A steel foundation for installing a tower crane on the top of a coke oven permanent greenhouse roof steel truss

Abstract

A kind of steel foundation of tower crane installed on the top of coke oven permanent greenhouse roof steel truss, including two main load-bearing steel beams, connecting cross beam, inclined support steel pipe, stiffener, connecting bolt, special fixed leg, characterized in that: the two main load-bearing steel beams are arranged between upper chord steel pipe of coke oven machine side truss, the connecting cross beam is arranged between the two main load-bearing steel beams, the inclined support steel pipe is supported between upper chord steel pipe node and tower crane support sealing plate, the stiffener is arranged at the intersection of main load-bearing beam and connecting cross beam, the connecting bolt is arranged on each fixed leg, a tower crane is installed on the special fixed leg.The present application has the advantages of solving the problem of tight space on both sides of coke oven, limited environmental space, difficult positioning of truck crane, tower crane can be directly unloaded, improving material transportation and unloading efficiency, ensuring material supply, construction and production do not interfere with each other, continuous installation work, high construction efficiency, greatly shortened total construction period, low mechanical cost and good economic benefits.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of industrial coke oven construction, in particular to a steel foundation for installing a tower crane on the top of a steel truss of a permanent greenhouse roof of a coke oven. BACKGROUND

[0002] The coke oven is usually produced in an open-air mode, which produces a large amount of flue gas pollutants, and the permanent greenhouse roof is a new type of environmental protection dust removal facility in recent years. The main steel truss of the greenhouse roof is the main load-bearing structure, and there are secondary trusses, platform steel plates, dust removal pipelines, equipment, etc. on both sides and the upper part of the steel truss. Usually, a truck crane is used for installation, but the efficiency is low. During the production process of the coke oven, the coke pushing car runs back and forth on the ground, and cannot be positioned for a long time. Under the production state of the coke oven, the coke pushing car runs back and forth on the ground, and there is no installation site for the dust removal equipment and pipeline system on the coke side, so it is difficult for the crane to be positioned during construction. The conventional method is to wait for the coke oven to be overhauled, and then position the truck crane on the ground at the position of the coke pushing car to install the steel structure members and equipment. The overhaul time of the coke oven is short, usually 2-3 hours, and the construction efficiency is low, which has a great impact on production.

[0003] Therefore, the known installation method of the main steel truss of the greenhouse roof by using the truck crane has the above-mentioned inconveniences and problems. SUMMARY

[0004] The purpose of the present application is to provide a safe and reliable steel foundation for installing a tower crane on the top of a steel truss of a permanent greenhouse roof of a coke oven.

[0005] To achieve the above-mentioned purpose, the technical solution of the present application is as follows:

[0006] A steel foundation for installing a tower crane on the top of a steel truss of a permanent greenhouse roof of a coke oven, comprising two main load-bearing steel beams, a connecting cross beam, an inclined support steel pipe, a stiffening rib, a connecting bolt and a special fixed supporting leg, characterized in that:

[0007] The two main load-bearing steel beams are arranged between the upper chord steel pipes of the coke oven machine side truss, and the main load-bearing steel beams are made of on-site welded H-shaped steel. Two groups of bolt mounting holes are arranged on the upper and lower flanges at the position of the tower crane support in the middle of each steel beam. The two main load-bearing steel beams are arranged perpendicular to the main truss upper chord steel pipes, and are used to directly bear the tower crane load. The horizontal center line of the main load-bearing steel beam is at the same horizontal plane height as the horizontal center line of the upper chord steel pipe. The center distance of the main load-bearing steel beam is the distance between the tower crane legs, and the center distance is 1465mm. The two ends of the two main load-bearing steel beams are cut into concave arc shapes, the arc diameter is consistent with the outer diameter of the upper chord steel pipe, and the two are welded into a whole in a T-shaped butt joint manner. The tower crane load borne by the main load-bearing steel beam is transmitted to the steel truss upper chord steel pipe through the T-shaped connecting weld;

[0008] The connecting cross beam is arranged between the two main load-bearing steel beams, and the center line position of the connecting cross beam is opposite to the tower crane support;

[0009] The inclined support steel pipe is supported between the upper chord steel pipe joint and the tower crane support sealing plate, and four horizontal inclined support steel pipes are welded to enhance the overall horizontal torsional stiffness of the tower crane steel foundation and bear the horizontal torque of the tower crane.

[0010] The stiffening ribs are arranged at the intersection of the main load-bearing beam and the connecting cross beam, and the stiffening ribs and end sealing plates are welded between the upper and lower flanges of the main load-bearing beam. The stiffening ribs and sealing plates serve to reinforce the flanges of the main beam at the tower crane support position and prevent local deformation.

[0011] The connecting bolts are arranged on each fixed leg and mounted on the main load-bearing steel beam.

[0012] A tower crane is mounted on the special fixed leg, the tower crane has a height of 12m, an arm length of 55m, a total weight of 400KN, and a maximum lifting moment of 800KN·m at the distal end of the lifting arm.

[0013] The steel foundation of the coke oven permanent greenhouse roof steel truss top mounted tower crane of the present application can also be further realized by the following technical measures.

[0014] The aforementioned coke oven permanent greenhouse roof steel truss top mounted tower crane steel foundation, wherein the H-shaped steel has a specification of ≥H500*500*30*30mm.

[0015] The aforementioned coke oven permanent greenhouse roof steel truss top mounted tower crane steel foundation, wherein the bolt mounting hole has a hole distance of ≥300mm and a hole diameter of ≥45mm.

[0016] The aforementioned coke oven permanent greenhouse roof steel truss top mounted tower crane steel foundation, wherein the tower crane is a QTZ80-6013 type tower crane.

[0017] The aforementioned coke oven permanent greenhouse roof steel truss top mounted tower crane steel foundation, wherein the connecting cross beam adopts a rolled H-shaped steel HM488*300*11*18mm.

[0018] The aforementioned coke oven permanent greenhouse roof steel truss top mounted tower crane steel foundation, wherein the inclined support steel pipe is a Φ325*16mm seamless steel pipe.

[0019] The aforementioned coke oven permanent greenhouse roof steel truss top mounted tower crane steel foundation, wherein the ring-shaped stiffening rib is a 20mm thick steel plate, and the inner diameter of the ring-shaped stiffening rib is the same as that of the upper chord steel pipe, and the width is 100mm.

[0020] The aforementioned coke oven permanent greenhouse roof steel truss top mounted tower crane steel foundation, wherein the connecting bolt has a length of 650mm and a material of 8.8 grade M42mm high-strength bolt.

[0021] By adopting the technical scheme, the steel foundation of the tower crane installed on the top of the coke oven permanent greenhouse roof steel truss has the following advantages:

[0022] 1. The problem of tight site on both sides of the coke oven, limited environmental space and difficulty of automobile crane positioning is solved;

[0023] 2. After the transportation material vehicles arrive at the site, the tower crane can directly unload on the outside road, and the materials are transported to the roof platform, thereby avoiding waiting for production and maintenance time, improving the material transportation and unloading efficiency, and ensuring the material supply;

[0024] 3. The construction and production do not interfere with each other, the installation work is continuous, the construction efficiency is high, and the total construction period is greatly shortened;

[0025] 4. The mechanical cost is greatly reduced by replacing the automobile crane with the tower crane, and the economic benefit is good. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a general elevation view of the tower crane installed in the embodiment of the present application;

[0027] Figure 2 It is a plane view of the steel foundation of the tower crane installed on the top of the coke oven permanent greenhouse roof steel truss in the embodiment of the present application;

[0028] Figure 3 It is a main steel beam elevation view in the embodiment of the present application;

[0029] Figure 4 It is a main steel beam plane view in the embodiment of the present application;

[0030] Figure 5 It is a connecting cross beam plane view in the embodiment of the present application;

[0031] Figure 6 It is a stiffening rib and end plate plane view in the embodiment of the present application;

[0032] Figure 7 It is an inclined support steel pipe plane view in the embodiment of the present application.

[0033] In the figure: 1 main load-bearing steel beam, 2 connecting cross beam, 3 inclined rod steel pipe support, 4 stiffening rib, 5 connecting bolt, 6 special support, 7 tower crane steel foundation, 8 tower crane, 9 machine side main steel truss, 10 vertical support, 11 horizontal scissors support, 13 upper truss, 14 ring stiffening plate, 15 sealing plate, 16 inclined support steel pipe. DETAILED DESCRIPTION

[0034] The present application will be further described below in combination with the embodiments and the accompanying drawings.

[0035] Example 1

[0036] Please refer to Figures 1-2 , Figure 1 is the overall elevation view of the tower crane installation embodiment of the present application, Figure 2 is the steel foundation plane view of the tower crane installation at the top of the coke oven permanent greenhouse roof steel truss of the embodiment of the present application. The steel foundation 7 of the tower crane installation at the top of the coke oven permanent greenhouse roof steel truss of the present application comprises two main load-bearing steel beams 1, a connecting cross beam 2, a diagonal steel pipe support 3, a stiffening rib 4, a connecting bolt 5, and a special fixed support 6. A vertical support 10 and a horizontal scissors support 11 are arranged below the tower crane steel foundation 7.

[0037] Figure 3 is the main steel beam elevation view of the embodiment of the present application, Figure 4 is the main steel beam plane view of the embodiment of the present application. The two main load-bearing steel beams are arranged between the top chord steel pipes of the coke oven machine side truss, and the main load-bearing steel beams adopt site-welded H-shaped steel with a specification of H500*500*30*30mm. Two groups of bolt mounting holes are arranged on the upper and lower flanges at the tower crane support position in the middle of each steel beam, each group has four holes with a hole distance of 300mm and a hole diameter of 45mm, which are used for directly bearing the tower crane load; the two main load-bearing steel beams are arranged perpendicular to the main truss top chord steel pipes, and the horizontal center line of the main load-bearing steel beam is at the same horizontal plane height as the horizontal center line of the top chord steel pipe. The center distance of the main load-bearing steel beams is the distance between the tower crane legs, and a QTZ80-6013 type tower crane 8 is adopted with a center distance of 1465mm; the two ends of the main load-bearing steel beam are cut into concave arcs with a diameter consistent with the outer diameter of the top chord steel pipe, and the two are welded into an integral body in a T-shaped butt joint manner, the flanges and webs at the arc interface position of the main load-bearing steel beam are both punched with double-face 12mm bevels, and the welds are penetrated. The tower crane load borne by the main load-bearing steel beam is transmitted to the steel truss top chord steel pipe through the T-shaped connecting weld.

[0038] Figure 5 is the connecting cross beam plane view of the embodiment of the present application. The connecting cross beam 2 is two connecting cross beams welded between the two main load-bearing steel beams, and the connecting cross beam serves to connect the two load-bearing steel beams to become a non-deformation plane steel frame foundation. The connecting cross beam adopts rolled H-shaped steel HM488*300*11*18mm, and the center line position is directly opposite to the tower crane support with a distance of 1465mm.

[0039] Figure 7 is the diagonal support steel pipe plane view of the embodiment of the present application. The diagonal support steel pipe 16 is arranged between the top chord steel pipe node and the tower crane support sealing plate 15, and four horizontal diagonal support steel pipes are welded to enhance the overall horizontal torsional stiffness of the tower crane steel foundation and bear the horizontal torque of the tower crane. The diagonal support steel pipe adopts Φ325*16mm seamless steel pipe.

[0040] Figure 6It is a planar schematic view of the stiffening rib and end plate of the embodiment of the present application. The stiffening rib is arranged at the intersection of the main load-bearing beam and the connecting cross beam, three 20mm-thick steel plate stiffening ribs and end plates are welded between the upper and lower flanges of the main load-bearing beam, the stiffening ribs and end plates serve to reinforce the flanges of the main beam at the tower crane support position and prevent local deformation; a circular ring-shaped stiffening rib 14 is welded to the outer ring of the upper chord steel pipe at the intersection of the steel truss upper chord steel pipe and the main beam, the thickness is 20mm, the inner diameter is the same as that of the upper chord steel pipe, and the width is 100mm, which enhances the carrying capacity of the upper chord steel pipe and prevents local deformation of the steel pipe.

[0041] The connecting bolts are 4 high-strength bolts with a length of 650mm and a material of 8.8 grade M42mm at each fixed leg, the high-strength bolts are installed on the main load-bearing steel beam, and the nuts are downward.

[0042] The special fixed support 6 is provided with a tower crane, the tower crane has a tower body height of 12m, an arm length of 55m, a total weight of 400KN, and a maximum lifting moment of 800KN·m at the distal end of the hoisting arm.

[0043] The present application has substantial characteristics and significant technical progress, the steel foundation of the tower crane installed at the top of the coke oven permanent greenhouse roof steel truss solves the problems of tight space on both sides of the coke oven, limited environmental space, and difficulty in positioning of the truck crane, and the like. When operating at the conventional coke oven machine side position, the construction and hoisting are affected by the coke pushing vehicle operation, the operation time is short, the efficiency is low, and the labor cost is high. After the transportation material vehicle arrives at the scene, the tower crane can directly unload the vehicle on the outside road, transport to the roof platform, avoid waiting for production maintenance time, improve the material transportation and unloading efficiency, and ensure the material supply. Construction and production do not interfere with each other, the installation work is continuous, the construction efficiency is high, and the total construction period is greatly shortened. The tower crane replaces the truck crane, the mechanical cost is greatly reduced, and the economic benefit is good.

[0044] The above embodiments are only used to illustrate the present application, and are not limited to the present application. Those skilled in the art can make various transformations or changes without departing from the spirit and scope of the present application. Therefore, all equivalent technical solutions should belong to the scope of the present application, which should be defined by the claims.

Claims

1. A steel foundation for installing a tower crane on the top of a steel truss roof for a permanent coke oven shed, comprising two main load-bearing steel beams, a connecting crossbeam, diagonal support steel pipes, stiffening ribs, connecting bolts, and fixed legs, characterized by: The two main load-bearing steel beams are arranged between the truss upper chord steel tubes on the coke oven machine side. The main load-bearing steel beams are made of on-site welded H-shaped steel. Two sets of bolt mounting holes are set on the upper and lower flanges of the tower crane support position in the middle of each main load-bearing steel beam; the two main load-bearing steel beams are arranged perpendicular to the truss upper chord steel tubes and are used to directly bear the tower crane load. The horizontal center line of the main load-bearing steel beam and the horizontal center line of the truss upper chord steel tube are at the same horizontal plane height; the center spacing of the main load-bearing steel beams is the tower crane leg spacing, and the center spacing is 1465mm; the two ends of the two main load-bearing steel beams are cut into a concave arc shape, the diameter of the concave arc is consistent with the outer diameter of the truss upper chord steel tube, and the two are welded into a whole in a T-shaped butt-jointed manner. The tower crane load borne by the main load-bearing steel beam is transmitted to the truss upper chord steel tube through the T-shaped connection weld; The connecting crossbeam is arranged between the two main load-bearing steel beams, and the center line of the connecting crossbeam is directly opposite to the tower crane support; The inclined support steel pipe is supported between the upper chord steel pipe node and the tower crane support cover plate, and four inclined support steel pipes are welded on the horizontal plane to enhance the overall horizontal torsional rigidity of the tower crane steel foundation and withstand the horizontal torque of the tower crane; The stiffening ribs are arranged at the intersection of the main load-bearing steel beam and the connecting crossbeam, and the stiffening ribs and end cover plates are welded between the upper and lower flanges of the main load-bearing steel beam. The function of the stiffening ribs and the cover plates is to reinforce the flange of the main load-bearing steel beam at the tower crane support position to prevent local deformation; annular stiffening ribs are welded at the intersection of the truss upper chord steel pipe and the main load-bearing steel beam and on the outer ring of the truss upper chord steel pipe to enhance the bearing capacity of the truss upper chord steel pipe and prevent local deformation of the truss upper chord steel pipe; The connecting bolts are provided on each fixed leg and mounted on the main load-bearing steel beam; A tower crane is installed on the fixed support leg. The tower crane has a tower body height of 12m, a boom length of 55m, a total weight of 400KN, and a maximum lifting torque of 800KN·m at the far end of the boom.

2. The steel foundation for installing a tower crane on the top of the steel truss of the permanent coke oven shed roof as claimed in claim 1, characterized in that: The specification of the H-shaped steel is ≥H500*500*30*30mm.

3. The steel foundation for installing a tower crane on the top of the steel truss of the permanent coke oven shed roof as claimed in claim 1, characterized in that: The bolt mounting hole spacing is ≥300mm and the hole diameter is ≥45mm.

4. The steel foundation for installing a tower crane on the top of the steel truss of the permanent coke oven shed roof as claimed in claim 1, characterized in that: The tower crane is a QTZ80-6013 tower crane.

5. The steel foundation for installing a tower crane on the top of the steel truss of the permanent coke oven shed roof as claimed in claim 1, characterized in that: The connecting beam is made of rolled H-shaped steel HM488*300*11*18mm.

6. The steel foundation for installing a tower crane on the top of the steel truss of the permanent coke oven shed roof as claimed in claim 1, characterized in that: The inclined support steel pipe is a Φ325*16mm seamless steel pipe.

7. The steel foundation for installing a tower crane on the top of the steel truss of the permanent coke oven shed roof as claimed in claim 1, characterized in that: The annular stiffening rib is a steel plate with a thickness of 20 mm, the inner diameter of the annular stiffening rib is the same as the upper chord steel pipe, and the width is 100 mm.

8. The steel foundation for installing a tower crane on the top of the steel truss of the permanent coke oven shed roof as claimed in claim 1, characterized in that: The connecting bolts are 650mm long, 8.8 grade M42mm high-strength bolts.

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