CN217080450U

CN217080450U - Ready-package shaft structure

Info

Publication number: CN217080450U
Application number: CN202220658019.5U
Authority: CN
Inventors: 王志宏; 王天利; 张广荣
Original assignee: Hengshui Yitong Pipe Industry Co Ltd
Current assignee: Hengshui Yitong Pipe Industry Co Ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-07-29
Anticipated expiration: 2032-03-25

Abstract

The utility model provides a ready-package shaft structure belongs to shaft technical field, including a plurality of arc slab, a plurality of connecting pieces and rotatory stair, a plurality of head and the tail can be dismantled each other in proper order and connect and enclose into the circular shape arc slab of closed form, is the range upon range of form on the shaft direction of height and is provided with the arc slab that the connection can be dismantled to the multilayer, and a plurality of connecting pieces all are used for connecting on the shaft horizontal plane and vertical face on two adjacent arc slab, rotatory stair connect on multilayer structure's arc slab inner wall. The utility model provides a pair of ready-package shaft structure has solved current shaft structure construction inconvenient, and the long technical problem of engineering time has fast assembly shaft structure, and construction convenience can drop into operation as early as possible after the construction, shortens engineering time, improves the efficiency of construction and reduces construction cost's technological effect.

Description

Ready-package shaft structure

Technical Field

The utility model belongs to the technical field of the shaft structure, more specifically say, relate to a ready-package shaft structure.

Background

For some shaft construction projects excavated underground, a shaft structure needs to be formed in the shaft after excavation, and later construction and the like in the shaft structure in the later period are facilitated. The formation of shaft structure among the prior art all forms through construction such as cast in situ concrete cooperation reinforcing bar, and this kind of mode operating efficiency who forms the shaft structure is lower, need wait to use the shaft after the sclerosis behind the concreting, can not realize can putting into use after quick construction, and current construction mode construction cost is higher moreover, and the engineering time is longer.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ready-package shaft structure, it is inconvenient to aim at solving current shaft structure construction, the long technical problem of engineering time.

In order to achieve the above object, the utility model adopts the following technical scheme: the quick-assembly type vertical shaft structure comprises a plurality of arc-shaped plates which are sequentially detachably connected end to end and enclose a closed round shape, the round shape enclosed by the arc-shaped plates is defined as a one-layer structure, a plurality of layers of structures are arranged in a laminated manner in the height direction of a vertical shaft, the adjacent layers of structures are detachably connected with each other, and the connection positions of the arc-shaped plates on the adjacent layers of structures are arranged in a staggered manner in the height direction of the vertical shaft;

the connecting pieces are used for connecting two adjacent arc-shaped plates on the horizontal plane and the vertical plane of the vertical shaft; and

the spiral stairs are connected to the inner wall of the arc-shaped plate of the multilayer structure.

In a possible implementation manner, a plurality of first mounting holes are uniformly distributed on the periphery of the arc-shaped plate, the first mounting holes on two adjacent arc-shaped plates are arranged in alignment, and the plurality of connecting pieces are respectively and correspondingly inserted into the adjacent first mounting holes in alignment and lock the two adjacent arc-shaped plates.

In a possible implementation manner, two adjacent arc-shaped plates are provided with a waterproof sealing gasket therebetween, a plurality of second mounting holes are uniformly distributed on the waterproof sealing gasket, and the second mounting holes are aligned with the first mounting holes and are used for inserting the connecting piece.

In a possible implementation mode, the spiral stair comprises a plurality of cantilever beams, a plurality of main frameworks and a plurality of stair boards, and is a plurality of one end of each cantilever beam is connected to one layer or a multilayer structure on the inner wall of the arc-shaped sheet, the cantilever beams are spirally arranged and are connected to a plurality of main frameworks in a spiral mode, the upper ends of the cantilever beams are connected to a plurality of stair boards in a spiral mode, and the stair boards are sequentially connected from head to tail in a spiral mode and are connected to the upper ends of the main frameworks to form a stair structure.

In a possible implementation mode, a plurality of anchor rods are inserted into the inner wall of the shaft, the outer ends of the anchor rods penetrate through the arc-shaped sheet and extend to the inner side of the arc-shaped sheet, and the cantilever beams are connected to the anchor rods and supported by the anchor rods.

In a possible implementation mode, the arc slab includes many angle steel, arc steel sheet and a plurality of stiffening rib, many the angle steel end to end encloses into the closed form arc frame with shaft arc looks adaptation, upper end and lower extreme the angle steel all is the arc, and is a plurality of the stiffening rib is vertical being located upper end and lower extreme are connected respectively to inside and both ends of arc frame the angle steel, the arc steel sheet connect in be close to the shaft inner wall on the arc side of arc frame, the connecting piece is located the arc steel sheet is inboard to form inner connection formula shaft structure.

In a possible implementation mode, the arc slab includes many angle steel, arc steel sheet and a plurality of stiffening rib, many the angle steel end to end encloses into the closed form arc frame with shaft arc looks adaptation, upper end and lower extreme the angle steel all is the arc, and is a plurality of the stiffening rib is vertical being located upper end and lower extreme are connected respectively to inside and both ends of arc frame the angle steel, the arc steel sheet connect in keep away from on the arc side of shaft inner wall on the arc frame, the connecting piece is located the arc steel sheet outside to form outer joint formula shaft structure.

In a possible implementation manner, the bottom end of the arc-shaped frame positioned at the bottom end of the shaft structure is connected with a fixed cone, and the fixed cone is suitable for penetrating into the ground at the bottom of the shaft structure so as to fix the arc-shaped frame.

In a possible implementation mode, on a group of arc-shaped frames, the bottom end of the angle steel positioned at the lower end is provided with a protrusion, the top end of the angle steel positioned at the upper end is provided with a groove, and the protrusions and the grooves on the two adjacent arc-shaped frames are in adaptive insertion connection in the height direction of the vertical shaft so as to position the installation positions of the arc-shaped frames.

In a possible implementation manner, the spiral staircase further comprises a landing connected to the plurality of main frameworks, wherein the landing is flat and is located between two adjacent landing plates near the middle of the spiral staircase.

The utility model provides a pair of ready-package shaft structure's beneficial effect lies in: compared with the prior art, the utility model relates to a ready-package shaft structure includes a plurality of arc slab, a plurality of connecting pieces and rotatory stair, a plurality of head and the tail can dismantle each other in proper order and connect and enclose into the circular shape arc slab of closed form, it is range upon range of form and is provided with the arc slab that the connection can be dismantled to the multilayer to be range upon range of form on the shaft direction of height, a plurality of connecting pieces all are used for connecting two adjacent arc slab on the shaft horizontal plane and the vertical face, rotatory stair are connected on multilayer structure's arc slab inner wall, it is inconvenient to have solved current shaft structure construction, the long technical problem of engineering time, fast assembly shaft structure has, and convenient for construction, can drop into operation as early as possible after the construction, shorten the engineering time, improve the efficiency of construction and reduce construction cost's technological effect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram (internal connection type) of a quick-mounting shaft structure provided in an embodiment of the present invention;

fig. 2 is a schematic view of an arc-shaped plate structure of a quick-mounting shaft structure provided in an embodiment of the present invention;

fig. 3 is a schematic view of an unconnected state of an arc-shaped plate and a waterproof sealing gasket of a quick-mounting shaft structure provided by an embodiment of the present invention;

fig. 4 is a schematic view of an overhanging beam structure of a spiral stair of a quick-mounting shaft structure according to an embodiment of the present invention;

fig. 5 is a schematic view of a main framework structure of a spiral stair of a quick-assembly shaft structure according to an embodiment of the present invention;

fig. 6 is a schematic view of another main frame structure of a spiral stair of a quick-assembly shaft structure according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a stair tread of a spiral stair of a quick-mounting shaft structure according to an embodiment of the present invention;

fig. 8 is a side view of an arc-shaped plate (arc-shaped frame) structure of a quick-mounting shaft structure according to another embodiment of the present invention;

FIG. 9 is a schematic structural view of the connection between the arc-shaped plate (arc-shaped frame) and the adjacent arc-shaped plate in FIG. 8;

fig. 10 is a side view of an arc-shaped plate (arc-shaped frame) structure of a quick-assembly shaft structure according to another embodiment of the present invention;

fig. 11 is a schematic view of an arc-shaped plate structure of a quick-mounting shaft structure according to another embodiment of the present invention;

fig. 12 is a schematic view of the assembled shaft structure of the arc-shaped plate in fig. 11 (external connection type).

Description of reference numerals:

1. an arc-shaped plate; 11. angle steel; 12. an arc-shaped steel plate; 13. reinforcing ribs; 2. a connecting member; 3. rotating the stairs; 31. a cantilever beam; 32. a main framework; 33. a stair tread; 34. a tray; 35. a landing; 4. a first mounting hole; 5. a waterproof gasket; 6. a second mounting hole; 7. a fixed cone; 8. a protrusion; 9. and (4) a groove.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to fig. 12, a description will now be given of a quick-mounting type shaft structure according to the present invention. The fast-assembly type shaft structure comprises a plurality of arc-shaped plates 1, a plurality of connecting pieces 2 and a rotary stair 3, wherein the arc-shaped plates 1 are sequentially detachably connected end to end and enclose a closed circular shape, the circular shape enclosed by the arc-shaped plates 1 is defined as a one-layer structure, a plurality of layers of structures are arranged in a stacked manner in the height direction of a shaft, adjacent two layers of structures are detachably connected with each other, and the connection positions of the arc-shaped plates 1 on the adjacent two layers of structures are arranged in a staggered manner in the height direction of the shaft; the connecting pieces 2 are used for connecting two adjacent arc-shaped plates 1 on the horizontal plane and the vertical plane of the vertical shaft; the spiral staircase 3 is connected to the inner wall of the arc-shaped plate 1 of the multi-layer structure.

The utility model provides a pair of ready-package shaft structure, compared with the prior art, including a plurality of arc slab 1, a plurality of connecting pieces 2 and rotatory stair 3, a plurality of head and the tail can be dismantled each other in proper order and connect and enclose into the circular shape arc slab 1 of closed form, it is the arc slab 1 that the connection can be dismantled to the multilayer to be provided with to range upon range of form on the shaft direction of height, a plurality of connecting pieces 2 all are used for connecting on the shaft horizontal plane and vertical face on two adjacent arc slab 1, rotatory stair 3 is connected on multilayer structure's arc slab 1 inner wall, it is inconvenient to have solved current shaft structure construction, the long technical problem of engineering time, fast assembly shaft structure has, and convenient construction, can drop into operation as early as possible after the construction, shorten the engineering time, improve the efficiency of construction and reduce construction cost's technological effect.

Specifically, connecting piece 2 is the bolt, and one end spiro union has the nut, can realize dismantling the connection between the adjacent arc slab 1, convenient operation, and the installation is nimble, has realized the fast assembly of shaft structure, compares in the reinforced concrete's among the prior art structure, all compares in engineering time, efficiency, the cost and has an advantage, and the intensity after assembling is also not weaker than prior art moreover. Because the arc-shaped plate 1 is made of steel components, the structural strength is high, and the deformation cannot be easily caused. The arc-shaped plates 1 with the multilayer structure are the same in the height direction of the vertical shaft, and in order to improve the connection strength, the connection position or the joint position between two adjacent arc-shaped plates 1 on the upper layer and the lower layer of the structure is arranged in a staggered mode. Through setting up rotatory stair 3, be convenient for can make the staff climb from top to bottom during later stage construction, it is stable to be connected between rotatory stair 3 and the arc slab 1, and intensity is high, does not rock. After the shaft structure is assembled, the inner wall of the shaft structure is a smooth area without leakage, namely, seams among the arc-shaped plates 1 are connected in a sealing mode, or waterproof sealant is used for smearing after the shaft structure is assembled.

In order to facilitate the installation and connection of the connecting members 2, in some embodiments, referring to fig. 1 to 12, a plurality of first installation holes 4 are uniformly distributed on the periphery of the arc-shaped plate 1, the first installation holes 4 on two adjacent arc-shaped plates 1 are aligned, and the plurality of connecting members 2 are respectively inserted into the plurality of adjacent first installation holes 4 and lock the two adjacent arc-shaped plates 1. Make connecting piece 2 pass first mounting hole 4, through revolving to twist the bolt and locking, can be with adjacent arc slab 1 fixed connection or detachable connection, connection stability is high, installs and removes the flexibility. It will be appreciated that the construction of the plurality of arcuate panels 1 used in the shaft construction is the same, which also facilitates earlier machining. A plurality of arc-shaped plate sheets 1 are arranged on one layer of structure, the radian of each arc-shaped plate sheet 1 is the same, and the arc-shaped plate sheets 1 are in butt joint and enclose into a closed circular shape. When the shaft structures with different diameters need to be manufactured, the arc-shaped plates 1 with different radians can be used for assembly.

In order to improve the sealing effect between the arc-shaped plates 1 and achieve the waterproof function, in some embodiments, please refer to fig. 1 to 12, a waterproof gasket 5 is disposed between two adjacent arc-shaped plates 1, a plurality of second mounting holes 6 are uniformly distributed on the waterproof gasket 5, and the second mounting holes 6 are aligned with the first mounting holes 4 and are used for the insertion of the connecting member 2. The waterproof sealing gasket 5 is also arc-shaped and is matched with the arc-shaped sheet bar 1 in an arc shape, and the waterproof sealing gasket and the arc-shaped sheet bar are mutually closely attached and matched, so that the sealing function is realized. In the view of fig. 1, the waterproof gaskets 5 at the same positions on the upper and lower layers are also arranged in a staggered manner, so that the sealing effect can be improved.

Specifically, the connecting piece 2 penetrates into the first mounting hole 4 and the second mounting hole 6, and the inner diameters of the two holes are equal. As shown in fig. 3, an arc-shaped plate 1 has four peripheries, and 4 waterproof gaskets 5 are correspondingly disposed, i.e., two different shapes are provided, and one shape has 2 waterproof gaskets 5.

In order to facilitate the access of workers to the vertical shaft and the climbing, in some embodiments, please refer to fig. 1 to 12, the spiral staircase 3 includes a plurality of cantilever beams 31, a plurality of main frameworks 32 and a plurality of stair treads 33, one end of the plurality of cantilever beams 31 is connected to the inner wall of the arc-shaped plate 1 of one or more layers of structures, the plurality of cantilever beams 31 are spirally arranged, the plurality of main frameworks 32 are spirally connected to the upper ends of the plurality of cantilever beams 31, and the plurality of stair treads 33 are spirally connected to the upper ends of the plurality of main frameworks 32 sequentially end to form a stair structure. Because the shaft is circular, then be provided with a plurality of cantilever beams 31 along the shaft structure inner wall from top to bottom or from bottom to top along the shaft, wherein be welded connection between cantilever beam 31 and the arc slab 1, between main skeleton 32 and the cantilever beam 31, between stair board 33 and the main skeleton 32 to can improve rotatory stair 3's bulk strength and stability.

Specifically, cantilever beam 31 is triangle-shaped and the outer end is the free end, is equipped with tray 34 in cantilever beam 31's free end upper end, has the circular arc recess on tray 34, and main skeleton 32 cross-section is circular, can correspond the adaptation and arrange in the circular arc recess on a plurality of trays 34, then main skeleton 32 is supported stably.

In order to enhance the supporting stability of the cantilever beam 31, in some embodiments, referring to fig. 1 to 12, a plurality of anchor rods (not shown in the drawings) are inserted into the inner wall of the shaft, the outer ends of the anchor rods pass through the arc-shaped plate 1 and extend to the inner side of the arc-shaped plate 1, and the plurality of cantilever beams 31 are connected to the anchor rods and supported by the anchor rods. Through trompil on arc slab 1, make the stock pass this hole, make the stock outer end be located the shaft structure inside, the stock outer end is connected with cantilever beam 31, then can improve the support stability to cantilever beam 31.

Specifically, the anchor rod is connected with the cantilever beam 31 in a welding mode, and the length direction of the anchor rod is along the radial direction of the vertical shaft.

In some embodiments, referring to fig. 1 to 12, the arc-shaped plate 1 includes a plurality of angle steels 11, an arc-shaped steel plate 12 and a plurality of reinforcing ribs 13, the plurality of angle steels 11 are connected end to form a closed arc-shaped frame adapted to an arc shape of the shaft, the angle steels 11 at the upper end and the lower end are all arc-shaped, the plurality of reinforcing ribs 13 are angle steels 11 vertically located inside the arc-shaped frame, and two ends of the angle steels 11 are respectively connected with the upper end and the lower end, the arc-shaped steel plate 12 is connected to an arc-shaped side surface of the arc-shaped frame, which is close to an inner wall of the shaft, and the connecting member 2 is located inside the arc-shaped steel plate 12 to form an internal connection type shaft structure. This shaft structure is assembled by a plurality of arc frames each other's concatenation and forms, and stiffening rib 13 has played the effect of strengthening the structural strength of arc frame.

