CN203476915U - Hydraulic oil cylinder with combined throttling buffer device - Google Patents
Hydraulic oil cylinder with combined throttling buffer device Download PDFInfo
- Publication number
- CN203476915U CN203476915U CN201320566878.2U CN201320566878U CN203476915U CN 203476915 U CN203476915 U CN 203476915U CN 201320566878 U CN201320566878 U CN 201320566878U CN 203476915 U CN203476915 U CN 203476915U
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- valve
- throttling
- screw
- buffer
- plug
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Abstract
The utility model discloses a hydraulic oil cylinder with a combined throttling buffer device. The hydraulic oil cylinder with the combined throttling buffer device comprises a cylinder barrel and a cylinder cover. The hydraulic oil cylinder with the combined throttling buffer device is characterized in that a throttling valve seat with a stepped hole structure, and a throttling valve plug with a combined structure are arranged on the side wall of the cylinder cover, the throttling valve seat comprises an outer side plug threaded hole, a middle cone valve threaded hole and an inner side valve port small hole, the throttling valve plug comprises a plug and a cone valve, the outer side plug threaded hole and the plug are in screw-thread fit, the middle cone valve threaded hole and a valve body of the cone valve are in screw-thread fit, the head portion of the cone valve abuts against the inner side valve port small hole in a cooperative mode, the side wall of the middle cone valve threaded hole is connected with a buffer chamber through small throttling holes, and the bottom of the inner side valve port small hole is connected with a buffer guiding chamber. According to the hydraulic oil cylinder with the combined throttling buffer device, the structure is simple, machining is convenient, the good buffer effect is achieved, and stable operation of a hydraulic system is ensured.
Description
Technical field
The utility model relates to hydraulic machinery field, refers to particularly a kind of hydraulic jack with combination throttling buffering device.
Background technique
When in hydraulic system, the load of the larger quality of hydraulic oil cylinder driving is reciprocating, there is very large momentum, when avoiding piston to walk to stroke terminal, because effect of inertia and cylinder cap generation mechanical impact or piston stop motion suddenly cause pipe-line system hydraulic shock, affect service behaviour and the transmission accuracy of equipment, cause system injury, so be generally provided with damping device in oil cylinder body.
Modal throttling pore and the shoulder hole offered on cylinder cap exactly of damping device, installs spool, forms throttle valve, simultaneously for guaranteeing that piston reverses direction starts rapidly, generally also pairing arranges one-way valve, forms one-way throttle damping device together with throttle valve, jointly realizes the buffer function of oil cylinder.
One-way throttle valve is conventional damping device in oil cylinder, and the larger hydraulic shock in energy moment mitigation system, avoids unnecessary shock and noise, but having relatively high expectations to processing.Specific works principle is as shown in Figure 1:
Piston 2 is interior reciprocating to promote load action at cylinder barrel 1, when moving to end of travel, the cushion collar 3 of one end enters buffer-oriented chamber 10, block the major avenues of approach of work fluid, fluid in buffer cavity 11 is oozed from the annular space of the throttling valve core 4 that is in parallel with primary path by piston 2 extruding, thereby produce larger buffer-braking power, piston 2 is slowed down.As for the speed or the duration that slow down, need to be according to oil hydraulic cylinder present load and movement velocity requirement, by setting up throttling valve core 4 openings of sizes to reach desirable cushioning effect.When piston 2 return motion, pressure oil enters oil cylinder from one-way valve 8 at first, and fuel feeding makes piston be able to smooth startup fast.
Throttling valve core 4 small volumes, screw in throttle valve seat and have locking nut 5 to reinforce, its diameter <10mm, be about 20mm, be divided into tapering, lower end, intermediate seal bar portion and upper end spiral shell buckle portion, require time processing to put in place, wherein, intermediate seal bar portion has the sealing groove of 3x1.9mm, and degree of finish can not be lower than Ra1.6.As shown in Figure 2, the throttle valve seat of assembling is divided into top screw 12 with it, intermediate seal pilot hole 13 and lower valve are young hole 14, three holes can not deflection, and the degree of finish that intermediate seal pilot hole 13 will have, after 4 assemblings of guarantee integral core, seal ring 6 does not damage, be not offset, top spiral shell button can correctly screw, but in practical operation due to machine tool error, the artificial tapping of screw thread is tilted, the perpendicularity of screw, the degree of finish of closed hole and deburring etc., guarantee that three holes exist certain difficulty with one heart completely, machine tool is difficult to accurately processing and puts in place, often there is bias or inclination in the installation of throttling valve core and valve seat, its cooperation can not realize the buffering of oil cylinder completely, to system, cause great threat.
Summary of the invention
The purpose of this utility model is exactly will overcome above-mentioned throttling valve core and valve seat to have deficiency eccentric or that tilt in installing, and a kind of simple in structure, convenient disassembly, cylinder buffer structure that cushioning effect is good are provided.
For achieving the above object, the hydraulic jack with combination throttling buffering device that the utility model is designed, comprise cylinder barrel and cylinder cap, in described cylinder barrel, piston is installed, between described piston termination and cylinder cap, be formed with buffer cavity, described piston termination is provided with cushion collar, and described cylinder cap inner side is provided with the buffer-oriented chamber of matching with cushion collar, and described buffer-oriented is provided with unloading port on chamber; On described cylinder cap, be also provided with one-way valve, described one-way valve is connected with buffer cavity, and its special way is:
On described cylinder cap sidewall, be provided with the throttle valve seat of shoulder hole structure and the throttling valve core of composite structure, described throttle valve seat comprises outside plug screw, middle part cone valve screw and inner side valve port aperture, and described throttling valve core comprises plug and cone valve; Described outside plug screw and plug screw-thread fit, described middle part cone valve screw and cone valve valve body screw-thread fit, described cone valve head coordinates with inner side valve port aperture butt, described middle part cone valve screw sidewall is connected with buffer cavity by throttling pore, and valve port aperture bottom in described inner side is connected with buffer-oriented chamber.
Further, described outside plug screw and cylinder cap junction are provided with sealing gasket.
Throttling valve core adopts split type processing, in the situation that enterprise does not possess well processed equipment, both reduced machine tooling difficulty, met again the design function of throttling modulating valve, realize good cushioning effect, guarantee the smooth running of hydraulic system, the processing of this cylinder buffer structure is simple, easy accessibility, has greatly applicable effect and Technological Economy and is worth.
Accompanying drawing explanation
Fig. 1 is prior art cylinder buffer structural representation.
Fig. 2 is throttle valve seat structural representation in Fig. 1.
Fig. 3 is a kind of hydraulic jack structural representation with combination throttling buffering device of the utility model.
Fig. 4 is throttling valve core and throttle valve seat partial enlarged drawing in Fig. 3.
Fig. 5 is throttle valve seat structural representation in Fig. 4.
Fig. 6 is stopper structure schematic diagram in Fig. 4.
Fig. 7 is cone valve structure schematic diagram in Fig. 4.
In figure: piston 1, cylinder barrel 2, cushion collar 3, throttling valve core 4, locking nut 5, seal ring 6, unloading port 7, one-way valve 8, cylinder cap 9, buffer-oriented chamber 10, buffer cavity 11, top screw 12, intermediate seal pilot hole 13, lower valve is young hole 14, plug screw 15, cone valve screw 16, lower valve is young hole 17, plug 18, cone valve 19, sealing gasket 20, throttling pore 21.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
The oil cylinder with buffer structure of the prior art shown in Fig. 1～2 describes in background technique, repeats no more here.
The hydraulic jack with combination throttling buffering device as shown in Fig. 3～6, comprise cylinder barrel 1 and cylinder cap 9, in described cylinder barrel 1, piston 2 is installed, between described piston 2 terminations and cylinder cap 9, be formed with buffer cavity 11, described piston 2 terminations are provided with cushion collar 3, described cylinder cap 9 inner sides are provided with the buffer-oriented chamber 10 of matching with cushion collar 3, on described buffer-oriented chamber 10, are provided with unloading port 7; On described cylinder cap 9, be also provided with one-way valve 8, described one-way valve 8 is connected with buffer cavity 11, on described cylinder cap 9 sidewalls, be provided with the throttle valve seat 22 of shoulder hole structure and the throttling valve core 23 of composite structure, described throttle valve seat 22 comprises outside plug screw 15, middle part cone valve screw 16 and inner side valve port aperture 17, and described throttling valve core 23 comprises plug 18 and cone valve 19; Described outside plug screw 15 and plug 18 screw-thread fit, described middle part cone valve screw 16 and cone valve 19 valve body screw-thread fit, described cone valve 19 heads coordinate with inner side valve port aperture 17 butts, described middle part cone valve screw 16 sidewalls are connected with buffer cavity 11 by throttling pore 21, and valve port aperture 17 bottoms, described inner side are connected with buffer-oriented chamber 10.Described outside plug screw 15 is provided with sealing gasket 20 with cylinder cap 9 junctions.
During work, piston 2 is interior reciprocating to promote load action at cylinder barrel 1, when moving to end of travel, the cushion collar 3 of one end enters buffer-oriented chamber 10, block the major avenues of approach hydraulic fluid port 7 of work fluid, fluid in buffer cavity 11 is oozed from the annular space of the valve port aperture 17 that is in parallel with primary path by piston 2 extruding, thereby produces larger buffer-braking power, and piston 2 is slowed down.As for the speed or the duration that slow down, need to be according to oil hydraulic cylinder present load and movement velocity requirement, by regulating cone valve 19 and valve port aperture 17 openings of sizes to reach desirable cushioning effect.When piston 2 return motion, pressure oil enters oil cylinder from one-way valve 8 at first, and fuel feeding makes piston 2 be able to smooth startup fast.
During drilling processing throttle bore seat, first get out the thread Pilot hole of top plug screw 15, because drill bit accounts for angular dependence, in its bottom, can produce a self centering recess groove, the thread Pilot hole of screw 16 in the middle of now getting out with less drill bit again, finally with less drill bit, get out the valve port aperture 17 of throttle valve, guarantee that in theory three holes are concentric, figure tapping is pressed in last pincers worker.
During processing throttling valve core, parts processing.Bottom cone valve 19 screws with middle cone valve screw 16, and the conehead of bottom cone valve 19 and valve port aperture 17 adaptations are responsible for regulating openings of sizes; Top plug 18 screws with top screw 15, is responsible for valve seal.While needing to regulate, oil cylinder pressure release, first unclamps top plug 18, with the positive and negative precession of screw-driver, makes cone valve 19 move up and down the degree of depth needing, use again plug 18 lock sealing pads 20, do stand test operation judgement, so repeatedly regulate openings of sizes, until reach satisfied cushioning effect, like this, greatly reduce the difficulty of processing of spool, valve seat and coaxality, degree of finish requirement, certain eccentric even if upper and lower two hole drillings or drilling screw exist, do not affect the use of valve yet.
Claims (2)
1. one kind has the hydraulic jack that combines throttling buffering device, comprise cylinder barrel (1) and cylinder cap (9), piston (2) is installed in described cylinder barrel (1), between described piston (2) termination and cylinder cap (9), be formed with buffer cavity (11), described piston (2) termination is provided with cushion collar (3), described cylinder cap (9) inner side is provided with the buffer-oriented chamber (10) of matching with cushion collar (3), is provided with unloading port (7) on described buffer-oriented chamber (10); On described cylinder cap (9), be also provided with one-way valve (8), described one-way valve (8) is connected with buffer cavity (11), it is characterized in that:
On described cylinder cap (9) sidewall, be provided with the throttle valve seat (22) of shoulder hole structure and the throttling valve core (23) of composite structure, described throttle valve seat (22) comprises outside plug screw (15), middle part cone valve screw (16) and inner side valve port aperture (17), and described throttling valve core (23) comprises plug (18) and cone valve (19); Described outside plug screw (15) and plug (18) screw-thread fit, described middle part cone valve screw (16) and cone valve (19) valve body screw-thread fit, described cone valve (19) head coordinates with inner side valve port aperture (17) butt, described middle part cone valve screw (16) sidewall is connected with buffer cavity (11) by throttling pore (21), and described inner side valve port aperture (17) bottom is connected with buffer-oriented chamber (10).
2. the hydraulic jack according to claim 1 with combination throttling buffering device, is characterized in that: described outside plug screw (15) is provided with sealing gasket (20) with cylinder cap (9) junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320566878.2U CN203476915U (en) | 2013-09-12 | 2013-09-12 | Hydraulic oil cylinder with combined throttling buffer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320566878.2U CN203476915U (en) | 2013-09-12 | 2013-09-12 | Hydraulic oil cylinder with combined throttling buffer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203476915U true CN203476915U (en) | 2014-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320566878.2U Expired - Fee Related CN203476915U (en) | 2013-09-12 | 2013-09-12 | Hydraulic oil cylinder with combined throttling buffer device |
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| Country | Link |
|---|---|
| CN (1) | CN203476915U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575596A (en) * | 2017-10-17 | 2018-01-12 | 中钢集团西安重机有限公司 | Split type the throttle valve lever device and its component of clay gun angling cylinder |
| CN109538575A (en) * | 2019-01-17 | 2019-03-29 | 大连诺美液压件有限公司 | Ship hydraulic cylinder with individual event speed governing valve |
| CN113007338A (en) * | 2021-03-18 | 2021-06-22 | 宁波市鄞州方程液压件有限公司 | Steady gear shifting operating valve |
-
2013
- 2013-09-12 CN CN201320566878.2U patent/CN203476915U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575596A (en) * | 2017-10-17 | 2018-01-12 | 中钢集团西安重机有限公司 | Split type the throttle valve lever device and its component of clay gun angling cylinder |
| CN107575596B (en) * | 2017-10-17 | 2024-04-23 | 中钢集团西安重机有限公司 | Split throttle valve rod device of clay gun rotary oil cylinder and assembly thereof |
| CN109538575A (en) * | 2019-01-17 | 2019-03-29 | 大连诺美液压件有限公司 | Ship hydraulic cylinder with individual event speed governing valve |
| CN113007338A (en) * | 2021-03-18 | 2021-06-22 | 宁波市鄞州方程液压件有限公司 | Steady gear shifting operating valve |
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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 |
Granted publication date: 20140312 Termination date: 20170912 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |