CN106320683A - Platform for installation of conical steel coal hoppers for super large clustered polygonal coal bunkers - Google Patents

Abstract

The invention discloses a platform for mounting a cone steel coal hopper of an ultra-large cluster polygonal coal bunker group. It includes the circular shape truss structure, lays steel sheet and connection on the truss structure the lug at truss structure edge, the truss structure is including passing a plurality of steel tube structure that truss structure center set up, steel tube structure links firmly together at truss structure's center, every adjacent two be equipped with between the steel tube structure and connect two the I-steel A of steel tube structure extreme point and with I-steel A is parallel and with this adjacent two the I-steel B that steel tube structure connects, every steel tube structure includes parallel arrangement's last chord member and lower chord member and connects go up the chord member with the web member between the lower chord member. The invention can reduce the construction risk factor and the construction workload, accelerate the construction progress and reduce the cost.

Description

Platform for installation of conical steel coal hoppers for super large clustered polygonal coal bunkers

technical field

The invention relates to a platform for installing a steel coal scuttle, in particular to a platform for installing a conical steel coal scuttle of a group of ultra-large clustered polygonal coal bunkers, and belongs to the technical field of construction engineering.

Background technique

The ultra-large clustered polygonal coal bunker group is a honeycomb coal bunker, which adopts a reinforced concrete structure, with a length of 210.35m, a width of 60.45m, and a height of 45m. The bunker body is composed of several hexagonal coal bunkers. The warehouse has a straight wall structure, and the steel coal hopper structure is below 20.6m.

At present, the installation of large steel coal scuttles is usually assembled on site through the platform system. Generally, scaffolding is set up on the inner periphery. First, the first section is installed, and then the lifting point is set at the first section that has been installed. After each section of the lower part is assembled on the ground, it is lifted to the designed assembly position by the electric hoist, and then the scaffolding is set up to this position, which is used as a platform for welding and testing. After this section is completed, all the scaffolding is removed, and then repeat In the construction of the next section, when using this method to erect a steel coal scuttle, the number of internal and external supports is large, the construction progress is slow, the risk factor and cost are high, and due to the welding residual stress generated during welding, fatigue deformation is easy to occur, and the stability Poor, so each coal scuttle needs to increase the internal support during the lifting process to prevent excessive deformation, which increases the workload.

Contents of the invention

In view of the above defects in the prior art, the present invention provides a steel coal hopper hoisting platform that can reduce the construction risk factor and construction workload, speed up the construction progress and reduce the cost.

The present invention is realized through the following technical scheme: a platform for installing conical steel coal hoppers of super-large clustered polygonal coal bunkers, which is characterized in that it includes a circular truss structure, and steel plates laid on the truss structure And the lifting lugs connected to the edge of the truss structure, the truss structure includes a plurality of steel pipe structures set through the center of the truss structure, the steel pipe structures are fixed together at the center of the truss structure, and every two adjacent An I-beam A connecting the endpoints of the two steel pipe structures and an I-beam B parallel to the I-beam A and connected to the adjacent two steel pipe structures are arranged between the steel pipe structures. The steel pipe structure includes an upper chord and a lower chord arranged in parallel and a web connected between the upper chord and the lower chord.

In order to better support the steel plate, several steel bars connected with the truss structure are evenly arranged between the truss structure and the steel plate.

Further, each steel pipe structure is divided into a central part and two end parts, the central part and the two end parts are connected by flanges, and the central part of each steel pipe structure is connected as a whole.

Further, the steel pipe structures are three evenly arranged.

When the present invention is used in practice, the parts required for the docking of this section of the steel coal scuttle and the previous section can be placed on the platform, and the free lifting device is used to connect the lifting lugs to control the up and down movement of the installation platform, and it is lifted to the docking position. For welded circular joints, there is no need to set up and remove internal and external supports during the assembly process, which reduces the construction risk factor and construction workload, thereby speeding up the construction progress and reducing construction costs, and it is not necessary to increase internal supports during the construction process to prevent deformation. If it is too large, the construction quality can be guaranteed and the workload can be reduced; the present invention adopts a truss structure, the overall structural strength is high, and the use is reliable, which can fully meet the assembly requirements of large steel coal buckets.

Description of drawings

Fig. 1 is the top view structure schematic diagram in the specific embodiment of the present invention;

Fig. 2 is the schematic diagram of lifting lug in the specific embodiment of the present invention;

Fig. 3 is the schematic diagram of steel pipe structure A in the specific embodiment of the present invention;

Fig. 4 is the A-A direction view of Fig. 3;

Fig. 5 is the schematic diagram of the first connecting plate in the specific embodiment of the present invention;

Fig. 6 is the schematic diagram of the second connecting plate in the specific embodiment of the present invention;

Fig. 7 is a schematic diagram of a stiffening plate in a specific embodiment of the present invention;

In the figure, 1. Truss structure, 2. Lifting lug, 3. Steel pipe structure, 31. Steel pipe structure A, 32. Steel pipe structure B, 33. Steel pipe structure C, 34. Upper chord, 35. Lower chord, 36. Web , 37, central part, 38, both ends, 4, I-beam A, 41, I-beam A ₁ , 42, I-beam A ₂ , 43, I-beam A ₃ , 5, I-beam B, 51. I-beam B ₁ , 52. I-beam B ₂ , 53. I-beam B ₃ , 6. Connecting plate, 7. Stiffener, 8. Steel bar, 9. Flange, 10. Center pipe.

detailed description

The present invention will be further described below in conjunction with accompanying drawing by non-limiting embodiment:

As shown in the accompanying drawings, a conical steel coal hopper installation platform for a super-large group of polygonal coal bunkers includes a circular truss structure 1, a steel plate (not shown) laid on the truss structure 1, and a connecting A plurality of lifting lugs 2 on the edge of the truss structure, the truss structure 1 includes a plurality of steel pipe structures 3 arranged through the center of the truss structure 1, three steel pipe structures 3 are arranged in the embodiment of the present invention, and the three steel pipe structures 3 are uniform Layout, respectively steel pipe structure A31, steel pipe structure B32 and steel pipe structure C33, the three steel pipe structures 3 are fixed together in the center of the truss structure, and each adjacent two steel pipe structures 3 are provided with endpoints connecting two steel pipe structures 3 The I-beam A4 and the I-beam B5 parallel to the I-beam A4 and connected to the two adjacent steel pipe structures 3, wherein the I-beam A ₁ 41 is located between the steel pipe structure B32 and the steel pipe structure C33 and I-beam B ₁ 51, between steel pipe structure A31 and steel pipe structure B32 is I-beam A ₂ 42 and I-beam B ₂ 52, and between steel pipe structure A31 and steel pipe structure C33 is I-beam A ₃ 43 and I-beam B ₃ 53, each steel pipe structure 3 includes upper chords 34 and lower chords 35 arranged in parallel and several webs 36 connected between the upper chords 34 and lower chords 35 . The lifting lug 2 is arranged at the end of the steel pipe structure 3 .

When the present invention is used in practice, the parts required for the docking of this section of the steel coal scuttle and the previous section can be placed on the platform, and a free lifting device is used to connect the lifting lugs to control the up and down movement of the platform, lift it to the docking position, and assemble Welding circular seam, no need to set up and dismantle inner and outer brackets during the assembly process, which reduces the construction risk factor and construction workload, thereby speeding up the construction progress and reducing construction costs.

In order to facilitate the assembly of the platform, each steel pipe structure 3 is divided into a central part 37 and two end parts 38, the central part 37 and the two end parts 38 are connected by flanges 9, and the central part 37 of each steel pipe structure 3 passes through the middle center pipe 10 The welding connection is integral, and each steel pipe structure 3 is provided with a plurality of connecting plates 6. The forms of the connecting plates 6 include two forms as shown in Figure 5 and Figure 6, and the I-beam B5 is fixed to the steel pipe structure through the connecting plates 6 Connection, in order to increase the strength of the truss structure 1, a stiffening plate 7 is provided in the center tube 10 at the center of the central part 37; in order to better support the steel plate, several truss structure connections are evenly arranged between the truss structure and the upper steel plate. The steel bars 8 together are fixedly connected to the steel pipe structure 3 through the connecting plate 6 .

Before the assembly and construction of the platform, it must be assembled by technicians in strict accordance with the drawings, and the surveyors must accurately set out the line, and the line-out error must not exceed 10mm; the diameter and wall thickness of the steel pipe must be checked, and those that do not meet the requirements must not be used; To install two steel pipes, a connecting system must be installed; the assembly of truss structure 1 adopts the combination of welding and flange connection, the weld seam must pass the non-destructive test, and the flange connection must be connected by high-strength bolts; steel pipe structure 3 must be connected after installation. Comprehensive inspection and acceptance.

The platform is assembled at the center of the steel coal hopper. After the assembly is completed, set a 1.5 times design load on the platform to carry out the self-bearing capacity of the platform and the load test of the lifting device.

The above embodiments are only used to illustrate the present invention, not to limit it, and those skilled in the art can also make changes on this basis.

Claims (4)

1. the cone steel coal hopper installation platform of ultra-large type boundling polygon coal bunker group, is characterized in that: include circle Truss structure, the steel plate being laid on described truss structure and be connected to the hanger at described truss structure edge, described truss Structure includes that, through multiple steel-tube constructions that truss structure is centrally disposed, described steel-tube construction is connected at the center of truss structure Together, be provided with between the most adjacent two described steel-tube constructions connect two described steel-tube construction end points I-steel A and with institute Stating the I-steel B that the described steel-tube construction of parallel and adjacent with this for I-steel A two connects, each described steel-tube construction includes putting down Row arrange top boom and lower boom and be connected to the web member between described top boom and described lower boom.

The cone steel coal hopper installation platform of ultra-large type boundling polygon coal bunker group the most according to claim 1, it is special Levy and be: between described truss structure and described steel plate, be evenly arranged with some steel bars linked together with truss structure.

The cone steel coal hopper installation platform of ultra-large type boundling polygon coal bunker group the most according to claim 1 and 2, its Feature is: each described steel-tube construction is divided into core and two end portions, described core to pass through with described two end portions Flange joint, the described core of each described steel-tube construction is connected as entirety.

The cone steel coal hopper installation platform of ultra-large type boundling polygon coal bunker group the most according to claim 3, it is special Levy and be: described steel-tube construction is three be evenly arranged.