Preferably, the number of the angle steels 11 is four, the length of the angle steels 11 at the upper end and the lower end is longer, the length of the angle steels 11 at the left end and the right end is shorter, the angle steels are rectangular in front view and arc-shaped in top view, and the arc shape of the angle steels is matched with that of the shaft. And 12 reinforcing ribs 13 are arranged on the group of arc-shaped frames.

In some embodiments, referring to fig. 1 to 12, the arc-shaped plate 1 includes a plurality of angle steels 11, an arc-shaped steel plate 12 and a plurality of reinforcing ribs 13, the plurality of angle steels 11 are connected end to form a closed arc-shaped frame adapted to an arc shape of the shaft, the angle steels 11 at the upper end and the lower end are all arc-shaped, the plurality of reinforcing ribs 13 are angle steels 11 vertically located inside the arc-shaped frame, and two ends of the angle steels 11 are respectively connected with the upper end and the lower end, the arc-shaped steel plate 12 is connected to an arc-shaped side surface of the arc-shaped frame far away from an inner wall of the shaft, and the connecting member 2 is located outside the arc-shaped steel plate 12 to form an externally-connected shaft structure. The structure of outer joint formula and inner joint formula is the same, but the camber direction of angle steel 11 is different, and the setting position of arc steel sheet 12 is different, and the inner joint is exactly at shaft structure internally mounted connection, and the outer joint is exactly at shaft structure externally mounted connection, and above two kinds of forms are all applicable shaft structure, will use rationally according to specific actual conditions in actual construction. When the external connection type shaft structure is used, an installation gap is required to be formed between the outer wall of the shaft structure and the wall of the shaft, so that the installation operation is convenient.

12 first mounting holes 4 are uniformly distributed at the upper end and the lower end of the arc-shaped frame, and 3 first mounting holes 4 are respectively arranged at the left end and the right end.

In order to fix the shaft structure to the bottom of the shaft and enhance the stability, in some embodiments, referring to fig. 1 to 12, the bottom end of the arc-shaped frame at the bottom end of the shaft structure is connected with a fixing cone 7, and the fixing cone 7 is adapted to penetrate into the ground at the bottom of the shaft to fix the arc-shaped frame. The fixed cone 7 is conical, the bottom end of the fixed cone is pointed, and the fixed cone can be inserted into the underground or other objects, so that the arc-shaped frame is fixed firmly, and the vertical shaft structure is not easy to move in the vertical shaft.

Specifically, the fixed cones 7 are a plurality of and are uniformly distributed at the bottom end of the arc-shaped frame at intervals.

In order to realize positioning and alignment of adjacent arc-shaped frames in the height direction and facilitate accurate installation, in some embodiments, please refer to fig. 1 to 12, on a group of arc-shaped frames, a protrusion 8 is disposed at the bottom end of an angle steel 11 at the lower end, a groove 9 is disposed at the top end of the angle steel 11 at the upper end, and in the height direction of the shaft, the protrusion 8 and the groove 9 on two adjacent arc-shaped frames are inserted and connected in an adaptive manner to position the installation position of the arc-shaped frames. The top of arc frame is recess 9, and the bottom is arch 8, and arch 8 and recess 9 match each other, and upper and lower arc frame can align each other through arch 8 and recess 9 and connect, and then waterproof sealing pad 5 is located between recess 9 and the arch 8, does not also influence sealed effect.

Specifically, the grooves 9 and the protrusions 8 are formed in a trapezoidal shape, and the protrusions 8 can be inserted into the grooves 9, so that the waterproof gasket 5 is extruded to be in a broken line shape, and the shape of the waterproof gasket is consistent with that of the grooves 9 or the protrusions 8.

In order to enable the working personnel to rest, look at, or stop on the spiral staircase 3, in some embodiments, referring to fig. 1 to 12, the spiral staircase 3 further comprises a landing 35 connected to the plurality of main frames 32, the landing 35 having a flat shape and being located between two adjacent stair treads 33 near the middle of the spiral staircase 3. The staff can be on landing 35 the rest of standing a foot, and landing 35 welded connection is on main skeleton 32, connects stably, convenient to use.

The utility model discloses mainly as the bearing structure of the wall of a well, also can regard as the template of the compound wall of a well to use, compare in traditional structure, this structure can provide higher bearing capacity to can provide load as strutting the template, bearing structure that can significantly reduce, this structural installation is simple and convenient, has reduced the engineering time, has reduced erection equipment's use, has reduced construction cost.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A fast-assembly shaft structure is characterized by comprising a plurality of arc-shaped plates which are sequentially detachably connected end to end and enclose a closed round shape, wherein the round shape enclosed by the arc-shaped plates is defined as a one-layer structure, a multi-layer structure is arranged in a laminated manner in the height direction of a shaft, adjacent two layers of structures are detachably connected with each other, and the connection positions of the arc-shaped plates on the adjacent two layers of structures are arranged in a staggered manner in the height direction of the shaft;

2. The quick-mounting type shaft structure according to claim 1, wherein a plurality of first mounting holes are uniformly distributed on the periphery of the arc-shaped plate pieces, the first mounting holes on two adjacent arc-shaped plate pieces are arranged in an aligned manner, and the plurality of connecting pieces are respectively and correspondingly inserted into the plurality of adjacent first mounting holes in an aligned manner and lock the two adjacent arc-shaped plate pieces.

3. The quick-mounting type shaft structure according to claim 2, wherein a waterproof gasket is arranged between two adjacent arc-shaped plates, a plurality of second mounting holes are uniformly distributed on the waterproof gasket, and the second mounting holes are aligned with the first mounting holes and are used for inserting the connecting piece.

4. The fast-assembling type shaft structure of claim 1, wherein the spiral staircase comprises a plurality of cantilever beams, a plurality of main frameworks and a plurality of stair boards, one end of each cantilever beam is connected to the inner wall of the arc-shaped sheet of the one-layer or multi-layer structure, the plurality of cantilever beams are spirally arranged, the plurality of main frameworks are spirally connected to the upper ends of the plurality of cantilever beams, and the plurality of stair boards are spirally connected end to end in sequence and are connected to the upper ends of the plurality of main frameworks to form the staircase structure.

5. The quick-mounting type shaft structure as claimed in claim 4, wherein a plurality of anchor rods are inserted into the inner wall of the shaft, the outer ends of the anchor rods penetrate through the arc-shaped plate and extend to the inner side of the arc-shaped plate, and a plurality of cantilever beams are connected to the anchor rods and supported by the anchor rods.

6. The fast-assembling type shaft structure of claim 1, wherein the arc-shaped plate comprises a plurality of angle steels, arc-shaped steel plates and a plurality of reinforcing ribs, the angle steels are connected end to form a closed arc-shaped frame matched with the shaft arc, the angle steels at the upper end and the lower end are both arc-shaped, the reinforcing ribs are vertically positioned in the arc-shaped frame, the two ends of the angle steels are respectively connected with the upper end and the lower end, the arc-shaped steel plates are connected to arc-shaped side surfaces, close to the inner wall of the shaft, of the arc-shaped frame, and the connecting pieces are positioned on the inner sides of the arc-shaped steel plates to form the internal connection type shaft structure.

7. The fast-assembling shaft structure of claim 1, wherein the arc-shaped plate comprises a plurality of angle steels, arc-shaped steel plates and a plurality of reinforcing ribs, the angle steels are connected end to form a closed arc-shaped frame matched with the shaft arc, the angle steels at the upper end and the lower end are both arc-shaped, the reinforcing ribs are vertically positioned in the arc-shaped frame, the two ends of the angle steels are respectively connected with the upper end and the lower end, the arc-shaped steel plates are connected to the arc-shaped side surfaces, far away from the inner wall of the shaft, of the arc-shaped frame, and the connecting pieces are positioned on the outer sides of the arc-shaped steel plates to form the externally-connected shaft structure.

8. A quick-fit shaft structure as claimed in claim 6, wherein the bottom end of the curved frame at the bottom end of the shaft structure is connected to a fixing cone adapted to penetrate the ground at the bottom of the shaft to fix the curved frame.

9. The quick-mounting type shaft structure as claimed in claim 6, wherein a set of the arc-shaped frames is provided with a protrusion at the bottom end of the angle steel at the lower end and a groove at the top end of the angle steel at the upper end, and the protrusions and the grooves on two adjacent arc-shaped frames are inserted in the shaft height direction in a matching manner so as to position the installation positions of the arc-shaped frames.

10. The ready-to-assemble shaft structure according to claim 4, wherein the spiral staircase further comprises a landing connected to the plurality of backbones, the landing having a flat shape and being positioned between two adjacent landing plates adjacent to a middle portion of the spiral staircase.