CN2827568Y - Rod lifting device in limiting trolley - Google Patents
Rod lifting device in limiting trolley Download PDFInfo
- Publication number
- CN2827568Y CN2827568Y CN 200520085341 CN200520085341U CN2827568Y CN 2827568 Y CN2827568 Y CN 2827568Y CN 200520085341 CN200520085341 CN 200520085341 CN 200520085341 U CN200520085341 U CN 200520085341U CN 2827568 Y CN2827568 Y CN 2827568Y
- Authority
- CN
- China
- Prior art keywords
- push rod
- plug
- endoporus
- pin
- chute
- 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
Abstract
The utility model relates to the pre-rotation servicing unit of pipe mill off-line plunger technology retained mandrel, belongs to pin-lift arrangement technical field in the pipe mill off-line plunger technology.The built-in pin-lift arrangement of restraint dolly, be located in the endoporus of little axletree (8) front end, back push rod (2), dish spring (3), preceding push rod (4) that order flexibly connects are installed in endoporus, outer wall at back one section little axletree of endoporus is offered chute, bearing pin (9) with back push rod (2) interlock is installed in the chute, and this bearing pin (9) is moved back and forth in chute by the claw Driven by Hydraulic Cylinder.The utility model has increased auxiliary force and has produced on the plug of pre-rotation in desire, overcome the problem that prior art restraint dolly clamping force deficiency, plug can't produce pre-rotation, can eliminate the gap of claw and each faying face of plug afterbody, increase thrust between the two, produce plug and rotate needed enough frictional force.
Description
One, technical field
The utility model relates to the pre-rotation servicing unit of pipe mill off-line plunger technology plug, be a kind of solution specifically when rolling plug weight is big, plug can produce the pin-lift arrangement of pre-rotation, belongs to pin-lift arrangement technical field in the pipe mill off-line plunger technology.
Two, background technology
The Arcc-Roll pipe mill is a main equipment of producing hot rolled seamless steel tube, adopts the plug restraint device to realize that the restraint of steel pipe is rolling.The restraint dolly is used to block the plug afterbody, makes plug produce pre-rotation, and drives the plug that inserts hollow billet and send into pipe mill forward to carry out restraint rolling, rollingly plug is return at a high speed after intact.When producing large-diameter steel pipe, because plug weight is bigger, the frictional force when the claw clamping force is not enough to overcome the plug rotation, plug can not produce pre-rotation, causes hollow billet to send into the difficulty of nipping when pipe mill is rolled, and influences normally rolling.
Three, summary of the invention
The purpose of this utility model is intended to overcome the deficiency of above-mentioned prior art, the existing restraint dolly clamping force deficiency of solution, plug can't produce the problem of pre-rotation, a kind of gap that can eliminate claw and each faying face of plug afterbody is provided, increase thrust between the two, produce plug and rotate the built-in pin-lift arrangement of restraint dolly of needed enough frictional force.
In order to reach this purpose, the utility model is achieved in that
One cover pin-lift arrangement is set in dolly axle front end endoporus, and in the time of the claw chucking plug afterbody conical surface, push rod advances and withstands the plug tail end face, thereby increases the thrust between claw and the plug afterbody.When motor rotated, because enough frictional force is arranged, the power of motor passes to plug by claw made it produce pre-rotation.
The built-in pin-lift arrangement of restraint dolly, be located in the endoporus of dolly axle 8 front ends, back push rod 2, dish spring 3, preceding push rod 4 that order flexibly connects are installed in endoporus, outer wall at back one section little axletree of endoporus is offered chute, bearing pin 9 with back push rod 2 interlocks is installed in the chute, and this bearing pin 9 is moved back and forth in chute by the claw Driven by Hydraulic Cylinder;
For back push rod 2, dish spring 3, preceding push rod 4 that said sequence flexibly connects, the front end of preceding push rod 4 withstands on the plug tail end face, is provided with dish spring 3 between preceding push rod 4 and the back push rod, and back push rod 2 front ends insert and are connected in the preceding push rod 4.
The built-in pin-lift arrangement of restraint dolly of the present utility model has increased auxiliary force in the plug afterbody, overcome the problem that prior art restraint dolly clamping force deficiency, plug can't produce pre-rotation, can eliminate the gap of claw and each faying face of plug afterbody, increase thrust between the two, produce plug and rotate needed enough frictional force.
Four, description of drawings
Fig. 1 is that the withdrawal of the utility model most preferred embodiment claw hydraulic cylinder, claw are in the open configuration schematic diagram;
Fig. 2 is that the utility model most preferred embodiment claw hydraulic cylinder stretches out, claw is stuck in view on the plug afterbody conical surface;
Fig. 3 is the A-A cutaway view of Fig. 2.
Five, the specific embodiment
In order to understand better and to implement, provide most preferred embodiment of the present utility model below in conjunction with accompanying drawing, be used for formation of the present utility model is further specified.
