CN110802365A

CN110802365A - Roller ring repairing device and method of cylinder mixer

Info

Publication number: CN110802365A
Application number: CN201910428758.8A
Authority: CN
Inventors: 许祥; 陈亚涛
Original assignee: Tangshan Heavy Equipment Metallurgical Engineering Technology Co Ltd
Current assignee: Tangshan Heavy Equipment Metallurgical Engineering Technology Co Ltd
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2020-02-18

Abstract

The invention provides a roller ring repairing device and a roller ring repairing method of a cylinder mixer, wherein the roller ring repairing device of the cylinder mixer comprises a supporting frame, a trunnion, a centering device, a transmission device, a roller ring turning device and a roller ring grinding device; one end of the trunnion is rotatably arranged on the support frame, the other end of the trunnion is connected with a support shaped like a Chinese character 'mi', and the support shaped like a Chinese character 'mi' is fixedly connected in the cylinder body; the aligning device is arranged on the trunnion and is arranged at two ends in the barrel; the centering device is arranged on the cylinder body; the roll collar turning device and the roll collar grinding device are arranged on one side of the cylinder body and are parallel and level to the horizontal central line of the roll collar outside the cylinder body; the transmission device is in transmission connection with the cylinder body to drive the cylinder body to rotate around the supporting frame, so that the roll ring turning device and the roll ring grinding device perform turning and fine grinding on the roll ring; according to the technical scheme provided by the invention, the roller ring on the cylinder body is repaired, the repairing precision of the roller ring is high, and the vibration of the cylinder mixer caused by the fact that the roller ring is not stressed concentrically to operate is avoided.

Description

Roller ring repairing device and method of cylinder mixer

Technical Field

The invention belongs to the technical field of repair of a cylindrical mixer, and particularly relates to a roller ring repair device and method of the cylindrical mixer.

Background

The cylindrical mixer is one of important devices in a sintering and pelletizing system, can be used for multiple purposes such as raw material mixing, pelletizing and the like, and meets the requirements of a sintering machine on raw materials; the cylinder mixer is provided with an inclination angle of 1.5-4 degrees, so that the height difference is generated between the center of the feeding opening and the center of the discharging opening of the cylinder body, and the materials move forwards under the component force of the gravity of the materials while being mixed; the whole cylinder body is located on the front and rear groups of riding wheel devices through two roller rings and can rotate freely; a group of blocking wheels are arranged on a foundation base of the front riding wheel group (positioned at the discharging end), and the blocking wheels are contacted with the side surface of the roller ring to bear the downward sliding force of the cylinder body and restrict the axial movement of the cylinder body; the transmission device is arranged on a base on the side surface of the cylinder body, and the cylinder body is rotated through a transmission small gear and a large gear ring meshing platform on the cylinder body device; at present, cylinder mixers are mostly used in the external sintering production, along with the daily increase of the scale of a sintering machine, the cylinder mixers are increased, the mixing is in a single-line configuration in the sintering process, and once the mixers break down, the whole sintering system is directly stopped.

Based on the above-mentioned theory of operation and structure, there are following shortcomings in current mixer:

1. the single equipment has large specification, the diameter of the cylinder of the existing mixing machine is generally 4-5 meters, the length is 18-25 meters, the weight of the single equipment is 150-250 tons, and the single equipment is difficult to disassemble and return to the factory for maintenance after the equipment is put into operation.

2. The mixer is generally in indoor work, and the cylinder body is large in size, so that a part of a factory building needs to be dismantled and returned to a factory if the cylinder body needs to be dismantled, and road transportation is very difficult.

3. The whole machine of the mixing machine has long service life, and in the long-time production process, under the long-time heavy load state of the roller ring and the carrier roller, the surface of the roller ring has skin shedding, the roller ring falls off on the spot, scars with different sizes appear on the surface, and equipment vibration is caused.

4. The barrel of the mixing machine is a welded barrel, the stress of part of the barrel is not completely released before leaving a factory, three working circumferences of the roller rings and the gear rings on two sides are not on the same central line with the barrel, and the barrel is vibrated.

5. The roller ring of the mixing machine is large in single-room appearance and thin in wall thickness, and after the roller ring is used for a period of time, stress of the roller ring is released, so that the roller ring is out of round, and equipment is vibrated.

6. In daily maintenance, the vibration caused by scars on the surface of the roller ring can be reduced only by replacing the carrier roller, and the root cause can not be solved.

The conventional repairing method comprises the steps of utilizing the system overhaul time of more than thirty days of the construction period of a sintering plant, dismantling the roof or the side wall of a workshop, dismantling the transmission and the accessory facilities of the cylinder body, hoisting the cylinder body out through two 200-ton cranes, returning the cylinder body to a manufacturing plant through steam transportation, installing the cylinder body on a cylinder body lathe, and re-processing the roller rings on two sides; and after the processing is finished and the technical requirements are met, the steel tube is transported back to a sintering plant, the tube body is reinstalled, and after the debugging is qualified, the plant facilities are restored again.

The Chinese invention patent 201710419148.2 discloses a field milling device and a milling method for a backing ring of a sintering mixer, which can also solve the problem of vibration of the mixer, but has the following defects:

although the surface of the roller ring of the cylindrical mixer is treated to obtain a certain excircle and finish, the concentricity of the two roller rings and the large gear ring have no reference, the vibration condition can be only temporarily relieved after the repair, the vibration problem cannot be completely eliminated, and after the cylindrical mixer is operated for a period of time, the non-concentric forced operation is continuously accumulated under the condition of heavy load, so that the vibration is more and more obvious; because there is no centre of a circle location, the concentricity deviation is bigger after processing, causes the shake condition before exceeding the maintenance, even mixes the machine and can't use at all.

Disclosure of Invention

The invention aims to provide a roller ring repairing device and a roller ring repairing method of a cylindrical mixer aiming at overcoming the defects in the prior art, and aims to solve the problems that after the roller ring of the cylindrical mixer is machined, the concentricity deviation is large, and the vibration is easy to increase.

The invention provides a roller ring repairing device of a cylinder mixer, which comprises a supporting frame, a trunnion, a centering device, a transmission device, a roller ring turning device and a roller ring grinding device, wherein the trunnion is arranged on the supporting frame; one end of the trunnion is rotatably arranged on the support frame, the other end of the trunnion is rotatably connected with a support shaped like a Chinese character 'mi', and the support shaped like a Chinese character 'mi' is fixedly connected in the cylinder body; the aligning device is arranged on the trunnion and is arranged at two ends in the barrel; the centering device is arranged on the cylinder body to determine the center line of the cylinder body; the roll collar turning device and the roll collar grinding device are arranged on one side of the cylinder body and are parallel and level to the horizontal central line of the roll collar outside the cylinder body; the transmission device is in transmission connection with the cylinder body to drive the cylinder body to rotate around the supporting frame, so that the roll ring turning device and the roll ring grinding device can turn and finish the roll ring.

Further, the trunnion comprises a bearing seat, a self-aligning roller bearing, a rotating shaft and a supporting plate; the bearing frame is installed on the support frame, and in the bearing frame was located to self-aligning roller bearing, axis of rotation and self-aligning roller bearing interference fit, the supporting disk is rotatable to be located in the axis of rotation, and rice word support connection is on the supporting disk.

Further, the aligning device comprises a radial supporting device and an adjusting screw rod; the radial supporting device is installed on the rotating shaft, one end of the adjusting screw rod is arranged on the radial supporting device, and the other end of the adjusting screw rod is abutted to the end of the barrel body so as to preliminarily adjust and align the center line of the barrel body.

Further, the centering device comprises a centering short shaft, an equidistant scale, a laser line marker and a steel wire scale; the centering short shaft is installed on the trunnion, and the equidistance scale is located on the centering short shaft, and laser graticule appearance and steel wire scale are located on the equidistance scale to detect barrel and roller circle and ring gear tip runout volume, thereby confirm the barrel central line.

Furthermore, the transmission device comprises a first motor, a speed reducer, a transmission roller and a transmission belt, wherein the output end of the first motor is in transmission connection with the input end of the speed reducer, the output end of the speed reducer is connected with the transmission roller, and the transmission belt is sleeved on the transmission roller and the cylinder body; still include belt tightener, belt tightener installs on the transmission belt.

Furthermore, the bed body is arranged on one side of the barrel and is level with the horizontal central line of the barrel; the roller ring turning device comprises a turning tool walking device, a sliding rail and a transmission lead screw; the lathe tool walking device is provided with a sliding table, and the sliding table is provided with a lathe tool; the roller ring grinding device comprises a second motor, a gearbox and a grinding wheel, wherein the second motor, the gearbox and the grinding wheel are mounted on the sliding table, the output end of the second motor is in transmission connection with the input end of the gearbox, and the grinding wheel is connected to the output end of the gearbox.

Furthermore, the support frame comprises an upright post, a cross beam and a bearing seat gasket; the stand and the crossbeam are many, and the crossbeam is connected on the stand, and the bearing frame gasket is located on the crossbeam.

Correspondingly, the invention also provides a roller ring repairing method of the cylinder mixer, which is applied to the roller ring repairing device of the cylinder mixer; further comprising the steps of:

s1: welding a cross-shaped support in the two ends of the cylinder body, cutting off the two ends of the cylinder body along the axial thickness of 40mm, and welding positioning blocks at the two ends before cutting off; installing radial supporting devices of the aligning device at two ends of the inner part of the cylinder body, and adjusting the adjusting screw rod to enable the radial supporting devices to support the cylinder body, so as to perform preliminary alignment on the processing surface of the roller ring on the cylinder body;

s2: a centering device is arranged on the cylinder body, and a laser marking instrument is used for accurately aligning through positioning through holes on the two trunnions; leading out the central lines of the two trunnions to the outer side of the cylinder in a laser line mode, and measuring the surface runout of a roller ring and a gear ring on the cylinder; determining the central line of the cylinder by using the intermediate value of the runout of the roller ring and the numerical value of +/-1 mm of the runout of the gear ring;

s3: after the central line is determined, welding and fixing the Mi-shaped support on the supporting plate of the trunnion, and re-measuring the size of the central line of the cylinder after welding; establishing support frames at two sides of the trunnion, leveling the cylinder by using a jack to match with a tool, and installing bearing blocks at two ends of the trunnion on the support frames;

s4: after the cylinder is leveled, arranging a bed body on the side surface of the roller ring, and installing a roller ring turning device and a roller ring grinding device on the bed body;

s5: starting a transmission device to drive the cylinder to rotate, and rechecking the surface runout quantity of the roller rings on two sides by using a dial indicator to determine the minimum cutting depth; and after turning of the roller ring is finished, the roller ring grinding device is switched to grind the turned roller ring.

Further, the levelness of the slide rail on the bed body in the step S4 is adjusted to +/-0.5 mm; the concentricity of the slide rail takes a laser line led out from the central line of the cylinder as a reference; the parallelism of the slide rails is +/-0.5 mm.

Further, the surface roughness of the roll ring processing of step S5 is not more than 6.3 μm; the radial runout of the roller ring is not more than 1 mm; the radial runout of the big gear ring of the roller ring is less than 2 mm.

By adopting the technical scheme and the method, the following beneficial effects are achieved:

through repairing the roller ring of barrel, guarantee that the centre of a circle of barrel both sides roller ring and ring gear is on same central line after repairing, the roller ring is restoreed the precision height, avoids the drum to mix vibrations that the machine caused because of the operation of the eccentric atress of roller ring, extension barrel life to promote the stability and the reliability that the drum mixed the machine, effectively reduce the cost of maintenance and the cost of changing.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The invention will be further explained with reference to the drawings, in which:

FIG. 1 is a side view of a roll collar repair apparatus of a drum mixer of the present invention;

FIG. 2 is a top view of a roll collar repair apparatus for a drum mixer of the present invention;

FIG. 3 is a schematic view of a centering device of a roll collar repair device of a drum mixer of the present invention;

FIG. 4 is a schematic view of a trunnion for repairing a roll collar of a drum mixer of the present invention;

FIG. 5 is a schematic view of a centering device of the roll ring repairing device of the drum mixer according to the present invention;

FIG. 6 is a flow chart of a method for repairing a roller ring of a cylindrical mixer according to the present invention.

In the figure: 1-a support frame; 2-trunnion; 3-a centering device; 4-a centering device; 5-a transmission device; 6-turning device of the roller ring; 7-a roll collar grinding device; 8-barrel body; 9-roll ring; 10-bed body; 11-upright post; 12-a cross beam; 13-m-shaped bracket; 14-a gear ring; 21-a bearing seat; 22-a rotating shaft; 23-self-aligning roller bearings; 24-a support disk; 31-radial support means; 32-adjusting the lead screw; 41-centering stub shaft; 42-isometric scale; 43-laser striping machine; 44-a steel wire scale; 51-a first motor; 52-a speed reducer; 53-driving the drum; 54-a drive belt; 61-a slide table; 62-turning tool.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 5, the present invention provides a roller ring repairing device of a cylinder mixer, which comprises a supporting frame 1, a trunnion 2, a centering device 3, a centering device 4, a transmission device 5, a roller ring turning device 6 and a roller ring grinding device 7; one end of the trunnion 2 is rotatably arranged on the support frame 1, the other end of the trunnion 2 is rotatably connected with a bracket 13 shaped like a Chinese character 'mi', and the bracket 13 shaped like a Chinese character 'mi' is fixedly connected in the cylinder body 8; specifically, both ends of the cylinder 8 are connected to the trunnion 2 through a bracket 13 shaped like a Chinese character 'mi'; the aligning device 3 is arranged at two ends of the interior of the cylinder 8 so as to perform primary alignment on the central line of the cylinder 8; specifically, the trunnion 2 comprises a bearing seat 21, a self-aligning roller bearing 23, a rotating shaft 22 and a supporting plate 24, the bearing seat 21 is installed on the supporting frame 1, the self-aligning roller bearing 23 is arranged in the bearing seat 21, the rotating shaft 22 and the self-aligning roller bearing 23 are in interference fit so that the rotating shaft 22 rotates in the bearing seat 21, the supporting plate 24 is rotatably arranged on the rotating shaft 21 through a bearing, and the cross-shaped support 13 is connected to the supporting plate 24 so as to support the cylinder 8 and rotatably connect the cylinder 8 to the trunnion 2; specifically, the aligning device 3 includes a radial support device 31 and an adjusting screw rod 32, the radial support device 31 is mounted on the support plate 24 on the rotating shaft 22, one end of the adjusting screw rod 32 is arranged on the radial support device 31, the other end of the adjusting screw rod 32 abuts against the end of the cylinder 8, and the center line of the cylinder 8 is preliminarily aligned by adjusting the adjusting screw rods 32 at the two ends of the cylinder 8; the centering device 4 is arranged on the cylinder 8; specifically, the centering device 4 comprises a centering short shaft 41, an equidistant scale 42, a laser graticule instrument 43 and a steel wire scale 44, the centering short shaft 41 is installed on the trunnion 2, the equidistant scale 42 is arranged on the centering short shaft 41, the laser graticule instrument 43 and the steel wire scale 44 are arranged on the equidistant scale 42, the laser graticule instrument 43 can project the central line of the cylinder 8 to the outside of the cylinder 8 without being interfered by the rotation of the cylinder 8 so as to detect the jumping quantity of the cylinder 8, the outside roller ring 9 and the end part of the gear ring 14 of the cylinder 8, and errors are comprehensively analyzed so as to determine the final central line of the; the roll collar turning device 6 and the roll collar grinding device 7 are arranged on one side of the cylinder body 8 and are flush with the horizontal central line of the outer roll collar 9 of the cylinder body 8; the transmission device 5 is in transmission connection with the cylinder 8 to drive the cylinder 8 to rotate around the support frame 1, so that the roller ring turning device 6 turns the roller ring 9, and the roller ring grinding device 7 is switched to perform fine grinding on the roller ring 9 after turning is completed, so that the roller ring 9 with high precision is obtained; specifically, the roll collar turning device 6 firstly turns the roll collar 9 with the determined center line, and then the roll collar grinding device 7 is switched to grind after turning is finished; the repaired surface roughness of the roller ring 9 is not more than 6.3 mu m, the radial runout is not more than 1mm, and the radial runout of the large gear ring 14 is less than 2mm, so that the repairing precision of the roller ring 9 is ensured, the problem of vibration during the operation of the cylinder 8 is avoided, and the reliability of the cylinder mixer is greatly improved; further, the support frame 1 comprises a plurality of upright columns 11, a plurality of cross beams 12 and a plurality of bearing seat gaskets (not shown), the cross beams 11 and the cross beams 12 are connected to the upright columns 11, the bearing seat gaskets are arranged on the cross beams 12, and one ends of the trunnions 2 are connected with the bearing seat gaskets through the bearing seats 21, so that the trunnions 2 rotate around the support frame 1 through the bearing seats 21; specifically, trunnions 2 provided with aligning devices 3 are arranged at two ends of a cylinder body 8, the center line of the cylinder body 8 is preliminarily aligned through the aligning devices 3, then a centering device 4 is arranged outside the cylinder body 8, the cylinder body 8 is driven by slow driving, the end jumping quantities of the cylinder body 8, an external roller ring 9 of the cylinder body 8 and a gear ring 14 are detected, errors are comprehensively analyzed, the center line of the cylinder body 8 is determined, the trunnions 2 are adjusted according to the center line, after the adjustment is finished and the trunnion 2 and the cylinder body 8 are reinforced, the cylinder body 8 is horizontally supported in situ by using a jack, and bearing seats 21 at the ends of the trunnion 2 are placed on cross beams 12 of horizontal support frames 1 at two sides and fixedly connected with bearing seat; specifically, when the cylinder 8 is not mounted on the support frame 1, the cylinder 8 is mounted on a carrier roller and driven by a big gear and a small gear of the device, and the slow drive is a driving device of the mixer; the installation transmission device 5 drives the cylinder 8 to rotate, the roll collar turning device 6 and the roll collar grinding device 7 are installed at the horizontal center position of the roll collar 9, and the centering device 4 is used for re-alignment; after turning is finished, the roller ring grinding device 7 is switched to carry out fine grinding so as to obtain a roller ring 9 with high precision; adopt above-mentioned technical scheme, through the roller circle 9 to barrel 8 restoreing, guarantee that the centre of a circle of 8 both sides roller circles 9 of barrel and ring gear 14 after the restoration is on same central line, roller circle 9 restores the precision height, avoids the drum to mix the vibrations that the machine caused because of roller circle 9 decentraction atress operation, extension barrel 8 life to promote the stability and the reliability that the drum mixed the machine, effectively reduce the cost of maintenance and the cost of changing.

Preferably, with reference to the above scheme, as shown in fig. 1 to 2, in this embodiment, the transmission device 5 includes a first motor 51, a speed reducer 52, a transmission roller 53 and a transmission belt 54, an output end of the first motor 51 is in transmission connection with an input end of the speed reducer 52, an output end of the speed reducer 52 is connected with the transmission roller 53, and the transmission belt 54 is sleeved on the transmission roller 53 and the cylinder 8, so that the first motor 51 drives the transmission roller 53 to rotate by driving the speed reducer, and thus the transmission belt 54 sleeved on the transmission roller 53 drives the cylinder 8 to rotate together, so as to implement turning and grinding of the roller ring 9; the roller ring repairing device is characterized by further comprising a belt tensioning device, wherein the belt tensioning device is arranged on the transmission belt, the tensioning device effectively improves the tension of the transmission belt 54, and meanwhile, the opening angle of the transmission belt 54 can be adjusted to avoid vibration of the cylinder 8 caused by shaking of the transmission belt 54 in the operation process, so that the precision of turning and grinding is influenced, the repairing precision of the roller ring 9 is effectively guaranteed, and the repairing efficiency is improved.

Preferably, with the above scheme, as shown in fig. 1 to 2, in this embodiment, the bed further includes a bed body 10, and the bed body 10 is disposed on one side of the cylinder 8 and is flush with the horizontal center line of the cylinder 8; the roll collar turning device 6 comprises a turning tool walking device (not shown), a slide rail (not shown) and a transmission screw rod (not shown); the slide rail is longitudinally arranged on the bed body 10, the turning tool walking device and the transmission lead screw are arranged on the slide rail, the transmission lead screw is connected with the turning tool walking device, the turning tool walking device is provided with a sliding table 61, and the sliding table 61 is provided with a turning tool 62; specifically, the transmission screw is connected with the turning tool travelling device to control the turning tool travelling device to advance and retreat, and the sliding table 61 slides left and right on the turning tool travelling device to realize the movement of the turning tool 62 in four directions, so that the turning precision of the roller ring 9 is ensured; the roller ring grinding device 7 comprises a second motor (not shown), a gearbox (not shown) and a grinding wheel (not shown), wherein the second motor (not shown), the gearbox (not shown) and the grinding wheel (not shown) are arranged on the sliding table 61, the output end of the second motor is in transmission connection with the input end of the gearbox, and the grinding wheel is connected with the output end of the gearbox; specifically, after turning the roller ring 9, the roller ring grinding device 7 is switched to grind the roller ring 9; specifically, the switching between the roll collar turning device 6 and the roll collar grinding device 7 can be realized by dismounting and replacing, after turning is finished, the roll collar turning device 6 is dismounted, and the roll collar grinding device 7 is mounted on the sliding table 61 through a base mounting plate, so that the roll collar 9 is ground; the switching between the roll collar turning device 6 and the roll collar grinding device 7 can be realized by setting rotary switching, only the rotary switching device is needed to be arranged on the sliding table 61, the roll collar turning device 6 and the roll collar grinding device 7 are respectively arranged at two ends of the rotary switching device, and when turning is needed, one end of the roll collar turning device 6 is switched to turn the roll collar 9; when needs carry out the grinding, rotatory auto-change over device switches over roller circle grinding device 7 and grinds roller circle 9, and convenient and fast reduces hand labor power, improves machining efficiency.

Correspondingly, in combination with the above solution, as shown in fig. 6, the present invention further provides a roller ring repairing method for a cylinder mixer, which is applied to the roller ring repairing device for the cylinder mixer; further comprising the steps of:

s1: welding the cross-shaped supports 13 in the two ends of the cylinder body 8, cutting off the two ends of the cylinder body 8 along the axial thickness of 40mm, and welding positioning blocks at the two ends before cutting off to ensure that the cylinder body can be kept in place during recovery; the temporarily cut cylinder 8 is properly fixed, so that the displacement cannot be caused in the repairing process, and the repairing precision of the roller ring 9 is ensured; the radial supporting devices of the aligning device 3 are arranged at two ends of the inner part of the cylinder body 8, and the adjusting screw rod is adjusted to enable the radial supporting devices to support the cylinder body 8, so that the primary alignment is carried out on the processing surface of the roller ring 9 on the cylinder body 8;

s2: a centering device 4 is arranged on the cylinder 8, a laser striping machine 43 is used for carrying out accurate alignment through positioning through holes of the two trunnions 2, and the concentricity of the two trunnions 2 is controlled within the range of +/-1 mm through the guidance of a laser line and the matching of a high-accuracy level gauge; leading out the central lines of the two trunnions 2 to the outer side of the cylinder 8 in a laser line mode, and measuring the surface runout of a roller ring 9 and a gear ring 14 on the cylinder 8; determining the central line of the cylinder 8 by using the intermediate value of the runout of the roller ring 9 and the numerical value of +/-1 mm of the runout of the gear ring 14;

s3: after the central line of the cylinder body 8 is determined, a reinforcing plate is welded at the end port of the cylinder body 8, and the supports 13 in the shape of a Chinese character 'mi' at the two ends of the cylinder body 8 are firmly welded with the supporting plate 24, so that the supports 13 in the shape of Chinese character 'mi' and the trunnion 2 can be rotatably connected; re-measuring the size of the central line of the cylinder 8 after welding is completed to confirm whether the size is qualified or not, and carrying out the next step after the size is qualified; establishing support frames 1 on two sides of the trunnion 2, leveling the cylinder 8 by using a jack matched tool, mounting bearing blocks 21 at two ends of the trunnion 2 on the support frames 1, and keeping the levelness error to be +/-1 mm so as to determine the final central line of the cylinder 8;

s4: after the cylinder 8 is leveled, a bed body 10 is arranged on the side surface of the roller ring 9, and a roller ring turning device 6 and a roller ring grinding device 7 are arranged on the bed body 10;

s5: starting the transmission device 5 to drive the cylinder 8 to rotate, rechecking the surface runout quantity of the roller rings 9 on the two sides by using a dial indicator to determine the minimum cutting depth, and processing the roller rings 9 on the two sides on the basis of the condition that the roller rings 9 on the two sides have the same diameter and no black skin defect; the roll collar turning device 6 feeds to turn the outer roll collar 9 of the rotating cylinder 8, and after the roll collar 9 is turned, the roll collar grinding device 7 is switched to grind the turned roll collar 9; after the cutting and grinding are finished, the cut part of the cylinder 8 with the thickness of 40mm is welded back through a positioning block so as to keep the cylinder 8 as it is.

Preferably, in combination with the above solution, as shown in fig. 6, in this embodiment, the sliding rail levelness on the bed 10 in step S4 is adjusted to ± 0.5 mm; the concentricity of the slide rail takes a laser line led out from the central line of the cylinder 8 as a reference; the parallelism of the sliding rails is +/-0.5 mm, so that the precision in the turning and grinding processes is ensured, the repairing precision of the roller ring 9 is improved, the vibration problem caused by low repairing precision of the roller ring 9 in the cylinder body 8 is eliminated, and the use stability of the cylinder mixer is improved.

Preferably, in combination with the above scheme, as shown in fig. 6, in the present embodiment, the processing requirement of the roller ring 9 of step S5 is that the surface roughness of the roller ring 9 is not more than 6.3 μm; the radial runout of the roller ring 9 is not more than 1 mm; the radial runout of the large gear ring 14 of the roller ring 9 is smaller than 2mm, so that the repair precision of the roller ring 9 is ensured, the problem of vibration during operation of the cylinder body 8 is avoided, the reliability of the cylinder mixer is greatly improved, and the service life of the cylinder mixer is prolonged.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Those skilled in the art can make numerous possible variations and modifications to the described embodiments, or modify equivalent embodiments, without departing from the scope of the invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technology of the present invention are within the protection scope of the present invention, unless the content of the technical solution of the present invention is departed from.

Claims

1. A roller ring repairing device of a cylinder mixer is characterized by comprising a support frame (1), trunnions (2), a centering device (3), a centering device (4), a transmission device (5), a roller ring turning device (6) and a roller ring grinding device (7); one end of the trunnion (2) is rotatably arranged on the support frame (1), the other end of the trunnion (2) is rotatably connected with a support frame (13) shaped like a Chinese character 'mi', and the support frame (13) shaped like a Chinese character 'mi' is fixedly connected in the barrel body (8); the aligning device (3) is arranged on the trunnion (2), and the aligning device (3) is arranged at two ends in the barrel (8); the centering device (4) is arranged on the cylinder body (8) to determine the central line of the cylinder body (8); the roll collar turning device (6) and the roll collar grinding device (7) are arranged on one side of the cylinder (8); the transmission device (5) is in transmission connection with the cylinder body (8) to drive the cylinder body (8) to rotate around the support frame (1), so that the roll ring turning device (6) and the roll ring grinding device (7) turn and finish grind the roll ring (9).

2. The roller ring repairing device of the drum mixer according to claim 1, wherein the trunnion (2) comprises a bearing housing (21), a self-aligning roller bearing (23), a rotating shaft (22), and a supporting disk (24); bearing frame (21) install in on support frame (1), self-aligning roller bearing (23) are located in bearing frame (21), axis of rotation (22) with self-aligning roller bearing (23) interference fit, supporting disk (24) are rotatable to be located on axis of rotation (22), rice word support (13) connect in on supporting disk (24).

3. The roller ring repairing device of the cylinder mixer according to claim 2, wherein the aligning device (3) comprises a radial support device (31) and an adjusting screw (32); radial strutting arrangement (31) install in on axis of rotation (22), the one end of adjustment lead screw (32) is located on the radial strutting arrangement (31), the other end butt of adjustment lead screw (32) in the tip of barrel (8), in order to right barrel (8) central line carries out preliminary adjustment alignment.

4. A roller ring repairing device of a drum mixer according to claim 1, wherein said centering device (4) comprises a centering stub shaft (41), an equidistant scale (42), a laser striper (43) and a wire scale (44); centering minor axis (41) install in on trunnion (2), equidistance scale (42) are located on centering minor axis (41), laser graticule appearance (43) with steel wire scale (44) are located on the equidistance scale (42), in order to detect barrel (8) and roller circle (9) and ring gear (14) tip runout volume, thereby confirm barrel (8) central line.

5. The roller ring repairing device of the drum mixer according to claim 1, wherein said transmission means (5) comprises a first motor (51), a speed reducer (52), a transmission drum (53) and a transmission belt (54); the output end of the first motor (51) is in transmission connection with the input end of the speed reducer (52), the output end of the speed reducer (52) is connected with the transmission roller (53), and the transmission belt (54) is sleeved on the transmission roller (53) and the barrel body (8); still include belt tightener, belt tightener install in on the transmission belt.

6. The roller ring repairing device of the cylinder mixer as claimed in claim 1, further comprising a bed body (10), wherein the bed body (10) is arranged at one side of the cylinder body (8) and is flush with the horizontal central line of the cylinder body (8); the roll collar turning device (6) comprises a turning tool walking device, a sliding rail and a transmission lead screw; the lathe tool walking device is characterized in that the slide rail is arranged on the lathe body (10), the lathe tool walking device and the transmission lead screw are arranged on the slide rail, the transmission lead screw is connected with the lathe tool walking device, a sliding table (61) is arranged on the lathe tool walking device, and a lathe tool (62) is arranged on the sliding table (61); the roller ring grinding device (7) comprises a second motor, a gearbox and a grinding wheel, wherein the second motor, the gearbox and the grinding wheel are installed on the sliding table (61), the output end of the second motor is in transmission connection with the input end of the gearbox, and the grinding wheel is connected with the output end of the gearbox.

7. The roller ring repairing device of the cylinder mixer according to claim 1, wherein the supporting frame (1) comprises a column (11), a beam (12) and a bearing seat gasket; the upright posts (11) and the cross beams (12) are multiple, the cross beams (12) are connected to the upright posts (11), and the bearing seat gaskets are arranged on the cross beams (12).

8. A method for repairing a roll ring of a drum mixer, which is applied to the apparatus for repairing a roll ring of a drum mixer according to claim 1; further comprising the steps of:

s1: welding a rice-shaped support (13) in the two ends of the cylinder body (8), cutting off the two ends of the cylinder body (8) along the axial thickness of 40mm, and welding positioning blocks at the two ends before cutting off; the radial supporting devices of the aligning device (3) are arranged at two ends inside the cylinder body (8), and the adjusting screw rod is adjusted to enable the radial supporting devices to support the cylinder body (8), so that the primary alignment is carried out on the processing surface of the roller ring (9) on the cylinder body (8);

s2: a centering device (4) is arranged on the cylinder body (8), and a laser line marker (43) is used for carrying out accurate alignment through positioning through holes on the two trunnions (2); leading out the central lines of the two trunnions (2) to the outer side of the cylinder body (8) in a laser line mode, and measuring the surface runout of a roller ring (9) and a gear ring (14) on the cylinder body (8); determining the central line of the cylinder (8) by the intermediate value of the runout of the roller ring (9) and the numerical value of the runout of the gear ring (14) plus or minus 1 mm;

s3: after the central line is determined, the support in the shape of a Chinese character 'mi' (13) is welded and fixed on a support plate (24) of the trunnion (2), and the size of the central line of the cylinder body (8) is retested after the welding is finished; establishing support frames (1) on two sides of the trunnion (2), leveling the barrel (8) by using a jack matched tool, and installing bearing blocks (21) at two ends of the trunnion (2) on the support frames (1);

s4: after the barrel (8) is leveled, a bed body (10) is arranged on the side surface of the roller ring (9), and a turning device (6) for mounting the roller ring and a grinding device (7) for mounting the roller ring are mounted on the bed body (10);

s5: starting the transmission device (5) to drive the cylinder (8) to rotate, and rechecking the surface runout of the roller rings (9) at two sides by using a dial indicator to determine the minimum cutting depth; the roller ring turning device (6) feeds to turn the outer roller ring (9) of the rotating cylinder (8), and after the roller ring (9) is turned, the roller ring grinding device (7) is switched to grind the turned roller ring (9).

9. The method for repairing a roller ring of a drum mixer according to claim 8, wherein the levelness of the slide rail on the bed (10) of the step S4 is adjusted to ± 0.5 mm; the concentricity of the slide rail takes a laser line led out from the central line of the cylinder (8) as a reference; the parallelism of the slide rails is +/-0.5 mm.

10. The roller ring repairing method of drum mixer according to claim 8, wherein said roller ring (9) of step S5 is processed to have a surface roughness of not more than 6.3 μm; the radial runout of the roller ring (9) is not more than 1 mm; the radial runout of a large gear ring (14) of the roller ring (9) is less than 2 mm.