CN207103425U - Mandrel movement limiting dolly - Google Patents
Mandrel movement limiting dolly Download PDFInfo
- Publication number
- CN207103425U CN207103425U CN201620982929.3U CN201620982929U CN207103425U CN 207103425 U CN207103425 U CN 207103425U CN 201620982929 U CN201620982929 U CN 201620982929U CN 207103425 U CN207103425 U CN 207103425U
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- CN
- China
- Prior art keywords
- wheel
- restraint
- movement limiting
- rack
- track
- 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 kind of mandrel movement limiting dolly, including restraint rack, restraint rack both sides are arranged with multiple wheels, and wheel is located on restraint track, and wheel contacts with restraint track for face.Mandrel movement limiting dolly of the present utility model, wheel contact with restraint track for face, and wheel stress surface increase, stress significantly reduces the fault rate of wheel than more uniform；Restraint rack both sides are symmetrical arranged wheel, have also shared the impulsive force of half while sharing a part of gravity to existing wheel to symmetrical side wheel, extend the service life of bearing and wheel indirectly, greatly reduce manpower and maintenance replacement cost.
Description
Technical field
The utility model belongs to steel pipe's production technical field, relates in particular to a kind of mandrel movement limiting dolly.
Background technology
Hollow billet after perforation is enclosed on plug, is sequentially arranged by multi-frame and tandem rolling that adjacent rack roll gap is interlaced
Rolled on machine.Mandrel movement limiting rolling refers to that in the operation of rolling plug is limited dynamic action, all the time with the constant speed of a setting
Advance, this speed is less than or equal to the mill speed of first roll mill, is advantageous to the linear deformation of metal.Mandrel movement limiting fills
Put by the gear in alternating current generator, shaft coupling, reductor and safety coupling driving rack case, and restraint is driven by gear
Long rack.Mandrel movement limiting rack is to clamp the visual plant that plug directly participates in rolling deformation, and restraint rack both sides are provided with car
Wheel, so as to form limiting bogie, is walked by wheel on restraint track.
Bearing intensity in existing limiting bogie wheel is inadequate, and 20 breach are provided with restraint track to get out of the way hollow billet, core
The running orbit of offline revoliving arm on rod, greater impact load can be formed to wheel when limiting bogie passes through breach, cause bearing
Abrasion, cause the reduction of limiting bogie service life；Wheel on restraint rack is distributed in broken line, and stress point disperses, by breach
When great impact power can be caused to wheel；It is linear contact between limiting bogie wheel and restraint track, wheel surface stress collection
In, easily damage.
Utility model content
A kind of the shortcomings that the purpose of this utility model is to overcome in the prior art, there is provided mandrel movement limiting dolly.
To achieve the above object, the utility model uses following technical scheme：A kind of mandrel movement limiting dolly, including control tooth
Bar, restraint rack both sides are arranged with multiple wheels, and wheel is located on restraint track, and wheel contacts with restraint track for face.
A pair of taper roll bearings are provided with the wheel, taper roll bearing is back-to-back installation.
Mandrel movement limiting dolly of the present utility model, wheel contact with restraint track for face, the increase of wheel stress surface, stress ratio
It is more uniform, significantly reduce the fault rate of wheel；Restraint rack both sides are symmetrical arranged wheel, share one to existing wheel
Also the impulsive force of half has been shared while dividing gravity to symmetrical side wheel, has extended the service life of bearing and wheel indirectly,
Greatly reduce manpower and maintenance replacement cost.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is wheel and restraint track assembling schematic diagram.
Embodiment
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
Mandrel movement limiting dolly as depicted in figs. 1 and 2, including restraint rack 1, the both sides of restraint rack 1 are arranged with multiple
Wheel 2, is provided with a pair of taper roll bearings 3 in wheel 2, and taper roll bearing 3 is back-to-back installation, the 2 same time-division of both ends wheel
Carried on a shoulder pole a part of gravity and impulsive force, extended the service life of wheel 2 and bearing, wheel 2 is located on restraint track 4, wheel 2 with
Restraint track 4 is face contact, the increase of the stress surface of wheel 2, and stress significantly reduces the fault rate of wheel 2 than more uniform.
Claims (1)
- A kind of 1. mandrel movement limiting dolly, it is characterised in that：Including restraint rack, restraint rack both sides are arranged with multiple wheels, Wheel is located on restraint track, and wheel contacts with restraint track for face；A pair of taper roll bearings, taper roller are provided with wheel Bearing is back-to-back installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620982929.3U CN207103425U (en) | 2016-08-30 | 2016-08-30 | Mandrel movement limiting dolly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620982929.3U CN207103425U (en) | 2016-08-30 | 2016-08-30 | Mandrel movement limiting dolly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207103425U true CN207103425U (en) | 2018-03-16 |
Family
ID=61595662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620982929.3U Expired - Fee Related CN207103425U (en) | 2016-08-30 | 2016-08-30 | Mandrel movement limiting dolly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207103425U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112474827A (en) * | 2020-10-28 | 2021-03-12 | 太原重工股份有限公司 | Automatic control method for reducing fixed-point abrasion of retained mandrel |
-
2016
- 2016-08-30 CN CN201620982929.3U patent/CN207103425U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112474827A (en) * | 2020-10-28 | 2021-03-12 | 太原重工股份有限公司 | Automatic control method for reducing fixed-point abrasion of retained mandrel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180316 Termination date: 20200830 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |