CN108799227A - A kind of cylinder buffer valve and numerically-controlled machine tool deceleration oil cylinder - Google Patents
A kind of cylinder buffer valve and numerically-controlled machine tool deceleration oil cylinder Download PDFInfo
- Publication number
- CN108799227A CN108799227A CN201810655827.4A CN201810655827A CN108799227A CN 108799227 A CN108799227 A CN 108799227A CN 201810655827 A CN201810655827 A CN 201810655827A CN 108799227 A CN108799227 A CN 108799227A
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- Prior art keywords
- piston
- cylinder
- valve
- valve seat
- metering hole
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Classifications
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- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/023—Excess flow valves, e.g. for locking cylinders in case of hose burst
-
- 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
- F15B15/1447—Pistons; Piston to piston rod assemblies
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The present invention relates to oil cylinder technical fields, disclose a kind of cylinder buffer valve, include the valve rod for being connected with piston and the valve seat for being connected with cylinder body set on oil port, oil outlet is offered in the valve seat, the oil outlet includes the metering hole communicated with inner chamber of cylinder block and the outage that is communicated with hydraulic fluid port, the metering hole is mutually perpendicular to and communicates with outage, and the valve rod is matched with metering hole, can be blocked to outage when the valve rod follows piston to do linear reciprocal movement.By the setting of valve rod, valve seat, metering hole and outage, replaced in a manner of the flow of limitation oil the elastic parts such as spring by the way of own resilient to piston into row buffering, the wear extent of valve rod and valve seat is less, and service life and service life are longer.
Description
Technical field
The present invention relates to oil cylinder technical field, more particularly to a kind of cylinder buffer valve and numerically-controlled machine tool deceleration oil cylinder.
Background technology
Numerically-controlled machine tool is common process equipment in industrial production, top to the part of end face complexity and not allow to hit
The part in heart hole is supported.Traditional top range controlling mechanism includes top and connecting rod, top generally to be driven by oil cylinder
It is top to do stretching motion.
Existing oil cylinder generally all without pooling feature, cause it is top when being supported to workpiece, it is top to be easy with workpiece
Colliding leads to workpiece and top destroys.
Currently, the Chinese patent that Authorization Notice No. is CN205315383U discloses a kind of novel hydraulic cylinder, including cylinder
Body, piston and piston rod, cylinder body left upper end are equipped with oil inlet, and cylinder body upper right side is equipped with oil outlet, and cylinder body appearance is equipped with several
Circular radiating slot, cylinder interior are equipped with piston, and piston is equipped with piston rod, tray, support are equipped on the outside of the piston rod above piston
Block lower end is equipped with cushion pad, is equipped with buffer spring between cushion pad and tray, the cylinder structure is simple, rationally, perfect heat-dissipating,
Service life is long.
Although there is above-mentioned oil cylinder pooling feature can be protected to workpiece, above-mentioned oil cylinder is simply by buffering
To piston into row buffering, buffer spring is easy fatigue and generates the phenomenon that elastic force reduces spring, therefore the use longevity of above-mentioned oil cylinder
Life is shorter.
Invention content
The object of the present invention is to provide a kind of cylinder buffer valves, have the advantages that service life is longer.
The present invention above-mentioned technical purpose technical scheme is that：A kind of cylinder buffer valve, including
Valve rod for being connected with piston and for the valve seat for being set to oil port that is connected with cylinder body, oil outlet is offered in the valve seat,
The oil outlet includes the metering hole communicated with inner chamber of cylinder block and the outage that is communicated with hydraulic fluid port, the metering hole and outage phase
Mutually vertical and communicate, the valve rod is matched with metering hole, can be to oil extraction when the valve rod follows piston to do linear reciprocal movement
It is blocked in hole.
