CN207103425U - Mandrel movement limiting dolly - Google Patents

Mandrel movement limiting dolly Download PDF

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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
Authority
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
Application number
CN201620982929.3U
Other languages
Chinese (zh)
Inventor
李红吉
吴江伟
郭军吉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Linzhou Fengbao Pipe Co Ltd
Original Assignee
Linzhou Fengbao Pipe Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Linzhou Fengbao Pipe Co Ltd filed Critical Linzhou Fengbao Pipe Co Ltd
Priority to CN201620982929.3U priority Critical patent/CN207103425U/en
Application granted granted Critical
Publication of CN207103425U publication Critical patent/CN207103425U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Mandrel movement limiting dolly
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)

  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.
CN201620982929.3U 2016-08-30 2016-08-30 Mandrel movement limiting dolly Expired - Fee Related CN207103425U (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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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