CN111375980B - Intermediate junction repairing method - Google Patents
Intermediate junction repairing method Download PDFInfo
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- CN111375980B CN111375980B CN201811626796.6A CN201811626796A CN111375980B CN 111375980 B CN111375980 B CN 111375980B CN 201811626796 A CN201811626796 A CN 201811626796A CN 111375980 B CN111375980 B CN 111375980B
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- shaped sinking
- boring
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- sleeve
- sinking sleeve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The invention relates to a repair method of an intermediate junction, which comprises the following steps: 1) cleaning a rack; 2) designing a T-shaped sinking sleeve; 3) designing an infrared triangular support center point finding device; 4) designing an upper clamping plate and a lower clamping plate to be symmetrically fixed, heating a symmetrical welding method during welding, 5) designing a fixed support, and 6) carrying out wear-resistant treatment after boring is finished. By using the method for repairing the intermediate junction of the sinking sleeve, the front and rear frames of the equipment do not need to be dismantled, and a large lathe is not needed for boring holes, so that the labor capacity of maintainers is reduced, and the maintenance efficiency of the equipment is improved; by using the sinking sleeve intermediate junction repairing method, the concentricity of the intermediate junction multi-layer intermediate holes of the equipment is ensured, and the abrasion of the intermediate junction during the operation of the equipment is reduced.
Description
Technical Field
The invention relates to a repairing method, in particular to a repairing method for an intermediate junction, and belongs to the technical field of mechanical maintenance of underground mine mining equipment.
Background
The current underground trackless equipment comprises 28 scrapers, 13 trolleys and 6 other auxiliary equipment. All trackless equipment adopts a front and rear frame hinged structure. In recent years, along with the increase of the service life of equipment, the abrasion of a middle hinge point is larger and larger, the abrasion and deformation of a reference hole of a front frame and a rear frame of the equipment are serious, the gap of the middle hinge point is larger and larger, the connecting hole of the middle hinge point of the frame is eccentric, and the safe operation of the equipment is influenced.
The existing repairing technology is that the front and the back of the equipment are separated, the front and the back racks are integrally placed on a large lathe for boring and repairing, and the joints of the racks are thinner and thinner due to boring and repairing of each equipment according to the abrasion condition until the equipment racks are scrapped, so that a new repairing method is needed.
Disclosure of Invention
The invention provides a method for repairing an intermediate cross joint point aiming at the problems in the prior art, and the technical scheme solves the problem of repairing the intermediate cross joint point; the problem of bore hole restoration frame junction is thinner and thinner is solved, the problem of frame intermediate junction connecting hole decentraction is solved.
In order to achieve the above object, the technical solution of the present invention is as follows, a method for repairing an intermediate junction, the method comprising the steps of:
1) cleaning a rack;
2) designing a T-shaped sinking sleeve;
3) designing an infrared triangular support center point finding device;
4) an upper clamping plate and a lower clamping plate are symmetrically fixed, and a heating symmetric welding method is adopted during welding, so that the problem of deformation in the process of sleeve sinking welding is solved;
5) the fixed support is designed, the original horizontal automatic boring and welding machine is vertically erected by depending on the fixed support, and the centering boring is fixed, so that 4 planes can be automatically bored at one time, and the problems that the upper pitch and the lower pitch of an intermediate joint are not centered and the size error of the pitch is large are solved.
6) And (5) after boring, performing wear-resistant treatment.
As an improvement of the invention, the rack cleaning: the front and rear frames of the equipment are classified, washed by clear water and further cleaned by a cleaning agent, and oil stains at the middle joint are eliminated.
As an improvement of the invention, the step 2) designs a T-shaped sinking sleeve; manufacturing a T-shaped sinking sleeve: a T-shaped sinking sleeve with the same size is prepared, the intermediate junction point of the front rack and the rear rack needs to be repaired separately, and the front repairing method and the rear repairing method are the same. For example, when the middle cross point of the rack is repaired before the repair, the T-shaped sinking sleeves are sequentially placed into the middle cross point connecting holes of the equipment rack;
as an improvement of the invention, in the step 3), a central point is found, and an infrared triangular support device is taken out, wherein the infrared triangular support device consists of a triangular infrared support, an infrared device, a motor, a battery, a module and a display operation screen; when in use: the triangular support is a lower three-gear mechanism, one supporting leg is pulled, the other two supporting legs can be opened simultaneously, one leg is closed, the other two legs can be closed simultaneously, the accuracy of the central distance is ensured, a concentric 12V motor is designed and installed in the middle of the three supporting legs, the automatic program control can be realized, the infrared device is designed, central light rays and the light rays of the three supporting legs are emitted simultaneously, and when the light rays are emitted, numbers can be displayed on a display screen; when the device is used, the required size is input into the display operation screen, the confirmation key is pressed, the supports are automatically opened, the infrared device automatically emits light, the display operation screen automatically displays the distances from the three supports to the center line, and the center point of the circular hole can be found only by moving;
after finding the center, infrared rays pass through the circle with the same diameter in the quick centering, the T-shaped sinking sleeve with the same diameter is placed below the circle, the infrared rays are enabled to be in the center of the circle with the same diameter in the quick centering, the circle with the same diameter in the quick centering is taken off, the T-shaped sinking sleeve is symmetrically fixed in a spot welding mode, and the middle hole of the middle cross joint of the next layer is installed in the same mode.
As an improvement of the invention, in the step 4), a "T" type sinking sleeve is welded: the upper pressing plate and the lower pressing plate are respectively placed on a fixed T-shaped sinking sleeve and fixedly fastened by penetrating through fixing bolts, the diameter of the upper pressing plate and the diameter of the lower pressing plate are smaller than that of the T-shaped sinking sleeve, the T-shaped sinking sleeve is symmetrically and uniformly welded after being fastened, the heating temperature is 80 ℃, the T-shaped sinking sleeve is slightly red, the distance of each welding of the symmetric welding is about 5cm, and the strength of the T-shaped sinking sleeve workpiece is guaranteed not to deform.
As an improvement of the invention, the step 5) designs a fixed support, and boring and finish machining a T-shaped sinking sleeve: designing a fixed clamp, wherein the clamp consists of a bearing, a fixed disc, supporting legs and a fixed threaded hole, the supporting legs consist of three gears which are meshed with each other, and one gear moves and the other gear moves along with the other gear, so that the stability of the clamp is ensured; the bearing fixes the boring cutter holder, so that the boring cutter holder can rotate freely; the fixing threaded holes play a fixing role and ensure that the boring tool does not shake during boring. During boring, fixing clamps are placed at two ends of an automatic boring machine, an infrared triangular support device is used for finding a centering point, a bolt is used for fixing a threaded hole to fasten the clamps, the automatic boring machine penetrates through a clamp bearing, a fixing disc is fastened with a boring machine bolt, a machine is started to bore according to the size, and step 6) is performed with wear-resistant treatment: after boring, double-medium quenching is adopted, the T-shaped sinking sleeve is heated at about 800 ℃, water is used for cooling the T-shaped sinking sleeve, oil is adopted for cooling after the temperature is reduced to 300 ℃, air is adopted for self-care cooling after the temperature is reduced to 50 ℃, and double-medium quenching is realized. The quenching process comprises water quenching and oil quenching, so that the internal stress of martensite transformation can be effectively reduced, the tendency of deformation and cracking of the workpiece is reduced, and the quenching of the workpiece with uneven section like a T-shaped sinking sleeve is facilitated.
Compared with the prior art, the method has the advantages that 1) the method for repairing the middle cross joint of the sinking sleeve is used, the front and rear frames of the equipment do not need to be dismantled, a large lathe is not needed to bore holes, the labor capacity of maintainers is reduced, and the overhauling efficiency of the equipment is improved; 2) by using the sinking sleeve intermediate junction repairing method, the concentricity of the intermediate junctions of the equipment is ensured by the multi-layer intermediate holes, and the abrasion of the intermediate junctions during the operation of the equipment is reduced; 3) the method for repairing the intermediate cross joint of the sinking sleeve is adopted, a double-medium quenching process is added, the intermediate cross joint is improved, and the abrasion is reduced; 4) after the sinking sleeve intermediate junction point repairing method is used, the equipment can be maintained next time only by removing and replacing the T-shaped sinking sleeve, and the phenomenon that the strength of the equipment intermediate point is reduced by boring for many times is avoided.
Drawings
FIG. 1 is a schematic view of a front and rear rack of an apparatus;
FIG. 2 is a schematic view of the repair installation of the intermediate junction;
FIG. 3 is a schematic view of a T-shaped sinking sleeve;
FIG. 4 is a schematic view of a fixed welding apparatus;
FIG. 5 is a schematic view of an infrared triangular support device;
FIG. 6:is perpendicular toA schematic view of an automatic boring fixture;
FIG. 7: a vertical automatic boring schematic diagram;
in the figure: 1. a rear frame; 2. a front frame; 3. an intermediate junction; 4. The middle joint of the rear frame is connected with the joint hole; 5. the middle joint of the front frame is connected with the joint hole; 6. a T-shaped sinking sleeve; 7. an upper pressing plate and a lower pressing plate; 8. fixing bolts 9, a vertical infrared emitter and a battery box; 10. displaying an operation screen; 11. a motor; 12. rotating the teeth; 13. a triangular infrared leg; 14. measuring the distance and centering infrared rays; 15. quickly centering circles with the same diameter; 16. a bearing; 17. comprises a fixed disc, 18 and a supporting leg; 19. fixing threaded hole
20. An automatic boring machine; 21. a boring machine support; 22. and (4) boring a tool rest.
The specific implementation mode is as follows:
for the purpose of enhancing an understanding of the present invention, the present embodiment will be described in detail below with reference to the accompanying drawings.
Example 1: referring to fig. 1-7, an intermediate junction repair method includes the steps of:
1) cleaning a rack; the frame is cleaned: the front and rear frames of the equipment are classified, washed by clear water and further cleaned by a cleaning agent, and oil stains at the middle joint are eliminated.
2) Designing a T-shaped sinking sleeve; the step 2) designs a T-shaped sinking sleeve; manufacturing a T-shaped sinking sleeve: as shown in figure 3, a T-shaped sinking sleeve with the same size is prepared, and the intermediate junction of the front and rear racks needs to be repaired separately, and the front and rear repairing methods are the same. For example, when the middle cross point of the rack is repaired before the repair, the T-shaped sinking sleeves are sequentially placed into the middle cross point connecting holes of the equipment rack;
3) designing an infrared triangular support center point finding device; the step 3) is to find a central point: as shown in fig. 5, the infrared triangular support device is taken out, and the device is composed of a triangular infrared support, an infrared device, a motor, a battery, a module and a display operation screen; when in use: the triangular support is a lower three-gear mechanism, one supporting leg is pulled, the other two supporting legs can be opened simultaneously, one leg is closed, the other two legs can be closed simultaneously, the accuracy of the central distance is ensured, a concentric 12V motor is designed and installed in the middle of the three supporting legs, the automatic program control can be realized, the infrared device is designed, central light rays and the light rays of the three supporting legs are emitted simultaneously, and when the light rays are emitted, numbers can be displayed on a display screen; when the device is used, the required size is input into the display operation screen, the confirmation key is pressed, the supports are automatically opened, the infrared device automatically emits light, the display operation screen automatically displays the distances from the three supports to the center line, and the center point of the circular hole can be found only by moving;
after finding the center, infrared rays pass through the circle with the same diameter in the quick centering, the T-shaped sinking sleeve with the same diameter is placed below the circle, the infrared rays are enabled to be in the center of the circle with the same diameter in the quick centering, the circle with the same diameter in the quick centering is taken off, the T-shaped sinking sleeve is symmetrically fixed in a spot welding mode, and the middle hole of the middle cross joint of the next layer is installed in the same mode.
4) An upper clamping plate and a lower clamping plate are symmetrically fixed, and a heating symmetric welding method is adopted during welding, so that the problem of deformation in the process of sleeve sinking welding is solved; in the step 4), welding a T-shaped sinking sleeve: as shown in figure 4, the upper pressing plate and the lower pressing plate are respectively placed on the fixed T-shaped sinking sleeve and fixedly fastened through the fixing bolts in a penetrating mode, the diameter of the upper pressing plate and the diameter of the lower pressing plate are smaller than that of the T-shaped sinking sleeve, the T-shaped sinking sleeve is heated after being fastened and symmetrically and uniformly welded through the heating T-shaped sinking sleeve, the heating temperature is 80 ℃, the T-shaped sinking sleeve is slightly red, the distance of each welding of the symmetric welding is about 5cm, and therefore the strength of the T-shaped sinking sleeve workpiece is guaranteed not to deform.
) The fixed support is designed, the original horizontal automatic boring and welding machine is vertically erected by depending on the fixed support, and the centering boring is fixed, so that 4 planes can be automatically bored at one time, and the problems that the upper pitch and the lower pitch of an intermediate joint are not centered and the size error of the pitch is large are solved. Step 5) designing a fixed support, and boring to finish machining a T-shaped sinking sleeve: at present, all horizontal automatic boring machines are on the market, and are horizontally installed according to the requirements of manufacturers, fixed centering boring is carried out by relying on a platform, but cross boring holes in large-scale equipment cannot meet the requirements of horizontal boring, so that a set of fixing clamp is designed, as shown in fig. 6: designing a fixed clamp, wherein the clamp consists of a bearing, a fixed disc, a supporting leg and a fixed threaded hole, the supporting leg is designed to consist of three gears which are meshed with each other, and one gear moves and the other two gears move along to ensure the stability of the clamp; the bearing fixes the boring cutter holder, so that the boring cutter holder can rotate freely; the fixing threaded holes play a fixing role and ensure that the boring tool does not shake during boring. During boring, as shown in fig. 7, the fixing clamps are placed at two ends of the automatic boring machine, the infrared triangular support device is used for finding a centering point, the bolt is used for fixing the threaded hole to fasten the clamp, the automatic boring machine penetrates through the clamp bearing, the fixing disc is fastened with the boring machine through the bolt, and the machine is started to bore according to the size.
6) And (5) after boring, performing wear-resistant treatment. Step 6) wear-resistant treatment: after boring, double-medium quenching is adopted, the T-shaped sinking sleeve is heated at about 800 ℃, water is used for cooling the T-shaped sinking sleeve, oil is adopted for cooling after the temperature is reduced to 300 ℃, air is adopted for self-care cooling after the temperature is reduced to 50 ℃, and double-medium quenching is realized. The quenching process comprises water quenching and oil quenching, so that the internal stress of martensite transformation can be effectively reduced, the tendency of deformation and cracking of the workpiece is reduced, and the quenching of the workpiece with uneven section like a T-shaped sinking sleeve is facilitated.
It should be noted that the above-mentioned embodiments are not intended to limit the scope of the present invention, and all equivalent modifications and substitutions based on the above-mentioned technical solutions are within the scope of the present invention as defined in the claims.
Claims (3)
1. An intermediate junction repair method, comprising the steps of:
1) cleaning a rack;
2) designing a T-shaped sinking sleeve;
3) designing an infrared triangular support center point finding device;
4) the upper and lower clamping plates are symmetrically fixed, and the symmetrical welding method is adopted during the welding,
5) the design of the fixed support is that the fixed support,
6) after boring, performing wear-resistant treatment;
the frame is cleaned: classifying the front and rear racks of the equipment, washing with clear water, and further cleaning with a cleaning agent to eliminate oil stains at the middle junction;
the step 2) designs a T-shaped sinking sleeve; manufacturing a T-shaped sinking sleeve: preparing a T-shaped sinking sleeve with the same size, wherein the intermediate junction point between the front rack and the rear rack needs to be repaired separately, and the front and rear repairing methods are the same;
the step 3) finds a central point: the infrared triangular support device is taken out and consists of a triangular infrared support, an infrared device, a motor, a battery, a module and a display operation screen; when in use: the triangular support is a lower three-gear mechanism, one supporting leg is pulled, the other two supporting legs can be opened simultaneously, a concentric 12V motor is designed and installed in the middle of the three supporting legs, automatic program control can be achieved, the infrared device is designed in such a way that central light rays and three supporting leg light rays are emitted simultaneously, and when the light rays are emitted, numbers can be displayed on a display screen; when the device is used, the required size is input into the display operation screen, the confirmation key is pressed, the supports are automatically opened, the infrared device automatically emits light, the display operation screen automatically displays the distances from the three supports to the center line, and the center point of the circular hole can be found only by moving; after finding the center, passing infrared rays through the circle with the same diameter in the quick centering, placing the T-shaped sinking sleeve with the same diameter below the circle, ensuring that the infrared rays are lighted in the center, taking off the circle with the same diameter in the quick centering, symmetrically spot-welding and fixing the T-shaped sinking sleeve, and installing the middle hole of the middle cross joint of the next layer by adopting the same method;
in the step 4), welding a T-shaped sinking sleeve: the upper pressing plate and the lower pressing plate are respectively placed on a fixed T-shaped sinking sleeve and fixedly fastened through the fixing bolts, the diameter of the upper pressing plate and the diameter of the lower pressing plate are smaller than that of the T-shaped sinking sleeve, the T-shaped sinking sleeves are symmetrically and uniformly welded after being fastened, the heating temperature is 80 ℃, the T-shaped sinking sleeves are slightly red, and the distance between every two welding operations of symmetrical welding is 5 cm.
2. The method for repairing an intermediate junction according to claim 1, wherein said step 5) comprises designing a fixed support, boring a finish-machining "T" type sinker: designing a fixed clamp, wherein the clamp consists of a bearing, a fixed disc, a supporting leg and a fixed threaded hole, the supporting leg is designed to consist of three gears which are meshed with each other, and one gear moves and the other two gears move along to ensure the stability of the clamp; the bearing fixes the boring cutter frame, the fixing threaded hole plays a fixing role, during boring, the fixing clamps are placed at two ends of the automatic boring machine, the infrared triangular support device is used for finding a centering point, the bolt is used for fixing the threaded hole to fasten the clamps, the automatic boring machine penetrates through the clamp bearing, the fixing disc is fastened with the boring machine through the bolt, and the machine is started to bore according to the size.
3. The method of repairing an intermediate junction according to claim 2, wherein said step 6) of abrasion-resistant treatment: after boring, double-medium quenching is adopted, the T-shaped sinking sleeve is heated at 800 ℃, water is used for cooling the T-shaped sinking sleeve, oil is adopted for cooling after the temperature is reduced to 300 ℃, air is adopted for self-care cooling after the temperature is reduced to 50 ℃, and double-medium quenching is realized.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811626796.6A CN111375980B (en) | 2018-12-28 | 2018-12-28 | Intermediate junction repairing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811626796.6A CN111375980B (en) | 2018-12-28 | 2018-12-28 | Intermediate junction repairing method |
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| CN111375980A CN111375980A (en) | 2020-07-07 |
| CN111375980B true CN111375980B (en) | 2022-05-13 |
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2018
- 2018-12-28 CN CN201811626796.6A patent/CN111375980B/en active Active
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|---|---|---|---|---|
| US5267384A (en) * | 1992-05-05 | 1993-12-07 | Teeslink John W | Method for providing a toolholder body guide for punch presses |
| CN102699619A (en) * | 2012-06-29 | 2012-10-03 | 南车戚墅堰机车有限公司 | Method for repairing cam axle hole of diesel engine |
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