starting buffer type hydraulic oil cylinder - Google Patents
Low voltage starting buffer type hydraulic oil cylinder Download PDFInfo
- Publication number
- CN108757626A CN108757626A CN201810540701.2A CN201810540701A CN108757626A CN 108757626 A CN108757626 A CN 108757626A CN 201810540701 A CN201810540701 A CN 201810540701A CN 108757626 A CN108757626 A CN 108757626A
- Authority
- CN
- China
- Prior art keywords
- rod
- piston rod
- diversion
- hole
- inner end
- 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.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/224—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston which closes off fluid outlets in the cylinder bore by its own movement
Abstract
The present invention announces a kind of low voltage starting buffer type hydraulic oil cylinder, belongs to hydraulic cylinder technical field.Including cylinder barrel, pedestal, end cap, piston rod, piston；Base center position is provided with cushion chamber, and piston rod inner end is equipped with buffering protrusion；Piston rod inner face is fixed with diversion rod；The deflector hole of cooperation opposite with diversion rod is provided on pedestal；When piston rod is retracted into bottom, diversion rod passes through deflector hole and diversion rod inner end stretching deflector hole enters fuel feed hole, and the hydraulic fluid port of diversion rod inner end is connected to fuel feed hole.The configuration of the present invention is simple, easy to process, production cost is low；With use check valve, the structure impact resistance of diversion rod is stronger, and service life is long, and maintenance cost is low.
Description
Technical field
The present invention relates to hydraulic cylinder technical field, specifically a kind of low voltage starting buffer type hydraulic oil cylinder.
Background technology
Existing hydraulic cylinder includes cylinder barrel, by the guide sleeve in cylinder barrel, piston rod and cylinder barrel with piston
The cylinder head connected firmly, cylinder barrel is interior to be equipped with rod chamber hydraulic fluid port and rodless cavity hydraulic fluid port.Cylinder barrel bottom is rushed in order to reduce when piston rod is fallen after rise
It hits, cushion chamber is equipped between piston rod end and cylinder barrel bottom.But this buffer structure is in low pressure, piston rod end stress surface
Smaller, startup speed is slower, influences working efficiency.
To solve the problems, such as quickly to start, existing patent disclosure is a kind of easily to start hydraulic cylinder（CN204284066U）.It should
Easily start hydraulic cylinder, including cylinder barrel, pass through wire ring be set to cylinder barrel in guide sleeve, the piston rod with piston, with cylinder barrel weld
The cylinder head connected firmly is connect, piston rod sliding passes through guide sleeve, is equipped with rod chamber hydraulic fluid port in cylinder barrel, set in the cylinder head at piston rear
There is rodless cavity hydraulic fluid port and connect the oil groove of rodless cavity hydraulic fluid port and inner cavity of cylinder, check valve is equipped in oil groove；On the piston rod
Equipped with step, step is close in the front end of piston, and its rear end is equipped with clamping nut；Annular groove, ring are equipped on piston rod in piston
Sealing ring is equipped in slot；When piston rod stretches out, to rodless cavity hydraulic fluid port fuel feeding, hydraulic oil is pushed check valve open simultaneously and is entered in cylinder barrel,
The startup pressure that hydraulic cylinder can be increased, also easily starts in low pressure, can improve and start speed and working efficiency；When rod chamber oil
When mouth oil inlet, piston rod recycling, closed check valve, hydraulic oil can only be flowed out from rodless cavity hydraulic fluid port, started buffering effect, avoided living
Plug generates shock, eliminates abnormal sound, elongate member service life.
Wherein the problem is that：The setting of wherein check valve causes hydraulic cylinder processing complicated, improves processing
Cost；Moreover, check valve is under this HI high impact, long-time operating mode, the service life is difficult to ensure, this will cause hydraulic cylinder to be safeguarded
Frequently, maintenance cost is high.
Invention content
In order to solve the above technical problems, the present invention provides a kind of low voltage starting buffer-type liquid simple in structure, easy to maintain
Compressing cylinder.