By using above-mentioned technical proposal, valve seat is installed on to the oil port of oil cylinder, outage is communicated with hydraulic fluid port, by valve rod
It is connected with piston, and valve rod is made to be directed toward valve seat, so as to normal use.During piston motion, when valve rod is not contacted with valve seat, oil
The oil inlet quantity and oil pump capacity of two hydraulic fluid ports on cylinder are all constant, to ensure the proper motion of piston.Valve rod connects with valve seat
When touching, i.e. piston soon moves to the bottom of cylinder body, it is top close to workpiece when, valve rod follows piston to continue to move into valve seat,
Valve rod enters to be blocked in metering hole and gradually to outage, and the fuel-displaced area of metering hole reduces, and is discharged by metering hole
Oil pump capacity also and then reduces, and damping starts to become larger, and piston speed starts to be reduced.With the continuous movement of valve rod, outage quilt
The area blocked is increasing, and damping is also increasing, and the speed of piston is also slower and slower, so that top speed obtains
Buffering, top to be contradicted with slower speed and workpiece, top smaller with the impact force of workpiece, top and workpiece is protected, no
It is fragile, also improve machine tool accuracy and stability.Compared with traditional electrical equipment, service life is longer.
By the setting of valve rod, valve seat, metering hole and outage, the elasticity such as spring are replaced in a manner of the flow of limitation oil
Part by the mode of own resilient to piston into row buffering, the wear extent of valve rod and valve seat is less, service life and uses the longevity
Life is longer.
The present invention is further arranged to：Limited step is equipped in the metering hole, the valve rod is set close to the end of piston
Have and the matched limit flange of limited step.
It is top to be contacted with workpiece when limit flange is contradicted with limited step by using above-mentioned technical proposal.Limit flange
The motion path of valve rod is defined with limited step, and the movement of piston and valve rod is stopped into whereabouts, is further decreased
The top impact force to workpiece prevents valve rod and piston motion excessive to be protected to top and workpiece, top to workpiece
It causes to hit.
The present invention is further arranged to：The length of the metering hole is more than the length of valve rod.
By using above-mentioned technical proposal, the length of metering hole is longer, and valve rod is embedded in metering hole completely, the end of valve rod
Will not with contacted at the top of metering hole, to prevent valve rod and metering hole from hitting, valve rod and valve seat are protected, increase valve seat
With the service life of valve rod.
The present invention is further arranged to：The limit flange is equipped with cushion pad towards the surface of limited step.
By using above-mentioned technical proposal, when limit flange is contacted with limited step, cushion pad delays limit flange
Punching protection reduces impact force of the limit flange to limiting stand, to increase the service life of the present apparatus.
The present invention is further arranged to：End of the valve rod far from piston is equipped with sealing ring.
By using above-mentioned technical proposal, the outer wall of valve stem end is arranged with the sealing ring for sealing, enhancing valve rod with
Leakproofness between metering hole, prevents oil leak.
The present invention is further arranged to：The junction of the metering hole and outage is equipped with rounded corner.
By using above-mentioned technical proposal, the oil in cylinder body be all by metering hole from outage flow out, and metering hole and
Outage is mutually perpendicular to, and oil needs to turn to by primary in discharge process, and the junction of metering hole and outage is set as rounded corner
Convenient for the flowing and discharge of oil, the residual of oil mass is reduced.
It is a further object of the present invention to provide a kind of numerically-controlled machine tool deceleration oil cylinders, have protection top excellent with workpiece
Point.
The present invention above-mentioned technical purpose technical scheme is that：A kind of numerically-controlled machine tool oil that slows down
Cylinder, including cylinder body open up on cylinder body there are two hydraulic fluid port, slidably connect piston in cylinder body, piston is connected with the piston for stretching out cylinder body
Bar further includes a kind of above-mentioned cylinder buffer valve.
By using above-mentioned technical proposal, the top of this oil cylinder and numerically-controlled machine tool is adapted to use, it is top close to workpiece when, oil
Cylinder trimmer valve starts, to piston and top into row buffering, to reduce top speed.It is top closer to workpiece, top speed is got over
Slowly, to reduce top and workpiece impact force, top and workpiece is protected.
The present invention is further arranged to：The piston is equipped with an at least guide rod, the valve towards the end face of valve seat
It is offered on seat and the mutually matched pilot hole of guide rod, guide rod and pilot hole clearance fit.
By using above-mentioned technical proposal, when piston is close to valve seat, guide rod moves closer to pilot hole and piston is followed to transport
Dynamic to be inserted into pilot hole, piston continues to move, and valve rod is gradually inserted in metering hole.The movement road of guide rod and pilot hole to piston
Diameter is oriented to and is limited, and ensures valve rod and metering hole face.Pilot hole and guide rod clearance fit, guide rod are inserted into pilot hole
Ensure that the oil in pilot hole can normally flow out when interior.
