Detachable grating platform above intermediate shaft

Abstract

The detachable grating platform comprises a double-layer bottom, a mounting framework is arranged on the double-layer bottom, a steel grating assembly, a first checkered steel plate assembly and a second checkered steel plate assembly are arranged on the mounting framework, and the first checkered steel plate assembly and the second checkered steel plate assembly are located on the two sides of the steel grating assembly respectively. The steel grating assembly comprises a steel grating platform and a steel grating main body, the first checkered steel plate assembly comprises a first checkered steel plate platform and a first checkered steel plate main body, and the second checkered steel plate assembly comprises a second checkered steel plate platform and a second checkered steel plate main body. According to the technical scheme, the steel grating assembly is of a detachable structure and can be directly detached when the middle shaft is hoisted in or hoisted out for overhaul, fire cutting is not needed, safety and convenience are achieved, meanwhile, certain mass loss is reduced, the upper plane of the steel grating body and the upper plane of the checkered steel plate are in the flush state, and the platform structure in the flush state facilitates walking; and therefore, the safety and reliability are realized.

Description

Technical Field

[0001] The invention relates to the technical field of ships, and in particular to a detachable grid platform above a middle shaft. Background Art

[0002] Wood chip ship, also known as wood chip ship, is a bulk carrier specially used to transport wood chips, which are the raw materials for producing paper and paper boxes. Wood chip ship belongs to the category of bulk carrier, but it has certain differences compared with conventional bulk carrier; the density of wood chips is very light, and the sea transportation of wood chips requires a special bulk carrier with a very large capacity; in order to increase the volume of the cargo hold, the most effective way is to increase the depth, so the depth of the wood chip ship is very large; at the same time, the cargo hold adopts a single-hull structure, with a double bottom and bottom side tanks, but no top side tanks. The main shaft forgings of ships are thrust shafts, intermediate shafts and stern shafts.

[0003] At present, on many ships, according to the technical specifications or the shipowner's requirements, a steel grille is arranged above the intermediate shaft behind the main engine at the bottom of the engine room to facilitate the observation of the movement of the intermediate shaft below. Due to the harsh working environment of the ship, the hull is corroded by seawater and marine organisms for a long time. The ship's fiberglass grille has many characteristics such as high strength, acid and alkali corrosion resistance, and anti-aging, which is suitable for the use environment of the ship.

[0004] The existing grille platform is generally a 40mm thick steel grille, and the other areas next to it are paved with 4.5mm thick steel plates. There is a height difference of about 35mm between the two. The height difference poses certain safety hazards and people are prone to tripping and falling. The welded fixed structure of the grille platform is not conducive to the lifting and installation or lifting and repair of the intermediate shaft. When lifting in and out the intermediate shaft, it is necessary to use fire to cut it off, which is time-consuming and labor-intensive, and there is a certain quality loss.

[0005] Therefore, it is necessary to design a detachable grille platform above the intermediate shaft to solve the above problems. Summary of the invention

[0006] Technical issues solved: In view of the shortcomings of the prior art, the present invention provides a detachable grating platform above the intermediate shaft. The steel grating assembly is a detachable structure and can be directly removed when the intermediate shaft is hoisted in for installation or hoisted out for maintenance without the need for open flames or cutting. This is safe and convenient while reducing a certain amount of quality loss. The upper plane of the steel grating body is flush with the upper plane of the flower steel plate. The flush platform structure is conducive to walking and will not trip people when walking. It is safe and reliable, and solves the technical problems mentioned in the background technology.

[0007] Technical solution: To achieve the above object, the present invention is implemented through the following technical solutions: A detachable grille platform above an intermediate shaft comprises a double-layer bottom, a mounting frame is arranged on the double-layer bottom, a steel grille assembly, a first flower steel plate assembly and a second flower steel plate assembly are arranged on the mounting frame, the first flower steel plate assembly and the second flower steel plate assembly are respectively located on both sides of the steel grille assembly, the steel grille assembly comprises a steel grille platform and a steel grille body, the first flower steel plate assembly comprises a first flower steel plate platform and a first flower steel plate body, the second flower steel plate assembly comprises a second flower steel plate platform and a second flower steel plate body, the upper plane of the steel grille body and the upper plane of the first flower steel plate body The upper plane of the steel grating platform and the second flower steel plate body are at the same horizontal height, one side of the steel grating platform is fixedly connected to the first flower steel plate platform by mounting bolts and mounting nuts, and the other side of the steel grating platform is fixedly connected to the second flower steel plate platform by mounting bolts and mounting nuts. The steel grating assembly is a detachable structure. When hoisting the intermediate shaft and the stern shaft, the steel grating assembly can be disassembled, and can be reset and installed after the hoisting is completed. After the steel grating body is installed in place, the upper plane of the steel grating body is flush with the upper plane of the first flower steel plate body and the upper plane of the second flower steel plate body.

[0008] In a possible implementation, the steel grating assembly is located directly above the intermediate shaft, and the steel grating body is laid on the upper end of a steel grating platform, so that the movement state of the intermediate shaft below can be directly observed by standing on the platform.

[0009] In a possible implementation, the first flower steel plate body is laid on the upper end of the first flower steel plate platform. When assembling the first flower steel plate assembly, the first flower steel plate platform is first installed and fixed, and then the first flower steel plate body is laid on the first flower steel plate platform.

[0010] In a possible implementation, the second flower steel plate body is laid on the upper end of the second flower steel plate platform. When assembling the second flower steel plate assembly, the second flower steel plate platform is first installed and fixed, and then the second flower steel plate body is laid on the second flower steel plate platform.

[0011] In one possible implementation, the steel grating platform includes two groups of transverse angle steels and multiple groups of longitudinal angle steels. The steel grating platform is welded and fixed by multiple groups of transverse angle steels and multiple groups of longitudinal angle steels. It can be divided into multiple steel grating platform single structures of similar sizes according to actual length. The multiple steel grating platform single structures are covered directly above the middle axis, and then the steel grating body is laid on the steel grating platform to together constitute a steel grating assembly.

[0012] In a possible implementation, the longitudinal angle steel and the transverse angle steel are arranged vertically, and the transverse angle steels are welded and fixedly connected to each other. Multiple groups of the longitudinal angle steels are located between two groups of the transverse angle steels. Multiple groups of the longitudinal angle steels are evenly spaced along the straight direction of the transverse angle steels. The angle steels are long strips of steel with two sides perpendicular to each other to form an angle. Longitudinal angle steels and transverse angle steels of corresponding sizes can be selected according to the actual length, and then the multiple groups of transverse angle steels and the multiple groups of longitudinal angle steels are welded and fixed together to form a single body structure of the steel grating platform.

[0013] In a possible implementation, multiple groups of connection holes are opened on the two groups of transverse angle steels, and the multiple groups of connection holes are evenly spaced along the straight direction of the transverse angle steels. The multiple groups of connection holes opened on the two groups of transverse angle steels are symmetrical with respect to the longitudinal angle steels, and the steel grating platform is installed and fixed through the multiple groups of connection holes.

[0014] In a possible implementation, a plurality of connection holes are provided on the side of the first flower steel plate platform, a plurality of connection holes are provided on the side of the second flower steel plate platform, and the connection holes of the first flower steel plate platform are arranged correspondingly to the connection holes of the transverse angle steel, and the connection holes of the second flower steel plate platform are arranged correspondingly to the connection holes of the transverse angle steel, and the mounting bolts pass through the connection holes. When installing the steel grating platform, the connection holes of the transverse angle steel on one side of the steel grating platform are aligned with the connection holes of the first flower steel plate platform, and the connection holes of the transverse angle steel on the other side of the steel grating platform are aligned with the connection holes of the second flower steel plate platform. After alignment, multiple sets of mounting bolts and multiple sets of mounting nuts are used to connect and tighten, so as to achieve the tightening between the steel grating platform, the first flower steel plate platform and the second flower steel plate platform.

[0015] In a possible implementation, the steel grating body is composed of multiple groups of steel grating monomers. According to actual installation requirements, a corresponding number of steel grating monomers are selected, and the multiple groups of steel grating monomers are combined and laid together to form the steel grating body.

[0016] In a possible implementation, the steel grating monomer includes a frame, and multiple groups of flat steels and multiple groups of twisted steels are arranged on the inner side of the frame, the flat steels and the twisted steels are arranged perpendicular to each other, the multiple groups of flat steels are evenly spaced along the straight line direction of the side of the frame, the multiple groups of twisted steels are evenly spaced along the straight line direction of the side of the frame, and the frame and the flat steels are welded and fixed, and the frame and the twisted steels are welded and fixed, and the twisted steels are welded and fixed to the flat steels. Multiple groups of troughs are formed between the frame, the multiple groups of flat steels and the multiple groups of twisted steels, the multiple groups of flat steels and the multiple groups of twisted steels are cross-arranged and welded into a lattice structure of a rectangular structure, and the steel grating monomers are spliced ​​according to actual use requirements, the steel grating monomers are spliced ​​together to form a steel grating body, and two adjacent groups of steel grating monomers are fixed by C-type fasteners.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The steel grating assembly of the present invention is connected and fixed to the first and second flower steel plate assemblies by fasteners. The steel grating assembly is a detachable structure. When the intermediate shaft and the stern shaft are hoisted, the steel grating assembly can be disassembled and reset after the hoisting is completed. It is convenient, fast and cost-saving. When the intermediate shaft is hoisted in for installation or hoisted out for maintenance, it can be directly dismantled without the need for open fire cutting. It is safe and convenient, and at the same time reduces a certain amount of quality loss.

[0018] 2. After the steel grating body of the present invention is installed in place, the upper plane of the steel grating body is flush with the upper plane of the first flower steel plate body and the upper plane of the second flower steel plate body, and at the same height. The flush platform structure is conducive to walking, and the operators can walk as if walking on flat ground without stumbling, which is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0020] FIG1 is a schematic diagram of the installation of the present invention from a top view; FIG2 is a cross-sectional view AA of the present invention; FIG3 is a partial enlarged view of area A in FIG2 ; FIG4 is a schematic diagram of the overall structure of the steel grating platform of the present invention; FIG5 is a partial enlarged view of area B in FIG4 ; FIG6 is a schematic structural diagram of a longitudinal angle steel according to the present invention; FIG7 is a schematic diagram of the front view structure of the steel grating platform of the present invention; FIG8 is a schematic diagram of the top view of the steel grid platform of the present invention; FIG9 is a schematic structural diagram of a steel grille body of the present invention; FIG. 10 is a schematic structural diagram of a steel grating monomer of the present invention.

[0021] In the figure: 1. Double bottom; 2. Mounting frame; 3. Steel grille assembly; 4. First flower steel plate assembly; 5. Second flower steel plate assembly; 6. Mounting bolts; 7. Mounting nuts; 31. Steel grille platform; 32. Steel grille body; 41. First flower steel plate platform; 42. First flower steel plate body; 51. Second flower steel plate platform; 52. Second flower steel plate body; 311. Horizontal angle steel; 312. Longitudinal angle steel; 313. Connecting hole; 321. Steel grille monomer; 3211. Frame; 3212. Flat steel; 3213. Twisted steel; 3214. Trough body. DETAILED DESCRIPTION

[0022] The embodiment of the present application provides a detachable grating platform above the intermediate shaft. The steel grating assembly is a detachable structure and can be directly removed when the intermediate shaft is hoisted in for installation or hoisted out for maintenance without the need for open flames or cutting. This is both safe and convenient while reducing a certain amount of quality loss. The upper plane of the steel grating body is flush with the upper plane of the flower steel plate. The flush platform structure is conducive to walking and will not trip you when walking. It is safe and reliable, and solves the technical problems mentioned in the background technology.