The invention is realized by the following technical scheme：A kind of low voltage starting buffer type hydraulic oil cylinder, including cylinder barrel, cylinder barrel two
End is respectively fixed with pedestal, end cap；Piston rod is installed in the cylinder barrel, centre bore is provided on end cap, piston rod slides through
End cap；The piston rod inner end is connected with piston；The piston is slidably mounted in cylinder barrel；The base center position is provided with slow
Chamber is rushed, the piston rod inner end is equipped with the buffering protrusion coordinated with cushion chamber；It is provided on the pedestal and is connected to cushion chamber bottom
Fuel feed hole, cylinder barrel front end is provided with oil return hole；The piston rod inner face marginal position is fixed with multiple equal around piston rod axle center
The diversion rod of cloth；The deflector hole of cooperation opposite with diversion rod is provided on the pedestal, deflector hole is connected to fuel feed hole；It is described to lead
Flow post is gap-matched with deflector hole；Diversion rod center is provided with oil duct, and hydraulic fluid port, water conservancy diversion are provided on the side wall at diversion rod both ends
The inner end of bar seals；When piston rod is retracted into bottom, diversion rod pass through deflector hole and diversion rod inner end stretch out deflector hole enter into
The hydraulic fluid port of oilhole, diversion rod inner end is connected to fuel feed hole.
Preferably：The inner end positions of the piston rod periphery are provided with uniformly distributed deep gouge, and fixed block is embedded in deep gouge；
The fixed block is fixedly connected by screw with piston rod；The diversion rod is mounted on fixed block.
Preferably：Installation through-hole is provided on the fixed block, the inner end of installation through-hole is provided with step seam allowance；The diversion rod
End is equipped with the shelves platform coordinated with the step seam allowance seam allowance.
Preferably：There are four the diversion rod is total.
When piston rod is fallen after rise：
When buffering protrusion has just enter into cushion chamber, meanwhile, water conservancy diversion boom end enters deflector hole, since diversion rod end seals,
So at this point, deflector hole is off state, buffering protrusion, cushion chamber, which cooperate, completes buffering；Buffering protrusion is completely into slow
When rushing chamber, diversion rod inner end stretches out deflector hole and enters fuel feed hole, and the hydraulic fluid port of diversion rod inner end is connected to fuel feed hole；
In the final stage of buffering, deflector hole is connected state, although this can influence buffering protrusion, the cushioning effect of cushion chamber,
But at this moment the speed of piston rod has been reduced to very low, therefore is influenced on buffering effect little；
When piston rod stretches out：
First oil circuit be：The high pressure oil of fuel feed hole enters cushion chamber, jacks up buffering protrusion；
Article 2 oil circuit is：The high pressure oil of fuel feed hole enters piston end surface by hydraulic fluid port, the oil duct in diversion rod, expands piston
Bar accepts face, improves and starts pressure；
After start-up, diversion rod progresses into deflector hole, and Article 2 oil circuit progressively closes off；But at this moment, piston rod has been started up,
Gap between buffering protrusion and cushion chamber is larger, and high pressure oil can be smoothly between buffering protrusion and cushion chamber
Enter piston end surface.
Compared with prior art, the beneficial effects of the invention are as follows：Simple in structure, easy to process, production cost is low；With use
The structure impact resistance of check valve, diversion rod is stronger, and service life is long, and maintenance cost is low.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the enlarged drawing at A in Fig. 1；
Fig. 3 is A-A direction views in Fig. 1.
In figure：1, cylinder barrel；2, pedestal；2-1, cushion chamber；3, end cap；4, piston rod；4-1, buffering protrusion；5, piston；6,
Oil return hole；7, fuel feed hole；8, diversion rod；8-1, oil duct；8-2, hydraulic fluid port；9, deflector hole；10, fixed block.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1 to Figure 3, a kind of low voltage starting buffer type hydraulic oil cylinder, including cylinder barrel 1,1 both ends of cylinder barrel are fixed respectively
There are pedestal 2, end cap 3；Piston rod 4 is installed in cylinder barrel 1, centre bore is provided on end cap 3, piston rod 4 slides through end cap 3；It is living
4 inner end of stopper rod is connected with piston 5；Piston 5 is slidably mounted in cylinder barrel 1.2 center of pedestal is provided with cushion chamber 2-1, piston rod
4 inner ends are equipped with the buffering protrusion 4-1 with cushion chamber 2-1 cooperations；The fuel feed hole being connected to the bottoms cushion chamber 2-1 is provided on pedestal 2
7,1 front end of cylinder barrel is provided with oil return hole 6.
