CN203887308U - Pull rod used for roll cutting type double-sided shear tool retracting system - Google Patents
Pull rod used for roll cutting type double-sided shear tool retracting system Download PDFInfo
- Publication number
- CN203887308U CN203887308U CN201420334466.0U CN201420334466U CN203887308U CN 203887308 U CN203887308 U CN 203887308U CN 201420334466 U CN201420334466 U CN 201420334466U CN 203887308 U CN203887308 U CN 203887308U
- Authority
- CN
- China
- Prior art keywords
- pull rod
- drag link
- link body
- drawhead
- main body
- 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
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Abstract
The utility model discloses a pull rod used for a roll cutting type double-sided shear tool retracting system and belongs to pull rods. The pull rod structurally comprises a pull rod body, the pull rod body comprises a pull rod head and a pull rod main body, the pull rod head and the pull rod main body are connected through threads and are fixed through a stabilizing nail, the lower portion of the pull rod head is provided with a cylindrical cavity, an inner thread is arranged at the position, on the inner side of the pull rod head, of the cavity, the upper portion of the pull rod main body is provided with an outer thread matched with the inner thread of the pull rod head, the upper portion of the pull rod main body extends into the cavity of the pull rod head and is connected with the cavity of the pull rod head through cooperation of the outer thread and the inner thread, an oil blocking cover is arranged between the pull rod head and the pull rod main body, the pull rod main body is sleeved with the oil blocking cover, the pull rod main body with the outer thread is sleeved with the top of the oil blocking cover, and the pull rod head and the pull rod main body are fixed through the stabilizing nail. The pull rod used for the roll cutting type double-sided shear tool retracting system has the advantages that the service life of the pull rod is prolonged, the pull rod can be replaced rapidly and major equipment hidden dangers are eliminated.
Description
Technical field
The utility model relates to a kind of pull bar, especially a kind of pull bar for rolling-cut double side shear withdrawing system.
Background technology
Rolling-cut double side shear can carry out accurate fixed width shearing to steel plate, has the advantages such as lumber recovery is high, cross section quality good, shear rate is fast, is one of Heavy Plate Rolling Line nucleus equipment.But because bilateral scissors withdrawing system failure is frequent, fault handling time is long, causes operating rate low, affects normal organization of production.When bilateral scissors shearing steel plate, once, tool retracting device drives upper shearing machine to step back once in every shearing, and while preventing that shearing machine from lifting, upper scissor blade takes up steel plate to affect shearing quality.Be generally 20-30 beat/min according to sheet metal thickness, the different shear rates of material, tool retracting device action is very frequent, easily produces fatigue damage.Bilateral scissors withdrawing system is made up of Eccentric earn mechamism in deceleration box and the outer retracting mechanism of deceleration box.Eccentric earn mechamism drives retracting mechanism to realize the front and back action of upper shearing machine by pull bar.Because pull bar connects decelerating chassis inside and outside two parts, based on preventing leakage of oil consideration, pull bar generally adopts welded formula structure.When shearing steel plate, withdrawing system retracting mechanism pull bar is subject to the drawing of alternation, compression that fatigue fracture very easily occurs at weld bond place, and General Life is only 6 months.After pull bar fracture, owing to changing narrow space, after whole reductor need being disintegrated, can change at least 5 days used times.When normal production, fracture occurring is exactly substantial equipment accident, and in how extending pull rod service life, how quick-replaceable pull bar is the normal difficult problems of producing of puzzlement bilateral scissors.
At present, the solution also not had.
Utility model content
Technical assignment of the present utility model is to provide a kind of pull bar for rolling-cut double side shear withdrawing system for above-mentioned deficiency of the prior art, this a kind of pull bar for rolling-cut double side shear withdrawing system has the bilateral scissors withdrawing of prolongation system pull bar service life, realize fast replacing pull rod, reach the feature of the object of eliminating substantial equipment hidden danger.
The utility model solves the technical scheme that its technical problem adopts: it comprises bar body, described bar body comprises drawhead and drag link body, described drawhead and drag link body are threaded connection and are fixing surely to follow closely, the bottom of described drawhead is provided with a circular cylindrical cavity, the drawhead inner side at described cavity place is provided with internal thread, the top of described drag link body is provided with the external screw thread matching with drawhead internal thread, the top of described drag link body stretches in the cavity of drawhead, and be connected with screw-internal thread fit by external screw thread, the described excircle dimension with externally threaded drag link body top is less than the excircle dimension that there is no externally threaded drag link body bottom, between described drawhead and drag link body, be provided with oil blocking cover, described oil blocking cover is placed on drag link body, oil blocking cover top is placed on on externally threaded drag link body, fixing by steady nail between described drawhead and drag link body.
Described drawhead and drag link body adopt respectively 42CrMo forging to make.
Described steady nail adopts M8x35 surely to follow closely.
A kind of pull bar for rolling-cut double side shear withdrawing system of the present utility model compared to the prior art, there is following outstanding beneficial effect: pull bar adopts split-type structural, drawhead is threaded by M72 with drag link body, and by oil blocking cover by screw clamp between drawhead and drag link body; For preventing drawhead and drag link body thread looseness, fixing with the steady nail of M8.Drawhead and drag link body all adopt 42CrMo forging, to improve pull bar intensity, increase the service life; Can solve the insufficient space problem of changing, save the features such as replacing time.
Brief description of the drawings
Accompanying drawing 1 is a kind of main TV structure schematic diagram of the pull bar for rolling-cut double side shear withdrawing system;
Description of reference numerals: 1, drawhead, 2, cavity, 3, steady nail, 4, oil blocking cover, 5, drag link body.
Detailed description of the invention
With reference to Figure of description 1, a kind of pull bar for rolling-cut double side shear withdrawing system of the present utility model is described in detail below.
A kind of pull bar for rolling-cut double side shear withdrawing system of the present utility model, its structure comprises bar body, described bar body comprises drawhead 1 and drag link body 5, described drawhead 1 and drag link body 5 are threaded connection and are fixing surely to follow closely 3, the bottom of described drawhead 1 is provided with a circular cylindrical cavity 2, drawhead 1 inner side at described cavity 2 places is provided with internal thread, the top of described drag link body 5 is provided with the external screw thread matching with drawhead 1 internal thread, the top of described drag link body 5 stretches in the cavity 2 of drawhead 1, and be connected with screw-internal thread fit by external screw thread, the described excircle dimension with externally threaded drag link body top is less than the excircle dimension that there is no externally threaded drag link body bottom, between described drawhead 1 and drag link body 5, be provided with oil blocking cover 4, described oil blocking cover 4 is placed on drag link body 5, oil blocking cover 4 tops are placed on on externally threaded drag link body 5, fixing by steady nail 3 between described drawhead 1 and drag link body 5.
Described drawhead 1 and drag link body 5 adopt respectively 42CrMo forging to make, and forge after-baking hardness HB286～326, have improved intensity and the toughness of drawhead 1 and drag link body 5, increase the service life, and the life-span can be brought up to 2 years.
Described steady nail 3 adopts M8x35 surely to follow closely.
Oil blocking cover 4 is clipped between drawhead 1 and drag link body 5, has avoided lubricating oil in reductor to flow out along bar body.
Pull bar adopts split-type structural, has solved narrow space, cannot change from reductor bottom the difficult problem of pull bar.While changing pull bar, first reductor bottom outage is opened, drawhead 1 and tool retracting device cam mechanism lever are connected, then drag link body 5 be screwed in drawhead 1 and use steady nail 3 fixing, avoided reductor to disintegrate, the replacing pull bar time only needs 6 hours.
Except the technical characterictic described in description, be the known technology of those skilled in the art.
Claims (3)
1. the pull bar for rolling-cut double side shear withdrawing system, comprise bar body, it is characterized in that: described bar body comprises drawhead and drag link body, described drawhead and drag link body are threaded connection and are fixing surely to follow closely, the bottom of described drawhead is provided with a circular cylindrical cavity, the drawhead inner side at described cavity place is provided with internal thread, the top of described drag link body is provided with the external screw thread matching with drawhead internal thread, the top of described drag link body stretches in the cavity of drawhead, and be connected with screw-internal thread fit by external screw thread, the described excircle dimension with externally threaded drag link body top is less than the excircle dimension that there is no externally threaded drag link body bottom, between described drawhead and drag link body, be provided with oil blocking cover, described oil blocking cover is placed on drag link body, oil blocking cover top is placed on on externally threaded drag link body, fixing by steady nail between described drawhead and drag link body.
2. a kind of pull bar for rolling-cut double side shear withdrawing system according to claim 1, is characterized in that: described drawhead and drag link body adopt respectively 42CrMo forging to make.
3. a kind of pull bar for rolling-cut double side shear withdrawing system according to claim 1, is characterized in that: described steady nail adopts M8x35 surely to follow closely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420334466.0U CN203887308U (en) | 2014-06-20 | 2014-06-20 | Pull rod used for roll cutting type double-sided shear tool retracting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420334466.0U CN203887308U (en) | 2014-06-20 | 2014-06-20 | Pull rod used for roll cutting type double-sided shear tool retracting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203887308U true CN203887308U (en) | 2014-10-22 |
Family
ID=51713756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420334466.0U Expired - Fee Related CN203887308U (en) | 2014-06-20 | 2014-06-20 | Pull rod used for roll cutting type double-sided shear tool retracting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203887308U (en) |
-
2014
- 2014-06-20 CN CN201420334466.0U patent/CN203887308U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 Termination date: 20170620 |