CN103448288B - Press machine draw bar fluid-pressure straining device - Google Patents
Press machine draw bar fluid-pressure straining device Download PDFInfo
- Publication number
- CN103448288B CN103448288B CN201310363099.7A CN201310363099A CN103448288B CN 103448288 B CN103448288 B CN 103448288B CN 201310363099 A CN201310363099 A CN 201310363099A CN 103448288 B CN103448288 B CN 103448288B
- Authority
- CN
- China
- Prior art keywords
- plunger
- pull bar
- strainer
- plunger cylinder
- cylinder
- 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.)
- Expired - Fee Related
Links
Landscapes
- Press Drives And Press Lines (AREA)
Abstract
The invention discloses a kind of press machine draw bar fluid-pressure straining device, comprise the pull bar hydraulic tensioning device be separately positioned on the upside of forcing press on every root pull bar top, pull bar hydraulic tensioning device comprises and cap nut, strainer plunger cylinder, plunger, at least two block pressur plates, unloader and three pieces of equal height cushion blocks, described three pieces of equal height cushion blocks are arranged on the pull-rod nut surrounding at press crown top in a triangle, pull bar top is through plunger, and strainer plunger cylinder is supported on three equal height cushion blocks; And being resisted against on the upside of plunger on the downside of cap nut, the hydraulic oil that hydraulic power unit exports is divided into multichannel by flow distributor and is connected with the pipe joint be fixed on strainer plunger cylinder respectively, and strainer plunger cylinder also leads to unloader.Structure of the present invention is simple, small and exquisite, and operating efficiency is high, can four pull bars of simultaneously tensioning pressure machine, makes it not by eccentric load, improves precision and the rigidity of forcing press, greatly reduce manufacturing cost.
Description
Technical field
The present invention relates to a kind of pre-load means of press machine draw bar, especially for elongating pull bar when a kind of forcing press is installed, after pull bar unloading, part of pressure machine is connected tightr, and make the take-up device of the press machine draw bar of many pull bar uniform stresseds, belong to metal forming machinery installation accessories technical field.
Background technology
The entablature of large-tonnage straight side press or frame type hydraulic press, four pull bars that the armstand of both sides and sill are arranged by its left and right sides link into an integrated entity, straight side press or frame type hydraulic press are when large load condition pressing component, it is larger that four pull bars of its both sides bear load, after pull bar is installed, loading onto take-up device in pull bar upper end makes pull bar produce the elastic deformation of extending, pull-rod nut bottom surface is caused to depart from supporting plane, now can coil and strain at stem nut, take-up device unloading back stay restores to the original state, thus make the entablature of forcing press, armstand is connected tightr with sill, four pull bars stressed evenly, improve the compacting precision of forcing press or hydraulic press, prevent due to four pull bar discontinuity, the wherein equipment breakdown that is easily pulled off of stressed the maximum.
The pull bar of existing large tonnage pressing machine adopts pull bar hydraulic tensioning device to apply pulling force one by one to single pull bar and strains, efficiency is very low, and easily cause the tightening force of a pull bar excessive, other three are difficult to tension, forcing press only has single pull bar to strain, pull bar and fuselage are in unbalance loading state, cause forcing press precision sideslip, and there will be pull bar and break and the problems such as part of pressure machine damage.
Existing pull bar hydraulic tensioning device by outer support cylinder, inner cylinder body, threaded plunger, inner support seat and and all multiple component compositions such as cap, both bulk, expensive, the pull bar hydraulic tensioning as 1250T forcing press is thought highly of and is reached 1356Kg, and hoisting transportation is inconvenient; During use, need larger installing space, could place steadily and carry out tensile ties.The screw thread of the threaded plunger of hydraulic tensioning device must be equipped with different screw threads by the forcing press of different tonnage, poor universality, increases manufacturing cost and the maintenance cost of hydraulic tensioning device.
the Chinese invention patent of CN202239427 discloses one " the many drag bar pre-fastening devices of great tonnage hydraulic machine ", the connector of this device is bulky, the internal thread of connector lower end is connected with pull bar upper end, and connector upper end passes hydraulic pre-tightening cylinder piston and is connected with locking member.This patent of invention still adopts the pattern of aforesaid single pull bar pretension one by one, inevitably there is the defect of aforementioned pull bar hydraulic tensioning device.Connector is bulky, and the internal thread of its lower end must be joined by the pull rod screw list that different tonnage presses machine is different, lacks versatility, increases manufacturing cost.Summary of the invention
The object of this invention is to provide the press machine draw bar fluid-pressure straining device that a kind of structure is simple, can strain many pull bars simultaneously.
The present invention is achieved by the following technical programs:
A kind of press machine draw bar fluid-pressure straining device, comprise the pull bar hydraulic tensioning device be separately positioned on the upside of forcing press on every root pull bar top, described pull bar hydraulic tensioning device comprises and cap nut, strainer plunger cylinder, plunger, at least two block pressur plates, unloader and three pieces of equal height cushion blocks, described three pieces of equal height cushion blocks are arranged on the pull-rod nut surrounding at press crown top in a triangle, plunger is arranged in strainer plunger cylinder, pull bar top is through plunger, and strainer plunger cylinder is supported on three equal height cushion blocks; And cap nut is screwed on termination, pull bar upper end, and be resisted against on the upside of plunger on the downside of cap nut; At least two block pressur plate one end are separately fixed on the upside of strainer plunger cylinder, and the pressing plate other end points to the axial centre of strainer plunger cylinder; The hydraulic oil that hydraulic power unit exports is divided into multichannel by flow distributor and is connected with the pipe joint be fixed on strainer plunger cylinder respectively.
Object of the present invention can also be realized further by following technical measures.
Aforesaid press machine draw bar fluid-pressure straining device, wherein said plunger is multiple stage stepped column plug, be provided with several sealing ring between plunger and strainer plunger cylinder endoporus, plunger central authorities are provided with the plunger axially extending bore that aperture is greater than pull bar external diameter, and pull bar upper end is through described plunger axially extending bore.
Aforesaid press machine draw bar fluid-pressure straining device, the strainer plunger cylinder be wherein enclosed within every root pull bar top communicates with flow distributor output respectively by pipe joint, connecting line, flow distributor input leads to hydraulic power unit, and strainer plunger cylinder also leads to unloader.
Structure of the present invention is simple, operating efficiency is high, can four pull bars of simultaneously tensioning pressure machine, make it not by eccentric load, improve precision and the rigidity of forcing press, every root pull bar hydraulic tensioning device is all communicated with flow distributor by unloader, effectively can prevent the too high damage the present invention of pressure fuel pump.Flow distributor of the present invention outputs to the uniform flow of four pull bar hydraulic tensioning devices, can ensure each pull bar hydraulic tensioning device tensile ties reposefully, and make the tension speed of pull bar hydraulic tensioning device reach consistent, ensure every root pull bar uniform force.The present invention's three contour back-up blocks replace the support tube of existing huge structure, ensure four pull bar hydraulic tensioning devices tensile ties in the parallel state.Compact structure of the present invention, easy to maintenance.The pull bar hydraulic tensioning device used as 1250T forcing press is reduced to from existing ponderable 1356Kg only has 285Kg, and weight decreases 79%, both easy to use, greatly reduces manufacturing cost again.
Advantage and disadvantage of the present invention, by for illustration and explanation for the non-limitative illustration passing through preferred embodiment below, these embodiments, only provide as an example with reference to accompanying drawing.
Accompanying drawing explanation
Fig. 1 is pull bar hydraulic tensioning device half sectional view of the present invention;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is using state sketch of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
As depicted in figs. 1 and 2, the present invention includes the pull bar hydraulic tensioning device be separately positioned on the upside of forcing press on every root pull bar top, described pull bar hydraulic tensioning device comprises and cap nut 1, strainer plunger cylinder 2, plunger 3, at least two block pressur plates 4, unloader 5 and three pieces of equal height cushion blocks 6, the cylinder that equal height cushion block 6 adopts turnery processing to become highly equal, three equal height cushion blocks 6 are arranged on pull-rod nut 7 surrounding being positioned at press crown 20 top in a triangle, plunger 3 is arranged in strainer plunger cylinder 2, pull bar 8 top is through plunger 3, each strainer plunger cylinder 2 is supported on three highly equal equal height cushion blocks 6, four pull bar hydraulic tensioning devices tensile ties 8 in the parallel state can be guaranteed, guarantee four pull bar 8 uniform force.And cap nut 1 is screwed on termination, pull bar 8 upper end, and be resisted against on the downside of cap nut 1 on the upside of plunger 3, two block pressur plate 4 one end are separately fixed on the upside of strainer plunger cylinder 2, pressing plate 4 other end points to the axial centre of strainer plunger cylinder 2, prevent when carrying of the present invention, plunger 3 drops out strainer plunger cylinder 2.
