CN103318801B - Quick oil inletting and slow oil returning valve structure for lifting tools - Google Patents
Quick oil inletting and slow oil returning valve structure for lifting tools Download PDFInfo
- Publication number
- CN103318801B CN103318801B CN201310265878.3A CN201310265878A CN103318801B CN 103318801 B CN103318801 B CN 103318801B CN 201310265878 A CN201310265878 A CN 201310265878A CN 103318801 B CN103318801 B CN 103318801B
- Authority
- CN
- China
- Prior art keywords
- valve
- oil
- spring
- valve seat
- limited lever
- 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.)
- Active
Links
Landscapes
- Actuator (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention belongs to the technical field of hydraulic lifting devices, and relates to a quick oil inletting and slow oil returning valve structure for lifting tools. The quick oil inletting and slow oil returning valve structure comprises a valve seat, a valve limiting rod, a valve and a spring, a first sealing face and a second sealing face are formed on the surface, facing to one side of the valve, of the valve seat, an oil inletting and returning concave passage is formed between the first sealing face and the second sealing face, a group of oil inletting and returning holes are formed in the valve seat, a spring supporting cavity is formed at the center of the valve seat, the valve limiting rod is fixed at the center of the valve seat, the valve is sleeved on the valve limiting rod, a slow oil returning hole is formed in the valve, the spring is sleeved on the valve limiting rod, the upper end of the spring is supported on the valve, and the lower end of the spring is supported on the bottom wall of the spring supporting cavity. Lifted objects are protected, and a piston rod is prevented from being damaged; when oil is pumped to a cylinder cavity of an oil cylinder, oil enters from the group of oil inletting and returning holes in the valve seat, the valve is jacked up to be away from the first and second sealing faces, and the oil rapidly enters the oil cavity of the oil cylinder from the oil inletting and returning concave passage to enable the piston rod to be lifted up quickly.
Description
Technical field
The invention belongs to hydraulic pressure lifting device technical field, be specifically related to a kind of slow oil returning valve structure of fast oil-feed of lifting implement.
Background technology
Above mentioned lifting implement mainly refers to but is not limited to refer to jack and vertical transport top.For jack, its structure and principle of work are all known, and in order to improve operating efficiency, when oily to pump in oil cylinder, the piston that usual hope is positioned at the cylinder chamber of oil cylinder stretches rapidly outside cylinder chamber, so that by piston end by quick for weight lifting, so the diameter being opened in oil inlet and oil return road that is on base and that communicate with the cylinder chamber of oil cylinder is suitably increased.But facts have proved that this mentality of designing exists the problem of attending to one thing and lose sight of another, so-called Gu this refer to the quick lifting that can meet piston rod and use the lifting speed improved weight, so-called mistake that to refer to when oil return when piston rod bounces back in cylinder body and cylinder chamber, due to previously by piston rod lifting the effect of weight, piston rod there will be the phenomenon of suddenly replying, so not only there is the anxiety undermining weight, but also be attended by the danger of operation and damage jack, because very likely cause weight resilience to be fallen when piston rod declines suddenly (contracting to cylinder chamber) and piston rod is hit and damages.
The problems referred to above suffer from industry for a long time and expect to solve, but be showed no all enlightenments solved this technical problem in Chinese patent literature and non-patent literature disclosed in up to now, for this reason, the applicant has done useful design, define technical scheme described below, and taking under secrecy provision, the experiment proved that it is practicable.
Summary of the invention
Task of the present invention is to provide a kind of and can controls oil return speed when pressure release and use and ensure that piston rod low is replied and avoids undermining by the slow oil returning valve structure of fast oil-feed of the lifting implement of the weight of lifting and protection piston rod in the cylinder chamber of oil cylinder.
Task of the present invention has been come like this, a kind of slow oil returning valve structure of fast oil-feed of lifting implement, comprise valve seat, valve position-limited lever, valve and spring, primary sealing area and secondary sealing area is configured with on valve seat and towards a side surface of valve, this first, an oil inlet and oil return recessed channel is configured with between secondary sealing area, on valve seat and around valve seat circumferencial direction with space state offer one group from the top of valve seat the through oil inlet and oil return hole to bottom, each oil inlet and oil return hole is corresponding with described oil inlet and oil return recessed channel and communicate with oil inlet and oil return recessed channel, in the central authorities of valve seat and the side towards valve is configured with a spring-loaded chamber, valve position-limited lever is fixed on the middle position of valve seat, valve is nested with on valve position-limited lever with quick condition, and match with described primary sealing area and secondary sealing area simultaneously, on this valve and correspond to the position of described oil inlet and oil return recessed channel offer one from the side of the thickness direction of valve a through fuel return hole at a slow speed to opposite side, spring is nested with on valve position-limited lever, and be positioned at spring-loaded chamber, the upper end of this spring is bearing on valve, and lower end is bearing on the chamber diapire in spring-loaded chamber, wherein: when spring elongates during jack-up valve, valve leaves described primary sealing area and secondary sealing area, the top of described oil inlet and oil return recessed channel is opened, and when the spring is compressed, valve contacts with primary sealing area and secondary sealing area, the closed upper part of oil inlet and oil return recessed channel.
In a specific embodiment of the present invention, on described valve seat and the middle position being positioned at described spring-loaded chamber offers a valve position-limited lever resigning hole, the lower end of described valve position-limited lever is through this valve position-limited lever resigning hole and limited by nut, and the upper end of valve position-limited lever leans out described valve and be resisted against the side of valve back to described valve seat.
In another specific embodiment of the present invention, be configured with a pressure cap in the described upper end of described valve position-limited lever, this pressure cap is resisted against the side of described valve back to described valve seat.
In another specific embodiment of the present invention, described spring is coil spring.
Technical scheme provided by the invention is when pressure release, due to spring-compressed, valve contacts with first, second sealing surface, pressure oil can only enter oil inlet and oil return hole from fuel return hole at a slow speed through oil inlet and oil return recessed channel, thus the piston rod of lifting implement can be made low descending, not only can protect by the object of lifting, and can avoid damaging piston rod; When to the cylinder chamber pump oil of oil cylinder, fluid enters from group oil inlet and oil return hole of valve seat, and jack-up valve under pressure and under the restoring force effect of spring, valve is made to leave first, second sealing surface, fluid enters the cylinder chamber of oil cylinder fast from oil inlet and oil return recessed channel, makes the quick lifting of piston rod.
Accompanying drawing explanation
Fig. 1 is embodiments of the invention constructional drawing.
Fig. 2 is the bottom schematic view of Fig. 1.
Fig. 3 is application examples schematic diagram of the present invention.
Detailed description of the invention
Refer to Fig. 1 and Fig. 2, in the following description every relate to upper end, lower end, towards upper, towards the statement of lower and so on directivity be all with the location status shown in Fig. 1.Give the valve seat 1 of a disc, this valve seat 1 towards on the surface of side and the circumferencial direction around valve seat 1 is configured with primary sealing area 11 and a secondary sealing area 12, the space between first, second sealing surface 11,12 is configured to oil inlet and oil return recessed channel 13.Valve seat 1 towards on side and be positioned at middle position and be configured with a spring-loaded chamber 15, a valve position-limited lever resigning hole 16 communicated with spring-loaded chamber 15 is offered at the middle position of the diapire corresponding to spring-loaded chamber 15, on valve seat 1 and around valve seat 1 circumferencial direction with space state offer one group from the top of valve seat 1 the through oil inlet and oil return hole 14 to bottom, each oil inlet and oil return hole 14 communicates with oil inlet and oil return recessed channel 13, and that is the position of oil inlet and oil return hole 14 on valve seat 1 corresponds to oil inlet and oil return recessed channel 13.
Although the quantity in aforesaid oil inlet and oil return hole 14 figure 2 illustrates six, the present invention can not be limited whereby, because the quantity in one group of oil inlet and oil return hole 14 can according to needing increase and decrease.
Give valve position-limited lever 2 and a valve 3, the lower end of this valve position-limited lever 2 is inserted and is leant out aforesaid valve position-limited lever resigning hole 16, a nut 21 has been screwed in the lower end of this valve position-limited lever 2, the upper end of valve position-limited lever 2 probes into the middle position (valve 3 offers spacing rod aperture) of valve 3 and expands to establish and be configured with a pressure cap 22, this pressure cap 22 is resisted against the surface of valve 3 towards upper side, and on pressure cap 22, be configured with an inner hexagonal hole 221, if the edge of the circumferencial direction of pressure cap 22 is formed outer-hexagonal face, so should be considered as and inner hexagonal hole 221 equivalent, because both all can operate valve position-limited lever 2 for instrument.Valve 3 is nested with on valve position-limited lever 2, and matches with aforesaid primary sealing area 11 and secondary sealing area 12, and this valve 3 offers a fuel return hole 31 at a slow speed, this at a slow speed fuel return hole 31 communicate with aforesaid oil inlet and oil return recessed channel 13.
If process negative thread on the hole wall of aforesaid valve position-limited lever resigning hole 16, and process position-limited lever outside thread in the lower end of valve position-limited lever 2, matched with negative thread by position-limited lever outside thread when assembling, then can yet be regarded as equally is a good scheme be connected with valve seat 1 by valve position-limited lever 2.
Give a spiral spring 4, this spring 4 to be nested with on valve position-limited lever 2 and to be positioned at spring-loaded chamber 15, and the upper end of this spring 4 is bearing on said valve 3, and the lower end of spring 4 is bearing on the chamber diapire in spring-loaded chamber 15.
Application examples:
Refer to Fig. 3 and composition graphs 1 and Fig. 2, figure 3 illustrates jack or transport the base 5 pushed up, this base 5 offers oil inlet and oil return road 51, and oil cylinder 6 is installed on base 5, in this oil cylinder 6, piston rod 61 is installed, on piston rod 61 and the bottom being positioned at piston rod 61 is provided with piston rod packing circle 611, make piston rod 61 be formed with the inwall of oil cylinder 6 to seal by piston rod packing circle 611, aforesaid oil inlet and oil return road 51 communicates with the cavity of resorption of oil cylinder 6, and the slow oil returning valve structure of fast oil-feed provided by the invention is arranged on the passage in this oil inlet and oil return road 51.
When will to the cavity of resorption fuel feeding of oil cylinder 6 time, under the operation of operator, make oil pump (not shown) pump oil, hydraulic oil enters oil inlet and oil return road 51, enter one group of oil inlet and oil return hole 14 on valve seat 1 of the present invention of hydraulic oil in oil inlet and oil return road 51 and enter oil inlet and oil return recessed channel 13, now due to the effect of spring 4, valve 3 is in and first, secondary sealing area 11, 12 states be separated, namely, the top of oil inlet and oil return recessed channel 13 is in opening, therefore the hydraulic oil coming from oil inlet and oil return hole 14 directly enters the cavity of resorption of oil cylinder 6, piston rod 61 is stretched outside the cylinder body of oil cylinder 6, by being arranged on the taking over a business weight (i.e. aforesaid object) upwards lifting of piston rod 61 top.When making previously to be returned to home position by the weight of lifting, that is when piston rod 61 will be made to bounce back in the cylinder body of oil cylinder 6, by operator, Hydraulic Pump (not shown) is operated, so under the effect of weight, the piston rod 61 of oil cylinder 6 is descending, now, under the pressure effect of the hydraulic oil in oil cylinder 6, make valve 3 towards the direction displacement of valve seat 1, spring 4 compresses, until valve 3 closes, also namely to the closed upper part of oil inlet and oil return recessed channel 13 with first, second sealing surface 11,12.In this condition, pressure oil in oil cylinder 6 can only introduce oil inlet and oil return recessed channel 13 by way of fuel return hole 31 at a slow speed, and draw from oil inlet and oil return hole 14, therefore the reply speed of piston rod 61 is comparatively slow, thus embodies the technique effect referred in the superincumbent technique effect hurdle of applicant.
Claims (4)
1.
a kind of slow oil returning valve structure of fast oil-feed of lifting implement, it is characterized in that comprising valve seat (1), valve position-limited lever (2), valve (3) and spring (4), upper at valve seat (1) and a side surface towards valve (3) is configured with primary sealing area (11) and secondary sealing area (12), this first, secondary sealing area (11, 12) an oil inlet and oil return recessed channel (13) is configured with between, valve seat (1) upper and around valve seat (1) circumferencial direction with space state offer one group from the top of valve seat (1) the through oil inlet and oil return hole (14) to bottom, each oil inlet and oil return hole (14) is corresponding with described oil inlet and oil return recessed channel (13) and communicate with oil inlet and oil return recessed channel (13), in the central authorities of valve seat (1) and the side towards valve (3) is configured with a spring-loaded chamber (15), valve position-limited lever (2) is fixed on the middle position of valve seat (1), valve (3) is nested with on valve position-limited lever (2) with quick condition, and match with described primary sealing area (11) and secondary sealing area (12) simultaneously, this valve (3) upper and offer in the position corresponding to described oil inlet and oil return recessed channel (13) one from the side of the thickness direction of valve (3) a through fuel return hole (31) at a slow speed to opposite side, spring (4) is nested with on valve position-limited lever (2), and be positioned at spring-loaded chamber (15), the upper end of this spring (4) is bearing on valve (3), and lower end is bearing on the chamber diapire in spring-loaded chamber (15), wherein: when spring (4) elongation time jack-up valve (3), valve (3) leaves described primary sealing area (11) and secondary sealing area (12), the top of described oil inlet and oil return recessed channel (13) is opened, and when spring (4) compresses, valve (3) contacts with primary sealing area (11) and secondary sealing area (12), the closed upper part of oil inlet and oil return recessed channel (13).
2.
the slow oil returning valve structure of fast oil-feed of lifting implement according to claim 1, it is characterized in that described valve seat (1) is upper and the middle position being positioned at described spring-loaded chamber (15) offers a valve position-limited lever resigning hole (16), the lower end of described valve position-limited lever (2) is through this valve position-limited lever resigning hole (16) and limited by nut (21), and the upper end of valve position-limited lever (2) leans out described valve (3) and be resisted against the side of valve (3) back to described valve seat (1).
3.
the slow oil returning valve structure of fast oil-feed of lifting implement according to claim 2, it is characterized in that being configured with a pressure cap (22) in the described upper end of described valve position-limited lever (2), this pressure cap (22) is resisted against the side of described valve (3) back to described valve seat (1).
4.
the slow oil returning valve structure of fast oil-feed of lifting implement according to claim 1, is characterized in that described spring (4) is coil spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310265878.3A CN103318801B (en) | 2013-06-28 | 2013-06-28 | Quick oil inletting and slow oil returning valve structure for lifting tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310265878.3A CN103318801B (en) | 2013-06-28 | 2013-06-28 | Quick oil inletting and slow oil returning valve structure for lifting tools |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103318801A CN103318801A (en) | 2013-09-25 |
| CN103318801B true CN103318801B (en) | 2015-06-24 |
Family
ID=49187905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310265878.3A Active CN103318801B (en) | 2013-06-28 | 2013-06-28 | Quick oil inletting and slow oil returning valve structure for lifting tools |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103318801B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103979450B (en) * | 2014-04-24 | 2016-03-30 | 陈洁 | A kind of jack retractor device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3536094A (en) * | 1968-03-12 | 1970-10-27 | Flavious E Manley Jr | Compressor valve |
| DE1901835B2 (en) * | 1969-01-15 | 1977-03-03 | Progress-Werk Oberkirch Ag, 7602 Oberkirch | Combined valve an radiator filler cap - combines pressure and vacuum reliefs in one piece check valve |
| WO2001002761A1 (en) * | 1999-07-06 | 2001-01-11 | Eusebi Impianti - S.R.L. | Valve for high pressure gas cylinders |
| CN2430590Y (en) * | 2000-07-10 | 2001-05-16 | 任学民 | One way throttle valve device |
| CN2592991Y (en) * | 2002-09-05 | 2003-12-17 | 程长征 | Non-return valve |
| CN102287558A (en) * | 2011-08-19 | 2011-12-21 | 青岛金黄海集装箱有限公司 | Check valve with safety valve |
| CN202138985U (en) * | 2011-07-13 | 2012-02-08 | 周爱兴 | Oil return speed adjustable device for jack |
| CN203319628U (en) * | 2013-06-28 | 2013-12-04 | 常熟通润汽车修理设备有限公司 | Rapid oil-taking and slow oil-returning valve structure for lifting tool |
-
2013
- 2013-06-28 CN CN201310265878.3A patent/CN103318801B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3536094A (en) * | 1968-03-12 | 1970-10-27 | Flavious E Manley Jr | Compressor valve |
| DE1901835B2 (en) * | 1969-01-15 | 1977-03-03 | Progress-Werk Oberkirch Ag, 7602 Oberkirch | Combined valve an radiator filler cap - combines pressure and vacuum reliefs in one piece check valve |
| WO2001002761A1 (en) * | 1999-07-06 | 2001-01-11 | Eusebi Impianti - S.R.L. | Valve for high pressure gas cylinders |
| CN2430590Y (en) * | 2000-07-10 | 2001-05-16 | 任学民 | One way throttle valve device |
| CN2592991Y (en) * | 2002-09-05 | 2003-12-17 | 程长征 | Non-return valve |
| CN202138985U (en) * | 2011-07-13 | 2012-02-08 | 周爱兴 | Oil return speed adjustable device for jack |
| CN102287558A (en) * | 2011-08-19 | 2011-12-21 | 青岛金黄海集装箱有限公司 | Check valve with safety valve |
| CN203319628U (en) * | 2013-06-28 | 2013-12-04 | 常熟通润汽车修理设备有限公司 | Rapid oil-taking and slow oil-returning valve structure for lifting tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103318801A (en) | 2013-09-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2011040808A3 (en) | Adjustable shock absorber | |
| CN109026902B (en) | Multi-damping-hole-type buffer hydraulic cylinder with movable cylinder head | |
| CN103318801B (en) | Quick oil inletting and slow oil returning valve structure for lifting tools | |
| CN203319628U (en) | Rapid oil-taking and slow oil-returning valve structure for lifting tool | |
| CN103133435A (en) | Hydraulic energy accumulator | |
| CN204201200U (en) | Safety pressure-limiting valve | |
| KR20150021165A (en) | Hydro-pneumatic type relief valve | |
| CN109630482B (en) | Spring piston type pressure accumulator with one-way valve | |
| CN204729389U (en) | A kind of oil hydraulic cylinder with pressure-reducing cushioning | |
| KR101151377B1 (en) | hydraulic cylinder internal mounting check valve | |
| CN202302130U (en) | Novel tubular type check valve capable of bearing hydraulic impact | |
| CN106762947B (en) | A kind of single-action hydraulic cylinder shown with internal leakage | |
| CN204113790U (en) | Relief valve | |
| CN105712237A (en) | Hydraulic jack | |
| FI20120016A (en) | The impactor, | |
| CN204900958U (en) | Ventilative valve with shock -absorbing function | |
| CN103925259B (en) | A kind of liquid gas pressure cylinder piston | |
| CN201401391Y (en) | Hydrocylinder unloading device | |
| CN202418311U (en) | Clutch master cylinder | |
| CN103216672A (en) | Muted piston-type valve clack and check valve | |
| CN113757215A (en) | Safety relief valve for piston type double-acting hydraulic cylinder or hydraulic jack | |
| US987313A (en) | Pump. | |
| CN204140544U (en) | A kind of hydraulic jack | |
| CN104564895A (en) | Single-acting plunger cylinder and forklift | |
| CN112065806A (en) | Hydraulic cylinder unloading structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |