Steel column butt joint support frame and steel column butt joint construction method

Abstract

The present application relates to steel column butt joint support frame technical field, a kind of steel column butt joint support frame and steel column butt joint construction method, the lifting device includes with gear meshing connection for rotating adjusting assembly, the middle part of adjusting assembly is inserted with screw rod for up and down telescopic movement, the top end of screw rod is fixedly installed with the fixed component for being fixedly connected with upper steel column, the bottom end of screw rod is fixedly installed with the elastic telescopic support component for the fixation of screw rod. When the rotating shaft hand wheel drives rotating shaft to rotate, and under the meshing connection of bevel gear and bevel gear two, while under the meshing connection of gear and internal thread sleeve gear, four fixed rods welded on the upper end of four screw rods drive upper steel column to move upwards, the plug rod in the fixed column of screw lower end is separated from the fixation of insertion hole, when upper steel column hits against basement roof, compressed spring can make fixed column insert into insertion hole, so as to fix screw rod, and then the height of upper steel column is adjusted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel column butt joint support frame, in particular to a steel column butt joint support frame and a steel column butt joint construction method. BACKGROUND

[0002] When pouring the traditional basement roof, the steel pipe column butt joint support frame needs to be used to support the post-pouring belt part. The post-pouring belt part is supported by the steel pipe column support system before the post-pouring belt is closed. The steel pipe column is erected at the same time as the formwork frame before the roof concrete is poured.

[0003] The existing steel pipe column butt joint support frame is usually welded with two sections of steel pipe columns to support the basement roof according to the height of the basement roof to be poured, which is not convenient for adjusting the height of the steel pipe column butt joint support frame according to the use scene, and is not conducive to the use of the steel pipe column butt joint support frame. SUMMARY

[0004] To solve the problem of the existing steel pipe column butt joint support frame in the background art, which is usually welded with two sections of steel pipe columns to support the basement roof according to the height of the basement roof to be poured, which is not convenient for adjusting the height of the steel pipe column butt joint support frame according to the use scene, and is not conducive to the use of the steel pipe column butt joint support frame, the present application provides the following technical scheme:

[0005] A steel column butt joint support frame, comprising a bottom plate fixed on a cement ground, characterized in that: the top end of the bottom plate is fixedly installed with a lower steel column for supporting the basement roof, an upper steel column for supporting according to the height of the basement roof is arranged above the lower steel column, a lifting device for driving the upper steel column to extend up and down is arranged in the lower steel column, and a driving device for driving the lifting device to control the upper steel column to extend up and down is arranged in the lower steel column.

[0006] The driving device comprises a transmission shaft arranged in the lower steel column for rotation, and a gear for controlling the lifting device to drive the upper steel column to extend up and down is fixedly installed on the shaft body of the transmission shaft.

[0007] The lifting device comprises an adjusting assembly for rotation in meshing connection with the gear, and the adjusting assembly has four adjusting assemblies, the four adjusting assemblies are distributed in a circumferential array on the outside of the gear, a screw rod for extending up and down is inserted into the middle part of the adjusting assembly, a fixing assembly for fixedly connecting with the upper steel column is fixedly installed at the top end of the screw rod, and an elastic expansion support assembly for fixing the screw rod is fixedly installed at the bottom end of the screw rod.

[0008] Further, the adjusting assembly comprises an internally threaded sleeve gear in meshing connection with the gear, and the internally threaded sleeve gear is in screw connection with the screw rod, and a supporting rod is inserted into the wheel body of the internally threaded sleeve gear for supporting the internally threaded sleeve gear.

[0009] Further, the fixing assembly comprises a fixing ring sleeved on the rod body of the screw rod for moving up and down, a fixing rod for fixedly connecting with the upper steel column is fixedly installed on the ring body of the fixing ring, and the fixing rod is four, the four fixing rods are distributed in a circumferential array on the fixing ring, and the bottom ends of the four fixing rods are fixedly connected with the top end of the screw rod.

[0010] Further, the elastic telescopic supporting assembly comprises a sleeve ring sleeved on the shaft body of the transmission shaft for moving up and down, a fixing column for fixedly connecting with the upper and lower ends of the screw rod is fixedly installed on the ring body of the sleeve ring, an inserting rod for telescoping is arranged in the column cavity of the fixing column, and a spring for controlling the telescoping of the inserting rod in the column cavity of the fixing column is arranged in the column cavity of the fixing column.

[0011] Further, the bottom end of the transmission shaft is fixedly installed with a bevel gear two for driving the transmission shaft to rotate, the front side of the bevel gear two is provided with a bevel gear for meshing connection with the bevel gear two and driving the bevel gear two to rotate, the wheel body front end middle part of the bevel gear is inserted with a rotating shaft for driving the bevel gear to rotate, and the front end of the rotating shaft is fixedly installed with a hand wheel for driving the rotating shaft to rotate.

[0012] Further, the shaft body of the transmission shaft is provided with a supporting assembly for supporting the transmission shaft on the upper part, and a truncated cone for preventing the transmission shaft from being separated from the supporting assembly is fixedly installed at the top end of the transmission shaft.

[0013] Further, the supporting assembly comprises a circular ring sleeved on the shaft body of the transmission shaft, and a connecting rod for connecting with the inner wall of the upper steel column is fixedly installed on the ring body of the circular ring, and the connecting rod is four, and the four connecting rods are distributed in a circumferential array on the ring body of the circular ring.

[0014] Further, the column of the lower steel column is provided with an insertion hole for facilitating the fixation of the inserting rod, the column body of the lower steel column is provided with a through groove one for the up and down telescoping of the screw rod, and the column body of the lower steel column is provided with a groove one for facilitating the rotation of the transmission shaft, and the groove one is located directly below the through groove one.

[0015] Further, the inner wall of the cavity of the through slot one is fixedly installed with a fixed plate one for supporting the support rod, the inner wall of the cavity of the through slot one is fixedly installed with a fixed plate two for supporting the support rod, and the fixed plate two is located directly above the fixed plate one, and the plate body of the fixed plate two is provided with a cross connecting rod for movably connecting the upper steel column.

[0016] Further, the body of the upper steel column is provided with a through slot two for facilitating the up-down telescopic movement of the screw rod, and the size and groove depth of the through slot two are the same as those of the through slot one.

[0017] A steel column butt joint construction method of a steel column butt joint support frame, comprising the following steps:

[0018] Step one, first insert the transmission shaft into the body of the lower steel column, the shaft body of the transmission shaft is installed with a gear which rotates synchronously with the transmission shaft through key connection, the bottom end of the transmission shaft is connected with a bevel gear two through key connection, the rear end of the shaft is installed with a bevel gear in the cavity of the slot one and is meshed with the bevel gear two, and the front end of the shaft is welded with a hand wheel which can drive the shaft to rotate;

[0019] Step two, then, the sleeve ring is sleeved on the shaft body of the transmission shaft and placed in the cavity of the through slot one, four inserting rods are inserted into the corresponding four inserting holes respectively, four screw rods are distributed and welded at the top ends of the four fixed columns which are distributed in a circumferential array on the ring body of the sleeve ring, the fixed plate one and the inner wall of the through slot one are welded together, the fixed plate two is sleeved over the transmission shaft and the four screw rods, and the fixed plate two and the inner wall of the through slot one are welded together, the plate body top end of the fixed plate two is welded with a cross connecting rod which movably connects the upper steel column, the fixed ring is sleeved on the shaft body of the transmission shaft, and the four fixed rods which are circumferentially arrayed and welded on the ring body of the fixed ring are welded with the inner wall of the through slot two;

[0020] Step three, then, the circular ring is sleeved on the shaft body of the transmission shaft, the connecting rods which are circumferentially arrayed and distributed on the ring body of the circular ring are welded on the inner wall of the through slot two, and the top end of the support assembly is welded with a circular table which can prevent the transmission shaft from being separated from the circular ring; at this time, the two elastic telescopic support assemblies are in a fully extended state, so that the lower steel column and the upper steel column can be butt jointed.

[0021] Compared with the prior art, the beneficial effects of the present application are:

[0022] Through setting the driving device and the lifting device, when the rotating shaft handle drives the rotating shaft to rotate and under the meshing connection of the bevel gear and the bevel gear two, the transmission shaft synchronously rotates with the rotating shaft, and under the meshing connection of the gear and the internal thread sleeve gear, the four screw rods move upwards, and drive the four fixed rods welded on the upper ends of the four screw rods to move upwards, the inserting rod in the fixed column at the lower end of the screw rod is separated from the fixing of the insertion hole, at this time, the spring in the fixed column is in the compressed state, and when the upper steel column abuts against the basement top plate, the compressed spring can make the fixed column inserted into the hole of the insertion hole, so that the screw rod can be fixed, thereby realizing the height adjustment of the upper steel column, and under the connection of the cross connecting rod welded on the top end of the fixed plate two, the prestress applied to the inner wall of the upper steel column during lifting can be improved, so that the rigidity and carrying capacity of the upper steel column during lifting height are greatly improved, so that the height adjustment of the upper steel column is better. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic view of the present application;

[0024] Figure 2 It is a sectional view of the upper steel column and the lower steel column of the present application;

[0025] Figure 3 It is a sectional view of the present application Figure 2 A enlarged view of the present application;

[0026] Figure 4 It is a structural schematic view of the driving device of the present application;

[0027] Figure 5 It is a sectional view of the present application Figure 4 B enlarged view of the present application;

[0028] Figure 6 It is a structural schematic view of the lifting device of the present application;

[0029] Figure 7 It is a structural schematic view of the adjusting assembly of the present application;

[0030] Figure 8 It is a sectional view of the present application Figure 7 C enlarged view of the present application;

[0031] Figure 9 It is a structural schematic view of the elastic telescopic support assembly of the present application.

[0032] In the drawings, the names of the parts represented by the reference signs are as follows:

[0033] 100 - base plate;

[0034] 200 - lower steel column, 201 - groove one, 202 - through groove one, 203 - insertion hole, 204 - fixed plate one, 205 - fixed plate two, 206 - cross connecting rod;

[0035] 300 - Upper steel column, 301 - Through groove two;

[0036] 400-Drive device, 410-Handwheel, 420-Rotating shaft, 430-Bevel gear, 440-Bevel gear II, 450-Drive shaft, 460-Support assembly, 461-Ring, 462-Connecting rod, 470-Frustum, 480-Gear;

[0037] 500-Lifting device, 510-Adjusting component, 511-Internal threaded sleeve gear, 512-Support rod, 520-Screw rod, 530-Fixing component, 531-Fixing ring, 532-Fixing rod, 540-Elastic telescopic support component, 541-Collar, 542-Fixing column, 543-Insertion rod, 544-Spring. Detailed Implementation

[0038] The preferred embodiments of the present invention are described in detail below, and a clear and complete description is provided in conjunction with the accompanying drawings.

[0039] Implementation 1

[0040] Please see Figures 1-9 The present invention provides a steel column docking support frame.

[0041] When pouring traditional basement roof slabs, steel pipe column support frames are required to support the post-pouring strip. Since the post-pouring strip remains in place for a considerable period before closure, a steel pipe column support system is used to ensure its quality. These columns are erected simultaneously with the formwork before the roof slab concrete is poured. However, existing steel pipe column support frames typically use two sections of steel pipe columns welded together to support the basement roof slab, depending on the required height. This method is not convenient for adapting the steel pipe column support frame to different usage scenarios. The height adjustment is not conducive to the use of the steel pipe column docking support frame, so it needs to be improved. This includes a base plate 100 fixed on the cement ground, a lower steel column 200 for supporting the basement roof slab fixedly installed at the top of the base plate 100, an upper steel column 300 for supporting according to the height of the basement roof slab above the lower steel column 200, a lifting device 500 for driving the upper steel column 300 to extend and retract vertically inside the lower steel column 200, and a drive device 400 for driving the lifting device 500 to control the upper steel column 300 to extend and retract vertically inside the lower steel column 200.

[0042] The column body of the lower steel column 200 is provided with a through groove one 202 for the screw rod 520 to extend up and down, the column of the lower steel column 200 is provided with a plug hole 203 for facilitating the fixation of the plug rod 533, the column body of the lower steel column 200 is provided with a groove one 201 for facilitating the rotation of the transmission shaft 450, and the groove one 201 is located directly below the through groove one 202, a through hole is provided between the groove one 201 and the through groove one 202, and the transmission shaft 450 is placed in the through hole, and the transmission shaft 450 can rotate in the through hole; the cavity inner wall of the through groove one 202 is fixedly provided with a fixed plate one 204 for supporting the support rod 512, and the fixed plate one 204 is welded on the inner wall of the through groove one 202, the cavity inner wall of the through groove one 202 is fixedly provided with a fixed plate two 205 for supporting the support rod 512, and the fixed plate two 205 is located directly above the fixed plate one 204, the fixed plate 205 is provided with a cross connecting rod 206 for movably connecting with the upper steel column 300, and the upper end of the cross connecting rod 206 is hingedly connected with the through groove two 301, and the lower end of the cross connecting rod 206 is movably connected with the top end of the plate body of the fixed plate 205, so that when the lifting device 500 drives the upper steel column 300 to adjust the height, the movable connection of the cross connecting rod 206 can further support the upper steel column 300, and the rigidity and load capacity of the upper steel column 300 and the lower steel column 200 can be greatly improved;

[0043] The column body of the upper steel column 300 is provided with a through groove two 301 for the screw rod 520 to extend up and down, and the size and groove depth of the through groove two 301 are the same as those of the through groove one 202;

[0044] The driving device 400 comprises a transmission shaft 450 arranged in the lower steel column 200 for rotation, the transmission shaft 450 is movably connected with the column body of the lower steel column 200, so as to ensure the normal rotation of the transmission shaft 450, the shaft body of the transmission shaft 450 is fixedly provided with a gear 480 for controlling the lifting device 500 to drive the upper steel column 300 to extend up and down, and the gear 480 is installed on the shaft body of the transmission shaft 450 through key connection, so that the screw rod 520 moves up and down under the rotation of the transmission shaft 450 and the meshing connection of the gear 480 and the internal thread sleeve gear 511, and the height of the upper steel column 300 can be adjusted up and down, so as to reduce the increase of construction error caused by the non-standard height of the basement roof;