Plunger 3 is multiple stage stepped column plug, and be arranged in the strainer plunger cylinder counterbore 21 of open upper end, plunger 3 central authorities are provided with the plunger axially extending bore 31 that aperture is greater than pull bar external diameter.Upper sealing ring 101 is inlaid in the large end radial slot of plunger, strainer plunger cylinder 2 lower end is provided with axially extending bore 22 under the cylinder body that plunger small end passes, lower seal 102 is inlaid under cylinder body in axially extending bore radial slot, upper sealing ring 101 and lower seal 102 preferably Yx RunddichtringO.Form oiling cavity 23 between plunger middle bench 32 and strainer plunger cylinder counterbore 21 lower end, unloader 5 communicates with oiling cavity 23.
As shown in Figure 3, the hydraulic oil that hydraulic power unit 10 exports is divided into four tunnels by flow distributor 9 and is connected with the pipe joint 11 be fixed on strainer plunger cylinder 2 respectively.Flow distributor 9 outputs to the uniform flow of four pull bar hydraulic tensioning devices, can ensure each pull bar hydraulic tensioning device tensile ties 8 reposefully, and make the tension speed of pull bar hydraulic tensioning device reach consistent, make every root pull bar 8 uniform force.
The strainer plunger cylinder 2 be enclosed within every root pull bar 8 top communicates with flow distributor 9 output respectively by pipe joint 11, connecting line 103, and flow distributor 9 input leads to hydraulic power unit 10, and strainer plunger cylinder 2 also leads to unloader 5.
Before pretension, use spanner to coil respectively and strain at stem nut 7 and and cap nut 1.Start hydraulic power unit 10, the hydraulic oil input flow rate distributor 9 of the 40MPa that hydraulic power unit 10 exports, enter the oiling cavity 23 of strainer plunger cylinder lower end respectively by corresponding connecting line 103, pipe joint 11 from four outputs of flow distributor 9, four plungers 3 synchronously rise, four pull bars 8 are synchronously elongated, dish strains at stem nut 7 again respectively, completes the tension of four pull bars 8.Then close hydraulic power unit 10, open on each strainer plunger cylinder 2 unloader 5, the off-load of pull bar hydraulic tensioning device, plunger 3 drops to initial position, can remove the present invention.
In addition to the implementation, the present invention can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of application claims.
Claims (1)
1. a press machine draw bar fluid-pressure straining device, comprise pull bar hydraulic tensioning device, described pull bar hydraulic tensioning device comprises and cap nut, strainer plunger cylinder, plunger, at least two block pressur plates, unloader and three pieces of equal height cushion blocks, described three pieces of equal height cushion blocks are arranged on the pull-rod nut surrounding at press crown top in a triangle, plunger is arranged in strainer plunger cylinder, pull bar top is through plunger, and strainer plunger cylinder is supported on three equal height cushion blocks; And cap nut is screwed on termination, pull bar upper end, and be resisted against on the upside of plunger on the downside of cap nut; At least two block pressur plate one end are separately fixed on the upside of strainer plunger cylinder, and the pressing plate other end points to the axial centre of strainer plunger cylinder; Described plunger is multiple stage stepped column plug, is provided with several sealing ring between described plunger and strainer plunger cylinder endoporus, and plunger central authorities are provided with the plunger axially extending bore that aperture is greater than pull bar external diameter, and pull bar upper end is through described plunger axially extending bore; It is characterized in that: pull bar hydraulic tensioning device is separately positioned on the upside of forcing press on every root pull bar top, the hydraulic oil that hydraulic power unit exports is divided into multichannel by flow distributor and is connected with the pipe joint be fixed on strainer plunger cylinder respectively; The strainer plunger cylinder be enclosed within every root pull bar top communicates with flow distributor output respectively by pipe joint, connecting line, and flow distributor input leads to hydraulic power unit, and strainer plunger cylinder also leads to unloader.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310363099.7A CN103448288B (en) | 2013-08-20 | 2013-08-20 | Press machine draw bar fluid-pressure straining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310363099.7A CN103448288B (en) | 2013-08-20 | 2013-08-20 | Press machine draw bar fluid-pressure straining device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103448288A CN103448288A (en) | 2013-12-18 |
| CN103448288B true CN103448288B (en) | 2015-09-02 |
Family
ID=49731315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310363099.7A Expired - Fee Related CN103448288B (en) | 2013-08-20 | 2013-08-20 | Press machine draw bar fluid-pressure straining device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103448288B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2732385Y (en) * | 2004-09-29 | 2005-10-12 | 天津市天锻压力机有限公司 | Combined machine body drag bar pre-fastening device |
| CN200992468Y (en) * | 2006-12-12 | 2007-12-19 | 合肥锻压机床有限公司 | Combined frame type body hydraulic pre-fastening device |
| CN201102227Y (en) * | 2007-08-23 | 2008-08-20 | 上海电机学院 | Integral hydraulic drawing device |
| CN201389771Y (en) * | 2009-04-24 | 2010-01-27 | 十堰海岚机床有限公司 | Hydraulic pre-tensioning device |
| CN101823114A (en) * | 2010-04-09 | 2010-09-08 | 太原重工股份有限公司 | Double-post inclined type multi-pull-rod prestress machine frame of free forging hydrostatic press |
| CN202239427U (en) * | 2011-09-20 | 2012-05-30 | 天津市天锻压力机有限公司 | Large-tonnage hydraulic press multi-pull-rod pre-tightening device |
| CN203401755U (en) * | 2013-08-20 | 2014-01-22 | 沃得精机(中国)有限公司 | Hydraulic tensioning device of pull rods of press machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60145222A (en) * | 1983-12-29 | 1985-07-31 | Kurimoto Iron Works Ltd | Cylinder device for rising and falling frame |
-
2013
- 2013-08-20 CN CN201310363099.7A patent/CN103448288B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2732385Y (en) * | 2004-09-29 | 2005-10-12 | 天津市天锻压力机有限公司 | Combined machine body drag bar pre-fastening device |
| CN200992468Y (en) * | 2006-12-12 | 2007-12-19 | 合肥锻压机床有限公司 | Combined frame type body hydraulic pre-fastening device |
| CN201102227Y (en) * | 2007-08-23 | 2008-08-20 | 上海电机学院 | Integral hydraulic drawing device |
| CN201389771Y (en) * | 2009-04-24 | 2010-01-27 | 十堰海岚机床有限公司 | Hydraulic pre-tensioning device |
| CN101823114A (en) * | 2010-04-09 | 2010-09-08 | 太原重工股份有限公司 | Double-post inclined type multi-pull-rod prestress machine frame of free forging hydrostatic press |
| CN202239427U (en) * | 2011-09-20 | 2012-05-30 | 天津市天锻压力机有限公司 | Large-tonnage hydraulic press multi-pull-rod pre-tightening device |
| CN203401755U (en) * | 2013-08-20 | 2014-01-22 | 沃得精机(中国)有限公司 | Hydraulic tensioning device of pull rods of press machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103448288A (en) | 2013-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201796721U (en) | Pressing and mounting device for transformer coil | |
| CN203730510U (en) | Novel bolt | |
| CN103448288B (en) | Press machine draw bar fluid-pressure straining device | |
| CN203401755U (en) | Hydraulic tensioning device of pull rods of press machine | |
| JP2017070952A (en) | Molding machine | |
| CN201067889Y (en) | Hydraulic pretightening device | |
| CN107191462A (en) | A kind of bolt easy to use | |
| CN204209591U (en) | A kind of for circulatory spherical hydraulic power-assisted steering gear valve centering clamp | |
| CN205290468U (en) | Tight structure is pressed from both sides in decompression | |
| CN103482512B (en) | There is the towing winch of brake structure | |
| CN203266172U (en) | V-type iron auxiliary tightly-pressing device | |
| CN202639815U (en) | Hydraulic tightening and detaching tool for crosshead nut | |
| CN202640269U (en) | Dismantling device used for oil seal of steering cylinder of forklift | |
| CN102723823B (en) | Quick-change adjustable automatic tire-expanding device special for motor stator | |
| CN205069328U (en) | Transformer coil constant voltage closing device | |
| CN203288407U (en) | Electric reactor body pressing device | |
| CN203317331U (en) | Disassembling tool for check valves of homogenizers | |
| CN103286739B (en) | For cylindrical part elastic conjunction instrument | |
| CN203603668U (en) | Hydraulic type radar cabin opening device | |
| CN201516701U (en) | Clearance eliminating device between presser sliding block and piston | |
| CN111255768A (en) | Special clamping oil cylinder for quick die change of forging production line | |
| CN114388254B (en) | Step-by-step and step-by-step compaction method for iron core column of three-phase reactor | |
| CN204914683U (en) | High accuracy high velocity ram machine | |
| CN203146930U (en) | Anti-explosion overflow valve for pipeline | |
| CN213733526U (en) | Single-column type oil press |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20160820 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |