CN116812789A - Rolling tire frame setting process for roller crane - Google Patents
Rolling tire frame setting process for roller crane Download PDFInfo
- Publication number
- CN116812789A CN116812789A CN202310971569.1A CN202310971569A CN116812789A CN 116812789 A CN116812789 A CN 116812789A CN 202310971569 A CN202310971569 A CN 202310971569A CN 116812789 A CN116812789 A CN 116812789A
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- China
- Prior art keywords
- rotary chassis
- jig frame
- counter roller
- rotary
- jig
- 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.)
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005096 rolling process Methods 0.000 title claims description 10
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 238000009434 installation Methods 0.000 claims abstract description 11
- 238000009966 trimming Methods 0.000 claims abstract description 7
- 238000003466 welding Methods 0.000 claims description 18
- 238000003754 machining Methods 0.000 claims description 6
- 241001669679 Eleotris Species 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000003028 elevating effect Effects 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 abstract 2
- 230000000750 progressive effect Effects 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/84—Slewing gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention relates to a roller crane roll-on/roll-off jig frame setting process, which is characterized by comprising the following steps of: the specific size control method comprises the following steps: s1: arranging a jig frame; s2: the rotary chassis is operated before turning over; s3: the reverse roller assembly is provided with a jig frame; s4: the rotary chassis is structurally provided with a jig frame; s5: the reverse idler wheel is folded and welded with the rotary chassis; s6: the weight box is provided with a final assembly jig frame and is grouted; s7: winch base installation and mechanism arrangement; s8: installing a slewing mechanism; in the invention, the mounting dimensional precision of each component is controlled from the arrangement of the jig frame of the roller crane, the precision is required to be controlled in a reasonable range in each step, and the dimensional precision control of the rotating structure is realized when the rotating structure of the crane is finally mounted; the step of installing the progressive inspection control precision reduces the assembly efficiency compared with the final inspection installation mode, but ensures the precision requirement, thereby reducing the reworking and trimming probability.
Description
Technical Field
The invention relates to the technical field of roller crane assembly jig frame arrangement, in particular to a roller crane roll-on jig frame arrangement process.
Background
The rotary chassis comprises a counter roller structure, a rotary chassis main structure, a weight box, a rotary mechanism, a truss frame and pouring weights; total weight of total rotary chassis assembly is about 1950T; the order of installation and the arrangement of the jig frame relate to the installation accuracy of the overall size, and therefore, in order to ensure the installation accuracy of the swing structure of the roller crane, it is necessary to control the installation gears at the respective positions stepwise to achieve the overall size accuracy control of the swing structure.
Disclosure of Invention
The invention aims to solve the technical problem of providing a rolling jig frame setting process of a roller crane, which can solve the problem of large size error of a general roller crane rotating structure after installation.
In order to solve the technical problems, the technical scheme of the invention is as follows: the rolling die carrier setting process of the roller crane includes casting balance weight according to the requirement after the rotary chassis and the truss frame are assembled together, and transporting the ship to a shipyard for final assembly in a modular car rolling mode; the innovation point is that: the specific size control method comprises the following steps:
s1: and (3) arranging a jig frame: in order to ensure that the assembled jig frames meet the bearing requirement, three groups of jig frames are required to be added, the assembled jig frames are arranged according to the set positions, and other requirements are executed according to the arrangement requirement of the total assembled jig frames of the rotary chassis;
s2: the operation before turning over the rotary chassis: measuring the size of an arc surface on the outer side of the arc plate of the rotary chassis to the circle center, and correcting the out-of-tolerance size before the rotary chassis and the counter rollers are assembled together; measuring the distance from the upper plane of the support rail beam of the rotary chassis to the outer arc surface and the height difference size of the upper plane of the cover plate, and trimming the upper port allowance of the web plate and the partition plate at the butt joint position of the counter roller structure according to the measurement result; after finishing machining the rail surface of the support rail beam of the rotary chassis, measuring the dimension data from the first assembling position of the rotary chassis and the counter roller assembly to the machined surface of the support rail beam by taking the machined surface of the support rail beam as a reference; the interface allowance of the front reverse tilting structure is not repaired and cut once, and when the reverse roller structure bracket which is butted with the front reverse tilting structure bracket is installed after the front reverse tilting structure bracket is assembled on a ship body, the front reverse tilting structure bracket is repaired and cut according to the actual situation of the site;
s3: the reverse roller assembly is provided with a jig frame in total: after the counter roller is hoisted in place, the horizontal level of the bearing rail surface is regulated, the levelness is required to be less than 3mm, and the verticality is less than or equal to 0.5mm; the cross center of the counter roller assembly is led to the upper plane of the processing tool, and a foreign punching mark is knocked out; checking the contact condition of the contact surface of the first counter roller assembly and the jig frame, cushioning the jig frame and the two sides of the arc web plate of the counter roller structure by using steel plates within 200mm, and arranging a jack for jacking; arranging four tire frames on the inner side of the counter roller in place;
s4: the rotary chassis is structurally provided with a jig frame in total: hoisting the rotary chassis to the jig frame, checking that the center of the rotary chassis is centered with the center of the counter roller structure, and placing the rotary chassis to the lifting jig frame after the deviation is less than 2 mm; the track surface of the support rail beam of the rotary bottom plate is adjusted to be in a horizontal state by a hydraulic jack, and the levelness is required to be less than or equal to 1mm;
s5: folding and welding the counter roller and the rotary chassis: the thickness of the bearing track surface piece of the counter roller structure component comprises 15mm of machining scratch allowance, and a size folding allowance trimming line is measured according to the size of the rail to trim and cut the folding allowance; lifting the reverse roller structure to a folding height through a hydraulic jack, using a backing plate to pad the clamping fixture and the structure in the lifting process, and welding after the welding is qualified before the welding; post-weld dimensional requirements: the levelness of the rail bearing surface of the counter roller is less than or equal to 5mm; the distance between the bearing rail surface and the rib plate is +/-3 mm from the rotation center;
s6: and (3) final assembly of the jig frame on the weight box and grouting: assembling and butting the weight box and the rotary bottom plate, adjusting the weight level, and then welding; pouring weights into the weight box body;
s7: winch base installation and mechanism arrangement: marking mounting position lines of the bases of the mechanisms in advance on the rotary chassis, and positioning and mounting the bases of the mechanisms; and checking the condition of reinforcing the rib against the bottom of the structure; after the requirements of the reverse bottom for ribs are met, welding the mechanism base; after the bases are welded, mechanism arrangement is carried out;
s8: and (3) mounting a slewing mechanism: lifting the slewing mechanism onto a slewing bracket, elevating the mechanism by a sleeper at the upper part, fixing the bottom by a clamping code, and positioning and installing the slewing mechanism in place according to the drawing requirements after the assembly is on a ship.
The invention has the advantages that:
1) In the invention, the mounting dimensional precision of each component is controlled from the arrangement of the jig frame of the roller crane, the precision is required to be controlled in a reasonable range in each step, and the dimensional precision control of the rotating structure is realized when the rotating structure of the crane is finally mounted; the step of installing the gradual detection control precision reduces the assembly efficiency compared with the final detection installation mode, but ensures the precision requirement, thereby reducing the reworking and finishing probability.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a process flow diagram of a rolling die carrier arrangement of a roller crane.
Fig. 2 to 7 are views showing an assembly process of a rolling jig for a roller crane according to the present invention.
Fig. 8 is an overall assembly state diagram of a rolling jig setting process of a roller crane.
Description of the embodiments
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
According to the roller crane roll-on jig frame setting process shown in fig. 1, after the rotary chassis and the truss frame are assembled together, counterweight is poured according to requirements, a ship is transported on a modular car roll-on mode, and the ship is transported to a shipyard for final assembly; the specific size control method comprises the following steps:
s1: and (3) arranging a jig frame: as shown in fig. 2, in order to ensure that the assembled jig frames meet the bearing requirement, three groups of jig frames need to be added, the assembled jig frames are arranged according to set positions, and other requirements are implemented according to the arrangement requirement of the total assembled jig frames of the rotary chassis;
s2: the operation before turning over the rotary chassis: measuring the size of an arc surface on the outer side of the arc plate of the rotary chassis to the circle center, and correcting the out-of-tolerance size before the rotary chassis and the counter rollers are assembled together; measuring the distance from the upper plane of the support rail beam of the rotary chassis to the outer arc surface and the height difference size of the upper plane of the cover plate, and trimming the upper port allowance of the web plate and the partition plate at the butt joint position of the counter roller structure according to the measurement result; after finishing machining the rail surface of the support rail beam of the rotary chassis, measuring the dimension data from the first assembling position of the rotary chassis and the counter roller assembly to the machined surface of the support rail beam by taking the machined surface of the support rail beam as a reference; the interface allowance of the front reverse tilting structure is not repaired and cut once, and when the reverse roller structure bracket which is butted with the front reverse tilting structure bracket is installed after the front reverse tilting structure bracket is assembled on a ship body, the front reverse tilting structure bracket is repaired and cut according to the actual situation of the site;
s3: the reverse roller assembly is provided with a jig frame in total: as shown in fig. 3: after the counter roller is hoisted in place, the horizontal level of the bearing rail surface is regulated, the levelness is required to be less than 3mm, and the verticality is less than or equal to 0.5mm; the cross center of the counter roller assembly is led to the upper plane of the processing tool, and a foreign punching mark is knocked out; checking the contact condition of the contact surface of the first counter roller assembly and the jig frame, cushioning the jig frame and the two sides of the arc web plate of the counter roller structure by using steel plates within 200mm, and arranging a jack for jacking; arranging four tire frames on the inner side of the counter roller in place;
s4: the rotary chassis is structurally provided with a jig frame in total: hoisting the rotary chassis to the jig frame, checking that the center of the rotary chassis is centered with the center of the counter roller structure, and placing the rotary chassis to the lifting jig frame after the deviation is less than 2 mm; the track surface of the support rail beam of the rotary bottom plate is adjusted to be in a horizontal state by a hydraulic jack, and the levelness is required to be less than or equal to 1mm;
s5: folding and welding the counter roller and the rotary chassis: the thickness of the bearing track surface piece of the counter roller structure component comprises 15mm of machining scratch allowance, and a size folding allowance trimming line is measured according to the size of the rail to trim and cut the folding allowance; lifting the reverse roller structure to a folding height through a hydraulic jack, using a backing plate to pad the clamping fixture and the structure in the lifting process, and welding after the welding is qualified before the welding; post-weld dimensional requirements: the levelness of the rail bearing surface of the counter roller is less than or equal to 5mm; the distance between the bearing rail surface and the rib plate is +/-3 mm from the rotation center;
s6: and (3) final assembly of the jig frame on the weight box and grouting: as shown in fig. 5: assembling and butting the weight box and the rotary bottom plate, adjusting the weight level, and then welding; pouring weights into the weight box body;
s7: winch base installation and mechanism arrangement: as shown in fig. 6: marking mounting position lines of the bases of the mechanisms in advance on the rotary chassis, and positioning and mounting the bases of the mechanisms; and checking the condition of reinforcing the rib against the bottom of the structure; after the requirements of the reverse bottom for ribs are met, welding the mechanism base; after the bases are welded, mechanism arrangement is carried out;
s8: and (3) mounting a slewing mechanism: as shown in fig. 7 and 8: lifting the slewing mechanism onto a slewing bracket, elevating the mechanism by a sleeper at the upper part, fixing the bottom by a clamping code, and positioning and installing the slewing mechanism in place according to the drawing requirements after the assembly is on a ship.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. The rolling die carrier setting process of the roller crane includes casting balance weight according to the requirement after the rotary chassis and the truss frame are assembled together, and transporting the ship to a shipyard for final assembly in a modular car rolling mode; the method is characterized in that: the specific size control method comprises the following steps:
s1: and (3) arranging a jig frame: in order to ensure that the assembled jig frames meet the bearing requirement, three groups of jig frames are required to be added, the assembled jig frames are arranged according to the set positions, and other requirements are executed according to the arrangement requirement of the total assembled jig frames of the rotary chassis;
s2: the operation before turning over the rotary chassis: measuring the size of an arc surface on the outer side of the arc plate of the rotary chassis to the circle center, and correcting the out-of-tolerance size before the rotary chassis and the counter rollers are assembled together; measuring the distance from the upper plane of the support rail beam of the rotary chassis to the outer arc surface and the height difference size of the upper plane of the cover plate, and trimming the upper port allowance of the web plate and the partition plate at the butt joint position of the counter roller structure according to the measurement result; after finishing machining the rail surface of the support rail beam of the rotary chassis, measuring the dimension data from the first assembling position of the rotary chassis and the counter roller assembly to the machined surface of the support rail beam by taking the machined surface of the support rail beam as a reference; the interface allowance of the front reverse tilting structure is not repaired and cut once, and when the reverse roller structure bracket which is butted with the front reverse tilting structure bracket is installed after the front reverse tilting structure bracket is assembled on a ship body, the front reverse tilting structure bracket is repaired and cut according to the actual situation of the site;
s3: the reverse roller assembly is provided with a jig frame in total: after the counter roller is hoisted in place, the horizontal level of the bearing rail surface is regulated, the levelness is required to be less than 3mm, and the verticality is less than or equal to 0.5mm; the cross center of the counter roller assembly is led to the upper plane of the processing tool, and a foreign punching mark is knocked out; checking the contact condition of the contact surface of the first counter roller assembly and the jig frame, cushioning the jig frame and the two sides of the arc web plate of the counter roller structure by using steel plates within 200mm, and arranging a jack for jacking; arranging four tire frames on the inner side of the counter roller in place;
s4: the rotary chassis is structurally provided with a jig frame in total: hoisting the rotary chassis to the jig frame, checking that the center of the rotary chassis is centered with the center of the counter roller structure, and placing the rotary chassis to the lifting jig frame after the deviation is less than 2 mm; the track surface of the support rail beam of the rotary bottom plate is adjusted to be in a horizontal state by a hydraulic jack, and the levelness is required to be less than or equal to 1mm;
s5: folding and welding the counter roller and the rotary chassis: the thickness of the bearing track surface piece of the counter roller structure component comprises 15mm of machining scratch allowance, and a size folding allowance trimming line is measured according to the size of the rail to trim and cut the folding allowance; lifting the reverse roller structure to a folding height through a hydraulic jack, using a backing plate to pad the clamping fixture and the structure in the lifting process, and welding after the welding is qualified before the welding; post-weld dimensional requirements: the levelness of the rail bearing surface of the counter roller is less than or equal to 5mm; the distance between the bearing rail surface and the rib plate is +/-3 mm from the rotation center;
s6: and (3) final assembly of the jig frame on the weight box and grouting: assembling and butting the weight box and the rotary bottom plate, adjusting the weight level, and then welding; pouring weights into the weight box body;
s7: winch base installation and mechanism arrangement: marking mounting position lines of the bases of the mechanisms in advance on the rotary chassis, and positioning and mounting the bases of the mechanisms; and checking the condition of reinforcing the rib against the bottom of the structure; after the requirements of the reverse bottom for ribs are met, welding the mechanism base; after the bases are welded, mechanism arrangement is carried out;
s8: and (3) mounting a slewing mechanism: lifting the slewing mechanism onto a slewing bracket, elevating the mechanism by a sleeper at the upper part, fixing the bottom by a clamping code, and positioning and installing the slewing mechanism in place according to the drawing requirements after the assembly is on a ship.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310971569.1A CN116812789A (en) | 2023-08-03 | 2023-08-03 | Rolling tire frame setting process for roller crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310971569.1A CN116812789A (en) | 2023-08-03 | 2023-08-03 | Rolling tire frame setting process for roller crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116812789A true CN116812789A (en) | 2023-09-29 |
Family
ID=88141394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310971569.1A Pending CN116812789A (en) | 2023-08-03 | 2023-08-03 | Rolling tire frame setting process for roller crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116812789A (en) |
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2023
- 2023-08-03 CN CN202310971569.1A patent/CN116812789A/en active Pending
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