Among Fig. 1, the claw hydraulic cylinder is in retracted position, is in open configuration at this position claw, and preceding push rod 4 is return in the dolly axle endoporus;
Among Fig. 2, the claw hydraulic cylinder is in extended position, be stuck on the plug afterbody conical surface at this position claw, push rod 4 withstands the plug tail end face simultaneously, this moment, the dish spring was in compressive state, under the effect of disc spring force, eliminated the gap between claw and the plug afterbody, increase thrust between the two, produce plug and rotate needed enough frictional force;
Among Fig. 3, bearing pin passes the chute on back push rod 2 and the little axletree, drives bearing pin and drives back push rod action by the claw hydraulic cylinder power.
The built-in pin-lift arrangement of restraint dolly of present embodiment, be located in the endoporus of dolly axle 8 front ends, back push rod 2, dish spring 3, preceding push rod 4 that order flexibly connects are installed in endoporus, the front end of preceding push rod 4 withstands on the plug tail end face, be provided with dish spring 3 between preceding push rod 4 and the back push rod, back push rod 2 front ends insert and are connected in the preceding push rod 4, outer wall at back one section little axletree of endoporus is offered chute, bearing pin 9 with back push rod 2 interlocks is installed in the chute, and this bearing pin 9 is moved back and forth in chute by the claw Driven by Hydraulic Cylinder.
The course of work is:
When the hydraulic cylinder 1 that drives claw moved, claw 5 rotated to the direction of chucking plug 6 afterbodys under the drive of linkage; Meanwhile, by bearing pin 9, hydraulic cylinder power is passed to back push rod 2 simultaneously, push rod 4 advanced before back push rod 2 promoted; When claw 5 blocks the plug 6 afterbody conical surfaces, the tailstock 7 that preceding push rod 4 passes dolly axle front end withstands the plug tail end, dish spring 3 before this moment between push rod 4 and the back push rod 2 is in compressive state, under the effect of disc spring force, eliminate the gap of claw 5 and each faying face of plug afterbody, increase thrust between the two, produce plug and rotate needed enough frictional force.
The built-in pin-lift arrangement of restraint dolly of present embodiment has increased auxiliary force in the plug afterbody, solved the problem that prior art restraint dolly clamping force deficiency, plug can't produce pre-rotation, can eliminate the gap of claw and each faying face of plug afterbody, increase thrust between the two, produce plug and rotate needed enough frictional force.
Claims (2)
1, the built-in pin-lift arrangement of restraint dolly, it is characterized in that being located in the endoporus of little axletree (8) front end, back push rod (2), dish spring (3), preceding push rod (4) that order flexibly connects are installed in endoporus, outer wall at back one section little axletree of endoporus is offered chute, bearing pin (9) with back push rod interlock is installed in the chute, and this bearing pin is moved back and forth in chute by the claw Driven by Hydraulic Cylinder.
2, according to the built-in pin-lift arrangement of the described restraint dolly of claim 1, it is characterized in that the front end of preceding push rod (4) withstands on the plug tail end face, be provided with dish spring (3) between preceding push rod and the back push rod (2), back push rod front end inserts and is connected in the preceding push rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520085341 CN2827568Y (en) | 2005-07-16 | 2005-07-16 | Rod lifting device in limiting trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520085341 CN2827568Y (en) | 2005-07-16 | 2005-07-16 | Rod lifting device in limiting trolley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2827568Y true CN2827568Y (en) | 2006-10-18 |
Family
ID=37079122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520085341 Expired - Fee Related CN2827568Y (en) | 2005-07-16 | 2005-07-16 | Rod lifting device in limiting trolley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2827568Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101428296B (en) * | 2008-12-08 | 2010-06-09 | 中信重工机械股份有限公司 | Pre-rotation apparatus for large-scale punching machine post rod |
| CN102240678A (en) * | 2011-06-27 | 2011-11-16 | 无锡西姆莱斯石油专用管制造有限公司 | Fast positioning device of core rod |
| CN109128127A (en) * | 2018-09-04 | 2019-01-04 | 湖南镭目科技有限公司 | Steel ladle slide board equipment and its grasping mechanism |
-
2005
- 2005-07-16 CN CN 200520085341 patent/CN2827568Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101428296B (en) * | 2008-12-08 | 2010-06-09 | 中信重工机械股份有限公司 | Pre-rotation apparatus for large-scale punching machine post rod |
| CN102240678A (en) * | 2011-06-27 | 2011-11-16 | 无锡西姆莱斯石油专用管制造有限公司 | Fast positioning device of core rod |
| CN109128127A (en) * | 2018-09-04 | 2019-01-04 | 湖南镭目科技有限公司 | Steel ladle slide board equipment and its grasping mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061018 Termination date: 20120716 |