Height-adjustable steel pipe concrete supporting column

Abstract

The utility model discloses a height adjustable type steel pipe concrete supporting column which comprises an upper pipe joint, a lower pipe joint and an adjusting assembly, the upper pipe joint and the lower pipe joint are coaxially arranged, the lower portion of the upper pipe joint and the upper portion of the lower pipe joint are mutually nested, and the adjusting assembly comprises a top ring plate and an outer ring plate. The top ring plate is fixedly installed on the lower pipe joint, the outer ring plate is fixedly installed on the upper pipe joint, and the top ring plate and the outer ring plate can be driven to be close to or away from each other. According to the height-adjustable concrete-filled steel tube supporting column, the upper pipe joint and the lower pipe joint are mutually inserted and nested, and are matched with the adjusting assembly for use, so that the height of the steel tube is adjustable before concrete pouring, and the supporting column is better in integrity and higher in bending resistance and shearing resistance after concrete pouring.

Description

Technical Field

[0001] The utility model belongs to the technical field of underground protection and support engineering and mining engineering, and relates to a height-adjustable steel tube concrete supporting column. Background Art

[0002] The construction environment of underground projects and mining areas is complex, with multiple safety risk factors, such as roof collapse and poor geological conditions. These risk factors pose a threat to the safety of construction workers. Therefore, the construction of underground projects and mining areas requires high-level technical support, among which how to provide effective support is also a key point.

[0003] Concrete-filled steel tubes (CFST) are a structural form that combines steel tubes with concrete, leveraging the advantages of both materials. Due to its high bearing capacity and large deformation capacity, CFST is increasingly being used as support structures in underground projects and mining areas. However, due to limited underground space, the steel tubes used in CFST are difficult to transport and flip, and the height of the tubes often fails to meet support height requirements. Therefore, a steel plate must be placed above the CFST to achieve the required support height. While this support structure meets the required height, its integrity is poor, resulting in poor structural strength and overall bending and shear resistance.

[0004] To solve the above problems, a height-adjustable support structure is needed to meet different construction requirements while having good bending and shear resistance. Utility Model Content

[0005] In view of this, the utility model provides a height-adjustable steel tube concrete support column, in which the upper tube section and the lower tube section are plugged into and nested with each other, and the use of adjustment components ensures that the height of the steel tube can be adjusted before concrete pouring. After concrete pouring, the support column has better integrity and stronger bending and shear resistance.

[0006] The utility model discloses a height-adjustable steel tube concrete supporting column, comprising an upper tube section, a lower tube section and an adjusting assembly, wherein the upper tube section and the lower tube section are coaxially arranged, and the lower part of the upper tube section and the upper part of the lower tube section are nested with each other, and the adjusting assembly comprises a top ring plate and an outer ring plate, wherein the top ring plate is fixedly mounted on the lower tube section, and the outer ring plate is fixedly mounted on the upper tube section, and the top ring plate and the outer ring plate can be driven to move closer to or away from each other to adjust the overlapping and nesting length of the upper tube section and the lower tube section.

[0007] Furthermore, the lower part of the upper pipe section is inserted into the upper part of the lower pipe section, and the top ring plate and the outer ring plate are both radially closed annular structures. The top ring plate is coaxially fixed to the top of the lower pipe section, and the outer ring plate is fixed to the outer wall surface of the upper pipe section. The outer ring plate is arranged parallel to the top ring plate.

[0008] Furthermore, the wall thickness of the upper pipe section is not less than the wall thickness of the lower pipe section, and the insertion depth of the upper pipe section is not less than 100 mm.

[0009] Furthermore, the inner diameter of the lower pipe section is greater than the outer diameter of the upper pipe section, and the difference between the inner diameter of the lower pipe section and the outer diameter of the upper pipe section is 5-100 mm.

[0010] Furthermore, the inner diameter of the top ring plate is the same as the outer diameter of the upper pipe segment, and the outer diameter of the outer ring plate is the same as the outer diameter of the top ring plate.

[0011] Furthermore, the adjustment assembly further includes an adjustment screw and an adjustment nut, and the two ends of the adjustment screw are respectively and correspondingly penetrated through the top ring plate and the outer ring plate;

[0012] At least two adjusting nuts are provided, and the two adjusting nuts are installed on the adjusting screw by threaded fitting and are located between the top ring plate and the outer ring plate; the two adjusting nuts are respectively pressed against the top ring plate and the outer ring plate, and the two adjusting nuts can be driven closer to or away from each other, so that the top ring plate and the outer ring plate are closer to or away from each other.

[0013] Furthermore, it also includes a core column, which is arranged in the upper pipe section and the lower pipe section, and the core column is arranged to pass through in the axial direction.

[0014] Furthermore, concrete is integrally poured into the upper pipe section and the lower pipe section, and the grade of the concrete is not less than C30.

[0015] Furthermore, there are at least three adjusting screws evenly arranged along the circumferential direction, and the strength grade of the adjusting screws is 8.8, 10.9 or 12.9.

[0016] Beneficial effects of the utility model:

[0017] The utility model provides a height-adjustable steel tube concrete supporting column, in which the upper tube section and the lower tube section are plugged into and nested with each other, ensuring the height adjustment function of the supporting column, and the adjustment component realizes the adjustment of the nesting length of the upper tube section and the lower tube section, that is, the height adjustment of the overall steel tube concrete supporting column is realized, which better meets the requirements of different support heights and ensures the adjustable height of the steel tube before concrete pouring. After concrete pouring, the integrity of the supporting column is better and the bending and shearing resistance is stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of the utility model;

[0019] Figure 2 This is a structural diagram of Example 1 of the embodiment of the present utility model;

[0020] Figure 3 This is a structural diagram of Example 2 of the embodiment of the present utility model. DETAILED DESCRIPTION

[0021] It should be noted that, in the description of this specification, the terms "upper", "lower", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The upper and lower pipe sections in this embodiment are coaxially arranged, so the axial, circumferential and radial directions in this embodiment refer to the axial, circumferential and radial directions of the upper pipe section (lower pipe section).

[0022] As shown in the figure, the present invention discloses a height-adjustable steel tube concrete support column, comprising an upper tube segment 1, a lower tube segment 2, and an adjustment assembly 3. The upper tube segment 1 is coaxially arranged with the lower tube segment 2, and the lower portion of the upper tube segment 1 and the upper portion of the lower tube segment 2 are nested with each other. The adjustment assembly 3 includes a top ring plate 31 and an outer ring plate 32. The top ring plate 31 is fixedly mounted on the lower tube segment 2, and the outer ring plate 32 is fixedly mounted on the upper tube segment 1. The top ring plate 31 and the outer ring plate 32 can be driven to move closer to or away from each other to adjust the overlapping and nesting length of the upper tube segment 1 and the lower tube segment 2. In this embodiment, the lower portion of the upper tube segment 1 is plugged into the upper portion of the lower tube segment 2. The top ring plate 31 and the outer ring plate 32 are both radially closed annular structures. The top ring plate 31 is coaxially fixed to the top of the lower tube segment 2, and the outer ring plate 32 is fixed to the outer wall surface of the upper tube segment 1. The outer ring plate 32 is arranged parallel to the top ring plate 31. As shown in the figure, in this embodiment, the upper pipe section 1 is plugged into the lower pipe section 2, and then by adjusting the distance between the top ring plate 31 fixed to the upper pipe section 1 and the bottom ring plate fixed to the lower pipe section 2, the overlapping and nesting length of the upper pipe section 1 and the lower pipe section 2, that is, the insertion depth of the lower pipe section 2, is adjusted, thereby realizing the adjustment of the entire height to adapt to different construction height requirements. At the same time, the mutual plug-in and nested structure has a better integrity after pouring concrete 4, so that the structural strength of the final steel tube concrete 4 support column is higher, and it can withstand accidental bending moments, improve the bending and shearing resistance, make the support structure safer, and reduce construction risks. In this embodiment, as shown in the figure, the top ring plate 31 and the outer ring plate 32 are both radially closed annular structures, which can be regular annular structures, but can also be special-shaped rings. However, in actual construction, the use of the following is more common: Figure 2 The ring structure shown (this is example 1), or Figure 3The square ring structure shown (this is Example 2), whether it is the circular ring of Example 1 or the square ring of Example 2, is mainly determined by the structure of the upper tube segment 1 and the lower tube segment 2. If the upper tube segment 1 and the lower tube segment 2 are cylindrical steel pipes, the structure of Example 1 is adopted; if the upper tube segment 1 and the lower tube segment 2 are square cylindrical steel pipes, the structure of Example 2 is adopted. The top ring plate 31 is arranged parallel to the upper ring plate to make height adjustment easier.

[0023] In this embodiment, the wall thickness of the upper pipe section 1 is not less than the wall thickness of the lower pipe section 2, and the insertion depth of the upper pipe section 1 is not less than 100 mm. The upper pipe section 1 and the lower pipe section 2 are both steel pipes, which have a certain thickness. Since the upper pipe section 1 is inserted into the lower pipe section 2, the diameter of the upper pipe section 1 must be larger than the lower pipe section 2. In order to ensure that the overall structural strength of the support column after molding is high enough, it is necessary to limit the wall thickness of the upper pipe section 1. If the wall thickness of the upper pipe section 1 is smaller than the wall thickness of the lower pipe section 2, and the diameter of the upper pipe section 1 is not as large as the lower pipe section 2, the upper structural strength of the entire support column will be smaller than the lower part, affecting the normal use of the support column. In this embodiment, Figure 1 The insertion depth d shown is the length of the insertion and insertion of the upper pipe section 1 and the lower pipe section 2. Since the upper pipe section 1 and the lower pipe section 2 are split structures, if the insertion depth is too shallow, the structural strength at the overlap position of the two cannot meet the requirements.

[0024] In this embodiment, the inner diameter of the lower pipe section 2 is larger than the outer diameter of the upper pipe section 1, and the difference between the inner diameter of the lower pipe section 2 and the outer diameter of the upper pipe section 1 is 5-100 mm. In this embodiment, the inner diameter of the top ring plate 31 is the same as the outer diameter of the upper pipe section 1, and the outer diameter of the outer ring plate 32 is the same as the outer diameter of the top ring plate 31. Since the upper pipe section 1 and the lower pipe section 2 are both steel pipes, they have a certain thickness, so they must have an inner diameter and an outer diameter. This is understandable to those skilled in the art and will not be elaborated here. In this embodiment, if the difference between the inner diameter of the lower pipe section 2 and the outer diameter of the upper pipe section 1 is too small, it will be inconvenient to plug in. If the difference is too large, the diameter difference between the upper and lower parts of the support column will be too large. In this embodiment, the preferred difference is 25 mm or more.

[0025] In this embodiment, the adjustment assembly 3 also includes an adjusting screw 33 and an adjusting nut 34, and the two ends of the adjusting screw 33 are respectively correspondingly passed through the top ring plate 31 and the outer ring plate 32; at least two adjusting nuts 34 are provided, and the two adjusting nuts 34 are installed on the adjusting screw 33 by threaded fitting and are located between the top ring plate 31 and the outer ring plate 32; the two adjusting nuts 34 are respectively correspondingly abutted against the top ring plate 31 and the outer ring plate 32, and the two adjusting nuts 34 can be driven closer to or away from each other, so that the top ring plate 31 and the outer ring plate 32 are closer to or away from each other. As shown in the figure, in this embodiment, corresponding bolt holes are opened on the top ring plate 31 and the outer ring plate 32, and the adjusting screws 33 are respectively passed through the bolt holes on the top ring plate 31 and the outer ring plate 32. Two adjusting nuts 34 are set between the top ring plate 31 and the outer ring plate 32, one of which is against the bottom surface of the outer ring plate 32 and the other is against the top surface of the top ring plate 31. The upper pipe section 1 is axially overlapped on the lower pipe section 2 through the two adjusting nuts 34. Only by rotating the two adjusting nuts 34, the spacing between the two adjusting nuts 34 can be adjusted, thereby achieving the adjustment of the height of the support column. In this embodiment, in order to further connect the upper pipe section 1 and the lower pipe section 2, adjusting nuts 34 are also set at both ends of the adjusting rod, that is, the top ring plate 31 and the outer ring plate 32 are respectively clamped and fixed by the two adjusting nuts 34.

[0026] This embodiment further includes a core column 5, which is disposed within the upper and lower pipe sections 1 and 2 and extends axially therethrough. The core column 55 is a steel tube concrete 4 or a fiber tube concrete 4, preferably a fiber tube concrete 4 in this embodiment. The core column 5 further improves the integrity of the support column.

[0027] In this embodiment, concrete 4 is integrally poured into the upper pipe section 1 and the lower pipe section 2 , and the grade of the concrete 4 is not less than C30.

[0028] In this embodiment, at least three adjusting screws 33 are evenly arranged along the circumference, and the strength grade of the adjusting screws 33 is 8.8, 10.9, or 12.9. In this embodiment, the adjusting screws 33 in Example 1 have a strength grade of 10.9, are three in number, and are evenly arranged along the circumference of the steel pipe. In Example 2, the adjusting screws 33 have a strength grade of 8.8, are eight in number, and are evenly arranged along the circumference.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A height-adjustable concrete-filled steel tube support column, characterized in that: It includes an upper pipe section, a lower pipe section and an adjustment component. The upper pipe section is coaxially arranged with the lower pipe section, and the lower part of the upper pipe section and the upper part of the lower pipe section are nested with each other. The adjustment component includes a top ring plate and an outer ring plate. The top ring plate is fixedly installed on the lower pipe section, and the outer ring plate is fixedly installed on the upper pipe section. The top ring plate and the outer ring plate can be driven to move closer to or away from each other.

2. The height-adjustable concrete-filled steel tube support column according to claim 1, characterized in that: The lower part of the upper pipe section is inserted into the upper part of the lower pipe section. The top ring plate and the outer ring plate are both radially closed annular structures. The top ring plate is coaxially fixed to the top of the lower pipe section, and the outer ring plate is fixed to the outer wall surface of the upper pipe section. The outer ring plate is arranged parallel to the top ring plate.

3. The height-adjustable concrete-filled steel tube support column according to claim 2, characterized in that: The wall thickness of the upper pipe section is not less than the wall thickness of the lower pipe section, and the insertion depth of the upper pipe section is not less than 100 mm.

4. The height-adjustable concrete-filled steel tube support column according to claim 1, characterized in that: The inner diameter of the lower pipe section is greater than the outer diameter of the upper pipe section, and the difference between the inner diameter of the lower pipe section and the outer diameter of the upper pipe section is 5-100 mm.

5. The height-adjustable concrete-filled steel tube support column according to claim 4, characterized in that: The inner diameter of the top ring plate is the same as the outer diameter of the upper pipe section, and the outer diameter of the outer ring plate is the same as the outer diameter of the top ring plate.

6. The height-adjustable concrete-filled steel tube support column according to claim 2, characterized in that: The adjustment assembly further includes an adjustment screw and an adjustment nut, and the two ends of the adjustment screw are respectively and correspondingly penetrated through the top ring plate and the outer ring plate; At least two adjusting nuts are provided, and the two adjusting nuts are installed on the adjusting screw by threaded fitting and are located between the top ring plate and the outer ring plate; the two adjusting nuts are respectively pressed against the top ring plate and the outer ring plate, and the two adjusting nuts can be driven closer to or away from each other, so that the top ring plate and the outer ring plate are closer to or away from each other.

7. The height-adjustable concrete-filled steel tube support column according to claim 1, characterized in that: It also includes a core column, which is arranged in the upper pipe section and the lower pipe section, and the core column is arranged to pass through in the axial direction.

8. The height-adjustable concrete-filled steel tube support column according to claim 1, characterized in that: Concrete is poured integrally into the upper pipe section and the lower pipe section.

9. The height-adjustable concrete-filled steel tube support column according to claim 6, characterized in that: There are at least three adjusting screws evenly arranged along the circumferential direction.

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