The inner end positions of 4 periphery of piston rod are provided with 4 uniformly distributed deep gouges, and fixed block 10 is embedded in deep gouge, fixed
Block 10 is fixedly connected by screw with piston rod 4.Installation through-hole is provided on fixed block 10, the inner end of installation through-hole is provided with step and stops
Mouthful, diversion rod 8 passes through the installation through-hole on fixed block 10,8 end of diversion rod to be equipped with the shelves platform coordinated with step seam allowance seam allowance.
Opposite, cooperation deflector hole 9, deflector hole 9 with diversion rod 8 is provided on pedestal 2 to be connected to fuel feed hole 7；Diversion rod 8 with
Deflector hole 9 is gap-matched；8 center of diversion rod is provided with oil duct 8-1, and hydraulic fluid port 8-2 is provided on the side wall at 8 both ends of diversion rod,
The inner end of diversion rod 8 seals.
When piston rod 4 is retracted into bottom, diversion rod 8 pass through deflector hole 9 and 8 inner end of diversion rod stretch out deflector hole 9 enter into
The hydraulic fluid port 8-2 of oilhole 7,8 inner end of diversion rod is connected to fuel feed hole 7.
The course of work：
1, when piston rod is fallen after rise：
When buffering protrusion has just enter into cushion chamber, meanwhile, water conservancy diversion boom end enters deflector hole, since diversion rod end seals,
So at this point, deflector hole is off state, buffering protrusion, cushion chamber, which cooperate, completes buffering；Buffering protrusion is completely into slow
When rushing chamber, diversion rod inner end stretches out deflector hole and enters fuel feed hole, and the hydraulic fluid port of diversion rod inner end is connected to fuel feed hole；
In the final stage of buffering, deflector hole is connected state, although this can influence buffering protrusion, the cushioning effect of cushion chamber,
But at this moment the speed of piston rod has been reduced to very low, therefore is influenced on buffering effect little；
2, when piston rod stretches out：
First oil circuit be：The high pressure oil of fuel feed hole enters cushion chamber, jacks up buffering protrusion；
Article 2 oil circuit is：The high pressure oil of fuel feed hole enters piston end surface by hydraulic fluid port, the oil duct in diversion rod, expands piston
Bar accepts face, improves and starts pressure；
After start-up, diversion rod progresses into deflector hole, and Article 2 oil circuit progressively closes off；But at this moment, piston rod has been started up,
Gap between buffering protrusion and cushion chamber is larger, and high pressure oil can be smoothly between buffering protrusion and cushion chamber
Enter piston end surface.
There is above-described embodiment to can be seen that the configuration of the present invention is simple, easy to process, production cost is low；With use check valve,
The structure impact resistance of diversion rod is stronger, and service life is long, maintenance cost.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of low voltage starting buffer type hydraulic oil cylinder, including cylinder barrel（1）, cylinder barrel（1）Both ends are respectively fixed with pedestal（2）, end
Lid（3）；The cylinder barrel（1）Piston rod is inside installed（4）, end cap（3）On be provided with centre bore, piston rod（4）Slide through end cap
（3）；The piston rod（4）Inner end is connected with piston（5）；The piston（5）It is slidably mounted on cylinder barrel（1）It is interior；
The pedestal（2）Center is provided with cushion chamber（2-1）, the piston rod（4）Inner end is equipped with and cushion chamber（2-1）Cooperation
Buffering protrusion（4-1）；The pedestal（2）On be provided with and cushion chamber（2-1）The fuel feed hole of bottom connection（7）, cylinder barrel（1）Front end
It is provided with oil return hole（6）；
It is characterized in that：
The piston rod（4）Inner face marginal position is fixed with multiple around piston rod（4）The uniformly distributed diversion rod in axle center（8）；It is described
Pedestal（2）On be provided with and diversion rod（8）Opposite, cooperation deflector hole（9）, deflector hole（9）With fuel feed hole（7）Connection；It is described to lead
Flow post（8）With deflector hole（9）It is gap-matched；Diversion rod（8）Center is provided with oil duct（8-1）, in diversion rod（8）The side at both ends
Hydraulic fluid port is provided on wall（8-2）, diversion rod（8）Inner end sealing；
Work as piston rod（4）When being retracted into bottom, diversion rod（8）Across deflector hole（9）And diversion rod（8）Deflector hole is stretched out in inner end（9）
Into fuel feed hole（7）, diversion rod（8）The hydraulic fluid port of inner end（8-2）With fuel feed hole（7）Connection.
2. low voltage starting buffer type hydraulic oil cylinder according to claim 1, it is characterised in that：The piston rod（4）Circumference
The inner end positions in face are provided with uniformly distributed deep gouge, and fixed block is embedded in deep gouge（10）；The fixed block（10）By screw with
Piston rod（4）It is fixedly connected；The diversion rod（8）Mounted on fixed block（10）On.
3. low voltage starting buffer type hydraulic oil cylinder according to claim 2, it is characterised in that：The fixed block（10）On open
There are installation through-hole, the inner end of installation through-hole to be provided with step seam allowance；The diversion rod（8）End is equipped with and the step seam allowance seam allowance
The shelves platform of cooperation.
4. according to any low voltage starting buffer type hydraulic oil cylinder in claims 1 to 3, it is characterised in that：The water conservancy diversion
Bar（8）There are four altogether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810540701.2A CN108757626B (en) | 2018-05-30 | 2018-05-30 | Low-pressure starting buffering type hydraulic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810540701.2A CN108757626B (en) | 2018-05-30 | 2018-05-30 | Low-pressure starting buffering type hydraulic oil cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108757626A true CN108757626A (en) | 2018-11-06 |
| CN108757626B CN108757626B (en) | 2020-04-07 |
Family
ID=64004439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810540701.2A Active CN108757626B (en) | 2018-05-30 | 2018-05-30 | Low-pressure starting buffering type hydraulic oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108757626B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201714734U (en) * | 2010-06-25 | 2011-01-19 | 格力乐液压系统(常州)有限公司 | Buffer type hydraulic oil cylinder used for wind energy equipment |
| CN201874925U (en) * | 2010-10-27 | 2011-06-22 | 东风汽车公司 | Adjustable buffer structure of hydraulic cylinder |
| CN203161708U (en) * | 2013-01-21 | 2013-08-28 | 三一汽车制造有限公司 | Buffering hydraulic oil cylinder |
| CN104204550A (en) * | 2012-03-23 | 2014-12-10 | 萱场工业株式会社 | Hydraulic cylinder |
| CN204727243U (en) * | 2015-04-23 | 2015-10-28 | 陕西安恬科工贸有限公司 | Fruit automatic emptying machine |
| CN205578403U (en) * | 2016-04-19 | 2016-09-14 | 湖南协力液压有限公司 | Butter type hydraulic oil cylinder |
-
2018
- 2018-05-30 CN CN201810540701.2A patent/CN108757626B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201714734U (en) * | 2010-06-25 | 2011-01-19 | 格力乐液压系统(常州)有限公司 | Buffer type hydraulic oil cylinder used for wind energy equipment |
| CN201874925U (en) * | 2010-10-27 | 2011-06-22 | 东风汽车公司 | Adjustable buffer structure of hydraulic cylinder |
| CN104204550A (en) * | 2012-03-23 | 2014-12-10 | 萱场工业株式会社 | Hydraulic cylinder |
| US20150040754A1 (en) * | 2012-03-23 | 2015-02-12 | Kayaba Industry Co., Ltd. | Fluid pressure cylinder |
| CN203161708U (en) * | 2013-01-21 | 2013-08-28 | 三一汽车制造有限公司 | Buffering hydraulic oil cylinder |
| CN204727243U (en) * | 2015-04-23 | 2015-10-28 | 陕西安恬科工贸有限公司 | Fruit automatic emptying machine |
| CN205578403U (en) * | 2016-04-19 | 2016-09-14 | 湖南协力液压有限公司 | Butter type hydraulic oil cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108757626B (en) | 2020-04-07 |
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