CN211920627U - Light lifting appliance for dismantling cantilever box girder segment - Google Patents
Light lifting appliance for dismantling cantilever box girder segment Download PDFInfo
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- CN211920627U CN211920627U CN202020107015.9U CN202020107015U CN211920627U CN 211920627 U CN211920627 U CN 211920627U CN 202020107015 U CN202020107015 U CN 202020107015U CN 211920627 U CN211920627 U CN 211920627U
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Abstract
The utility model provides a light-duty hoist for cantilever box girder segment section is demolishd, includes T and constructs the segment, still includes a set of hoist structure that corresponds the setting on every T box that constructs the segment, and every set of hoist structure all includes lower part joist, shoulder pole frame, hoisting beam, lug and connection jib. The utility model discloses the structural style that the main part framework adopted 25 # double pin channel-section steels and 28# I-steel to make up mutually, and the anchor between hoist and the roof beam body adopts 32mm finish rolling screw-thread steel as the jib, and the jib replaces the suspender as the anchor of hoist and case roof beam, and the hoist adopts the suspender to be connected with being connected of jack-up coaster, and the suspender adopts the processing of the thick manganese steel sheet of 4cm to form. This hoist has optimized the major structure of the truss-like that adopts in to traditional hoist structure, changes the truss-like structure into the form of I-steel construction, when having reduced the hoist height, the structure is merrily and lightheartedly, and it is more convenient to install, to the destruction significantly reduced of old bridge when the hoist is connected.
Description
Technical Field
The utility model relates to a bridge hoist, especially a hoist that is used for cantilever box girder segment section to demolish.
Background
In the prior art, the sling used in the removal of the old bridge has the defects that the sling is connected with a box girder by arranging a rectangular notch on the top surface of the old bridge to install the sling, the position of an original old bridge prestressed steel beam is difficult to avoid in the process of notching, the original old bridge prestressed steel beam is inevitably damaged, and the safety of the original structure is damaged. When the bridge is dismantled, large equipment cannot be adopted for dismantling in the dismantling of the dangerous bridge with serious bearing capacity reduction, so that the dismantling equipment is selected as a bridge deck crane, and when the bridge deck crane is used for dismantling, the height of the truss structure adopted by the traditional lifting appliance exceeds the clearance height of the bridge deck crane due to the height limitation of the bridge deck crane, and the truss structure has the defects of relatively large size, high height of the lifting appliance and heavy structure, and is not suitable for dismantling of the dangerous bridge with serious bearing capacity reduction.
Therefore, a lifting appliance is urgently needed, the structural form of the lifting appliance is simplified, the self weight of the lifting appliance is reduced, and the height of the lifting appliance is reduced so as to meet the requirement of clearance for construction of a bridge deck crane.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a light-duty hoist for cantilever box girder segment section is demolishd will solve current hoist and be connected with the case roof beam and hardly avoid former old bridge prestressing steel bundle position, and inevitable causes the damage to it, influences the technical problem who has destroyed the safety of original structure, and the truss-like structure that still needs to solve the hoist simultaneously highly exceeds bridge floor crane headroom height, and the size is great, and the structure is heavy, is not suitable for the technical problem in the serious bridge crane disassembly that descends of bearing capacity.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a light lifting appliance for dismantling cantilever box girder sections comprises T-shaped sections and a set of lifting appliance structures correspondingly arranged on a box body of each T-shaped section, wherein each set of lifting appliance structure comprises a lower supporting beam, a carrying pole frame, a lifting beam, lifting eyes and a connecting lifting rod,
the lower supporting beams are two in number and are longitudinally arranged on the lower side surface of a top plate of the T-shaped section along the bridge direction of the T-shaped section, a rectangular carrying pole frame is arranged on the upper side surface of the top plate, the carrying pole frame is formed by enclosing and fixedly connecting transverse and longitudinal bidirectional carrying pole beams,
the lifting beam is longitudinally arranged on the upper side of the carrying pole frame, two ends of the lifting beam are respectively in pin joint with two transverse carrying pole beams, the bottom of the lifting lug is in pin joint with the middle part of the lifting beam, the top of the lifting lug is connected with a hoisting device,
the connecting suspension rods are four in number and are respectively arranged at four corners of the shoulder pole frame, the connecting suspension rods sequentially penetrate through the shoulder pole frame, the top plate of the T-shaped structure section and the lower supporting beam from top to bottom, the top of the connecting suspension rods is fastened to the upper side surface of the shoulder pole frame through upper nuts, and the bottom of the connecting suspension rods is fastened to the lower side surface of the lower supporting beam through lower nuts.
