CN104609227A - Machine-assisted belt winding device - Google Patents

Machine-assisted belt winding device Download PDF

Info

Publication number
CN104609227A
CN104609227A CN201410755150.3A CN201410755150A CN104609227A CN 104609227 A CN104609227 A CN 104609227A CN 201410755150 A CN201410755150 A CN 201410755150A CN 104609227 A CN104609227 A CN 104609227A
Authority
CN
China
Prior art keywords
roller
support
belt
bearing
center shaft
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.)
Pending
Application number
CN201410755150.3A
Other languages
Chinese (zh)
Inventor
李学军
何险峰
李勇智
廖家宁
乐永钦
陆长善
龙劲声
欧发权
黎发兴
张叶
黄英社
李祥胜
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.)
GUANGXI HUAYIN ALUMINIUM CO Ltd
Original Assignee
GUANGXI HUAYIN ALUMINIUM 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 GUANGXI HUAYIN ALUMINIUM CO Ltd filed Critical GUANGXI HUAYIN ALUMINIUM CO Ltd
Priority to CN201410755150.3A priority Critical patent/CN104609227A/en
Publication of CN104609227A publication Critical patent/CN104609227A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00Winding webs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H79/00Driving-gear for devices for forwarding, winding, unwinding, or depositing material, not otherwise provided for
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00Power transmission; Driving means
    • B65H2403/90Machine drive

Abstract

The invention discloses a machine-assisted belt winding device. The machine-assisted belt winding device comprises roller supports, roller bearing blocks, a telescopic roller, a power device and a guide carrier roller device. The roller bearing blocks, the power device and the guide carrier roller device are installed on the roller supports, and the power device is connected with the roller bearing blocks and the telescopic roller in sequence. According to the machine-assisted belt winding device, winding operation of a belt is conducted by means of a motor providing power, the diameter of the telescopic roller can be adjusted to be increased before winding operation of the belt, after winding operation of the belt is completed, the diameter of the roller is adjusted to be decreased, a belt reel on the roller can be easily discharged, design is ingenious, and operation is simple and convenient. The machine-assisted belt winding device is easy to use, convenient to move, easy and convenient to operate, capable of greatly relieving labor intensity, high in working efficiency and remarkable in economical benefit.

Description

A kind of mechanically aided belt wrap-up
Technical field
The present invention relates to belt winding device, be specifically related to a kind of mechanically aided belt wrap-up.
Background technology
The common a kind of mass transport mode of smelting system industry is Belt Conveying, and ore, coal, aluminium oxide etc. arrive through Belt Conveying and produce or storage location, meet mass transport needs.
The belt multi-size that smelting enterprise uses, from 0.5 meter to 1.4 meters not etc., each production department are widely used belt width, carry out in year changing and to reclaim quantity large.The belt that current replacing is reclaimed adopts the mode of artificial rolling, and wrapup procedure labour intensity is large, and user of service is many, inefficiency.And during the old belt of artificial rolling, because belt is heavy and long, manually cannot complete the disposable rolling of whole piece belt, normal need carry out rolling after cutting process, and after old belt cutting shortens, secondary value is low, cannot carry out the use that downgrades, nothing is repaired the old and utilized scraps, cost efficiency is worth, the wasting of resources.
Summary of the invention
The object of this invention is to provide a kind of novel mechanical power-assisted belt wrap-up, carry out the rolling work of old belt efficiently, reach the object reducing labour intensity, economic benefit of increasing work efficiency, increase.
For achieving the above object, mechanically aided belt wrap-up of the present invention, comprise roller support, roller bearing seats, telescopic roller, engine installation and guiding support roller device, described roller bearing seats, engine installation and guiding support roller device are arranged on roller support, and engine installation is connected with roller bearing seats, telescopic roller successively;
Telescopic roller comprises: the support of roller center shaft, roller, guiding steel plate, carrying riser, orienting lug and binding bolt, the two ends roller that welding four pieces is fan-shaped symmetrically and evenly respectively of described roller center shaft supports, described roller leaves targeting port between supporting, roller supports circumference soldering guiding steel plate, carrying riser along targeting port movement is installed in targeting port, carrying riser two ends are welded with orienting lug, and orienting lug is by binding bolt and roller support and connection.
Roller support comprises: support, support base plate and rack plate, the bottom symmetrical of two splayed configuration supports is welded on support base plate, top and the rack plate of support are welded to connect, frame stiffens beam is welded with inside splayed configuration support, be welded with between support and support base plate and strengthen gusset A, be welded with between support and rack plate and strengthen gusset B.
Described roller bearing seats comprises: bearing seat center shaft, deep groove ball bearing, bearing carrier ring, bearing seat gland, pedestal base and bearing seat gusset, described bearing seat center shaft installs two deep groove ball bearings, also have bearing spacer spaced apart between deep groove ball bearing, bearing seat center shaft afterbody is also provided with bearing lock nut, described bearing seat center shaft is arranged in bearing carrier ring, bearing seat gland is fixedly connected with bearing carrier ring, described bearing carrier ring is connected with pedestal base by bearing seat gusset, and pedestal base is connected with rack plate;
Described roller support installing has two roller bearing seats, and described roller center shaft two ends are connected respectively with the bearing seat center shaft of two roller bearing seats.
Described engine installation comprises power end support, motor bracket, electrical motor, reductor, belt pulley A and belt pulley B, four power end support weldings are in support base plate, reductor is fixedly connected on the top of power end support by reductor base plate, the output shaft of reductor is connected with bearing seat center shaft by sliding cross coupling, and the input shaft of reductor is provided with belt pulley A;
Described motor bracket is connected with power end support, and electrical motor is installed on motor bracket, and the output shaft of electrical motor is provided with belt pulley B, and belt pulley A is connected by classical V-belt with belt pulley B.
Described guiding support roller device is arranged on support base plate, is positioned on front side of roller support, and described guiding support roller device divides upper-lower position to be provided with the adjustable guiding carrying roller in two distance intervals.
Described roller center shaft and the connection mode of bearing seat center shaft are that internal-external hexagon formula is connected.
Described motor bracket comprises motor bracket base plate, electrical motor adapter plate and adjusting bolt, motor bracket base plate is weldingly fixed on power end support, electrical motor adapter plate is connected with motor bracket base plate by adjusting bolt, and electrical motor is arranged on electrical motor adapter plate.
Support base plate is also provided with transport suspension centre.
Substantive distinguishing features of the present invention and progress are:
The mechanically aided belt wrap-up of the application, utilizes electrical motor to carry out the rolling operation of belt as power.Telescopic roller adjustable increase roller diameter before belt rolling operation of this device, after treating belt rolling operation, regulates and reduces roller diameter, and the belt on roller is rolled up can easily be unloaded, and designs ingenious, easy and simple to handle.Due to disposablely rolling can be carried out to old belt, without the need to cutting process, so can carry out fully effectively utilizing to old belt, improve value, increase economic benefit.Simple, conveniently moving, easy and simple to handle implemented by this mechanically aided belt wrap-up, significantly can reduce that labour intensity, work efficiency are high, remarkable in economical benefits.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of this mechanically aided belt wrap-up.
Fig. 2 is the main TV structure schematic diagram of telescopic roller.
Fig. 3 is the left TV structure schematic diagram of telescopic roller before not installing carrying riser.
Fig. 4 is the left TV structure schematic diagram of telescopic roller after installing carrying riser.
Fig. 5 is the left TV structure schematic diagram of roller support.
Fig. 6 is the main TV structure schematic diagram of roller bearing seats.
Fig. 7 is the main TV structure schematic diagram of motor bracket.
Fig. 8 is the main TV structure schematic diagram of guiding support roller device.
Component serial number and title in figure:
Support base plate-1, power end support-2, motor bracket-3, electrical motor-4, belt pulley B-5, classical V-belt-6, reductor base plate-7, belt pulley A-8, reductor-9, sliding cross coupling-10, roller bearing seats-11, telescopic roller-12, roller support-13, guiding support roller device-14, transport suspension centre-15, roller center shaft-16, binding bolt-17, roller supports-18, orienting lug-19, carrying riser-20, guiding steel plate-21, targeting port-22, strengthen gusset A-23, support-24, frame stiffens beam-25, strengthen gusset B-26, rack plate-27, pedestal base-28, bearing seat gland-29, bearing seat center shaft-30, bearing lock nut-31, bearing carrier ring-32, bearing spacer-33, deep groove ball bearing-34, bearing seat gusset-35, motor bracket base plate-36, electrical motor adapter plate-37, adjusting bolt-38, guiding carrying roller-39.
Detailed description of the invention
Below in conjunction with accompanying drawing, enforcement structure of the present invention is described.
Shown in Fig. 1-8, mechanically aided belt wrap-up of the present invention, comprises roller support 13, roller bearing seats 11, telescopic roller 12, engine installation and guiding support roller device 14.
Telescopic roller 12 comprises following structure: the two ends roller that welding four pieces is fan-shaped symmetrically and evenly respectively of roller center shaft 16 supports 18, roller leaves targeting port 22 between supporting 18, roller supports 18 circumference soldering guiding steel plates 21, carrying riser 20 along targeting port 22 movement is installed in targeting port 22, carrying riser 20 two ends are welded with orienting lug 19, and orienting lug 19 supports 18 by binding bolt 17 with roller and is connected.
Roller support 13 comprises following structure: the bottom symmetrical of two splayed configuration supports 24 is welded on support base plate 1, top and the rack plate 27 of support 24 are welded to connect, frame stiffens beam 25 is welded with inside splayed configuration support 24, be welded with between support 24 and support base plate 1 and strengthen gusset A23, be welded with between support 24 and rack plate 27 and strengthen gusset B26.Support base plate 1 is also provided with transport suspension centre 15.
Roller bearing seats 11 comprises following structure: bearing seat center shaft 30 installs two deep groove ball bearings 34, also have bearing spacer 33 spaced apart between deep groove ball bearing 34, bearing seat center shaft 30 afterbody is also provided with bearing lock nut 31, bearing seat center shaft 30 is arranged in bearing carrier ring 32, bearing seat gland 29 is fixedly connected with bearing carrier ring 32, bearing carrier ring 32 is connected with pedestal base 28 by bearing seat gusset 35, and pedestal base 28 is connected with rack plate 27.
Roller support 13 is provided with two roller bearing seats 11, and roller center shaft 16 two ends are connected respectively with the bearing seat center shaft 30 of two roller bearing seats 11, and roller center shaft 16 and the connection mode of bearing seat center shaft 30 are that internal-external hexagon formula is connected.
Engine installation comprises following structure: four power end supports 2 are welded in support base plate 1, reductor 9 is fixedly connected on the top of power end support 2 by reductor base plate 7, the output shaft of reductor 9 is connected with bearing seat center shaft 30 by sliding cross coupling 10, and the input shaft of reductor 9 is provided with belt pulley A8;
Motor bracket base plate 36 is weldingly fixed on power end support 2, and electrical motor adapter plate 37 is connected with motor bracket base plate 36 by adjusting bolt 38, and electrical motor 4 is arranged on electrical motor adapter plate 37.The output shaft of electrical motor 4 is provided with belt pulley B5, and belt pulley A8 is connected by classical V-belt 6 with belt pulley B5.
Guiding support roller device 14 is arranged on support base plate 1, is positioned on front side of roller support 13, and guiding support roller device 14 points of upper-lower positions are provided with the adjustable guiding carrying roller 39 in two distance intervals, use as belt guiding.
The principle of work of this mechanically aided belt wrap-up is described below in conjunction with accompanying drawing and working process:
Utilize transport suspension centre 15, quickly and easily this device is circulated to operating area.Before rolling operation, mobile guide block 19 drives carrying riser 20 to move laterally at targeting port 22, after moving to maximum position, tighten binding bolt 17 orienting lug 19 and roller are supported 18 to be connected and fixed, now the radius of telescopic roller 12 is maximum, is installed by roller center shaft 16 be connected with bearing seat center shaft 30.
Adjust the spacing distance of two guiding carrying rollers 39 according to the thickness of rolling belt, belt is passed from two guiding carrying rollers 39, causes telescopic roller 12.Actuating motor 4, electrical motor 4 passes through belt pulley A8, belt pulley B5 and classical V-belt 6 transmission of power to reductor 9, and reductor 9 passes through sliding cross coupling 10 by transmission of power to bearing seat center shaft 30, and bearing seat center shaft 30 starts to rotate.Because roller center shaft 16 is connected with bearing seat center shaft 30, drive telescopic roller 12 to rotate thus, start rolling operation.Roller center shaft 16 and the connection mode of bearing center axle 30 are that internal-external hexagon formula is connected, and moment transmission efficiency is high.
In rolling operation process, the radius of a circle of four pieces of carrying risers 20 formation is than the large of steel plate 21 of leading, and belt wrap is on carrying riser 20.Because belt material is softer, easily subside inwards, guiding steel plate 21 plays when ensureing belt rolling and still keeps cylinder type.
After rolling operation, close electrical motor 4, roller center shaft 16 is separated with bearing seat center shaft 30, unloads telescopic roller 12, unclamp binding bolt 17, orienting lug 19 mobile drive is to the inside carried riser 20 move to the inside, the radius of a circle that four pieces of loading plates 20 are formed is less than guiding steel plate 21, and now carrying riser 20 is rolled up with belt and is separated, and carrying riser 20 is rolled up with belt exists gap, easily telescopic roller 12 is extracted from belt volume.
Telescopic roller 12 is reinstalled to roller bearing seats 11, new rolling operation can be started.
Before not using this device, artificial rolling, 10 people one day can the old belt of rolling about 200 meters, and after using this device, 5 people one day can the old belt of rolling more than 1000 meters, drastically increases work efficiency and reduces labor intensity again.

Claims (8)

1. a mechanically aided belt wrap-up, it is characterized in that: comprise roller support (13), roller bearing seats (11), telescopic roller (12), engine installation and guiding support roller device (14), described roller bearing seats (11), engine installation and guiding support roller device (14) are arranged on roller support (13), and engine installation is connected with roller bearing seats (11), telescopic roller (12) successively;
Telescopic roller comprises: roller center shaft (16), roller supports (18), guiding steel plate (21), carrying riser (20), orienting lug (19) and binding bolt (17), the two ends roller that welding four pieces is fan-shaped symmetrically and evenly respectively of described roller center shaft (16) supports (18), described roller supports between (18) and leaves targeting port (22), roller supports (18) circumference soldering guiding steel plate (21), carrying riser (20) along targeting port (22) movement is installed in targeting port (22), carrying riser (20) two ends are welded with orienting lug (19), orienting lug (19) supports (18) by binding bolt (17) with roller and is connected.
2. mechanically aided belt wrap-up according to claim 1, it is characterized in that: roller support (13) comprising: support (24), support base plate (1) and rack plate (27), the bottom symmetrical of two splayed configuration supports (24) is welded on support base plate (1), top and the rack plate (27) of support (24) are welded to connect, splayed configuration support (24) inner side is welded with frame stiffens beam (25), be welded with between support (24) and support base plate (1) and strengthen gusset A(23), be welded with between support (24) and rack plate (27) and strengthen gusset B(26).
3. mechanically aided belt wrap-up according to claim 1, it is characterized in that: described roller bearing seats (11) comprising: bearing seat center shaft (30), deep groove ball bearing (34), bearing carrier ring (32), bearing seat gland (29), pedestal base (28) and bearing seat gusset (35), described bearing seat center shaft (30) installs two deep groove ball bearings (34), also have bearing spacer (33) spaced apart between deep groove ball bearing (34), bearing seat center shaft (30) afterbody is also provided with bearing lock nut (31), described bearing seat center shaft (30) is arranged in bearing carrier ring (32), bearing seat gland (29) is fixedly connected with bearing carrier ring (32), described bearing carrier ring (32) is connected with pedestal base (28) by bearing seat gusset (35), pedestal base (28) is connected with rack plate (27),
Described roller support (13) is provided with two roller bearing seats (11), and described roller center shaft (16) two ends are connected respectively with the bearing seat center shaft (30) of two roller bearing seats (11).
4. mechanically aided belt wrap-up according to claim 1, it is characterized in that: described engine installation comprises power end support (2), motor bracket (3), electrical motor (4), reductor (9), belt pulley A(8) and belt pulley B(5), four power end supports (2) are welded in support base plate (1), reductor (9) is fixedly connected on the top of power end support (2) by reductor base plate (7), the output shaft of reductor (9) is connected with bearing seat center shaft (30) by sliding cross coupling (10), the input shaft of reductor (9) is provided with belt pulley A(8),
Described motor bracket (3) is connected with power end support (2), electrical motor (4) is installed on motor bracket (3), the output shaft of electrical motor (4) is provided with belt pulley B(5), belt pulley A(8) with belt pulley B(5) be connected by classical V-belt (6).
5. mechanically aided belt wrap-up according to claim 1, it is characterized in that: described guiding support roller device (14) is arranged on support base plate (1), be positioned at roller support (13) front side, described guiding support roller device (14) point upper-lower position is provided with the adjustable guiding carrying roller (39) in two distance intervals.
6. mechanically aided belt wrap-up according to claim 3, is characterized in that: described roller center shaft (16) and the connection mode of bearing seat center shaft (30) are that internal-external hexagon formula is connected.
7. mechanically aided belt wrap-up according to claim 4, it is characterized in that: described motor bracket (3) comprises motor bracket base plate (36), electrical motor adapter plate (37) and adjusting bolt (38), motor bracket base plate (36) is weldingly fixed on power end support (2), electrical motor adapter plate (37) is connected with motor bracket base plate (36) by adjusting bolt (38), and electrical motor (4) is arranged on electrical motor adapter plate (37).
8. mechanically aided belt wrap-up according to claim 5, is characterized in that: support base plate (1) is also provided with transport suspension centre (15).
CN201410755150.3A 2014-12-11 2014-12-11 Machine-assisted belt winding device Pending CN104609227A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410755150.3A CN104609227A (en) 2014-12-11 2014-12-11 Machine-assisted belt winding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410755150.3A CN104609227A (en) 2014-12-11 2014-12-11 Machine-assisted belt winding device

Publications (1)

Publication Number Publication Date
CN104609227A true CN104609227A (en) 2015-05-13

Family

ID=53143932

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410755150.3A Pending CN104609227A (en) 2014-12-11 2014-12-11 Machine-assisted belt winding device

Country Status (1)

Country Link
CN (1) CN104609227A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107934453A (en) * 2017-12-16 2018-04-20 苏州市吴江区英飞大自动化设备有限公司 Pusher module
CN109335765A (en) * 2018-09-11 2019-02-15 中冶宝钢技术服务有限公司 Device and its application method for belt replacing

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707599A (en) * 1952-01-12 1955-05-03 Benjamin H Snyder Adjustable wire and cable reel
US2877962A (en) * 1957-02-18 1959-03-17 Todd C Self-centering coiled stock reel
US5025999A (en) * 1990-02-22 1991-06-25 Littrell Chester G Coil winding form apparatus
CN1081422A (en) * 1992-07-22 1994-02-02 西北煤矿机械总厂二厂 Reel axle for removable conveyer belt
CN201525657U (en) * 2009-10-21 2010-07-14 太原钢铁(集团)有限公司 Leather belt recovery device
CN201553498U (en) * 2009-10-29 2010-08-18 天津钢铁集团有限公司 Chain transmission conveyor belt batching machine
CN201618734U (en) * 2010-03-18 2010-11-03 无锡平盛科技有限公司 Unloading belt pulley of drawing-wire machine
CN102815565A (en) * 2012-08-24 2012-12-12 安徽理工大学 Combined multifunctional tape winding and unwinding device
CN103434870A (en) * 2013-09-10 2013-12-11 乔磊 Mining tape winder
CN103612954A (en) * 2013-12-02 2014-03-05 吴中区甪直渡岘工艺品厂 Coiling rod with changeable diameter

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707599A (en) * 1952-01-12 1955-05-03 Benjamin H Snyder Adjustable wire and cable reel
US2877962A (en) * 1957-02-18 1959-03-17 Todd C Self-centering coiled stock reel
US5025999A (en) * 1990-02-22 1991-06-25 Littrell Chester G Coil winding form apparatus
CN1081422A (en) * 1992-07-22 1994-02-02 西北煤矿机械总厂二厂 Reel axle for removable conveyer belt
CN201525657U (en) * 2009-10-21 2010-07-14 太原钢铁(集团)有限公司 Leather belt recovery device
CN201553498U (en) * 2009-10-29 2010-08-18 天津钢铁集团有限公司 Chain transmission conveyor belt batching machine
CN201618734U (en) * 2010-03-18 2010-11-03 无锡平盛科技有限公司 Unloading belt pulley of drawing-wire machine
CN102815565A (en) * 2012-08-24 2012-12-12 安徽理工大学 Combined multifunctional tape winding and unwinding device
CN103434870A (en) * 2013-09-10 2013-12-11 乔磊 Mining tape winder
CN103612954A (en) * 2013-12-02 2014-03-05 吴中区甪直渡岘工艺品厂 Coiling rod with changeable diameter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107934453A (en) * 2017-12-16 2018-04-20 苏州市吴江区英飞大自动化设备有限公司 Pusher module
CN109335765A (en) * 2018-09-11 2019-02-15 中冶宝钢技术服务有限公司 Device and its application method for belt replacing
CN109335765B (en) * 2018-09-11 2020-07-03 中冶宝钢技术服务有限公司 Device for belt replacement and method of use

Similar Documents

Publication Publication Date Title
CN102935575B (en) Large-pipe-diameter shell section pair group extension device
CN205294196U (en) Belted steel finishing district extension roller table turn mechanism
CN204639885U (en) A kind of pay-off of stainless steel tube polishing machine
CN105584817B (en) A turning device for accurate sand blasting machine
CN210260136U (en) Pressing device for steel tractor
CN206088283U (en) Hopper drives formula ore delivery device that topples
CN208005159U (en) A kind of tubing joint close automatic assembly line
CN104609227A (en) Machine-assisted belt winding device
CN106825281B (en) A kind of tubing feeding in continuous material mechanism
CN104355151A (en) Nylon leather belt recycle collator
CN211413421U (en) Hot stamping automatic feeding device
CN105215103B (en) A kind of U-shaped heating tube continuous processing equipment
CN211418540U (en) Extensible movable belt conveyor
CN205834065U (en) A kind of wire bidirectional-straightening device
CN203622114U (en) Special grinding machine for roll machining
CN203508640U (en) Automatic pipe coiling machine
CN105414224A (en) Pointing device used for rolling mill production system
CN105059967B (en) A kind of shunting even distribution device for roller picker
CN205098852U (en) Conveyor
CN203791980U (en) Multi-strip slitting and winding combination machine
CN203357194U (en) Bearing polishing device with controller
CN206108303U (en) Hopper is from toppling formula ore delivery device
CN206942698U (en) A kind of petroleum machinery drill pipe tong
CN206445648U (en) A kind of arc locking face polishing machine
CN205436653U (en) Rolling mill production system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20150513

RJ01 Rejection of invention patent application after publication