The present invention is further arranged to：The placing groove for placing valve seat, the end of valve seat are offered in the inner chamber of cylinder block
The notch of placing groove is not stretched out in portion.
By using above-mentioned technical proposal, valve seat is in placing groove, convenient for the flowing and discharge of oil, reduces oil in cylinder body
Residual quantity.
The present invention is further arranged to：The inner chamber of cylinder block is equipped with funnel shaped drain face, institute at the notch of placing groove
The end face for stating piston towards valve seat is set as and the matched truncated cone-shaped in drain face.
By using above-mentioned technical proposal, the drain face at the notch of placing groove is set as infundibulate, is convenient for fluid to valve seat
To be discharged, piston is matched with drain face for flowing, is ensured that piston all extrudes the oil in cylinder body, is further decreased cylinder
The residual of internal oil mass.
In conclusion the invention has the advantages that：
1, by the setting of valve rod, valve seat, metering hole and outage, the elasticity such as spring zero is replaced in a manner of the flow of limitation oil
Part by the mode of own resilient to piston into row buffering, the wear extent of valve rod and valve seat is less, service life and service life
It is longer；
2, by the setting in funnel shaped drain face and placing groove, valve seat, convenient for discharge oily in cylinder body, subtracts in placing groove
Oily residual quantity in few cylinder body.
Description of the drawings
Fig. 1 is the connection diagram of embodiment one and oil cylinder；
Fig. 2 is the structural schematic diagram of embodiment one；
Fig. 3 is the structural schematic diagram of embodiment two；
It is the structural schematic diagram for showing guide rod and pilot hole that Fig. 4, which is in embodiment two,.
In figure：1, valve rod；11, flange is limited；12, cushion pad；13, sealing ring；2, valve seat；21, oil outlet；22, current limliting
Hole；23, outage；24, limited step；25, pilot hole；3, cylinder body；31, hydraulic fluid port；32, piston；33, piston rod；34, it is oriented to
Bar；35, placing groove；36, drain face.
Specific implementation mode
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment one：
A kind of cylinder buffer valve, such as Fig. 1, including valve seat 2 and valve rod 1.Valve rod 1 is connected with the piston 32 of oil cylinder, valve seat 2 and oil cylinder
Hydraulic fluid port 31 be connected.Oil outlet 21 is offered on valve seat 2, oil outlet 21 is set as " L " shape, includes the limit communicated with 3 inner cavity of cylinder body
Discharge orifice 22 and the outage 23 being connected with hydraulic fluid port 31.Having in cylinder body 3 is discharged by metering hole 22 and outage 23 from hydraulic fluid port 31.
Such as Fig. 1, valve rod 1 cooperates with metering hole 22, and valve rod 1 can carry out oil outlet 21 when sliding in metering hole 22
It blocks.Piston 32 does linear movement with ovable valve stem 1, and when valve rod 1 is not contacted with valve seat 2, oil pump capacity and oil inlet quantity are constant, piston
32, with normal faster speed uniform motion, ensure the working efficiency of oil cylinder.Piston 32 is inserted into ovable valve stem 1 in metering hole 22
When, valve rod 1 gradually blocks outage 23, and the oil extraction area of outage 23 is gradually reduced, and oil pump capacity is gradually reduced, damping
It becomes larger, piston 32 is buffered.The elastic force of elastic component is not depended on into row buffering, to prevent elastic component from fatigue elasticity drop occurs
It is low, it is reduced so as to cause buffering effect.To the speed of piston 32 into row buffering in a manner of the flow of control oil, buffering effect is steady
Fixed, service life is longer.
Such as Fig. 1 and Fig. 2, end of the valve rod 1 far from piston 32 is equipped with sealing ring 13, and sealing ring 13 is in this metering hole 22
Space is sealed, and the oil in metering hole 22 is prevented to be lost in by the gap between valve rod 1 and metering hole 22.Sealing ring 13 is set to
End of the valve rod 1 far from piston 32, valve rod 1 enter in metering hole 22, and sealing ring 13 is sealed metering hole 22, prevents from limiting
Oil in discharge orifice 22 is excessive, reduces the residual of oil mass in cylinder body 3.
Such as Fig. 1, the length of metering hole 22 is more than the length of valve rod 1.The length of metering hole 22 is longer, and valve rod 1 is fully inserted into
In metering hole 22, the end of valve rod 1 is not also contradicted with the bottom hole of metering hole 22, and valve rod 1 is avoided to collide with valve seat 2, to
Valve rod 1 and valve seat 2 are protected, the service life of the present apparatus is increased.
Such as Fig. 1 and Fig. 2, the interior limited step 24 being equipped with for stopping valve rod 1 of metering hole 22, valve rod 1 is close to piston 32
End is equipped with and 24 matched limit flange 11 of limited step.When limited step 24 is contradicted with limit flange 11,32 nothing of piston
Method continues to move to 2 direction of valve seat.Limit flange 11 and limited step 24 limit the travel of valve rod 1 and piston 32
It is fixed.32 hyperkinesia of piston is prevented, drives external top and workpiece to occur to hit to workpiece and top damage.
Such as Fig. 2, limit flange 11 is equipped with cushion pad 12 towards the surface of limited step 24.Limit flange 11 and limiting stand
When rank 24 contacts, cushion pad 12 carries out buffer protection to limit flange 11, reduces impact force of the limit flange 11 to limiting stand, from
And increase the service life of the present apparatus.Cushion pad 12 also has certain sealing function, enhances the leakproofness of the present apparatus, anti-leak-stopping
Oil.
Such as Fig. 1, metering hole 22 and the junction of outage 23 are equipped with rounded corner.Oil in cylinder body 3 is all by metering hole
22 flow out from outage 23, and metering hole 22 and outage 23 are mutually perpendicular to, and oil needs to turn to by primary in discharge process, limit
The junction of discharge orifice 22 and outage 23 is set as flowing and discharge of the rounded corner convenient for oil, reduces the residual of oil mass.
Valve seat 2 is installed at the hydraulic fluid port 31 of oil cylinder by specific implementation process, and outage 23 is communicated with hydraulic fluid port 31, by valve rod 1
It is connected with piston 32, and valve rod 1 is made to be directed toward valve seat 2, so as to normal use.Piston 32 is moved with ovable valve stem 1, and valve rod 1 is gradually inserted
Enter in metering hole 22, valve rod 1 gradually blocks outage 23, and the oil extraction area of outage 23 is gradually reduced, oil pump capacity by
Decrescence small, damping becomes larger, and piston 32 is buffered.
Embodiment two：
A kind of numerically-controlled machine tool deceleration oil cylinder, such as Fig. 3, including cylinder body 3 open up on cylinder body 3 there are two hydraulic fluid port 31, sliding in cylinder body 3
Dynamic to be connected with piston 32, piston 32 is connected with the piston rod 33 for stretching out cylinder body 3, the cylinder buffer being equipped in cylinder body 3 in embodiment one
Valve.
Such as Fig. 3, hydraulic fluid port 31 divides for suitable for reading and lower mouth, and 3 inner cavity of cylinder body is divided into epicoele and cavity of resorption, 33, piston rod by piston 32
In upper intracavitary, valve seat 2 is connected with lower mouth, and valve rod 1 is set to piston 32 towards on the surface of valve seat 2.
Such as Fig. 3, the centre position of piston 32 offers the connecting hole for being connected with valve rod 1, the upper end of valve rod 1 and connection
Hole screw thread is connected, simple in structure, is easily installed.
Such as Fig. 3, cylinder body 3 offers the placing groove 35 of indent close to the end of lower mouth, and valve seat 2 is positioned in placing groove 35,
The end of valve seat 2 does not stretch out the notch of placing groove 35.Valve seat 2, convenient for the flowing and discharge of oil, reduces cylinder in placing groove 35
Oily residual quantity in body 3.
Such as Fig. 3,3 inner cavity of cylinder body is equipped with funnel shaped drain face 36 at the notch of placing groove 35, and piston 32 is towards valve seat 2
End face be set as and 36 matched truncated cone-shaped of drain face.Drain face 36 is set as infundibulate, convenient for fluid to valve seat 2 flowing to
It is discharged, piston 32 is matched with drain face 36, is ensured that piston 32 all extrudes the oil in cylinder body 3, is further decreased cylinder
The residual of oil mass in body 3.
Such as Fig. 4, open up that there are two pilot holes 25 on valve seat 2, piston 32 is equipped with towards the end face of valve seat 2 and pilot hole 25
Matched guide rod 34, guide rod 34 and 25 clearance fit of pilot hole.When piston 32 is close to valve seat 2, guide rod 34 gradually connects
Nearly pilot hole 25 simultaneously follows the movement of piston 32 to be inserted into pilot hole 25, and piston 32 continues to move, and valve rod 1 is gradually inserted metering hole 22
In.Guide rod 34 and pilot hole 25 are oriented to and are limited to the motion path of piston 32, are ensureing valve rod 1 and metering hole 22 just
It is right.Pilot hole 25 and 34 clearance fit of guide rod ensure that the oil in pilot hole 25 can when guide rod 34 is inserted into pilot hole 25
Normal outflow.
This oil cylinder is connected by specific implementation process with the top of numerically-controlled machine tool, this oil cylinder controls top movement,
It is top close to workpiece when, cylinder buffer valve starts, to piston 32 and top into row buffering, to reduce top speed.It is top closer to
Workpiece, top speed is slower, to reduce top and workpiece impact force, is protected to top and workpiece.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art
Member can as needed make the present embodiment the modification of not creative contribution after reading this specification, but as long as at this
It is all protected by Patent Law in the right of invention.
Claims (10)
1. a kind of cylinder buffer valve, it is characterised in that：Including being used for and piston（32）Connected valve rod（1）Be used for and cylinder body
（3）It is connected and is set to hydraulic fluid port（31）The valve seat at place（2）, the valve seat（2）Inside offer oil outlet（21）, the oil outlet（21）Packet
It includes and cylinder body（3）The metering hole that inner cavity communicates（22）With with hydraulic fluid port（31）The outage communicated（23）, the metering hole（22）With
Outage（23）It is mutually perpendicular to and communicates, the valve rod（1）With metering hole（22）It matches, the valve rod（1）Follow piston
（32）It can be to outage when doing linear reciprocal movement（23）It is blocked.
2. a kind of cylinder buffer valve according to claim 1, it is characterised in that：The metering hole（22）It is interior to be equipped with limiting stand
Rank（24）, the valve rod（1）Close to piston（32）End be equipped with and limited step（24）Matched limit flange（11）.
3. a kind of cylinder buffer valve according to claim 2, it is characterised in that：The metering hole（22）Length be more than valve
Bar（1）Length.
4. a kind of cylinder buffer valve according to claim 2, it is characterised in that：The limit flange（11）Towards limiting stand
Rank（24）Surface be equipped with cushion pad（12）.
5. a kind of cylinder buffer valve according to claim 1, it is characterised in that：The valve rod（1）Far from piston（32）'s
End is equipped with sealing ring（13）.
6. a kind of cylinder buffer valve according to claim 1, it is characterised in that：The metering hole（22）With outage（23）
Junction be equipped with rounded corner.
7. a kind of numerically-controlled machine tool top deceleration oil cylinder, including cylinder body（3）, cylinder body（3）On open up there are two hydraulic fluid port（31）, cylinder body
（3）Inside slidably connect piston（32）, piston（32）It is connected with stretching cylinder body（3）Piston rod（33）, it is characterised in that：Further include
A kind of cylinder buffer valve of claim 1-6 any one of them.
8. a kind of numerically-controlled machine tool deceleration oil cylinder according to claim 7, it is characterised in that：The piston（32）Towards valve
Seat（2）End face be equipped with an at least guide rod（34）, the valve seat（2）On offer and guide rod（34）It is mutually matched
Pilot hole（25）, guide rod（34）With pilot hole（25）Clearance fit.
9. a kind of numerically-controlled machine tool deceleration oil cylinder according to claim 7, it is characterised in that：The cylinder body（3）In inner cavity
It offers for placing valve seat（2）Placing groove（35）, valve seat（2）End do not stretch out placing groove（35）Notch.
10. a kind of numerically-controlled machine tool deceleration oil cylinder according to claim 9, it is characterised in that：The cylinder body（3）Inner cavity exists
Placing groove（35）Notch at be equipped with funnel shaped drain face（36）, the piston（32）Towards valve seat（2）End face be set as with
Drain face（36）Matched truncated cone-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810655827.4A CN108799227B (en) | 2018-06-23 | 2018-06-23 | Oil cylinder buffer valve and speed reduction oil cylinder for numerical control machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810655827.4A CN108799227B (en) | 2018-06-23 | 2018-06-23 | Oil cylinder buffer valve and speed reduction oil cylinder for numerical control machine tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108799227A true CN108799227A (en) | 2018-11-13 |
| CN108799227B CN108799227B (en) | 2020-12-11 |
Family
ID=64084664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810655827.4A Expired - Fee Related CN108799227B (en) | 2018-06-23 | 2018-06-23 | Oil cylinder buffer valve and speed reduction oil cylinder for numerical control machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108799227B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87200856U (en) * | 1987-01-26 | 1988-05-11 | 何明林 | Sausage machine with centre stuff-filling device |
| CN101598156A (en) * | 2009-06-17 | 2009-12-09 | 江苏恒立高压油缸有限公司 | Floating-type cushion cylinder |
| CN202132302U (en) * | 2011-07-08 | 2012-02-01 | 安徽省佳瑞德机械设备有限公司 | Spindle rotation oil cylinder for double-rod piston machine tool |
| CN102705294A (en) * | 2012-06-26 | 2012-10-03 | 上海三一重机有限公司 | High-pressure cylinder and excavator comprising same |
| CN202483985U (en) * | 2012-03-06 | 2012-10-10 | 蚌埠市行星工程机械有限公司 | Buffering hydraulic cylinder |
| CN202545415U (en) * | 2012-03-13 | 2012-11-21 | 厦门银华机械有限公司 | Device for fastening cushion pin of hydraulic oil cylinder |
| CN203441869U (en) * | 2013-09-09 | 2014-02-19 | 莱芜钢铁集团有限公司 | AGC hydraulic cylinder |
| CN105041776A (en) * | 2015-08-29 | 2015-11-11 | 济南大学 | Hydraulic cylinder with equal-percent-type starting characteristic |
| CN105041771A (en) * | 2015-08-29 | 2015-11-11 | 济南大学 | Hydraulic cylinder of which starting characteristic is straight |
| CN206754038U (en) * | 2017-04-20 | 2017-12-15 | 江阴鹰格尔液压机械有限公司 | A kind of floating buffer formula hydraulic cylinder |
-
2018
- 2018-06-23 CN CN201810655827.4A patent/CN108799227B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87200856U (en) * | 1987-01-26 | 1988-05-11 | 何明林 | Sausage machine with centre stuff-filling device |
| CN101598156A (en) * | 2009-06-17 | 2009-12-09 | 江苏恒立高压油缸有限公司 | Floating-type cushion cylinder |
| CN202132302U (en) * | 2011-07-08 | 2012-02-01 | 安徽省佳瑞德机械设备有限公司 | Spindle rotation oil cylinder for double-rod piston machine tool |
| CN202483985U (en) * | 2012-03-06 | 2012-10-10 | 蚌埠市行星工程机械有限公司 | Buffering hydraulic cylinder |
| CN202545415U (en) * | 2012-03-13 | 2012-11-21 | 厦门银华机械有限公司 | Device for fastening cushion pin of hydraulic oil cylinder |
| CN102705294A (en) * | 2012-06-26 | 2012-10-03 | 上海三一重机有限公司 | High-pressure cylinder and excavator comprising same |
| CN203441869U (en) * | 2013-09-09 | 2014-02-19 | 莱芜钢铁集团有限公司 | AGC hydraulic cylinder |
| CN105041776A (en) * | 2015-08-29 | 2015-11-11 | 济南大学 | Hydraulic cylinder with equal-percent-type starting characteristic |
| CN105041771A (en) * | 2015-08-29 | 2015-11-11 | 济南大学 | Hydraulic cylinder of which starting characteristic is straight |
| CN206754038U (en) * | 2017-04-20 | 2017-12-15 | 江阴鹰格尔液压机械有限公司 | A kind of floating buffer formula hydraulic cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108799227B (en) | 2020-12-11 |
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