The lower joist is a double-spliced channel steel.
The shoulder pole frame is made of double-spliced I-shaped steel.
The lifting beam is a double-spliced channel steel.
The lifting lug is a manganese steel plate lifting strip, the lifting lug is inserted between the double-spliced channel steel, and the bottom of the lifting lug is connected with the channel steel on two sides through a first pin shaft in a pin joint mode.
The double-spliced channel steel is characterized in that two sides of the double-spliced channel steel are respectively provided with a reinforcing assembly, the reinforcing assemblies are respectively fixedly connected to the upper sides of the two transverse carrying pole beams and comprise a vertical reinforcing plate and two reinforcing ribs perpendicular to the reinforcing plate, the reinforcing plates are longitudinally arranged, the reinforcing ribs are transversely arranged, the inner sides of the two reinforcing ribs are respectively fixedly connected to the two outer edges of the reinforcing plates, and the reinforcing plates on the two sides and the lifting beam are in pin joint through second pin shafts.
The connecting suspender sequentially penetrates through the double-spliced I-shaped steel and the double-spliced channel steel from top to bottom.
The connecting suspender is 32mm finish rolling deformed steel bar.
The manganese steel plate sling is 4cm in thickness, 40cm in width and 1.2m in length.
The model of double pin channel-section steel is 25, the model of double pin I-steel is 28.
Compared with the prior art the utility model has the following characteristics and beneficial effect:
the utility model discloses the structural style that the main part framework adopted 25 # double pin channel-section steels and 28# I-steel to make up mutually, and the anchor between hoist and the roof beam body adopts 32mm finish rolling screw-thread steel as the jib, and the jib replaces the suspender as the anchor of hoist and case roof beam, and the hoist adopts the suspender to be connected with being connected of jack-up coaster, and the suspender adopts the processing of the thick manganese steel sheet of 4cm to form. This hoist has optimized the major structure of the truss-like that adopts in to traditional hoist structure, changes the truss-like structure into the form of I-steel construction, when having reduced the hoist height, the structure is merrily and lightheartedly, and it is more convenient to install, to the destruction significantly reduced of old bridge when the hoist is connected.
The utility model discloses the total height can be 1.45m, 32mm finish rolling screw-thread steel overall length 16m, and this hoist total weight is 1.61 t. Compared with the traditional truss type lifting appliance, the total height is generally 2.5m-3m, and the total weight is 8-T10T, the lifting appliance has the advantages of obvious reduction in self weight and structural height, and great advantage in T-shaped section dismantling.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a side view schematic of the structure of fig. 1.
Fig. 3 is a partially enlarged schematic view of fig. 1.
Fig. 4 is a partially enlarged schematic view of fig. 2.
Reference numerals: 1-lower joist, 2-carrying pole frame, 3-lifting beam, 4-lifting lug, 5-connecting hanger rod, 6-top plate, 7-first pin shaft, 8-reinforcing plate, 9-reinforcing rib, 10-upper nut, 11-lower nut and 12-second pin shaft.
Detailed Description
Referring to fig. 1-4, the light lifting appliance for dismantling the cantilever box girder segment comprises T-shaped segments and a set of lifting appliance structures correspondingly arranged on a box body of each T-shaped segment, wherein each set of lifting appliance structure comprises a lower joist 1, a carrying pole frame 2, a lifting beam 3, a lifting lug 4 and a connecting suspension rod 5.
The lower supporting beams 1 are two in number and are longitudinally arranged on the lower side surface of a top plate 6 of the T-shaped section along the bridge direction of the T-shaped section, a rectangular carrying pole frame 2 is arranged on the upper side surface of the top plate, and the carrying pole frame 2 is formed by enclosing, closing and fixedly connecting transverse and longitudinal bidirectional carrying pole beams.
The lifting beam 3 is longitudinally arranged on the upper side of the carrying pole frame 2, two ends of the lifting beam 3 are respectively in pin joint with two transverse carrying pole beams, the bottom of the lifting lug 4 is in pin joint with the middle of the lifting beam 3, and the top of the lifting lug 4 is connected with a lifting device.
The connecting suspension rods 5 are four in number and are respectively arranged at four corners of the carrying pole frame 2, the connecting suspension rods 5 sequentially penetrate through the carrying pole frame 2, a top plate of a T-shaped structure section and the lower supporting beam 1 from top to bottom, the top of the connecting suspension rods 5 is fastened to the upper side surface of the carrying pole frame 2 through upper nuts 10, and the bottom of the connecting suspension rods 5 is fastened to the lower side surface of the lower supporting beam 1 through lower nuts 11.
The lower joist 1 is a double-spliced channel steel.
The shoulder pole frame 2 is made of double-spliced I-shaped steel.
The lifting beam 3 is a double-spliced channel steel.
The lifting lug 4 is a manganese steel plate lifting strip, the lifting lug 4 is inserted between the double-spliced channel steel, and the bottom of the lifting lug 4 is connected with the channel steel on two sides in a pin joint mode through a first pin shaft 7 which penetrates through the channel steel.
The two sides of the double-spliced channel steel are respectively provided with a reinforcing assembly, the reinforcing assemblies are respectively fixedly connected to the upper sides of the two transverse carrying pole beams and comprise a vertical reinforcing plate 8 and two reinforcing ribs 9 perpendicular to the reinforcing plate, the reinforcing plates are longitudinally arranged, the reinforcing ribs are transversely arranged, the inner sides of the two reinforcing ribs are respectively fixedly connected to the two outer side edges of the reinforcing plates, and the reinforcing plates on the two sides and the lifting beam 3 are in pin joint through a second pin shaft 12.
The connecting suspender 5 sequentially penetrates through the double-spliced I-shaped steel and the double-spliced channel steel from top to bottom.
The connecting suspender 5 is 32mm finish-rolled deformed steel bar.
The manganese steel plate sling is 4cm in thickness, 40cm in width and 1.2m in length.
The model of double pin channel-section steel is 25, the model of double pin I-steel is 28.
When the T-shaped structure section is hoisted by the hoisting tool, the dead weight of the box girder is firstly that the force is transmitted to the carrying pole frame through the finish rolling deformed steel bar connected with the box girder, and then the force is transmitted to the hoisting beam through the carrying pole frame, so the connection mode between the carrying pole frame and the hoisting beam adopts pin joint, and needs to be reinforced by steel plates, and the reinforcing plate is reinforced by full-length welding; the lifting beam integrally transmits the weight of the lifting appliance and the box girder to a lower slide of the hoisting equipment through a manganese steel plate lifting lug with the thickness of 4cm to lift and lower the box girder segment.
The specific implementation mode of the lifting appliance in the construction is as follows:
step one, measuring and paying off, and releasing the position of a finish rolling deformed steel bar suspender.
And step two, drilling holes according to the designed position of the connecting suspender.
And step three, manufacturing and assembling the lower supporting beam 1, the shoulder pole frame 2 and the lifting beam 3, and connecting the lower supporting beam, the shoulder pole frame 2 and the lifting beam through a second pin shaft.
And step four, connecting the hanging rods in a penetrating manner, screwing the upper nut and the lower nut tightly, and matching four gaskets with a single hanging rod.
And fifthly, mounting the lifting lug, penetrating a first pin shaft, and connecting the lifting lug with the lower trolley shackle of the hoisting equipment.
Claims (10)
1. The utility model provides a light-duty hoist that is used for cantilever box girder segment section to demolish, includes T and constructs the section, still includes a set of hoist structure that corresponds the setting on the box of every T structure section, its characterized in that: each set of lifting appliance structure comprises a lower supporting beam (1), a carrying pole frame (2), a lifting beam (3), a lifting lug (4) and a connecting suspension rod (5),
the lower supporting beams (1) are two in number and are longitudinally arranged on the lower side surface of a top plate (6) of the T-shaped section along the bridge direction of the T-shaped section, a rectangular carrying pole frame (2) is arranged on the upper side surface of the top plate, the carrying pole frame (2) is formed by enclosing and fixedly connecting transverse and longitudinal bidirectional carrying pole beams,
the lifting beam (3) is longitudinally arranged on the upper side of the carrying pole frame (2), two ends of the lifting beam (3) are respectively in pin joint with two transverse carrying pole beams, the bottom of the lifting lug (4) is in pin joint with the middle part of the lifting beam (3), the top of the lifting lug (4) is connected with a hoisting device,
the utility model discloses a carrying pole frame, including carrying pole frame (2), connecting jib (5), T constructs the roof and the lower part joist (1) of festival section, connecting jib (5) four totally, set up respectively in the four corners department of carrying pole frame (2), connecting jib (5) from top to bottom runs through carrying pole frame (2), T in proper order to the top of connecting jib (5) is through the upside surface of upper nut fastening to carrying pole frame (2), the bottom of connecting jib (5) is through the lower side surface of lower part joist (1) fastening to.
2. A lightweight spreader for the demolition of a cantilever box girder segment according to claim 1, wherein: the lower joist (1) is a double-spliced channel steel.
3. A lightweight spreader for the demolition of cantilevered box girder segments according to claim 2, characterized in that: the shoulder pole frame (2) is made of double-spliced I-shaped steel.
4. A lightweight spreader for the demolition of a cantilever box girder segment according to claim 3, wherein: the lifting beam (3) is a double-spliced channel steel.
5. A lightweight spreader for the demolition of a cantilever box girder segment according to claim 4, wherein: the lifting lugs (4) are manganese steel plate lifting straps, the lifting lugs (4) are inserted between the double-spliced channel steel, and the bottoms of the lifting lugs (4) are connected with the channel steel on two sides in a pin mode through penetrating first pin shafts (7).
6. A lightweight spreader for the demolition of cantilevered box girder segments according to claim 5, characterized in that: the two sides of the double-spliced channel steel are respectively provided with a reinforcing assembly, the reinforcing assemblies are respectively and fixedly connected to the upper sides of the two transverse carrying pole beams and comprise a vertical reinforcing plate (8) and two reinforcing ribs (9) perpendicular to the reinforcing plate, the reinforcing plates are longitudinally arranged, the reinforcing ribs are transversely arranged, the inner sides of the two reinforcing ribs are respectively and fixedly connected to the two outer edges of the reinforcing plate, and the reinforcing plates on the two sides and the lifting beam (3) are connected through a second pin shaft (12) in a pin mode.
7. A lightweight spreader for the demolition of a cantilever box girder segment according to claim 4, wherein: the connecting suspender (5) sequentially penetrates through the double-spliced I-shaped steel and the double-spliced channel steel from top to bottom.
8. A lightweight spreader for the demolition of a cantilever box girder segment according to claim 1, wherein: the connecting suspender (5) is 32mm finish rolling deformed steel bar.
9. A lightweight spreader for the demolition of cantilevered box girder segments according to claim 5, characterized in that: the manganese steel plate sling is 4cm in thickness, 40cm in width and 1.2m in length.
10. A lightweight spreader for the demolition of a cantilever box girder segment according to claim 3, wherein: the model of double pin channel-section steel is 25, the model of double pin I-steel is 28.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020107015.9U CN211920627U (en) | 2020-01-17 | 2020-01-17 | Light lifting appliance for dismantling cantilever box girder segment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020107015.9U CN211920627U (en) | 2020-01-17 | 2020-01-17 | Light lifting appliance for dismantling cantilever box girder segment |
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| CN211920627U true CN211920627U (en) | 2020-11-13 |
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| CN202020107015.9U Active CN211920627U (en) | 2020-01-17 | 2020-01-17 | Light lifting appliance for dismantling cantilever box girder segment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111172903A (en) * | 2020-01-17 | 2020-05-19 | 广东冠粤路桥有限公司 | Box girder structure clamping structure and construction method thereof |
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- 2020-01-17 CN CN202020107015.9U patent/CN211920627U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111172903A (en) * | 2020-01-17 | 2020-05-19 | 广东冠粤路桥有限公司 | Box girder structure clamping structure and construction method thereof |
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