CN111115446A - Wheel replacement and adjustment method for large crane - Google Patents
Wheel replacement and adjustment method for large crane Download PDFInfo
- Publication number
- CN111115446A CN111115446A CN201911310028.4A CN201911310028A CN111115446A CN 111115446 A CN111115446 A CN 111115446A CN 201911310028 A CN201911310028 A CN 201911310028A CN 111115446 A CN111115446 A CN 111115446A
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- China
- Prior art keywords
- wheels
- balance
- groups
- wheel
- trolley
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/08—Runners; Runner bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/16—Travelling gear incorporated in or fitted to trolleys or cranes with means for maintaining alignment between wheels and track
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/01—General aspects of mobile cranes, overhead travelling cranes, gantry cranes, loading bridges, cranes for building ships on slipways, cranes for foundries or cranes for public works
- B66C2700/012—Trolleys or runways
- B66C2700/018—Construction details related to the trolley movement
Abstract
A wheel replacement and adjustment method for a large crane belongs to the technical field of crane equipment maintenance methods and is used for replacing and adjusting crane wheels consisting of a plurality of groups of wheel trolleys. The technical scheme is as follows: firstly, connecting bolts of a plurality of groups of balance beams are simultaneously disassembled, the balance beams are jacked up by an oil jack, and the balance beams are transported out one by one on a small transportation tank; then, the manufactured balance beam and the wheel set are assembled together, the horizontal deviation of two groups of wheels on each group of balance trolleys is adjusted to be less than 0.1%, then the fixing bolts of the wheels are screwed and fixed, the horizontal deviation of two groups of wheels on a single balance trolley is adjusted to be out of tolerance, the horizontal deviation difference after the large trolley is assembled on the single-side balance trolley is adjusted, and the fixing bolts of each balance trolley and the end beam are screwed. The invention can quickly replace the wheels, improves the mounting accuracy of the wheels, does not need to readjust the horizontal combination form of the wheels, can ensure that the wheels reach the original mounting size, and prolongs the service life of the wheels.
Description
Technical Field
The invention relates to a method for adjusting wheels of a crane locomotive consisting of a plurality of groups of wheel trolleys, belonging to the technical field of crane equipment maintenance methods.
Background
The large crane is mostly composed of a plurality of groups of trolleys, and the wheels form a walking mechanism, so that the mounting position of each wheel is difficult to be ensured within a specified range due to the large number of the wheels, and synchronous operation is ensured, so that the phenomenon that the wheels bite the rail frequently occurs, and the service lives of the wheels and the steel rail are seriously influenced. At present, machining errors are generated when an angle type bearing box of a wheel needs to be adjusted when the wheel is replaced and adjusted, in order to prevent the wheel from generating a rail gnawing phenomenon, the horizontal combination form of the wheel needs to be adjusted again when the wheel is replaced every time, the work is a delicate and complex process with long time use, the problem that the rail gnawing phenomenon of the wheel is serious easily due to poor adjustment is solved, the wheel needs to be replaced every 15-20 days, the cost is increased, the production is influenced, in order to solve the problem, the existing large travelling wheel installation form is changed into a circular bearing box from the angle type bearing box fixed on a bent plate of a balance beam, and the circular bearing box is fixed on a semicircular web plate of the 45-degree inclined throwing balance beam, so that the wheel installation accuracy is improved, and the simple and rapid wheel replacement is realized, and the problem faced by technical personnel is solved.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for replacing and adjusting wheels of a large crane, which can quickly replace the wheels without readjusting the horizontal combination form of the wheels, can ensure that the wheels reach the original installation size, and prolongs the service life of the wheels.
The technical scheme for solving the technical problems is as follows:
a method for replacing and adjusting wheels of a large crane is carried out by the following steps:
disassembling the balance trolley:
a. detecting horizontal combination forms and horizontal deviation values of original groups of wheels on one side, and providing original basis for replacing balance beams on the other side;
b. connecting bolts of a plurality of groups of balance beams are simultaneously disassembled, connecting bolts of two driving wheel couplings are simultaneously disassembled, each group of balance beams has 8 groups of fixing bolts, only 6 groups are disassembled after all balance beams are loosened, and 1 group is reserved inside and outside;
c. jacking balance beams by using an oil jack, stopping jacking when the bottom surfaces of all wheels are 80mm away from the rail surface of a cart track, inserting a tool made in advance into the bottom of each balance beam from the side surface, removing 2 groups of bolts reserved inside and outside, enabling the balance beams to land on a small transportation tank with the carrying capacity of 8 tons, carrying out the small transportation tank from the side surface one by one, hoisting and placing the small transportation tank on a walking platform on one side by using a chain block with 5 tons of chain blocks hung at the upper part of the small transportation tank in advance, and preventing the bottom solid block from toppling;
d. releasing the pressure of an oil jack to stop when the distance between the bottom surfaces of the wheels of the groups and the upper plane of the cart track is 5mm, and manually loosening the fixing bolts of the trolleys of the 4 groups to ensure that the bottom surfaces of the wheels are in contact with the cart track, and then adjusting the straightness of the wheels of the groups;
installing and adjusting a balance trolley:
e. assembling the manufactured balance beam and the wheel set together on the ground, adjusting the horizontal deviation of two groups of wheels on each group of balance trolleys to be less than 0.1%, and then screwing and fixing the fixing bolts of the wheels;
f. adjusting the level deviation out-of-tolerance of two groups of wheels of a single balance trolley, and adjusting the installation angle of a fixing bolt of a rotary bearing box;
g. adjusting the horizontal deviation of the assembled large-vehicle single-side balance trolley, and replacing the single-side balance trolley at one time;
h. preassembling a new balance trolley on an end beam, longitudinally fixing a steel wire with the diameter of 0.5mm at the position, which is about 150mm away from the center of a cart track, of the outer side of a wheel, taking the steel wire as a reference, and adjusting the horizontal deflection from 2 groups of wheels on each group of trolleys to the steel wire to be less than or equal to 1mm, wherein the internal and external displacement of 4 groups of trolleys along the cart track is less than or equal to 2 mm;
i. and (3) screwing the fixing bolts of the balance trolleys and the end beams, checking whether the horizontal deflection of all the wheels after being screwed is changed or not newly, welding and fixing the positioning plates of the fixing bolts by using electric welding if the horizontal deflection of all the wheels meets the requirement, connecting and fixing the couplings of the driving wheels by other constructors, and finishing the adjustment.
In the wheel replacement and adjustment method for the large crane, the dismounting and mounting methods of the balance beam on the other side are basically the same, and when the wheel on the other side is adjusted horizontally, the track gauge and the horizontal deviation of the wheel are adjusted by using the track center as a reference pull wire on two sides besides the adjustment according to the method steps on the previous side.
According to the wheel replacement and adjustment method for the large crane, when the wheels of the passive balance trolley are replaced, the oil pressure jack is used for jacking the balance beam for about 90-110 mm, the iron pad height is 100mm at the center of the lower part of the active balance trolley and the passive balance trolley, the trolley needing wheel replacement is padded into an off-angle of 3.5 degrees, and the oil pressure jack is removed, so that the wheels can be replaced.
According to the wheel replacement and adjustment method for the large crane, the bearing box is not replaced as much as possible when the wheel or the bearing is replaced each time, the original bearing box is only required to be removed when the wheel or the bearing is replaced, the positioning mark bolt is not removed, the original bearing box is sleeved on the new bearing, and the wheel or the bearing is installed and fixed on the balance trolley according to the original fixing mode.
The invention has the beneficial effects that:
the invention can quickly replace the wheels, improves the mounting accuracy of the wheels, does not need to readjust the horizontal combination form of the wheels, can ensure that the wheels reach the original mounting size, prolongs the service life of the wheels, and can reach more than 6 months.
The invention is the first creation of the maintenance work of a large crane, solves the problem of rail gnawing caused by the fact that the wheels of the crane consisting of a plurality of wheel trolleys of a metallurgical enterprise are not normal and asynchronous, avoids long-time shutdown accidents caused by wheel faults, and ensures the normal operation of production.
Drawings
FIG. 1 is a schematic diagram of the operation of the present invention;
fig. 2 is a schematic view of a wheel mechanism of a multi-set wheel trolley.
The figures are labeled as follows: end beam 1, compensating beam 2, transport small tank 3, transport small tank track 4, cart track 5, initiative balance platform truck 6, passive balance platform truck 7, initiative wheel 8, passive wheel 9.
Detailed Description
The invention can quickly replace the wheels without readjusting the horizontal combination form of the wheels, can ensure that the wheels reach the original installation size, and prolongs the service life of the wheels.
The invention is carried out by the following steps:
first, the balance trolley is disassembled.
a. Detecting horizontal combination forms and horizontal deviation values of original groups of wheels on one side, and providing original basis for replacing balance beams on the other side;
b. connecting bolts of a plurality of groups of balance beams 2 are simultaneously disassembled, connecting bolts of two driving wheel 8 couplings are simultaneously disassembled, each group of balance beams has 8 groups of fixing bolts, only 6 groups are disassembled after all balance beams are loosened, and 1 group is reserved inside and outside;
c. jacking balance beams by using an oil jack, stopping jacking when the bottom surfaces of all wheels are 80mm away from the 5 rail surface of a cart track, inserting a tool made in advance into the bottom of each balance beam 2 from the side surface, removing 2 groups of bolts reserved inside and outside, enabling the balance beams 2 to descend onto a small transportation tank 3 with the carrying capacity of 8 tons, transporting the small transportation tank out one by one from the side surface, hoisting and placing the small transportation tank on a walking board on one side by using a chain block with 5 tons suspended at the upper part in advance, and preventing toppling by using a solid wood pad at the bottom;
d. releasing the pressure of an oil jack to stop when the distance between the bottom surfaces of a plurality of groups of wheels and the upper plane of the cart track 5 is 5mm, manually loosening the fixing bolts of the 4 groups of trolleys to ensure that the bottom surfaces of the wheels are in contact with the cart track 5, and then adjusting the straightness of the plurality of groups of wheels;
and secondly, installing and adjusting the balance trolley.
e. Assembling the manufactured balance beam 2 and wheels on the ground, adjusting the horizontal deviation of two groups of wheels on each group of balance trolleys to be less than 0.1%, and then screwing and fixing the fixing bolts of the wheels;
f. adjusting the level deviation out-of-tolerance of two groups of wheels of a single balance trolley, and adjusting the installation angle of a fixing bolt of a rotary bearing box;
g. adjusting the horizontal deviation of the assembled large-vehicle single-side balance trolley, and replacing the single-side balance trolley at one time;
h. preassembling a new balance trolley on the end beam 1, longitudinally fixing a steel wire with the diameter of 0.5mm at the position, which is about 150mm away from the center of the cart track 5, of the outer side of each wheel along the running direction of the cart, and adjusting the horizontal deflection from 2 groups of wheels on each group of trolleys to the steel wire to be less than or equal to 1mm by taking the steel wire as a reference, wherein the internal and external displacement of 4 groups of trolleys along the cart track 5 is less than or equal to 2 mm;
i. and (3) screwing the fixing bolts of the balance trolleys and the end beam 1, checking whether the horizontal deflection of all the wheels after being screwed is changed or not newly, welding and fixing the positioning plates of the fixing bolts by using electric welding if the horizontal deflection of all the wheels meets the requirement, connecting and fixing the couplings of the driving wheels 8 by other constructors, and finishing the adjustment.
And thirdly, disassembling and assembling the balance trolleys on the two sides.
The assembling and disassembling methods of the balance beam 2 on the other side are basically the same, and when the wheel on the other side is adjusted horizontally, besides the adjustment according to the method steps on the previous side, the track gauge and the horizontal deviation of the wheel are adjusted by using the track center as a reference pull line on both sides.
When the wheel is replaced and adjusted, the wheel track of the passive balance trolley 7 is reduced by 200mm, when the wheel of the passive balance trolley 7 is replaced, after the balance beam 2 is jacked up by about 90-110 mm by using an oil jack, the iron pad height is increased by 100mm at the center of the lower part of the active and passive balance trolleys 7, the trolley pad needing to replace the wheel is in an off-angle of 3.5 degrees, and the oil jack is removed, so that the wheel can be replaced.
In performing the above operations of replacing and adjusting the wheel, the bearing housing is not replaced as much as possible each time the wheel or the bearing is replaced, because the bearing housing is eccentric, each wheel set is adjusted when installed, and is marked with a set bolt. The eccentric bearing box is used for micro adjustment when the wheels bite the rail after the bridge is deformed, so that the defect that the bridge is deformed and the wheels bite the rail cannot be overcome is avoided.
When the wheel or the bearing is replaced, only the original bearing box needs to be removed, the positioning mark bolt does not need to be removed, the original bearing box is sleeved on a new bearing, and the bearing is installed and fixed on the balance trolley according to the original fixing mode.
Claims (4)
1. A method for replacing and adjusting wheels of a large crane is characterized by comprising the following steps: the method comprises the following steps:
disassembling the balance trolley:
a. detecting horizontal combination forms and horizontal deviation values of original groups of wheels on one side, and providing original basis for replacing balance beams on the other side;
b. connecting bolts of a plurality of groups of balance beams (2) are simultaneously disassembled, connecting bolts of two driving wheel (8) couplings are simultaneously disassembled, each group of balance beams (2) has 8 groups of fixing bolts, only 6 groups are disassembled after all balance beams are loosened, and 1 group is reserved inside and outside;
c. jacking balance beams (2) by using an oil jack, stopping jacking when the bottom surfaces of all wheels are 80mm away from a large rail surface after jacking, inserting a tool made in advance into the bottom of each balance beam (2) from the side surface, removing 2 groups of bolts reserved inside and outside, enabling the balance beams (2) to land on a small transportation tank (3) with the carrying capacity of 8 tons, transporting the small transportation tank out one by one from the side surface, hoisting and placing the small transportation tank on a walking board on one side by using a chain block with 5 tons of chain blocks hung on the upper part of the small transportation tank in advance, and preventing the bottom skid from toppling;
d. releasing the pressure of an oil jack, stopping when the distance between the bottom surfaces of the groups of wheels and the upper plane of the cart track (5) is 5mm, manually loosening the fixing bolts of the 4 groups of trolleys, and adjusting the straightness of the groups of wheels after the bottom surfaces of the wheels are contacted with the cart track (5);
installing and adjusting a balance trolley:
e. assembling the manufactured balance beam (2) and the wheel set on the ground, adjusting the horizontal deviation of two groups of wheels on each group of balance trolleys to be less than 0.1%, and then screwing and fixing the fixing bolts of the wheels;
f. adjusting the level deviation out-of-tolerance of two groups of wheels of a single balance trolley, and adjusting the installation angle of a fixing bolt of a rotary bearing box;
g. adjusting the horizontal deviation of the assembled large-vehicle single-side balance trolley, and replacing the single-side balance trolley at one time;
h. preassembling a new balance trolley on an end beam (1), fixing a steel wire with the diameter of 0.5mm at the position, which is about 150mm away from the center of a cart track (5), on the outer side of a wheel along the running direction of the cart, and adjusting the horizontal deflection from 2 groups of wheels on each group of trolleys to the steel wire to be less than or equal to 1mm by taking the steel wire as a reference, wherein the internal and external displacement of 4 groups of trolleys along the cart track (5) is less than or equal to 2 mm;
i. and (3) screwing the fixing bolts of the balance trolleys and the end beam (1), checking whether the horizontal deflection of all the screwed wheels changes or not at the moment, welding and fixing the positioning plates of the fixing bolts by electric welding if the horizontal deflection of all the wheels is in line with the requirements, connecting and fixing the couplers of the driving wheels (8) by other constructors, and finishing the adjustment.
2. The method for adjusting wheel replacement of a large crane according to claim 1, wherein: the dismounting method of the balance beam (2) on the other side is basically the same, and when the wheel on the other side is adjusted horizontally, the track gauge and the horizontal deviation of the wheel are adjusted by using the pull wires on both sides by taking the center of the cart track (5) as a reference besides the method steps on the former side.
3. The method for adjusting wheel replacement of a large crane according to claim 1, wherein: when the wheels of the passive balance trolley (2) are replaced, the oil jack jacks the balance beam (2) for about 90-110 mm, the iron pad height of 100mm is added at the center of the lower part of the active balance trolley (7) and the passive balance trolley (7), the trolley pad needing to replace wheels is in an off-angle of 3.5 degrees, and the oil jack is removed to replace the wheels.
4. The method for adjusting wheel replacement of a large crane according to claim 1, wherein: the bearing box is not required to be replaced as much as possible when the wheel or the bearing is replaced each time, the original bearing box is only required to be removed when the wheel or the bearing is replaced, the positioning mark bolt is not removed, the original bearing box is sleeved on a new bearing, and the bearing is installed and fixed on the balance trolley according to the original fixing mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911310028.4A CN111115446B (en) | 2019-12-18 | 2019-12-18 | Wheel replacement and adjustment method for large crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911310028.4A CN111115446B (en) | 2019-12-18 | 2019-12-18 | Wheel replacement and adjustment method for large crane |
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| Publication Number | Publication Date |
|---|---|
| CN111115446A true CN111115446A (en) | 2020-05-08 |
| CN111115446B CN111115446B (en) | 2021-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911310028.4A Active CN111115446B (en) | 2019-12-18 | 2019-12-18 | Wheel replacement and adjustment method for large crane |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU954357A1 (en) * | 1979-05-28 | 1982-08-30 | Предприятие П/Я М-5287 | Device for replacement of running wheels of crane balancing trolleys |
| US6033119A (en) * | 1995-10-18 | 2000-03-07 | Mannesmann Ag | Locomotive running wheel block quipped for simplified replacement of worn parts |
| CN203715086U (en) * | 2014-01-24 | 2014-07-16 | 宁波钢铁有限公司 | Quick changing device for wheel parts of crane |
| CN105883635A (en) * | 2016-06-22 | 2016-08-24 | 中国铁道科学研究院运输及经济研究所 | Travel trolley of container gantry crane and method for quickly changing wheels |
| CN206033130U (en) * | 2016-09-28 | 2017-03-22 | 湖北鸿路钢结构有限公司 | Quick replacement driving bull wheel device |
| CN107512661A (en) * | 2016-06-17 | 2017-12-26 | 宝山钢铁股份有限公司 | A kind of replacing of vehicle wheel method |
-
2019
- 2019-12-18 CN CN201911310028.4A patent/CN111115446B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU954357A1 (en) * | 1979-05-28 | 1982-08-30 | Предприятие П/Я М-5287 | Device for replacement of running wheels of crane balancing trolleys |
| US6033119A (en) * | 1995-10-18 | 2000-03-07 | Mannesmann Ag | Locomotive running wheel block quipped for simplified replacement of worn parts |
| CN203715086U (en) * | 2014-01-24 | 2014-07-16 | 宁波钢铁有限公司 | Quick changing device for wheel parts of crane |
| CN107512661A (en) * | 2016-06-17 | 2017-12-26 | 宝山钢铁股份有限公司 | A kind of replacing of vehicle wheel method |
| CN105883635A (en) * | 2016-06-22 | 2016-08-24 | 中国铁道科学研究院运输及经济研究所 | Travel trolley of container gantry crane and method for quickly changing wheels |
| CN206033130U (en) * | 2016-09-28 | 2017-03-22 | 湖北鸿路钢结构有限公司 | Quick replacement driving bull wheel device |
Non-Patent Citations (1)
| Title |
|---|
| 莫志新灯: "大型门式起重机大车车轮更换修理新方式", 《民营科技》 * |
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| CN111115446B (en) | 2021-03-09 |
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