[0023] The technical solution in the embodiment of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows: Embodiment 1: Please refer to Figures 1-10. The present invention provides a technical solution: a detachable grille platform above the middle shaft, including a double bottom 1. The double bottom 1 refers to the bottom structure and space composed of the bottom plate, the inner bottom plate and its frame. The double bottom 1 increases the total longitudinal strength of the hull and the local strength of the bottom, and improves the anti-sinking performance of the ship. A mounting frame 2 is provided on the double bottom 1. A steel grille assembly 3, a first flower steel plate assembly 4 and a second flower steel plate assembly 5 are provided on the mounting frame 2. The first flower steel plate assembly 4 and the second flower steel plate assembly 5 are respectively located on both sides of the steel grille assembly 3. The steel grille assembly 3 is located directly above the middle shaft. The movement state of the middle shaft can be observed through the steel grille assembly 3. The steel grille assembly 3 includes a steel grille platform 31 and a steel grille body 32. The steel grille body 32 is directly laid. The first flower steel plate assembly 4 and the second flower steel plate assembly 5 are respectively located on both sides of the steel grille assembly 3. The plate assembly 4 includes a first patterned steel plate platform 41 and a first patterned steel plate body 42, and the first patterned steel plate body 42 is directly laid. The second patterned steel plate assembly 5 includes a second patterned steel plate platform 51 and a second patterned steel plate body 52, and the second patterned steel plate body 52 is directly laid. The upper plane of the steel grating body 32, the upper plane of the first patterned steel plate body 42, and the upper plane of the second patterned steel plate body 52 are located at the same horizontal height, forming a platform structure in a flush state. One side of the steel grating platform 31 is fixedly connected to the first patterned steel plate platform 41 by mounting bolts 6 and mounting nuts 7, and the other side of the steel grating platform 31 is fixedly connected to the second patterned steel plate platform 51 by mounting bolts 6 and mounting nuts 7. The mounting bolts 6 and the mounting nuts 7 are adapted to each other, and the mounting nuts 7 are threadedly connected to the mounting bolts 6.

[0024] Among them, the thickness of the steel grille body 32 on the steel grille platform 31 is 40mm, the thickness of the first flower steel plate body 42 on the first flower steel plate platform 41 is 4.5mm, and the thickness of the second flower steel plate body 52 on the second flower steel plate platform 51 is 4.5mm. The installation height of the steel grille platform 31 is 36mm lower than the installation height of the first flower steel plate platform 41, and the installation height of the steel grille platform 31 is 36mm lower than the installation height of the second flower steel plate platform 51. The height difference between the steel grille body 32 and the first flower steel plate body 42 and the second flower steel plate body 52, plus the installation height difference between the steel grille platform 31 and the first flower steel plate platform 41 and the second flower steel plate platform 51, after the steel grille body 32 is installed in place, the upper plane of the steel grille body 32 is flush with the upper plane of the first flower steel plate body 42 and the upper plane of the second flower steel plate body 52; The flat platform structure is convenient for walking, and workers can walk on it as if on flat ground without stumbling, which is safe and reliable.

[0025] Among them, the mounting bolts 6 and the mounting nuts 7 together constitute fasteners, the steel grating platform 31 is connected to the first flower steel plate platform 41 located on one side thereof by fasteners, and the steel grating platform 31 is connected to the second flower steel plate platform 51 located on the other side thereof by fasteners, the steel grating platform 31 and the first flower steel plate platform 41 are detachable structures, and the steel grating platform 31 and the second flower steel plate platform 51 are detachable structures, and the length and width of the detachable grating platform can be determined and modified according to the actual size of the intermediate shaft and installation requirements; During disassembly, by loosening the fasteners used for fixing, the fixation between the steel grating platform 31 and the first flower steel plate platform 41 can be released, and the fixation between the steel grating platform 31 and the second flower steel plate platform 51 can be released, so that the steel grating platform 31, the first flower steel plate platform 41 and the second flower steel plate platform 51 are in a separated state. At this time, the steel grating platform 31 can be disassembled alone, that is, the disassembly of the steel grating assembly 3 is realized.

[0026] In some examples, the steel grid assembly 3 is located directly above the intermediate shaft, and the steel grid body 32 is laid on the upper end of the steel grid platform 31 .

[0027] Among them, multiple sets of fasteners are used to install and fix the steel grating assembly 3 instead of conventional welding fixed connections. When the intermediate shaft is hoisted in for installation or hoisted out for maintenance, the fasteners can be directly loosened to remove the steel grating assembly 3 without the need for open flames and cutting. After the intermediate shaft is repaired and hoisted to its original position, the fasteners can be used again to install and fix the steel grating assembly 3. Since the structure of the steel grating assembly 3 itself is not damaged when the steel grating assembly 3 is removed, the steel grating assembly 3 has no quality loss and can be reused.

[0028] In some examples, the first pattern steel plate body 42 is laid on the upper end of the first pattern steel plate platform 41. When assembling the first pattern steel plate assembly 4, the first pattern steel plate platform 41 is first installed and fixed, and then the first pattern steel plate body 42 is laid on the first pattern steel plate platform 41.

[0029] In some examples, the second pattern steel plate body 52 is laid on the upper end of the second pattern steel plate platform 51. When assembling the second pattern steel plate assembly 5, the second pattern steel plate platform 51 is first installed and fixed, and then the second pattern steel plate body 52 is laid on the second pattern steel plate platform 51.

[0030] In some examples, the steel grating platform 31 includes two groups of transverse angle steels 311 and multiple groups of longitudinal angle steels 312. The steel grating platform 31 is welded and fixed by multiple groups of transverse angle steels 311 and multiple groups of longitudinal angle steels 312. It can be divided into multiple steel grating platform 31 single structures of similar sizes according to actual length. The multiple steel grating platform 31 single structures are covered directly above the middle axis, and then the steel grating body 32 is laid on the steel grating platform 31 to form a steel grating assembly 3 together.

[0031] In some examples, the longitudinal angle steels 312 are arranged perpendicular to the transverse angle steels 311, and the transverse angle steels 311 are welded and fixedly connected to each other. Multiple groups of longitudinal angle steels 312 are located between two groups of transverse angle steels 311, and the multiple groups of longitudinal angle steels 312 are evenly spaced along the straight direction of the transverse angle steels 311.

[0032] Among them, the angle steel is a long strip of steel with two sides perpendicular to each other to form an angle. The longitudinal angle steel 312 and the transverse angle steel 311 of the corresponding size can be selected according to the actual length, and then multiple groups of transverse angle steels 311 and multiple groups of longitudinal angle steels 312 are welded and fixed together to form a single structure of the steel grating platform 31. Multiple groups of transverse angle steels 311 and multiple groups of longitudinal angle steels 312 can be combined into a variety of different load-bearing components according to actual installation requirements, which are suitable for a variety of installation scenarios.

[0033] In some examples, multiple groups of connection holes 313 are provided on both groups of transverse angle steels 311, and the multiple groups of connection holes 313 are evenly spaced along the straight direction of the transverse angle steels 311. The multiple groups of connection holes 313 provided on the two groups of transverse angle steels 311 are symmetrical about the longitudinal angle steel 312, and the steel grating platform 31 is installed and fixed through the multiple groups of connection holes 313.

[0034] In some examples, a plurality of connection holes 313 are provided on the side of the first pattern steel plate platform 41, a plurality of connection holes 313 are provided on the side of the second pattern steel plate platform 51, and the connection holes 313 of the first pattern steel plate platform 41 are provided correspondingly to the connection holes 313 of the transverse angle steel 311, and the connection holes 313 of the second pattern steel plate platform 51 are provided correspondingly to the connection holes 313 of the transverse angle steel 311, and the mounting bolts 6 pass through the connection holes 313.

[0035] Among them, when installing the steel grating platform 31, align the connection hole 313 of the transverse angle steel 311 on one side of the steel grating platform 31 with the connection hole 313 of the first flower steel plate platform 41, and align the connection hole 313 of the transverse angle steel 311 on the other side of the steel grating platform 31 with the connection hole 313 of the second flower steel plate platform 51. After alignment, use multiple sets of mounting bolts 6 and multiple sets of mounting nuts 7 to connect and tighten, so as to realize the fastening between the steel grating platform 31, the first flower steel plate platform 41 and the second flower steel plate platform 51. After the platform structure is installed and fixed, the steel grating body 32 is laid on the steel grating platform 31, the first flower steel plate body 42 is laid on the first flower steel plate platform 41, and the second flower steel plate body 52 is laid on the second flower steel plate platform 51.

[0036] By adopting the above technical solution: The steel grille assembly 3 is connected and fixed to the first flower steel plate assembly 4 and the second flower steel plate assembly 5 by fasteners. The steel grille assembly 3 is a detachable structure. When the intermediate shaft and the stern shaft are hoisted, the steel grille assembly 3 can be disassembled and reinstalled after the hoisting is completed. It is convenient and fast, and saves costs. When the intermediate shaft is hoisted in for installation or hoisted out for maintenance, it can be directly disassembled without the need for open fire cutting, which is safe and convenient, and reduces a certain amount of quality loss. After the steel grating body 32 is installed in place, the upper plane of the steel grating body 32 is flush with the upper planes of the first flower steel plate body 42 and the upper planes of the second flower steel plate body 52. ​​The flush platform structure is conducive to walking, and the operators can walk as if walking on flat ground without stumbling, which is safe and reliable.

[0037] Embodiment 2: Based on Example 1, this example introduces a specific structure of a steel grille main body 32 in a detachable grille platform above an intermediate shaft. The steel grille main body 32 is composed of a plurality of groups of steel grille monomers 321 .

[0038] Among them, according to the actual installation requirements, a corresponding number of steel grating monomers 321 can be selected, and multiple groups of steel grating monomers 321 can be combined and laid together to form a steel grating body 32. Multiple steel grating monomers 321 of similar size simplify the laying steps and facilitate production and transportation.

[0039] In some examples, the steel grating unit 321 includes a frame 3211, and a plurality of groups of flat steels 3212 and a plurality of groups of twisted steels 3213 are arranged on the inner side of the frame 3211. The flat steels 3212 and the twisted steels 3213 are arranged perpendicular to each other. The plurality of groups of flat steels 3212 are evenly spaced along the straight line direction of the side of the frame 3211, and the plurality of groups of twisted steels 3213 are evenly spaced along the straight line direction of the side of the frame 3211. The frame 3211 and the flat steels 3212 are welded and fixed, and the frame 3211 and the twisted steels 3213 are welded and fixed, and the twisted steels 3213 and the flat steels 3212 are welded and fixed, and a plurality of groups of troughs 3214 are formed between the frame 3211, the plurality of groups of flat steels 3212, and the plurality of groups of twisted steels 3213.

[0040] Among them, multiple groups of flat steels 3212 and multiple groups of twisted steels 3213 are cross-arranged and welded into a rectangular lattice structure. According to actual usage requirements, the steel grating monomers 321 are spliced ​​together to form a steel grating body 32. Two adjacent groups of steel grating monomers 321 are fixed by C-shaped fasteners.

[0041] Among them, the multiple groups of slots 3214 are grille gaps, which will not block the line of sight, and the movement state of the intermediate shaft below can be directly observed by standing on the platform.

[0042] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A removable grille platform above an intermediate shaft, comprising a double bottom (1), characterized in that: The double-layer bottom (1) is provided with a mounting frame (2), and the mounting frame (2) is provided with a steel grille assembly (3), a first flower steel plate assembly (4), and a second flower steel plate assembly (5), the first flower steel plate assembly (4) and the second flower steel plate assembly (5) are respectively located on two sides of the steel grille assembly (3), the steel grille assembly (3) comprises a steel grille platform (31) and a steel grille body (32), the first flower steel plate assembly (4) comprises a first flower steel plate platform (41) and a first flower steel plate body (42), and the second flower steel plate assembly (5) ) comprises a second flower steel plate platform (51) and a second flower steel plate body (52), the upper plane of the steel grating body (32), the upper plane of the first flower steel plate body (42) and the upper plane of the second flower steel plate body (52) are located at the same horizontal height, one side of the steel grating platform (31) is fixedly connected to the first flower steel plate platform (41) by means of mounting bolts (6) and mounting nuts (7), and the other side of the steel grating platform (31) is fixedly connected to the second flower steel plate platform (51) by means of mounting bolts (6) and mounting nuts (7).

2. The detachable grille platform above the intermediate shaft according to claim 1, characterized in that: The steel grille assembly (3) is located directly above the intermediate shaft, and the steel grille body (32) is laid on the upper end of the steel grille platform (31).

3. The detachable grille platform above the intermediate shaft according to claim 1, characterized in that: The first flower steel plate body (42) is laid on the upper end of the first flower steel plate platform (41).

4. The detachable grille platform above the intermediate shaft according to claim 1, characterized in that: The second patterned steel plate body (52) is laid on the upper end of the second patterned steel plate platform (51).

5. The detachable grille platform above the intermediate shaft according to claim 1, characterized in that: The steel grating platform (31) comprises two groups of transverse angle steels (311) and a plurality of groups of longitudinal angle steels (312).

6. The detachable grille platform above the intermediate shaft according to claim 5, characterized in that: The longitudinal angle steels (312) and the transverse angle steels (311) are arranged perpendicularly, and the transverse angle steels (311) are fixedly connected by welding, and a plurality of groups of the longitudinal angle steels (312) are located between two groups of the transverse angle steels (311), and the plurality of groups of the longitudinal angle steels (312) are evenly spaced along the straight line direction of the transverse angle steels (311).

7. The detachable grille platform above the intermediate shaft according to claim 6, characterized in that: A plurality of connection holes (313) are provided on each of the two groups of transverse angle steels (311), and the plurality of connection holes (313) are evenly spaced along the straight line direction of the transverse angle steels (311).

8. The detachable grille platform above the intermediate shaft according to claim 7, characterized in that: A plurality of connection holes (313) are provided on the side of the first patterned steel plate platform (41), and a plurality of connection holes (313) are provided on the side of the second patterned steel plate platform (51). The connection holes (313) of the first patterned steel plate platform (41) are arranged correspondingly to the connection holes (313) of the transverse angle steel (311), and the connection holes (313) of the second patterned steel plate platform (51) are arranged correspondingly to the connection holes (313) of the transverse angle steel (311), and the mounting bolts (6) pass through the connection holes (313).

9. The detachable grille platform above the intermediate shaft according to claim 1, characterized in that: The steel grille main body (32) is composed of a plurality of groups of steel grille monomers (321).

10. The detachable grille platform above the intermediate shaft according to claim 9, characterized in that: The steel grating monomer (321) comprises a frame (3211), wherein a plurality of groups of flat steels (3212) and a plurality of groups of twisted steels (3213) are arranged inside the frame (3211), wherein the flat steels (3212) and the twisted steels (3213) are arranged perpendicular to each other, wherein the plurality of groups of flat steels (3212) are evenly spaced along a straight line direction of a side edge of the frame (3211), and wherein the plurality of groups of twisted steels (3213) are arranged along a straight line direction of a side edge of the frame (3211). 11) The straight lines of the side edges are evenly spaced, and the frame (3211) and the flat steel (3212) are welded and fixed, and the frame (3211) and the twisted steel (3213) are welded and fixed, and the twisted steel (3213) and the flat steel (3212) are welded and fixed, and a plurality of groups of slots (3214) are formed between the frame (3211), the plurality of groups of flat steel (3212), and the plurality of groups of twisted steel (3213).

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