CN211072467U - Open arc on-line surfacing repair device of medium-speed grinding disc - Google Patents
Open arc on-line surfacing repair device of medium-speed grinding disc Download PDFInfo
- Publication number
- CN211072467U CN211072467U CN201921316035.0U CN201921316035U CN211072467U CN 211072467 U CN211072467 U CN 211072467U CN 201921316035 U CN201921316035 U CN 201921316035U CN 211072467 U CN211072467 U CN 211072467U
- Authority
- CN
- China
- Prior art keywords
- welding
- grinding disc
- wire
- medium
- speed
- 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.)
- Active
Links
Images
Landscapes
- Arc Welding In General (AREA)
Abstract
The utility model provides an open arc on-line surfacing prosthetic devices of medium speed mill, includes P L C welding control box and the electric welding machine, the welding dolly, dual drive wire feeder, limit switch who connect with it, set up welder above the mill quotation, the welder rear end passes through the connecting rod and communicates with dual drive wire feeder, welding wire straightening mechanism in proper order, penetrates the welding wire of placing on wire feeder in the silk entry of welding wire straightening mechanism, dual drive wire feeder passes through welder angle adjustment mechanism and installs on the welding dolly, mill outer fringe department is provided with the touch bar, this touch bar and the limit switch position adaptation of coal bunker wall mounting, and condenser tube communicates welder and circulation tank's access & exit respectively, forms the closed loop, the utility model discloses carry out on-line surfacing prosthetic devices to the mill under the condition of not dismantling the mill, can practice thrift a large amount of manpower, material resources, shorten the overhaul period.
Description
Technical Field
The utility model belongs to build-up welding device field, in particular to online build-up welding prosthetic devices of open arc of intermediate speed mill.
Background
The medium-speed grinding disc (hereinafter referred to as grinding disc) drives the grinding roller to grind raw coal falling from the central coal dropping pipe in production. The millstone runs at a higher temperature, and bears a larger grinding pressure and a larger impact force caused by raw coal, and the effective grinding area of the millstone is reduced along with the continuous impact and abrasion of raw materials to the millstone, so that wavy lines are formed, and the equipment efficiency is sharply reduced. When the grinding disc is worn to a scrapped size, only a new grinding disc can be replaced. The grinding disc is generally made of high-chromium wear-resistant steel and high-chromium cast iron materials, so that the grinding disc has good wear resistance, but is expensive to manufacture, complex in replacement procedure, long in period and high in cost.
SUMMERY OF THE UTILITY MODEL
The utility model provides an online build-up welding prosthetic devices of open arc of intermediate speed mill has ensured that the online build-up welding mill of open arc can carry out continuity of operation, shortens the maintenance time limit for a project, practices thrift a large amount of manpower, material resources.
The utility model discloses the technical scheme who adopts does:
an open arc online surfacing repair device of a medium-speed grinding disc comprises a P L C welding control box, wherein a grinding disc driving device is installed at the bottom of a grinding disc, a welding gun is arranged above the surface of the grinding disc, the rear end of the welding gun is sequentially communicated with a dual-drive wire feeder and a welding wire straightening mechanism through a connecting rod, a welding wire placed on the wire feeder penetrates through a wire inlet of the welding wire straightening mechanism, the dual-drive wire feeder is installed on a welding trolley through a welding gun angle adjusting mechanism, a touch rod is arranged at the outer edge of the grinding disc and is matched with a limit switch installed on the wall of a coal bunker in position, a cooling water pipe respectively communicates the welding gun with an inlet and an outlet of a circulating water tank to form a closed loop, and an electric welding machine is connected with the welding trolley, the dual-drive wire feeder and the limit.
The grinding disc driving device comprises an I-shaped flange, one end of the I-shaped flange is connected with a main shaft of a medium-speed grinding motor to connect the grinding disc into a whole, the other end of the I-shaped flange is connected with a speed reducer after being connected with a universal coupling, the speed reducer is connected with a driving motor, and the speed reducer is connected with a grinding disc driving control box through a control line.
The wire feeding device comprises a wire feeding disc, the wire feeding disc is installed on an outer ring of the self-aligning roller bearing, and the self-aligning roller bearing is installed on a shaft fixed on the base.
Including the wind package, be equipped with a plurality of joints on this wind package, be equipped with the choke valve on a plurality of these joints, connect and tuber pipe intercommunication, the tuber pipe other end is fixed to the side of waiting to build-up welding mill welding bead.
The utility model discloses a prosthetic method of open arc on-line surfacing is welded the restoration to the mill that wears to a certain size. When repairing, only the on-line surfacing equipment and the welding wire are needed to be transported to a medium-speed grinding working site, the manhole door is opened, and the surfacing equipment is installed in the coal mill bin, so that the grinding disc is repaired by the wear-resistant flux-cored welding wire on line in the condition of not removing the grinding disc. Because the links of disassembling, hoisting and assembling the grinding disc do not exist in the whole online repairing process, a large amount of manpower and material resources can be saved, and the overhaul period is shortened.
The utility model adopts the water cooling circulation system to make the welding equipment stably operate; the grinding disc is easy to drive and install and controllable in frequency conversion by adopting a worm gear reducing motor for driving and a universal coupling; controlling the temperature between welding layers by adopting an air cooling system; the dual-drive wire feeding system is adopted to drive the wire feeding disc to rotate for wire feeding, so that the wire feeding is smooth and stable; and the wear resistance of the overlaying layer meets the repair requirement by adopting the wear-resistant flux-cored wire.
The open arc on-line surfacing grinding disc is a cold welding repair method, and the temperature between welding layers is strictly controlled in the whole surfacing process. The coal pulverizer inner space is narrow and small, and welding temperature rises very fast, when actual build-up welding, through using compressed air to carry out the blast cooling to the build-up welding layer to guarantee that welding interlayer temperature satisfies technical requirement.
The power supply of the on-line surfacing equipment adopts a Radi inverter power supply, the machine has the characteristics of constant voltage, constant current, steep drop and the like, and is multipurpose, efficient, energy-saving and suitable for continuous surfacing welding. The dual-drive wire feeder adopts a four-wheel direct-current wire feeding mode, the speed is continuously adjustable, the output current of the welding machine is directly controlled, the welding forming is good, and the wire feeding is stable. The welding gun adopts a special water-cooling welding gun, and the welding gun is maintained at a lower temperature through circulating water cooling, so that the continuous and stable surfacing process is ensured. The millstone is driven by a 4KW worm turbine speed reducing motor, the transmission is universal joint transmission, the millstone is connected with the fan side of a motor of the mill and is connected with a main shaft of a motor of the medium-speed mill through a flange, the speed regulating part adopts frequency conversion speed regulation, and the rotating speed is stepless and adjustable.
The configurations ensure that the open arc on-line surfacing grinding disc can carry out continuous operation, shorten the overhaul period, and have attractive weld bead forming, stable welding performance and better popularization and application values.
The following is the effect that the utility model discloses the actual use shows after 2 years:
1. the equipment runs smoothly, the working efficiency is high, and the abrasive disc surfacing welding quality is excellent. And the increase of the sales income by 450 ten thousand yuan is realized in 2018, and the increase of the sales income by 446 ten thousand yuan is realized in 2019.
2. And the overhaul period is shortened: the open arc on-line surfacing medium-speed grinding disc can save links of disassembling, hoisting and assembling the grinding disc in the conventional off-line repairing process, shorten the maintenance period and save the cost. The off-line repair of the grinding disc of the medium-speed mill comprises five steps, namely, the grinding roller is disassembled (the grinding disc can be disassembled after the grinding roller is disassembled), the grinding disc is disassembled, the off-line surfacing grinding disc, the grinding disc is assembled and the grinding roller is assembled, the construction period is 12-15 days, the on-line surfacing of the grinding disc of the medium-speed mill is only 2 days, and the maintenance period of the medium-speed mill is also guaranteed.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the drawing, 1, a grinding disc, 2, a conductive nozzle, 3, a welding gun, 4, a cooling water pipe, 5, a connecting rod, 6, a welding gun angle adjusting mechanism, 7, a Y-axis (vertical) walking track, 8, a welding trolley, 9, a dual-drive wire feeder (Z5D 150), 10, a welding wire straightening mechanism, 11, a walking track rib plate, 12, an inner wall of a coal mill, 13, an X-axis (horizontal) walking track, 14, a wire feeding hose, 15, a welding trolley control line, 16, a dual-drive wire feeder control line, 17, a limit switch, 18, a touch rod, 19, a welding wire barrel, 20, a wire feeding disc, 21, a self-aligning roller bearing (22220 CA/W33), 22, a shaft, 23, a base, 24, P L C welding control box (CG-1000 AKZX), 25, a control line, 26, an intermediate speed welding machine (MZ-1000), 27, a limit switch control line, 28, a remote controller control line, 29, a remote controller, 30, a circulating water tank, 31, a grinding disc driving control box (MPKZX-7.5), a grinding disc drive motor, a turbine coupling, a motor, a speed reducer, a motor, a speed reducer.
Detailed Description
The present invention and the effects thereof will be further explained with reference to the accompanying drawings.
Referring to fig. 1, the open arc online surfacing repair device for the grinding disc of the medium-speed mill comprises a P L C welding control box, a grinding disc driving device is mounted at the bottom of the grinding disc 1, a welding gun 3 is arranged above the disc surface of the grinding disc 1, the rear end of the welding gun 3 is communicated with a wire outlet of a dual-drive wire feeder 9 through a connecting pipe 5, a wire inlet of the dual-drive wire feeder 9 is communicated with a wire outlet of a welding wire straightening mechanism, a welding wire placed on the wire feeder penetrates through the wire inlet of the welding wire straightening mechanism, the dual-drive wire feeder 9 is mounted on a welding trolley 8 through a welding gun angle adjusting mechanism 6, a touch rod 18 is arranged at the outer edge of the grinding disc 1, the touch rod 18 is matched with a limit switch 17 mounted on the wall of a coal bunker in position, a cooling water pipe is arranged at the periphery of the welding gun and is communicated with an inlet and an outlet of a circulation water tank 30, and an electric welding machine 26 is connected.
The P L C welding control box is conventional equipment in the field, is of a model CG-1000AKZX, adopts a touch screen Chinese and English operation in a welding control part, and has the control functions of an X-axis welding stepping function, a Y-axis welding stepping function, an automatic start-stop function, an automatic welding gun falling function, an automatic welding gun stopping and lifting function, an automatic welding wire receiving function, a welding time recording function and the like, and the functions can be freely selected and switched according to actual welding requirements, and parameters can be adjusted.
The welding wire straightening mechanism 10 is a device carried by a Z5D150 dual-drive wire feeder, and the welding gun angle adjusting mechanism 6 is a conventional device carried by a welding gun 3.
A pump is provided in the circulation tank 30.
The electric welding machine, the pump in the circulating water tank, the P L C welding control box and the grinding disc driving control box are all powered by a Racing inverter power supply.
The grinding disc driving device comprises an I-shaped flange 40, one end of the I-shaped flange 40 is connected with a main shaft of a medium-speed grinding motor to connect the grinding disc into a whole, the other end of the I-shaped flange is connected with a speed reducer 34 after being connected with a universal coupling 39, the speed reducer 34 is connected with a driving motor 33, and the speed reducer 34 is connected with a grinding disc driving control box 31 through a grinding disc driving control line 32. The grinding disc driving control box 31 is an existing device, adopts a model of CG-MPKZX7.5, and has two main functions, namely adjusting the rotation direction (clockwise rotation and anticlockwise rotation) of the grinding disc, adjusting the rotation speed of the grinding disc and realizing stepless adjustment of the rotation speed.
The wire feeder includes a wire feed disc 20, the wire feed disc 20 being mounted to an outer ring of a self-aligning roller bearing 21, the self-aligning roller bearing 21 being mounted to a shaft 22 fixed to a base 23.
The shaft 22 is firstly installed on the base 23, the self-aligning roller bearing 22220CA/W33 is installed on the shaft, and finally the whole wire feeding disc 20 is installed on the outer ring of the self-aligning roller bearing. When the welding wire straightening device works, the welding wire barrel 19 is placed on the wire feeding disc, the wear-resistant flux-cored welding wire penetrates through the welding wire straightening mechanism, the dual-drive wire feeder, the water-cooled welding gun and the conductive nozzle, and the welding wire exposed outside is protected by the wire feeding hose to prevent short circuit. When the dual-drive wire feeder pulls the welding wire to advance, the welding wire barrel rotates on the wire feeding disc, so that torsion of the welding wire in the barreling process is offset, the welding wire is prevented from rotating in the surfacing process, the surfacing quality is improved, and the consumption of accessories such as a water-cooling welding gun and a conductive nozzle can be reduced.
The utility model discloses still include the air cooling system, it includes wind package 35, is equipped with a plurality of joints 36 on this wind package 35, is equipped with choke valve 37 on a plurality of these joints 36, connects 36 and tuber pipe 38 intercommunication, and the tuber pipe 38 other end is fixed to the side of waiting to build-up welding mill welding bead. The wind packet 35 is a self-made diversion container into which compressed air is introduced at the customer site.
The welding wire exposed to the outside is protected by the wire feed hose 14 against short circuits.
The welding P L C control box is provided with a remote controller 29, so that the operation and the control are convenient.
The mounting method of the open arc on-line surfacing repair device of the medium-speed grinding disc comprises the following steps:
1. jacking a hydraulic cylinder of the medium-speed coal mill to separate the grinding disc from the grinding roller and enable the grinding disc to rotate;
2. cleaning sundries such as coal dust, coal gangue and the like on the surface of the grinding disc and in the coal mill bin;
3. the walking rails are installed, the X-axis (transverse) walking rails are welded and fixed on the inner wall of the coal mill bin, the rib plates are welded, the welding trolley is installed on the X axis in parallel, and the Y-axis (vertical) walking rails are installed on the welding trolley vertically, so that the welding trolley can be controlled to move up and down, left and right.
4. Installing a wire feeding system, installing a dual-drive wire feeder provided with a welding wire straightening mechanism on a welding gun angle adjusting mechanism, and installing the welding gun angle adjusting mechanism on a Y axis so as to enable the whole wire feeding system to be of an integrated structure.
5. Installing a welding gun, installing a connecting rod on the dual-drive wire feeder in a threaded connection mode, installing a water-cooling welding gun on the connecting rod, installing a conductive nozzle at the end part of the water-cooling welding gun, and connecting the water-cooling welding gun with a circulating water tank by using a cooling water pipe.
6. The grinding disc driving device is installed, firstly, the I-shaped flange is fixed on a main shaft of a medium-speed grinding motor through bolts, then, the universal coupling on the original grinding disc drive is connected with the fixed I-shaped flange through the bolts, and finally, the bottom of the grinding disc drive is welded and fixed through angle steel, so that the grinding disc can be driven to rotate through the grinding disc drive.
7. The limit switch 17 is fixed on the inner wall of the coal mill, the touch rod 18 is welded and fixed at the edge part of the grinding disc, and when the grinding disc driving motor drives the grinding disc to rotate, the touch rod can trigger the limit switch.
8. The control lines of the welding trolley, the dual-drive wire feeder, the remote controller, the limit switch and the electric welding machine are connected to a P L C welding control box respectively, the welding control part is operated in a Chinese and English mode through a touch screen, the control functions comprise an X-axis welding stepping function, a Y-axis welding stepping function, an automatic start-stop function, an automatic welding gun falling function, an automatic welding gun lifting function, an automatic wire receiving stopping function, a welding time recording function and the like, the functions can be switched freely according to actual welding requirements, parameters can be adjusted, the grinding disc driving control line is connected to the grinding disc driving control box, and the control part is controlled through variable frequency speed regulation and stepless rotation speed adjustment.
9. And (3) assembling the wire feeding disc, fixing the shaft to the base, installing the self-aligning roller bearing 22220CA/W33 on the shaft, and finally installing the whole wire feeding disc on the outer ring of the self-aligning roller bearing. When the welding wire straightening device works, a welding wire barrel is placed on a wire feeding disc, the wear-resistant flux-cored welding wire penetrates through the welding wire straightening mechanism, the dual-drive wire feeder, the water-cooled welding gun and the conductive nozzle, and the welding wire exposed outside is protected by a wire feeding hose to prevent short circuit. When the dual-drive wire feeder pulls the welding wire to advance, the welding wire barrel rotates on the wire feeding disc, so that torsion of the welding wire in the barreling process is offset, the welding wire is prevented from rotating in the surfacing process, the surfacing quality is improved, and the consumption of accessories such as a water-cooling welding gun and a conductive nozzle can be reduced.
10. And installing an air cooling system, introducing compressed air on the site of a user into an air bag (a self-made flow distribution container with a plurality of joints), and finally fixing a plurality of air pipes to the side of the grinding disc weld bead to be built up.
11. After the grinding disc rotates normally, an automatic welding button on a P L C welding control box is pressed, and when the grinding disc rotates to touch a limit switch, welding is started;
12. and after the grinding disc subjected to online surfacing meets the repair requirement, moving out all the welding equipment, the air pipe, the control line and other articles in the coal mill bin, and sealing the manhole door.
Claims (6)
1. An open arc online surfacing repair device of a medium-speed grinding disc comprises a P L C welding control box and is characterized in that a grinding disc driving device is installed at the bottom of a grinding disc (1), a welding gun (3) is arranged above the surface of the grinding disc, the rear end of the welding gun (3) is sequentially communicated with a dual-drive wire feeder (9) and a welding wire straightening mechanism (10) through a connecting rod (5), a welding wire placed on the wire feeder penetrates through a wire inlet of the welding wire straightening mechanism (10), the dual-drive wire feeder (9) is installed on a welding trolley (8) through a welding gun angle adjusting mechanism (6), a touch rod (18) is arranged at the outer edge of the grinding disc (1), the touch rod (18) is matched with a position limit switch (17) installed on the wall of a coal bin in position, a cooling water pipe (4) respectively communicates the inlet and the outlet of a circulating water tank (30) to form a closed loop, and an electric welding machine (26), the welding trolley (8), the dual-drive wire feeder (9) and the limit switch (17) are connected with the P L C.
2. The open arc on-line surfacing repair device for the medium-speed grinding disc according to claim 1 is characterized in that the grinding disc driving device comprises an I-shaped flange (40), one end of the I-shaped flange (40) is connected with a main shaft of a medium-speed grinding motor to connect the grinding disc into a whole, the other end of the I-shaped flange is connected with a universal coupling (39) and then connected with a speed reducer (34), the speed reducer (34) is connected with the driving motor, and the speed reducer (34) is connected with a grinding disc driving control box through a control line.
3. The open arc on-line surfacing repair device for the grinding disc of the medium-speed mill according to claim 1, wherein the wire feeding device comprises a wire feeding disc (20), the wire feeding disc (20) is mounted on an outer ring of a self-aligning roller bearing (21), and the self-aligning roller bearing (21) is mounted on a shaft (22) fixed on a base (23).
4. The open arc online surfacing repair device for the medium-speed grinding disc according to claim 1 is characterized by comprising an air bag (35), wherein a plurality of joints (36) are arranged on the air bag (35), a throttle valve (37) is arranged on the plurality of joints (36), the joints (36) are communicated with an air pipe (38), and the other end of the air pipe (38) is fixed to the side of a weld bead of the grinding disc to be surfaced.
5. The open arc on-line overlaying repair device for the medium-speed grinding disc according to claim 1, wherein welding wires exposed outside are protected by a wire feeding hose (14).
6. The open arc on-line surfacing repair device for the medium-speed grinding disc according to any one of claims 1-5, characterized in that the P L C welding control box is provided with a remote controller (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921316035.0U CN211072467U (en) | 2019-08-14 | 2019-08-14 | Open arc on-line surfacing repair device of medium-speed grinding disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921316035.0U CN211072467U (en) | 2019-08-14 | 2019-08-14 | Open arc on-line surfacing repair device of medium-speed grinding disc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211072467U true CN211072467U (en) | 2020-07-24 |
Family
ID=71638611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921316035.0U Active CN211072467U (en) | 2019-08-14 | 2019-08-14 | Open arc on-line surfacing repair device of medium-speed grinding disc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211072467U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110539123A (en) * | 2019-08-14 | 2019-12-06 | 甘肃酒钢集团西部重工股份有限公司 | Open arc online surfacing repair device and method for medium-speed grinding disc |
-
2019
- 2019-08-14 CN CN201921316035.0U patent/CN211072467U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110539123A (en) * | 2019-08-14 | 2019-12-06 | 甘肃酒钢集团西部重工股份有限公司 | Open arc online surfacing repair device and method for medium-speed grinding disc |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102357492B (en) | Spinning purging device for inner wall of steel pipe | |
| CN103537983B (en) | A kind of fixture of welding wheel weld seam of polishing and polishing process | |
| CN2863338Y (en) | Building-up welding apparatus for antifriction plate | |
| CN211072467U (en) | Open arc on-line surfacing repair device of medium-speed grinding disc | |
| CN206898546U (en) | A kind of vertical circular seam welding machine | |
| CN210939870U (en) | Concrete mixing plant grit automatic feeding device | |
| CN206373469U (en) | A kind of continuous submerged arc overlaying welding device of large-scale milling roller surface | |
| CN211072468U (en) | Open arc on-line surfacing repair device of medium-speed grinding roller | |
| CN113441814B (en) | Improved wear-resisting plate surfacing welding machine | |
| CN106238993B (en) | One kind is applied to penstock stiffening ring automatic welding system and welding method | |
| CN103273168B (en) | Tungsten carbide suspended bead welding method and device | |
| CN215234904U (en) | Novel crushing and grinding machine | |
| CN110539124A (en) | Open arc online surfacing repair device and method for medium-speed grinding roller | |
| CN109365763B (en) | Thermal plasma casting repair roller equipment and method | |
| CN202318010U (en) | Shot blasting device capable of automatically recovering steel shot, and metal surface treating machine applying shot blasting device | |
| CN202640167U (en) | Portable movable type double-shot-blasting-head steel plate surface pre-processor | |
| CN110539123A (en) | Open arc online surfacing repair device and method for medium-speed grinding disc | |
| CN209588710U (en) | A kind of smelting copper alloy raw material feeding device | |
| CN206735161U (en) | A kind of gravel conveyer | |
| CN205464722U (en) | Build -up welding device | |
| CN211219309U (en) | Wear-resistant surfacing device for inner wall of dust removal pipeline of machinery plant | |
| CN207255947U (en) | A kind of pipe, the quick grooving apparatus of plate piece | |
| CN201291339Y (en) | Edge-runner pan, roller self-protection flux-cored wire on-line automatic building-up device | |
| CN208051210U (en) | Automatic dusting build-up welding apparatus | |
| CN112676730B (en) | Maintenance method for vertical mill hammer head of sintering machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |