CN113459937A - Reinforcing device for automobile transportation of steel box girder and transportation method - Google Patents
Reinforcing device for automobile transportation of steel box girder and transportation method Download PDFInfo
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- CN113459937A CN113459937A CN202110668906.0A CN202110668906A CN113459937A CN 113459937 A CN113459937 A CN 113459937A CN 202110668906 A CN202110668906 A CN 202110668906A CN 113459937 A CN113459937 A CN 113459937A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 254
- 239000010959 steel Substances 0.000 title claims abstract description 254
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 27
- 241001669679 Eleotris Species 0.000 claims abstract description 22
- 238000010276 construction Methods 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 6
- 239000003973 paint Substances 0.000 claims description 6
- 238000011160 research Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 239000011087 paperboard Substances 0.000 claims description 2
- 238000012549 training Methods 0.000 claims description 2
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P7/00—Securing or covering of load on vehicles
- B60P7/06—Securing of load
- B60P7/08—Securing to the vehicle floor or sides
- B60P7/12—Securing to the vehicle floor or sides the load being tree-trunks, beams, drums, tubes, or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P7/00—Securing or covering of load on vehicles
- B60P7/06—Securing of load
- B60P7/08—Securing to the vehicle floor or sides
- B60P7/0823—Straps; Tighteners
- B60P7/0853—Tools for manipulating straps or tighteners
Abstract
The invention discloses a reinforcing device and a transportation method for steel box girder automobile transportation, wherein the reinforcing device comprises a chain block, a steel wire rope, a limiting block and a sleeper; the limiting block is integrally L-shaped and comprises two vertically connected channel steels, the grooves of the two channel steels are positioned at the outer side of the L-shaped limiting block, and the groove directions of the two channel steels are mutually vertical; the sleeper is arranged on the plate of the girder transporting vehicle, the steel box girder is placed on the sleeper, the limiting blocks are arranged at the corners below the steel box girder and the grooves of the limiting blocks are positioned outside the steel box girder, the two ends of the steel wire rope respectively penetrate through the grooves of the two limiting blocks positioned on the two sides below the steel box girder and then are fixed on the girder transporting vehicle, the steel wire rope is coated on the steel box girder on the girder transporting vehicle, the middle part of the steel wire rope is provided with a chain block, and the steel box girder is fixed on the girder transporting vehicle by controlling the steel wire rope through the chain block. The reinforcing device disclosed by the invention is simple in integral structure, low in cost, good in fixing reliability, safe and stable, and has a great application prospect.
Description
Technical Field
The invention relates to the technical field of steel box girder transportation, in particular to a reinforcing device and a transportation method for steel box girder automobile transportation, which have good fixing reliability, safety and stability and are used for the steel box girder automobile transportation.
Background
The steel box girder is a steel structure of a box structure formed by welding steel plates, and the steel box girder is usually adopted as a bearing structure for a bridge with a large span; the steel box girder generally comprises a top plate, a web plate, a bottom plate, a diaphragm plate, a longitudinal stiffening rib, a transverse stiffening rib and the like, and is connected into an integral rigid structure by adopting an all-welded mode. Steel box girders are generally manufactured in factories and then transported to an installation place by automobiles or ships, and the conventional automobile transportation mode for the steel box girders is short-distance transportation by adopting modes of fixing, hoisting and supporting frames and the like, for example, CN 201910549174.6 discloses an ultrahigh steel box girder transportation device and a method for easily loading the ultrahigh steel box girder to the transportation device, and vibration in the transportation process is reduced by a spring interlayer; CN 201910677603.8 discloses a method for manufacturing and transporting a girder high steel box girder, which uses a plurality of supporting cylinders with hydraulic jacks on the top to support the upper steel box girder on a vehicle; CN 201621062868.5 discloses a temporary supporting device for steel box girder transportation, which supports a steel box girder without web plate on one side by a supporting column with adjustable height to prevent deformation; CN 201820857697.8 discloses a transportation device for a cross-status main road steel box girder, which puts the steel box girder on a support table for traction movement. Although the fixing mode can solve some problems of the steel box girder to a certain extent, the fixing mode is still not suitable for the long-distance transportation of the ultra-wide and ultra-long steel box girder, when the ultra-wide and ultra-long steel box girder is in long-distance transportation, the fixed hoisting support frame is easy to loosen, so that the steel box girder is deformed, and meanwhile, safety accidents such as the loosening of the steel box girder support frame, the sliding of the steel box girder, the side turning of the girder transporting vehicle and the like easily occur when the girder transporting vehicle turns or the vehicle runs at a high speed, so that great potential safety hazards exist.
Therefore, it is necessary to provide a reinforcing device for steel box girder automobile transportation, which has good fixing reliability and is safe and stable.
Disclosure of Invention
Due to the defects in the prior art, the invention provides the reinforcing device for the steel box girder automobile transportation, which has good fixing reliability, is safe and stable, and solves the problems that the safety accidents of a box girder supporting frame, such as loose span, slipping of a steel box girder, side turning of a girder transporting vehicle and the like easily occur in the conventional steel box girder automobile transportation reinforcing mode.
In order to achieve the purpose, the invention provides the following technical scheme:
a reinforcing device for steel box girder automobile transportation comprises a chain block, a steel wire rope, a limiting block and a sleeper;
the limiting block is integrally L-shaped and comprises two vertically connected channel steels, the grooves of the two channel steels are positioned at the outer side of the L-shaped limiting block, and the groove directions of the two channel steels are mutually vertical;
the sleeper is arranged on the plate of the girder transporting vehicle, the steel box girder is placed on the sleeper, the limiting blocks are arranged at the corners below the steel box girder and the grooves of the limiting blocks are positioned outside the steel box girder, the two ends of the steel wire rope pass through the grooves of the two limiting blocks positioned on the two sides below the steel box girder respectively and then are fixed on the girder transporting vehicle, the steel wire rope is coated on the steel box girder on the girder transporting vehicle, the middle part of the steel wire rope is provided with a chain block, the steel box girder is fixed on the girder transporting vehicle by controlling the steel wire rope through the chain block, and after the chain block is tightened, the limiting blocks and the chain block cannot slide along with jolt in the running process of the automobile.
The reinforcing device for the steel box girder automobile transportation has a simple integral structure, all components can be conveniently obtained on site, the limiting block can be processed by two pieces of channel steel and is simple and easy to obtain and low in cost, the chain block is a manual hoisting machine which is simple to use and convenient to carry, is also called as a chain block or a chain block, has the characteristics of safety, reliability, simplicity and convenience in maintenance, high mechanical efficiency, small hand chain tension, light self weight, convenience in carrying, attractive appearance, small size and durability, can be widely applied to factories, mines, construction sites, wharfs, docks, warehouses and the like as mounting machines and goods to be hoisted, and can be conveniently obtained on site The defects of safety accidents such as steel box girder slipping, girder transporting vehicle side turning and the like have excellent safety and great application prospect.
As a preferred technical scheme:
according to the reinforcing device for the steel box girder in the automobile transportation, the steel box girder is reasonably segmented and partitioned to the maximum extent according to the road transportation, the maximum width of the segmented and partitioned steel box girder is not more than 4m, and the maximum length of the segmented and partitioned steel box girder is not more than 30 m.
The reinforcing device for the steel box girder in the automobile transportation comprises cushion blocks arranged at two corners above the steel box girder;
the cushion block is made of sleepers, after the chain block is tightened, the steel wire rope is tightly embedded into the cushion block, the steel box girder is tightly pressed on a plate of the girder transporting vehicle, so that the steel box girder cannot jump up and down along with jolt of the vehicle in the running process, and the cushion block is arranged one way along the length direction of the steel box girder and does not exceed 3 m.
According to the reinforcing device for steel box girder automobile transportation, the type of the chain block is 5 tons (the steel wire rope is also provided with the chain block), and the chain block is provided with a double-brake system, so that the possibility of the chain block loosening and losing control in the automobile running process is further reduced.
According to the reinforcing device for the steel box girder automobile transportation, the two channel steels in the limiting block are fixed through welding;
the inner side of the limiting block is welded and fixed with a corner below the steel box girder (the inner corner is welded and fixed with two corners below the steel box girder temporarily), two ends of a steel wire rope on the chain block respectively penetrate through a groove of a channel steel of the limiting block and then are fixed on a girder transporting vehicle, and after the chain block is tightened, the steel wire rope can only slide up and down in a groove opening, so that the steel box girder cannot slide in the horizontal direction along with jolt in the driving process of the vehicle.
According to the reinforcing device for the steel box girder automobile transportation, the contact surfaces of the cushion block and the steel wire rope and the contact surfaces of the limiting block and the steel wire rope are isolated by soft cloth or rubber, so that the steel wire rope is prevented from being abraded.
The reinforcing device for the steel box girder automobile transportation comprises a steel channel, wherein the steel channel is 14# steel channel made of Q235B;
the length of two relatively vertical parts of the L-shaped limiting block is 200mm, and corners of the grooves of two channel steels of the L-shaped limiting block are polished smoothly by using a grinding wheel, so that the steel wire rope is prevented from being scratched.
In addition, the invention also provides a transportation method applying the reinforcing device for the automobile transportation of the steel box girder, which comprises the following steps:
step S1: before the transportation of the over-limit steel box girder, thorough research and research are carried out on road conditions passed by transportation vehicles, the bearing capacity of bridges, the clearance height of roads, the passing width, the traffic flow along the roads, the climate conditions and the like so as to ensure the safety and the smooth transportation of goods, vehicles, roads and bridges;
step S2: according to the size and weight of the component, the transportation of the steel box girder is carried out by adopting a large-scale flat-bed trailer, the transportation of the steel box girder is carried out at night as much as possible, and because the component is ultra-long and ultra-wide, a signal lamp is arranged during the transportation, a transportation scheme is reported to a traffic police department for approval before the transportation, and a traffic administration is requested to assist the driving, the drawing and the road sealing when necessary, so as to ensure the safety and the timely transportation of the steel girder to the site;
step S3: before loading operation, a technician carries out technical settlement of hoisting and unloading, wherein a commander, a cable operator (a crane worker) and a hoisting machinery operator must be subjected to professional learning and safety technical training to guarantee post-working, and the used hoisting machinery, a sling and a shackle are guaranteed to be perfect;
step S4: preparing a transport vehicle in advance according to the requirements of a construction party, transferring the transport vehicle to a steel box girder manufacturing plant, firstly, aligning the center point of a vehicle plate, keeping the center point consistent with the center of the steel box girder to be transported, placing a section of sleeper on the vehicle plate at intervals of 2m, and positioning a sleeper pad below a partition plate to avoid the deformation of the steel box girder;
step S5: firstly, connecting a steel wire rope on hoisting machinery on a plate of a beam transporting vehicle with a lifting lug on a steel box beam, slowly lifting the steel box beam by the hoisting machinery, pouring the transport vehicle into the lower part of the steel box beam, slowly lowering the steel box beam by the hoisting machinery onto the plate on the transport vehicle beam, detecting the load conditions of all supporting points by using a hydraulic system on a flat car after the hoisting machinery is completely unloaded, and ensuring that a flat car group is horizontally horizontal;
step S6: aiming at the problem that the rigidity of a part of open steel box girders cannot meet the transportation requirement, angle steel or channel steel needs to be added on the outer side of the box girder for temporary reinforcement in order to avoid transportation deformation;
step S7: and binding and reinforcing the steel box girder by using the chain block, wherein two ends of the chain block at each binding point are symmetrically bound with the binding points and the binding ear rings of the flat car group in a splayed shape respectively.
As a preferred technical scheme:
the transportation method as described above, further comprising the steps of:
step S8: when the chain block is used for bundling and reinforcing the steel box girder body and the flat car set, the contact part of the steel wire rope and the steel box girder body needs to be padded by soft cloth or thin rubber;
step S9: in order to prevent the steel box girder from moving laterally, a limiting block is additionally welded between the two sides below the steel box girder and the carriage, so that the steel box girder is fixed on the carriage and cannot generate displacement, and then the steel box girder is tightly bound with the carriage by a chain block;
step S10: the steel box girder is firmly supported in the transportation process to prevent deformation, a paperboard or a rubber sheet is padded at the supporting point of the steel box girder to prevent paint damage, a temporarily reinforced welding spot is timely polished and brushed with oil before installation, and the rubber sheet is added at the contact part of a steel wire rope for sealing the vehicle and a main girder to prevent paint damage;
step S11: a plurality of (two) red flashing rods are respectively arranged on the front, middle and rear ends of the steel box girder to warn.
The invention has the following advantages or beneficial effects:
the invention relates to a reinforcing device and a transportation method for steel box girder automobile transportation, which have simple integral structure, all components can be conveniently obtained on site, a limiting block can be processed by two pieces of channel steel, the reinforcing device is simple and easy to obtain and has low cost, a chain block is a manual hoisting machine which is simple to use and convenient to carry, and the device can be conveniently obtained on site.
Drawings
The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.
FIG. 1 is an assembled schematic view of the reinforcing apparatus for steel box girder automobile transportation of the present invention;
FIG. 2 is a cross-sectional view of the reinforcing apparatus for steel box girder automobile transportation of the present invention;
FIG. 3 is a three-dimensional view of a stop block;
the device comprises a steel box girder, a cushion block, a chain block, a steel wire rope, a sleeper, a beam transporting vehicle and a limiting block, wherein the steel box girder comprises 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts and 7 parts.
Detailed Description
The structure of the present invention will be further described with reference to the accompanying drawings and specific examples, but the present invention is not limited thereto.
Example 1
A reinforcing device for steel box girder automobile transportation is shown in figures 1 and 2 and comprises a cushion block 2, a chain block 3, a steel wire rope 4, a sleeper 5 and a limiting block 7;
the limiting block 7 is integrally L-shaped as shown in fig. 3, and comprises two vertically welded channel steels (No. 14 channel steel made of Q235B), the grooves of the two channel steels are positioned at the outer side of the L-shaped limiting block, the groove directions of the two channel steels are mutually perpendicular, the lengths of two relatively perpendicular parts of the L-shaped limiting block are both 200mm, and the corners of the grooves of the two channel steels of the L-shaped limiting block are polished smoothly by using a grinding wheel, so that a steel wire rope is prevented from being scratched;
the steel box girder 1 is reasonably segmented and partitioned to the maximum extent according to road transportation, the maximum width of the segmented and partitioned steel box girder is not more than 4m, and the maximum length of the segmented and partitioned steel box girder is not more than 30 m;
the sleeper 5 is arranged on a plate of a girder transporting vehicle 6, the steel box girder 1 is placed on the sleeper 5, the limiting blocks 7 are arranged at the lower corner of the steel box girder 1, the grooves of the limiting blocks are positioned on the outer side of the steel box girder 1, two ends of the steel wire rope 4 respectively penetrate through the grooves of the two limiting blocks 7 positioned on two sides below the steel box girder 1 and then are fixed on the girder transporting vehicle 6, the steel wire rope 4 is coated on the steel box girder 1 on the girder transporting vehicle 6, the chain block 3 is arranged in the middle of the steel wire rope 4, the steel box girder 1 is fixed on the girder transporting vehicle 6 by controlling the steel wire rope 4 through the chain block 3, and after the chain block 3 is tightened, the limiting blocks 7 and the chain block 3 cannot slide along with jolt in the driving process of the automobile;
the cushion blocks 2 are made of sleepers and arranged at two corner positions above the steel box girder 1, after the chain block 3 is tightened, the steel wire ropes 4 are tightly embedded in the cushion blocks 2 to tightly press the steel box girder 1 on a plate of a girder transporting vehicle 6, so that the steel box girder 1 cannot jump up and down along with jolt of the vehicle in the driving process, and the cushion blocks 2 are arranged one by one along the length direction of the steel box girder 1 and are not more than 3 m;
the chain block 3 consists of a chain block with the model number of 5 tons and a steel wire rope, and is provided with a double-brake system, so that the possibility of the chain block being loosened and out of control in the running process of the automobile is further reduced;
the width of the sleeper 4 is not less than 22cm, the thickness is not less than 16cm, the quality of the sleeper is intact, and the phenomenon of splitting and breakage is avoided;
the inner angle of the limiting block 7 and two corners below the steel box girder 1 are welded and fixed temporarily, two ends of a steel wire rope 4 on the chain block 3 respectively penetrate through a groove of channel steel of the limiting block 7 and then are fixed on the girder transporting vehicle 6, and after the chain block 3 is tightened, the steel wire rope 4 can only slide up and down in a groove opening, so that the steel box girder 1 cannot slide in the horizontal direction along with jolt in the driving process of the vehicle;
the contact surfaces of the cushion block 2 and the steel wire rope 4 and the contact surfaces of the limiting block 7 and the steel wire rope 4 are isolated by soft cloth or rubber, so that the steel wire rope is prevented from being abraded.
Example 2
A method for carrying out automobile transportation on a steel box girder by applying a reinforcing device for the automobile transportation on the steel box girder comprises the following steps:
step S1: before transportation of the over-limit steel box girder, thorough research and research are carried out on road conditions passed by transportation vehicles, bearing capacity of bridges, clearance height of roads, passing width, traffic flow along the roads, climate conditions and the like so as to ensure the safety and smooth transportation of goods, vehicles, roads and bridges.
Step S2: according to the size and weight of the component, the transportation of the steel box girder is carried out by adopting a large-scale flat-bed trailer, the transportation of the steel box girder is carried out at night as much as possible, and because the component is overlong and superwide, a signal lamp is arranged during the transportation, the transportation scheme is approved by a traffic police department before the transportation, and a traffic administration is requested to assist the driving, the drawing and the road sealing when necessary, so as to ensure the safety of the steel girder and timely transport to the site.
Step S3: before loading operation, a technician carries out technical background of hoisting and unloading. The commander, the operator (crane) and the operator of the hoisting machinery must be specially studied and trained in safety technology to ensure the job. The hoisting machinery used and the slings, slings and shackles are guaranteed to be perfect.
Step S4: preparing a transport vehicle in advance according to the requirements of a construction party, transferring the transport vehicle to a steel box girder manufacturing plant, firstly, aligning the center point of a vehicle plate, keeping the center point consistent with the center of the steel box girder to be transported, placing a section of sleeper on the vehicle plate at intervals of 2m, and positioning a sleeper pad below a partition plate to avoid the deformation of the steel box girder; when the sleeper is arranged, the tail part of the steel box girder is higher than the head part, and the tail part of the steel box girder is not overhung too long and is controlled within the range of 6 m.
Step S5: firstly, a steel wire rope on a hoisting machine on a plate of a beam transporting vehicle is connected with a lifting lug on a steel box girder, the steel box girder is slowly lifted by the hoisting machine, at the moment, the transport vehicle is poured into the lower part of the steel box girder, the hoisting machine slowly lowers the steel box girder onto the plate on the transport vehicle girder, after the hoisting machine is completely unloaded, a hydraulic system on a flat car is used for detecting the load condition of each pivot, and the flat car is ensured to be horizontal.
Step S6: aiming at the problem that the rigidity of a part of open steel box girders cannot meet the transportation requirement, angle steel or channel steel needs to be added on the outer side of the box girder for temporary reinforcement in order to avoid transportation deformation;
step S7: and (5) binding and reinforcing the steel box girder by using a chain block. Two ends of the chain block of each binding point are symmetrically bound with the binding points and the binding ear rings of the flat car group in a splayed shape respectively.
Step S8: when the chain block is used for bundling and reinforcing the steel box girder body and the flat car group, the contact part of the steel wire rope and the steel box girder body needs to be padded by soft cloth or thin rubber.
Step S9: in order to prevent the steel box girder from moving laterally, a limiting block is additionally welded between the two sides below the steel box girder and the carriage, so that the steel box girder is fixed on the carriage and cannot generate displacement, and then the steel box girder is tightly bound with the carriage by a chain block.
Step S10: the steel box girder should support firmly in the transportation, prevents to produce and warp, and cardboard or rubber should be laid to the steel box girder strong point, prevents the paint damage, should polish in time and brush oil to the solder joint of interim reinforcement before the installation, and the rubber should also be put in the contact department of sealing wire rope and girder, prevents the paint damage.
Step S11: 2 red flashing rods are respectively arranged on the front, middle and rear sides of the steel box girder to warn.
Step S12: speed limitation of the transport process:
the bridge ramp is not higher than 30 km/h;
the highest running speed of the common road surface is not higher than 50 km/h;
the speed of the rough road section of the construction site road: not more than 5 km/h;
travel speed at the construction site through various obstacles: not more than 5 km/h;
speed of travel when building site passes through a bend: not more than 5 km/h;
speed of travel when building site passes through the bridge: not more than 3 km/h.
In summary, the reinforcing device for the steel box girder automobile transportation disclosed by the invention has a simple overall structure, all components can be conveniently obtained on site, the limiting block can be processed by two pieces of channel steel, the reinforcing device is simple and easy to obtain and has low cost, the chain block is a manual hoisting machine which is simple to use and convenient to carry, and the device can be conveniently obtained on site.
Those skilled in the art will appreciate that variations may be implemented by those skilled in the art in combination with the prior art and the above-described embodiments, and will not be described herein in detail. Such variations do not affect the essence of the present invention and are not described herein.
The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments to equivalent variations, without departing from the spirit of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (9)
1. The utility model provides a reinforcing apparatus for be used for steel case roof beam automobile transportation which characterized in that: the reinforcing device comprises a chain block, a steel wire rope, a limiting block and a sleeper;
the limiting block is integrally L-shaped and comprises two vertically connected channel steels, the grooves of the two channel steels are positioned at the outer side of the L-shaped limiting block, and the groove directions of the two channel steels are mutually vertical;
the sleeper is arranged on the plate of the girder transporting vehicle, the steel box girder is placed on the sleeper, the limiting blocks are arranged at the corners below the steel box girder and the grooves of the limiting blocks are located on the outer side of the steel box girder, the two ends of the steel wire rope penetrate through the grooves of the two limiting blocks located on the two sides below the steel box girder respectively and then are fixed on the girder transporting vehicle, the steel wire rope is wrapped on the steel box girder on the girder transporting vehicle, the middle part of the steel wire rope is provided with a chain block, and the steel box girder is fixed on the girder transporting vehicle by controlling the steel wire rope through the chain block.
2. A reinforcing apparatus for steel box girder automobile transportation according to claim 1, wherein the maximum width of the steel box girder is not more than 4m and the maximum length is not more than 30 m.
3. The reinforcing apparatus for steel box girder automobile transportation according to claim 1, further comprising pads disposed at two corners above the steel box girder;
the cushion blocks are made of sleepers and are arranged along the length direction of the steel box girder by no more than 3 m.
4. The reinforcing device for steel box girder automobile transportation according to claim 1, wherein the chain block is 5 tons in size and is provided with a double brake system.
5. The reinforcing device for the steel box girder automobile transportation according to claim 1, wherein two channel steels in the limiting blocks are fixed by welding;
the inner side of the limiting block is welded and fixed with a corner below the steel box girder.
6. The reinforcing device for the steel box girder automobile transportation according to claim 3, wherein the contact surfaces of the cushion block and the steel wire rope and the contact surfaces of the limiting block and the steel wire rope are isolated by soft cloth or rubber.
7. The reinforcing device for steel box girder automobile transportation according to claim 1, wherein the channel steel is a 14# channel steel made of Q235B;
the length of two relatively vertical parts of the L-shaped limiting block is 200mm, and corners of the grooves of two channel steels of the L-shaped limiting block are polished smoothly by using a grinding wheel.
8. A transportation method applying the reinforcing device for steel box girder automobile transportation according to any one of claims 1 to 7, wherein the transportation method comprises the following steps:
step S1: before the transportation of the over-limit steel box girder, thorough research and research are carried out on road conditions passed by transportation vehicles, the bearing capacity of bridges, the road clearance height, the passing width, the traffic flow along the way and the climate conditions so as to ensure the safety and the smooth transportation of goods, vehicles, roads and bridges;
step S2: according to the size and weight of the component, the transportation of the steel box girder is carried out by adopting a large-scale flat-bed trailer, the transportation of the steel box girder is carried out at night as much as possible, and because the component is ultra-long and ultra-wide, a signal lamp is arranged during the transportation, a transportation scheme is reported to a traffic police department for approval before the transportation, and a traffic administration is requested to assist the driving, the drawing and the road sealing when necessary, so as to ensure the safety and the timely transportation of the steel girder to the site;
step S3: before loading operation, a technician carries out technical delivery of hoisting and unloading, wherein a commander, a cable operator and a hoisting machinery operator must be subjected to professional learning and safety technical training to guarantee post, and the used hoisting machinery, a sling and a shackle are guaranteed to be perfect;
step S4: preparing a transport vehicle in advance according to the requirements of a construction party, transferring the transport vehicle to a steel box girder manufacturing plant, firstly, aligning the center point of a vehicle plate, keeping the center point consistent with the center of the steel box girder to be transported, placing a section of sleeper on the vehicle plate at intervals of 2m, and positioning a sleeper pad below a partition plate to avoid the deformation of the steel box girder;
step S5: firstly, connecting a steel wire rope on hoisting machinery on a plate of a beam transporting vehicle with a lifting lug on a steel box beam, slowly lifting the steel box beam by the hoisting machinery, pouring the transport vehicle into the lower part of the steel box beam, slowly lowering the steel box beam by the hoisting machinery onto the plate on the transport vehicle beam, detecting the load conditions of all supporting points by using a hydraulic system on a flat car after the hoisting machinery is completely unloaded, and ensuring that a flat car group is horizontally horizontal;
step S6: aiming at the problem that the rigidity of a part of open steel box girders cannot meet the transportation requirement, angle steel or channel steel needs to be added on the outer side of the box girder for temporary reinforcement in order to avoid transportation deformation;
step S7: and binding and reinforcing the steel box girder by using the chain block, wherein two ends of the chain block at each binding point are symmetrically bound with the binding points and the binding ear rings of the flat car group in a splayed shape respectively.
9. The transportation method of claim 8, further comprising the steps of:
step S8: when the chain block is used for bundling and reinforcing the steel box girder body and the flat car set, the contact part of the steel wire rope and the steel box girder body needs to be padded by soft cloth or thin rubber;
step S9: in order to prevent the steel box girder from moving laterally, a limiting block is additionally welded between the two sides below the steel box girder and the carriage, so that the steel box girder is fixed on the carriage and cannot generate displacement, and then the steel box girder is tightly bound with the carriage by a chain block;
step S10: the steel box girder is firmly supported in the transportation process to prevent deformation, a paperboard or a rubber sheet is padded at the supporting point of the steel box girder to prevent paint damage, a temporarily reinforced welding spot is timely polished and brushed with oil before installation, and the rubber sheet is added at the contact part of a steel wire rope for sealing the vehicle and a main girder to prevent paint damage;
step S11: a plurality of red flashing rods are respectively arranged on the front, middle and rear sides of the steel box girder to warn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110668906.0A CN113459937A (en) | 2021-06-16 | 2021-06-16 | Reinforcing device for automobile transportation of steel box girder and transportation method |
Applications Claiming Priority (1)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114351595A (en) * | 2021-12-31 | 2022-04-15 | 广东力特工程机械有限公司 | Prestressed concrete box girder transportation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114351595A (en) * | 2021-12-31 | 2022-04-15 | 广东力特工程机械有限公司 | Prestressed concrete box girder transportation method |
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