CN104006252B - Novel forklift three-way connector for hydraulic pipeline - Google Patents
Novel forklift three-way connector for hydraulic pipeline Download PDFInfo
- Publication number
- CN104006252B CN104006252B CN201410249425.6A CN201410249425A CN104006252B CN 104006252 B CN104006252 B CN 104006252B CN 201410249425 A CN201410249425 A CN 201410249425A CN 104006252 B CN104006252 B CN 104006252B
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- China
- Prior art keywords
- oilhole
- oil cylinder
- external thread
- cylinder interface
- thread section
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
- F16L41/16—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe the branch pipe comprising fluid cut-off means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
Novel forklift three-way connector for hydraulic pipeline disclosed by the invention, comprise fittings body, described fittings body is provided with oil cylinder interface, guiding valve is movably equipped with in described oil cylinder interface, the cylindrical wall of oil cylinder interface is provided with rear external thread section and front external thread section, the end extension of described oil cylinder interface is provided with path joint, path joint is connected with end cap, guiding valve comprises activity and is located at base in oil cylinder interface, and the shaping valve body be located on base, the sidewall of valve body is provided with the first oilhole, the end of valve body is provided with the second oilhole, described first oilhole, second oilhole is all arranged in being communicated with oil cylinder interface, the left-handed thread that rear external thread section is arranged by correspondence and right-handed thread cooperation are formed, rear external thread section is respectively equipped with tightening nut and locking nut.The present invention is simple and reasonable, can avoid joint be subject to hydraulic oil impacting with high pressure, can ensure again hydraulic pipe line normal work, guiding valve action sensitivity is higher, sealing effect is better.
Description
Technical field
The present invention relates to hydraulic pipeline of fork truck interconnection technique field, particularly a kind of novel forklift three-way connector for hydraulic pipeline.
Background technique
Fork truck is because transporting goods more for convenience, comparatively extensive in machinery industry application, by popular known and common.The power that fork truck provides goods to move mainly through a set of hydraulic system, therefore the hydraulic system of fork truck needs higher reliability.Because the hydraulic system of fork truck is connected by a lot of pipelines, and pipeline connecting direction position is different, needs to adopt numerous joint to transfer.When goods moved by fork truck, larger instantaneous pressure can be produced in pipeline, the impact caused pipeline is larger, particularly pipe joint place impacts larger, if pipe joint is in for a long time and is subject to moment impact, may joint looseness be caused, even get loose, therefore there is the potential safety hazard of the accident that meets accident.
The applicant have submitted to State Intellectual Property Office the patent application that application number is 201120228800.0 on June 30th, 2011, disclose one " three-way connector for hydraulic pipeline of fork truck ", as shown in Figure 1, its structure comprises fittings body 1 ', described fittings body 1 ' is respectively equipped with oil cylinder interface 10 ', filler opening 20 ' and split-flow opening 30 ', in described oil cylinder interface 10 ', activity is inserted with guiding valve 11 ', spring 12 ' is connected with between described guiding valve 11 ' and fittings body 1 ', the sidewall of described guiding valve 11 ' is provided with oilhole 111 ', described oilhole 111 ' is connected with oil cylinder interface 10 ', described guiding valve 11 ' is connected by connecting pin 40 ' with between fittings body 1 ', the cylindrical wall of described oil cylinder interface 10 ' is provided with rear external thread section 13 ' and front external thread section 14 ', described rear external thread section 13 ' has been threaded nut 131 ', annular groove 15 ' is provided with between described rear external thread section 13 ' and front external thread section 14 ', described annular groove 15 ' has been nested with pad 151 ' and O-ring seal 152 ', described pad 151 ' is arranged between nut 131 ' and O-ring seal 152 '.Its working principle is: during installation, oil cylinder interface 10 ' is connected with lift cylinder by front external thread section 14 ', filler opening 20 ' is connected with the interface (or solenoid valve) of hydraulic oil unit, split-flow opening 30 ' is connected with other oil pipes, wherein, front external thread section 14 ' precession lift cylinder interface, until the end face that O-ring seal 152 ' compresses lift cylinder just stops screwing action, now rotating nut 131 ', nut 131 ' is utilized to extrude pad 151 ', the stressed rear extruding O-ring seal 152 ' of pad 151 ', O-ring seal 152 ' is by external force extrusion-deformation, thus O-ring seal 152 ' is fully contacted with the end face of lift cylinder, form a sealing surface, thus play seal action, during work, when producing instantaneous pressure in lift cylinder, guiding valve 11 ' can move to the inner end of oil cylinder interface 10 ' under the effect of highly pressurised liquid, owing to having oilhole 111 ' on guiding valve 11 ' sidewall, when guiding valve 11 ' is mobile to fittings body 1 ' inside, oilhole 111 ' and fittings body 1 ' contact internal walls, path blockade between lift cylinder and fittings body 1 ', the now oil cylinder interface 10 ' temporary close of fittings body 1 ', therefore fittings body 1 ' is subject to hydraulic oil impacting with high pressure in the joint with lift cylinder is avoided, protect the connection reliability of joint, prevent the safety hazards caused because joint pitches, when oil pressure in lift cylinder reduces, guiding valve 11 ' is returning position under the effect of spring 12 ', the conducting again of the path between lift cylinder and fittings body.
But, found by practical application, above-mentioned " three-way connector for hydraulic pipeline of fork truck " also has the following disadvantages: first, because oilhole 111 ' is arranged on the sidewall of guiding valve 11 ', when guiding valve 11 ' is mobile to fittings body 1 ' inside, the contact internal walls of oilhole 111 ' and fittings body 1 ', the oil cylinder interface 10 ' temporary close of fittings body 1 ', hydraulic oil in lift cylinder cannot be entered in fittings body 1 ', cause the oil circuit of whole tee union to occur short time disruption, thus have impact on the normal work of whole hydraulic pipe line; The second, for preventing guiding valve 11 ' from dropping in oil cylinder interface 10 ', between guiding valve 11 ' with fittings body 1 ', adopt connecting pin 40 ' to be connected, because connecting pin 40 ' is rigid construction, deformation effects is poor, and cause when guiding valve 11 ' is subject to the impact of hydraulic oil, action sensitivity is lower; 3rd, due between nut 131 ' with rear external thread section 13 ' for being threaded, when vibrating, impacting, the trend that nut 131 ' can loosen, thus the squeeze pressure reduced pad 151 ', and then cause O-ring seal 152 ' cannot fully contact with the end face of lift cylinder, affect sealing effect.
Summary of the invention
The object of the invention is to the defect for prior art and deficiency, provide a kind of simple and reasonable, can avoid joint be subject to hydraulic oil impacting with high pressure, can ensure that the normal work of hydraulic pipe line, guiding valve action sensitivity are higher, the good novel forklift three-way connector for hydraulic pipeline of sealing effect again.
For achieving the above object, the present invention is by the following technical solutions:
Novel forklift three-way connector for hydraulic pipeline of the present invention, comprise fittings body, described fittings body is respectively equipped with oil cylinder interface, filler opening and split-flow opening, guiding valve is movably equipped with in described oil cylinder interface, spring is connected with between described guiding valve and fittings body, the cylindrical wall of described oil cylinder interface is provided with rear external thread section and front external thread section, annular groove is provided with between described rear external thread section and front external thread section, described annular groove has been nested with pad and O-ring seal, the end extension of described oil cylinder interface is provided with path joint, described path joint is connected with end cap, described guiding valve comprises activity and is located at base in oil cylinder interface, and the shaping valve body be located on base, the end of described valve body is passed described end cap and is stretched out in the outside of fittings body, the sidewall of described valve body is provided with the first oilhole, the end of valve body is provided with the second oilhole, described first oilhole, second oilhole is all arranged in being communicated with oil cylinder interface, described first oilhole diameter is greater than the diameter of the second oilhole, the left-handed thread that described rear external thread section is arranged by correspondence and right-handed thread cooperation are formed, described rear external thread section is provided with the tightening nut with left hand thread engagement, and the locking nut to coordinate with right-handed thread, described pad is arranged between tightening nut and O-ring seal.
Further, the diameter of described first oilhole is the twice of the second oilhole diameter.
Further, described tightening nut and locking nut are hexagon nut, and the diagonal distance of described tightening nut is greater than the outer annular diameter of described pad, the outer annular diameter of described pad is greater than the outer annular diameter of described O-ring seal, and the outside diameter of described O-ring seal is slightly larger than described front external thread section outer annular diameter.
Further, described O-ring seal adopts rubber material to make.
Beneficial effect of the present invention is: compared with prior art, the present invention is by the extended path joint in the end of oil cylinder interface, described path joint is connected end cap is set, described guiding valve comprises activity and is located at base in oil cylinder interface, and the shaping valve body be located on base, the end of described valve body is passed described end cap and is stretched out in the outside of fittings body, coordinated with end cap by base, both effectively prevent guiding valve to drop out from oil cylinder interface, simultaneously, owing to eliminating connecting pin of the prior art, make guiding valve action when being subject to oil shock more rapid, action sensitivity is higher,
By arranging the first oilhole on the sidewall of valve body, the end of valve body is provided with the second oilhole, described first oilhole, second oilhole is all arranged in being communicated with oil cylinder interface, when valve body is mobile to fittings body inside because being subject to oil shock, path blockade between first oilhole and oil cylinder interface, because described first oilhole diameter is greater than the diameter of the second oilhole, most of fluid in lift cylinder is blocked, thus effectively prevent joint and be subject to oil shock, simultaneously, fraction fluid in lift cylinder still enters in fittings body through the second oilhole, oil cylinder interface is made to be on state with lift cylinder all the time, and then ensure that the hydraulic pipe line moment can normally work,
By being provided with the left-handed thread that arranged by correspondence and right-handed thread coordinates the rear external thread section formed, and be provided with on rear external thread section and the tightening nut of left hand thread engagement and the locking nut that coordinates with right-handed thread, when tightening nut extruding pad, it is identical with the tightening direction of locking nut that pine due to tightening nut moves back direction, thus tightening nut cannot be loosened, ensure that the squeeze pressure of tightening nut to pad, make O-ring seal be in pressured state all the time, and then make sealing effect of the present invention better.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of existing a kind of three-way connector for hydraulic pipeline of fork truck;
Fig. 2 is overall structure schematic diagram of the present invention.
In figure:
1,1 ', fittings body; 10,10 ', oil cylinder interface; 20,20 ', filler opening; 30,30 ', split-flow opening; 11,11 ', guiding valve; 12,12 ', spring; 13,13 ', rear external thread section; 14,14 ', front external thread section; 15,15 ', annular groove; 151,151 ', pad; 152,152 ', O-ring seal; 16, path joint; 17, end cap; 111, base; 112, valve body; 113, the first oilhole; 114, the second oilhole; 131, tightening nut; 132, locking nut; 111 ', oilhole; 40 ', connecting pin; 131 ', nut.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Novel forklift three-way connector for hydraulic pipeline as shown in Figure 2, comprise fittings body 1, described fittings body 1 is respectively equipped with oil cylinder interface 10, filler opening 20 and split-flow opening 30, guiding valve 11 is movably equipped with in described oil cylinder interface 10, spring 12 is connected with between described guiding valve 11 and fittings body 1, the cylindrical wall of described oil cylinder interface 10 is provided with rear external thread section 13 and front external thread section 14, be provided with annular groove 15 between described rear external thread section 13 and front external thread section 14, described annular groove 15 has been nested with pad 151 and O-ring seal 152.
The end extension of described oil cylinder interface 10 is provided with path joint 16, described path joint 16 is connected with end cap 17, for ensureing sealing effect, the present invention is preferably threaded, described guiding valve 11 comprises activity and is located at base 111 in oil cylinder interface 10, and the shaping valve body 112 be located on base 111, the end of described valve body 112 is passed described end cap 17 and is stretched out in the outside of fittings body 1, the sidewall of described valve body 112 is provided with the first oilhole 113, the end of valve body 112 is provided with the second oilhole 114, described first oilhole 113, second oilhole 114 is all arranged in being communicated with oil cylinder interface 10, the diameter of described first oilhole 113 is greater than the diameter of the second oilhole 114, specifically, the diameter of described first oilhole 113 is twices of the second oilhole 114 diameter, the left-handed thread that described rear external thread section 13 is arranged by correspondence and right-handed thread cooperation are formed, described rear external thread section 13 is provided with the tightening nut 131 with left hand thread engagement, and the locking nut 132 to coordinate with right-handed thread, described pad 151 is arranged between tightening nut 131 and O-ring seal 152.
The above forms agent structure of the present invention, mounting type of the present invention and working principle same as the prior art, therefore not to repeat here.
The present invention is coordinated with end cap 17 by base 111, both effectively prevent guiding valve 11 to drop out from oil cylinder interface 10, meanwhile, owing to eliminating connecting pin 40 ' of the prior art, make guiding valve 11 action when being subject to oil shock more rapid, action sensitivity is higher.
By arranging the first oilhole 113 and the second oilhole 114, described first oilhole 113, second oilhole 114 is all arranged in being communicated with oil cylinder interface 10, when valve body 112 is mobile to fittings body 1 inside because being subject to oil shock, path blockade between first oilhole 113 and oil cylinder interface 10, because described first oilhole 113 diameter is greater than the diameter of the second oilhole 114, most of fluid in lift cylinder is blocked, thus effectively prevent joint and be subject to oil shock, simultaneously, fraction fluid in lift cylinder still enters in fittings body 1 through the second oilhole 114, oil cylinder interface 10 is made to be on state with lift cylinder all the time, and then ensure that the hydraulic pipe line moment can normally work.The diameter that the present invention arranges described first oilhole 113 is the twice of the second oilhole 114 diameter, therefore when valve body 112 is subject to impacting with high pressure, in lift cylinder, the fluid of 2/3rds is blocked, and the fluid of residue 1/3rd enters in fittings body through the second oilhole 114.
By being provided with the left-handed thread that arranged by correspondence and right-handed thread coordinates the rear external thread section 13 formed, and on rear external thread section 13, be provided with the tightening nut 131 with left hand thread engagement, and the locking nut 132 to coordinate with right-handed thread, when tightening nut 131 extrudes pad 151, it is identical with the tightening direction of locking nut 132 that pine due to tightening nut 131 moves back direction, thus tightening nut 131 cannot be loosened, ensure that the squeeze pressure of tightening nut 131 pairs of pads, O-ring seal 152 is made to be in pressured state all the time, and then make sealing effect of the present invention better.
For ensure pad 151 and O-ring seal 152 stressed more even, described tightening nut 131 and locking nut 132 are hexagon nut, and the diagonal distance of described tightening nut 131 is greater than the outer annular diameter of described pad 151, the outer annular diameter of described pad 151 is greater than the outer annular diameter of described O-ring seal 152, and the outside diameter of described O-ring seal 152 is slightly larger than described front external thread section 14 outer annular diameter.Described O-ring seal 152 adopts rubber material to make, and during pressurized, deformability is comparatively strong, and sealing effect is better, and working life is longer.
The above is only better embodiment of the present invention, therefore all equivalences done according to structure, feature and the principle described in patent claim of the present invention change or modify, and are included in patent claim of the present invention.
Claims (4)
1. a novel forklift three-way connector for hydraulic pipeline, comprise fittings body (1), described fittings body (1) is respectively equipped with oil cylinder interface (10), filler opening (20) and split-flow opening (30), guiding valve (11) is movably equipped with in described oil cylinder interface (10), spring (12) is connected with between described guiding valve (11) and fittings body (1), the cylindrical wall of described oil cylinder interface (10) is provided with rear external thread section (13) and front external thread section (14), annular groove (15) is provided with between described rear external thread section (13) and front external thread section (14), described annular groove (15) has been nested with pad (151) and O-ring seal (152), it is characterized in that: the end extension of described oil cylinder interface (10) is provided with path joint (16), described path joint (16) is connected with end cap (17), described guiding valve (11) comprises activity and is located at base (111) in oil cylinder interface (10), and the shaping valve body (112) be located on base (111), the end of described valve body (112) is passed described end cap (17) and is stretched out in the outside of fittings body (1), the sidewall of described valve body (112) is provided with the first oilhole (113), the end of valve body (112) is provided with the second oilhole (114), described first oilhole (113), second oilhole (114) is all arranged in being communicated with oil cylinder interface (10), the diameter of described first oilhole (113) is greater than the diameter of the second oilhole (114), the left-handed thread that described rear external thread section (13) is arranged by correspondence and right-handed thread cooperation are formed, described rear external thread section (13) is provided with and the tightening nut of left hand thread engagement (131), and the locking nut (132) to coordinate with right-handed thread, described pad (151) is arranged between tightening nut (131) and O-ring seal (152).
2. novel forklift three-way connector for hydraulic pipeline according to claim 1, is characterized in that: the diameter of described first oilhole (113) is the twice of the second oilhole (114) diameter.
3. novel forklift three-way connector for hydraulic pipeline according to claim 1, it is characterized in that: described tightening nut (131) and locking nut (132) are hexagon nut, and the diagonal distance of described tightening nut (131) is greater than the outer annular diameter of described pad (151), the outer annular diameter of described pad (151) is greater than the outer annular diameter of described O-ring seal (152), and the outside diameter of described O-ring seal (152) is slightly larger than described front external thread section (14) outer annular diameter.
4. novel forklift three-way connector for hydraulic pipeline according to claim 1, is characterized in that: described O-ring seal (152) adopts rubber material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410249425.6A CN104006252B (en) | 2014-06-06 | 2014-06-06 | Novel forklift three-way connector for hydraulic pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410249425.6A CN104006252B (en) | 2014-06-06 | 2014-06-06 | Novel forklift three-way connector for hydraulic pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104006252A CN104006252A (en) | 2014-08-27 |
| CN104006252B true CN104006252B (en) | 2015-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410249425.6A Active CN104006252B (en) | 2014-06-06 | 2014-06-06 | Novel forklift three-way connector for hydraulic pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104006252B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108557714B (en) * | 2018-07-11 | 2019-12-20 | 宁波管通机械有限公司 | Explosion-proof type fork truck hydraulic line tee bend connects |
| CN114635177B (en) * | 2022-03-07 | 2023-09-29 | 南京航空航天大学 | Nozzle and method for assisting electrolytic polishing by abrasive particles on inner surface of metal runner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2160048Y (en) * | 1993-05-19 | 1994-03-30 | 沈英才 | Non-return fast pipe joint for oxygen and acetylene |
| CN202144923U (en) * | 2011-06-30 | 2012-02-15 | 宁波管通机械有限公司 | Three-way connector for hydraulic pipeline of fork truck |
| EP2615387A1 (en) * | 2011-02-21 | 2013-07-17 | Samsung Electronics Co., Ltd | Method for connecting refrigerant pipe and air conditioner having the same structure |
| KR20130125317A (en) * | 2012-05-08 | 2013-11-18 | 이하라 사이언스 가부시키가이샤 | Joint |
| CN103453259A (en) * | 2012-06-02 | 2013-12-18 | 宁波管通机械有限公司 | Forklift lifting oil cylinder three-way joint |
| CN203979731U (en) * | 2014-06-06 | 2014-12-03 | 宁波管通机械有限公司 | Novel forklift three-way connector for hydraulic pipeline |
-
2014
- 2014-06-06 CN CN201410249425.6A patent/CN104006252B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2160048Y (en) * | 1993-05-19 | 1994-03-30 | 沈英才 | Non-return fast pipe joint for oxygen and acetylene |
| EP2615387A1 (en) * | 2011-02-21 | 2013-07-17 | Samsung Electronics Co., Ltd | Method for connecting refrigerant pipe and air conditioner having the same structure |
| CN202144923U (en) * | 2011-06-30 | 2012-02-15 | 宁波管通机械有限公司 | Three-way connector for hydraulic pipeline of fork truck |
| KR20130125317A (en) * | 2012-05-08 | 2013-11-18 | 이하라 사이언스 가부시키가이샤 | Joint |
| CN103453259A (en) * | 2012-06-02 | 2013-12-18 | 宁波管通机械有限公司 | Forklift lifting oil cylinder three-way joint |
| CN203979731U (en) * | 2014-06-06 | 2014-12-03 | 宁波管通机械有限公司 | Novel forklift three-way connector for hydraulic pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104006252A (en) | 2014-08-27 |
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