CN216102705U - Steel support tool with adjustable height - Google Patents

Abstract

The utility model relates to a height-adjustable steel support tool, which comprises a support column for supporting a ship body section, a steel support for limiting the support column and a support seat for adjusting the height of the support column, wherein a limiting sleeve for limiting the support column is arranged in the center of the steel support, the support seat is fixed at the bottom of the steel support, the support column penetrates through the limiting sleeve and is arranged above the support seat, and the support column can move up and down in the limiting sleeve by adjusting the height of the support seat. The utility model overcomes the defect that the height of the steel support tool is not adjustable, and saves production resources; the height of the supporting seat is adjusted on the ground, so that high-altitude operation is avoided, labor input is reduced, the hook loosening time of the crane during carrying of the ship subsection assembly is shortened, and meanwhile production efficiency is improved.

Description

Steel support tool with adjustable height

Technical Field

The utility model relates to the field of ship subsection assembly and carrying, in particular to a steel support tool with adjustable height.

Background

In the modern shipbuilding industry, the ship building process can be roughly divided into segment fabrication, pre-outfitting, coating, total assembly and undocking. The overall assembly carrying level has important influence on shortening the construction period of the ship, reducing the construction cost and improving the working conditions of workers. When the ship body section is assembled and carried, a steel support tool needs to be arranged, and the section is temporarily fixed through the steel support tool.

As the fore-aft line of the ship is large, and the height of the bottom surface supporting points of the ship body segments is not fixed, the arrangement height of the required supporting seat is not fixed, and the height of the required steel support is different, a steel support tool suitable for the bottom surface supporting points of different ship body segments needs to be manufactured, so that the improvement of the production efficiency is not facilitated, and the waste of production resources is also caused.

Moreover, when the steel support height is not matched with the support seat arrangement height, the support seat is generally arranged in height by temporarily adding a section of circular tube between the steel support and the support seat, and the mode has high-altitude operation and safety risk; meanwhile, the operation is needed by a plurality of people, and the efficiency is low.

SUMMERY OF THE UTILITY MODEL

Aiming at the existing problems, the utility model provides a steel support tool with adjustable height, which solves the problems that the height of the steel support tool cannot be adjusted, production resources are wasted and the like.

The technical scheme of the utility model is realized as follows:

the utility model discloses a height-adjustable steel support tool, which comprises a support column for supporting a ship body section, a steel support for limiting the support column and a support seat for adjusting the height of the support column, wherein a limiting sleeve for limiting the support column is arranged in the center of the steel support, the support seat is fixed at the bottom of the steel support, the support column penetrates through the limiting sleeve and is arranged above the support seat, and the support column can move up and down in the limiting sleeve by adjusting the height of the support seat.

Preferably, the supporting seat comprises a plurality of height-adjustable supporting structures, and the supporting structures are symmetrically distributed on two sides of the supporting column.

Preferably, the supporting structure comprises a screw, a screw sleeve and a round sleeve base for supporting the screw sleeve, the screw sleeve is sleeved on the outer side of the screw, and the height of the supporting structure is adjusted through the thread fit between the screw and the screw sleeve; the round sleeve base is of a hollow structure and fixed at the lower end of the screw sleeve, and the screw penetrates into the hollow structure of the round sleeve base through penetrating out of the lower end of the screw sleeve.

Preferably, the lower extreme of screw rod is equipped with spacing backing plate, spacing backing plate is located in the hollow structure of circle sleeve pipe base, just the diameter of spacing backing plate is more than or equal to the internal diameter of screw rod cover, through spacing backing plate with the cooperation of screw rod cover is with spacing the screw rod.

Preferably, two torsion bars are symmetrically arranged on the outer side of the screw, and the two torsion bars are located between the screw cap and the screw sleeve of the screw when the height of the supporting structure is not adjusted.

Preferably, the lower extreme of support column is equipped with the connecting steel plate, the upper end of supporting seat is fixed the lower surface of connecting steel plate.

Preferably, the steel shotcrete is the steel construction of regular quadrangular frustum pyramid shape, the steel shotcrete still includes the landing slab, down the landing slab and by the angle steel welding form first horizontal frame second horizontal frame, first horizontal frame with second horizontal frame locates in proper order the landing slab with down between the landing slab, go up the landing slab first horizontal frame second horizontal frame with through steel shotcrete outside frame attach between the landing slab.

Preferably, the limiting sleeve is fixed on the upper platform plate, and a circular sleeve toggle plate is welded at the joint of the limiting sleeve and the upper platform plate.

Preferably, the first horizontal frame is symmetrically provided with two square steels for inserting and carrying fork teeth of a forklift, the two square steels are fixed on angle steel of the first horizontal frame, and the distance between the inner edges of the two square steels and the outer side of the supporting column is 20-30 mm.

Preferably, a channel steel structure used for limiting the supporting column is arranged in the second horizontal frame, the bottom of the channel steel structure is connected with the bottom of an angle steel of the second horizontal frame in a welding mode, and the distance between the inner edge of the channel steel structure and the outer side of the supporting column is 10-30 mm.

Compared with the prior art, the utility model has the following advantages:

according to the steel support tool, the supporting column can move up and down in the limiting sleeve by adjusting the height of the supporting seat, so that the defect that the height of the steel support tool is not adjustable is overcome, and production resources are saved; the height of the supporting seat is adjusted on the ground, so that high-altitude operation is avoided, labor input is reduced, the hook releasing time of a crane during the overall assembly and carrying of the ship sections is shortened, and meanwhile, the production efficiency is improved; the steel support tool is simple in design, high in flexibility and low in manufacturing cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of an adjustable support seat according to the present invention;

FIG. 2 is a front view of the steel support tool with an adjustable support seat height of 200mm according to the present invention;

FIG. 3 is a side view of the steel support tool when the height of the adjustable support seat is 200mm according to the utility model;

FIG. 4 is a detail view in the direction A-A of the front view of the steel support tool of the present invention;

FIG. 5 is a detail view in the direction B-B of the front view of the steel support tool of the present invention;

FIG. 6 is a detail view in the direction C-C of the front view of the steel support tool of the present invention;

FIG. 7 is a front view of the steel support tool with the adjustable support seat height of 520mm according to the present invention.

The attached drawings are as follows:

1. a supporting seat; 2. supporting steel; 3. a support pillar; 4. a support structure; 21. an upper deck plate; 22. A first horizontal frame; 23. a second horizontal frame; 24. a lower deck plate; 25. a steel-supported outer frame; 26. a limiting sleeve; 261. a circular sleeve toggle plate; 27. square steel; 28. a channel steel structure; 31. connecting steel plates; 41. a screw; 42. a screw sleeve; 43. a limiting base plate; 44. a circular sleeve base; 45. a torsion bar;

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 2 and 3, the height-adjustable steel support tool provided by the utility model comprises a support column 3 for supporting a ship body section, a steel support 2 for limiting the support column 3, and a support base 1 for adjusting the height of the support column 3, wherein a limiting sleeve 26 for limiting the support column 3 is arranged in the center of the steel support 2, the support base 1 is fixed at the bottom of the steel support 2, the support column 3 passes through the limiting sleeve 26 and is arranged above the support base 1, and the support column 3 can move up and down in the limiting sleeve 26 by adjusting the height of the support base 1.

The method comprises the following specific operations: transferring the height-adjustable steel support tool to a specified position according to the overall assembly carrying requirement of the sections; hoisting the sections to a steel support tool arrangement area by using a crane, wherein the crane cannot release the hook before the height of the steel support tool is not adjusted in place; the supporting column 3 of the steel supporting tool is slowly adjusted to a specified height by using a jack so that the supporting column 3 moves up and down in the limiting sleeve 26; adjusting the height of the supporting seat 1, and withdrawing the jack when the height of the supporting seat 1 is adjusted to the adjusting height of the jack; at this time, the crane slowly discharges the force until the bottom of the hull section comes into contact with the upper end of the support column 3.

When the higher hull section of bottom surface strong point needs to be supported, support column 3 through using the jack with the steel shotcrete frock slowly jacks to appointed height to make support column 3 upwards move to appointed height in spacing sleeve 26, upwards adjust the height of supporting seat 1 this moment, when the high jacking height of jack that rises to of supporting seat 1, withdraw from the jack.

When needing to resume the height of supporting seat 1 when supporting the lower hull segmentation of bottom surface strong point, through using the jack with the support column 3 of steel shotcrete frock slowly jacking to a take the altitude, make support column 3 temporarily rebound in stop collar 26, can adjust the height of supporting seat 1 downwards this moment, when the height of supporting seat 1 reduces to appointed height, the jack is withdrawn from this moment with the support column 3 of steel shotcrete frock slowly rebound to supporting seat 1 can stabilize support column 3.

The limiting sleeve 26 for limiting the supporting column 3 is arranged in the center of the steel support 2, and the supporting column 3 penetrates through the limiting sleeve 26 in the center of the steel support 2, so that the supporting column 3 is prevented from shaking left and right in the process of slowly adjusting the supporting column 3 to the specified height by using a jack; because the support column 3 passes through the limiting sleeve 26 and is arranged above the supporting seat 1, when the supporting seat 1 is adjusted to a specified height, the supporting seat 1 plays a role in supporting the support column 3 left and right, so that the support column 3 stably supports the hull section.

The further improvement lies in that the supporting seat 1 comprises a plurality of supporting structures 4 with adjustable height, and the supporting structures 4 are symmetrically distributed on two sides of the supporting column 3.

As shown in fig. 2 and 7, since the heights of the bottom supporting points of the ship body segments are not fixed, the heights of the supporting seats 1 need to be adjusted so that the supporting columns 3 support the ship body segments at different positions, in this embodiment, when the heights are not adjusted, the heights of the supporting seats 1 are 200mm, when the height range of the supporting seats 1 needing to be adjusted is 200-; when the height range of the supporting seat 1 to be adjusted is 400-520, four supporting structures 4 with adjustable heights can be adopted, stacked two by two and symmetrically distributed on two sides of the supporting column 3; therefore, the minimum value of the height adjustment of the supporting seat 1 is 200mm, and the maximum value is 520 mm.

The further improvement is that the supporting structure 4 comprises a screw 41, a screw sleeve 42 and a round sleeve base 44 for supporting the screw sleeve 42, the screw sleeve 42 is sleeved outside the screw 41, and the height of the supporting structure 4 is adjusted through the thread fit between the screw 41 and the screw sleeve 42; the round sleeve base 44 is a hollow structure, the round sleeve base 44 is fixed at the lower end of the screw sleeve 42, and the screw 41 penetrates through the hollow structure of the round sleeve base 44 by penetrating out of the lower end of the screw sleeve 42.

In this embodiment, as shown in fig. 1, the screw threads of the screw 41 and the screw sleeve 42 are of the same specification standard, so the screw sleeve 42 can be sleeved outside the screw 41, and because the lower end of the screw sleeve 42 is fixed at the bottom of the steel support 2 through the circular sleeve base 44, the screw sleeve 42 is fixed, when the screw 41 is rotated, the height of the support structure 4 is adjusted through the screw fit between the screw 41 and the screw sleeve 42, when the height of the support structure 4 is adjusted to a specified height, the screw 41 penetrating through the screw 41 in the screw sleeve 42 is fixed through the screw engagement between the screw 41 and the screw sleeve 42, and at this time, the height of the support structure 4 is also kept fixed so that the support pillar 3 can stably support the hull segment.

In this embodiment, as shown in fig. 1, the circular sleeve base 44 is a hollow structure, the screw 41 penetrates through the lower end of the screw sleeve 42 to penetrate into the hollow structure of the circular sleeve base 44, and the circular sleeve base 44 with the hollow structure not only provides a rigid fixing support for the screw sleeve 42, but also provides a passage for the screw 41 to rotate up and down.

The further improvement lies in that the lower end of the screw 41 is provided with a limit backing plate 43, the limit backing plate 43 is positioned in the hollow structure of the circular sleeve base 44, the diameter of the limit backing plate 43 is larger than or equal to the inner diameter of the screw sleeve 42, and the screw 41 is limited by the match of the limit backing plate 43 and the screw sleeve 42.

As shown in fig. 1, in order to avoid the screw 41 from separating from the screw sleeve 42 during the up-and-down rotation process, a limiting cushion plate 43 is arranged at the lower end of the screw 41, and when the diameter of the limiting cushion plate 43 is smaller than the inner diameter of the screw sleeve 42, the limiting cushion plate 43 is driven by the up-and-down rotation of the screw 41, and the limiting cushion plate 43 and the screw 41 separate from the screw sleeve 42 together, so that the support structure 4 cannot play a supporting role; when the diameter of the limiting cushion plate 43 is equal to the inner diameter of the screw sleeve 42, the limiting cushion plate 43 cannot be separated from the upper end of the screw sleeve 42 under the resistance action of the screw thread because the screw thread is arranged in the screw sleeve 42, so that the limiting screw 41 is separated from the screw sleeve 42; when the diameter of the limit shim plate 43 is set to be larger than the inner diameter of the screw sleeve 42, the limit shim plate 43 cannot be separated from the upper end of the screw sleeve 42 under the action of resistance between the limit shim plate 43 and the screw sleeve 42, so that the limit screw 41 is separated from the screw sleeve 42; therefore, when the diameter of the limiting shim plate 43 is set to be greater than or equal to the inner diameter of the screw sleeve 42, the screw 41 can be prevented from being separated from the screw sleeve 42 in the up-and-down rotation process under the limiting effect of the limiting shim plate.

Because the limit backing plate 43 is positioned in the hollow structure of the circular sleeve base 44, the limit backing plate 43 can freely move up and down in the hollow structure of the circular sleeve base 44 under the driving of the screw rod 41 rotating up and down;

the further improvement is that two torsion bars 45 are symmetrically arranged outside the screw 41, and the two torsion bars 45 are positioned between the screw cap of the screw 41 and the screw sleeve 42 when the supporting structure 4 is not adjusted in height.

In the embodiment, as shown in fig. 1, since the two torsion bars 45 are symmetrically fixed on the outer side of the screw 41, the two torsion bars 45 rotate left and right around the screw 41 to rotate the screw 41 in the screw housing 42, so as to adjust the height of the supporting structure 4, in order to prevent interference between the screw 41 and the screw housing 42; the two torsion bars 45 can only be arranged between the screw cap at the upper end of the screw 41 and the screw housing 42 when the support structure 4 is not adjusted in height.

The further improvement lies in that the lower end of the support column 3 is provided with a connecting steel plate 31, and the upper end of the support seat 1 is fixed on the lower surface of the connecting steel plate 31.

In this embodiment, because the upper end of supporting seat 1 and the lower extreme of support column 3 are connected through connecting steel plate 31, consequently high regulation at supporting seat 1 is to appointed height, and when the loop wheel machine slowly placed the hull segmentation to the upper end of support column 3, can judge whether need continue to adjust supporting seat 1 to the tight connecting steel plate 31 of subsides through whether the upper end of checking supporting seat 1 is connected with connecting steel plate 31 of support column 3 lower extreme, if exist and leave empty, need continue to adjust supporting seat 1 to the tight connecting steel plate 31 of subsides, until the loop wheel machine unloads the power completely.

The further improvement lies in that the steel support 2 is a steel structure with a regular quadrangular frustum pyramid shape, the steel support 2 further comprises an upper platform plate 21, a lower platform plate 24, a first horizontal frame 22 and a second horizontal frame 23 which are formed by welding angle steel, the first horizontal frame 22 and the second horizontal frame 23 are sequentially arranged between the upper platform plate 21 and the lower platform plate 24, and the upper platform plate 21, the first horizontal frame 22, the second horizontal frame 23 and the lower platform plate 24 are connected through a steel support outer side frame 25.

In this embodiment, the regular quadrangular frustum pyramid shaped steel support 2 formed by welding steel plates and angle steels has higher structural stability and structural strength, and the support column 3 is limited by the upper platform plate 21, the lower platform plate 24, the first horizontal frame 22 and the second horizontal frame 23, so that the support column 3 can stably support the ship body segment.

The further improvement is that the limit sleeve 26 is fixed on the upper platform plate 21, and a round sleeve elbow plate 261 is welded at the joint of the limit sleeve 26 and the upper platform plate 21.

In this embodiment, as shown in fig. 2 and 4, since the limiting sleeve 26 is disposed on the upper deck 21, the supporting column 3 is limited by the limiting sleeve 26, so that the problem that the ship body segment cannot be stably supported due to the left-right shaking of the supporting column 3 is avoided; because the connecting part of the limiting sleeve 26 and the upper platform plate 21 is welded with the circular sleeve elbow plate 261, the limiting sleeve 26 is rigidly reinforced through the circular sleeve elbow plate 261.

The further improvement is that the first horizontal frame 22 is symmetrically provided with two square steels 27 for inserting and carrying fork teeth of a forklift, the two square steels 27 are fixed on angle steel of the first horizontal frame 22, and the distance between the inner edges of the two square steels 27 and the outer side of the supporting column 3 is 20-30 mm.

In this embodiment, as shown in fig. 2 and 5, since the height-adjustable steel support tooling needs to be transported to a specified position according to the total assembly and carrying requirements of the segments, the first horizontal frame 22 is symmetrically provided with the two square steels 27, and the two square steels 27 are inserted through the fork teeth of the forklift so as to move the steel support tooling; in order to facilitate the insertion of the fork teeth of the forklift into the two square steels 27, the two square steels 27 are fixed on the angle steel of the first horizontal frame 22, and in order to meet the requirement of the distance between the two fork teeth of the forklift, the distance between the inner edges of the two square steels 27 and the outer side of the supporting column 3 is not less than 20 mm; in order to limit the supporting column 3, the distance between the inner edges of the square steels 27 and the outer side of the supporting column 3 is not more than 30 mm; therefore, the preferred distance between the inner edges of the square steels 27 and the outside of the supporting column 3, respectively, is 20-30 mm.

The further improvement lies in that a channel steel structure 28 used for limiting the supporting column 3 is arranged in the second horizontal frame 23, the channel steel structure 28 is connected with the angle steel of the second horizontal frame 23 in a welding mode, and the distance between the inner edge of the channel steel structure 28 and the outer side of the supporting column 3 is 10-30 mm.

In this embodiment, as shown in fig. 2 and fig. 6, a channel steel structure 28 is disposed in the second horizontal frame 23, and the channel steel structure 28 is a closed structure, and is sleeved outside the supporting column 3 to limit the supporting column 3; unnecessary manufacturing cost can be saved by welding and connecting the bottom of the channel steel structure 28 with the bottom of the angle steel of the second horizontal frame 23, and in order to avoid blocking the support column 3 from moving up and down, the distance between the inner edge of the channel steel structure 28 and the outer side of the support column 3 is at least 10 mm; in order to limit the supporting columns, the distance between the inner edge of the channel steel structure 28 and the outer side of the supporting column 3 is not more than 30 mm; the preferred distance between the inner edge of the channel structure 28 and the outside of the support column 3 is therefore 10-30 mm.

In conclusion, the steel support tool disclosed by the utility model has the advantages that the supporting column can move up and down in the limiting sleeve by adjusting the height of the supporting seat, so that the defect that the height of the steel support tool is not adjustable is overcome, and the production resource is saved; the height of the supporting seat is adjusted on the ground, so that high-altitude operation is avoided, labor input is reduced, the hook releasing time of a crane during the overall assembly and carrying of the ship sections is shortened, and meanwhile, the production efficiency is improved; the steel support tool is simple in design, high in flexibility and low in manufacturing cost.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. A steel support tool with adjustable height is characterized in that,

including support column (3) that is used for supporting the hull segmentation, be used for spacingly steel shotcrete (2) of support column (3) and be used for adjusting support seat (1) of support column (3) height, the center of steel shotcrete (2) is equipped with and is used for spacingly spacing sleeve pipe (26) of support column (3), support seat (1) is fixed the bottom of steel shotcrete (2), support column (3) pass spacing sleeve pipe (26) are established support seat (1) top, through adjusting the height of support seat (1) so that support column (3) can reciprocate in spacing sleeve pipe (26).

2. The height adjustable steel support tool of claim 1,

the supporting seat (1) comprises a plurality of supporting structures (4) with adjustable heights, and the supporting structures (4) are symmetrically distributed on two sides of the supporting column (3).

3. The height adjustable steel support tool of claim 2,

the supporting structure (4) comprises a screw rod (41), a screw rod sleeve (42) and a circular sleeve base (44) for supporting the screw rod sleeve (42), the screw rod sleeve (42) is sleeved on the outer side of the screw rod (41), and the height of the supporting structure (4) is adjusted through threaded matching between the screw rod (41) and the screw rod sleeve (42); the round sleeve base (44) is of a hollow structure, the round sleeve base (44) is fixed to the lower end of the screw rod sleeve (42), and the screw rod (41) penetrates into the hollow structure of the round sleeve base (44) through penetrating out of the lower end of the screw rod sleeve (42).

4. The height adjustable steel support tool of claim 3,

the lower extreme of screw rod (41) is equipped with spacing backing plate (43), spacing backing plate (43) are located in the hollow structure of circle sleeve pipe base (44), just the diameter of spacing backing plate (43) is more than or equal to the internal diameter of screw rod cover (42), through spacing backing plate (43) with the cooperation of screw rod cover (42) is with spacing screw rod (41).

5. The height adjustable steel support tool of claim 3,

two torsion bars (45) are symmetrically arranged on the outer side of the screw (41), and the two torsion bars (45) are positioned between a screw cap of the screw (41) and the screw sleeve (42) when the height of the supporting structure (4) is not adjusted.

6. The height adjustable steel support tool of claim 1,

the lower extreme of support column (3) is equipped with connecting steel sheet (31), the upper end of supporting seat (1) is fixed the lower surface of connecting steel sheet (31).

7. The height adjustable steel support tool of claim 1,

steel shotcrete (2) are the steel construction of positive quadrangular frustum pyramid shape, steel shotcrete (2) still include landing deck (21), lower landing deck (24) and first horizontal frame (22), second horizontal frame (23) that form by the angle steel welding, first horizontal frame (22) with second horizontal frame (23) are located in order last landing deck (21) with between lower landing deck (24), go up landing deck (21) first horizontal frame (22) second horizontal frame (23) with connect through steel shotcrete outside frame (25) between lower landing deck (24).

8. The height adjustable steel support tool of claim 7,

spacing sleeve pipe (26) are fixed go up on the landing slab (21), just spacing sleeve pipe (26) with it has circular sleeve pipe bracket (261) to go up the welding of landing slab (21) junction.

9. The height adjustable steel support tool of claim 7,

the fork of fork truck inserts the both sides steel (27) of carrying on first horizontal frame (22) symmetry is equipped with, both sides steel (27) are fixed on the angle steel of first horizontal frame (22), and the distance between the inner edge of both sides steel (27) respectively with support column (3) outside is 20-30 mm.

10. The height adjustable steel support tool of claim 7,

the second horizontal frame (23) is internally provided with a channel steel structure (28) used for limiting the supporting column (3), the bottom of the channel steel structure (28) is connected with the bottom of an angle steel of the second horizontal frame (23) in a welding mode, and the distance between the inner edge of the channel steel structure (28) and the outer side of the supporting column (3) is 10-30 mm.

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