[0045] The bottom end of the transmission shaft 450 is fixedly provided with a bevel gear two 440 for driving the transmission shaft 450 to rotate, and the bevel gear two 440 is connected and installed on the shaft body of the transmission shaft 450 by a key, and located in the groove of the groove one 201. The front side of the bevel gear two 440 is provided with a bevel gear 430 for meshing and driving the bevel gear two 440 to rotate. The wheel body of the bevel gear 430 is inserted with a rotating shaft 420 for driving the bevel gear 430 to rotate at the middle of the front end, and the rotating shaft 420 is connected with the column body of the lower steel column 200 through a bearing. The front end of the rotating shaft 420 is welded with a hand wheel 410 for driving the rotating shaft 420 to rotate. When the operator drives the hand wheel 410 to rotate, the transmission shaft 450 is driven to rotate synchronously with the rotating shaft 420 under the meshing connection of the bevel gear 430 and the bevel gear two 440.

[0046] The upper part of the shaft body of the transmission shaft 450 is provided with a support assembly 460 for supporting the transmission shaft 450. The top end of the transmission shaft 450 is welded with a limiting circular table 470 for preventing the transmission shaft 450 from being separated from the support assembly 460. The support assembly 460 includes a circular ring 461 sleeved on the shaft body of the transmission shaft 450, and the transmission shaft 450 is connected with the circular ring 461 in a sliding manner, so that the transmission shaft 450 can move up and down in the ring cavity of the circular ring 461 under the rotation of the transmission shaft 450. The ring body of the circular ring 461 is fixedly provided with a connecting rod 462 for connecting with the inner wall of the upper steel column 300. There are four connecting rods 462, which are arranged in a circular array on the ring body of the circular ring 461. The four connecting rods 462 are welded to the inner wall of the through groove two 301 away from the circular ring 461, so that the stable rotation of the transmission shaft 450 can be facilitated.

[0047] The lifting device 500 includes an adjusting assembly 510 connected with the gear 480 for rotation. There are four adjusting assemblies 510, which are arranged in a circular array on the outer side of the gear 480. The middle part of the adjusting assembly 510 is inserted with a screw rod 520 for up-down telescopic movement. The top end of the screw rod 520 is fixedly provided with a fixing assembly 530 for fixedly connecting with the upper steel column 300. The bottom end of the screw rod 520 is fixedly provided with an elastic telescopic support assembly 540 for fixing the screw rod 520.

[0048] The adjusting assembly 510 comprises an inner threaded sleeve gear 511 connected with the gear 480 in engagement, and the inner threaded sleeve gear 511 is connected with the screw rod 520 in screwing, and the inner threaded sleeve gear 511 is connected with the inner threaded sleeve in gear, so that the inner threaded sleeve gear 511 rotates synchronously under the rotation of the transmission shaft 450 and the engagement of the gear 480 and the inner threaded sleeve gear 511, and the inner threaded sleeve gear 511 is connected with the screw rod 520 in screwing, so that the four screw rods 520 can move synchronously up and down when the inner threaded sleeve gear 511 rotates, and the height adjustment of the upper steel column 300 can be realized by the support of the fixing assembly 530, so as to better support the basement roof; the wheel body of the inner threaded sleeve gear 511 is inserted with a support rod 512 for supporting the inner threaded sleeve gear 511, and the support rod 512 has four, the upper end of the four support rods 512 is movably connected with the plate body of the fixed plate two 205, and the lower end of the four support rods 512 is movably connected with the plate body of the fixed plate one 204, so as to facilitate the rotation of the inner threaded sleeve gear 511;

[0049] The fixing assembly 530 comprises a fixed ring 531 sleeved on the shaft body of the transmission shaft 450 for moving up and down, and the transmission shaft 450 and the fixed ring 531 are in sliding connection, so that the fixed ring 531 can drive the upper steel column 300 to move up and down synchronously when the four screw rods 520 move up and down; the ring body of the fixed ring 531 is fixedly installed with a fixed rod 532 for fixedly connecting with the upper steel column 300, and the fixed rod 532 has four, the four fixed rods 532 are distributed in a circumferential array on the fixed ring 531, and the bottom ends of the four fixed rods 532 are fixedly connected with the top ends of the four screw rods 520, so that the four screw rods 520 can move up and down under the rotation of the transmission shaft 450 and the engagement of the gear 480 and the inner threaded sleeve gear 511, and the height adjustment of the upper steel column 300 can be realized, so as to better support the basement roof;

[0050] The elastic telescopic support assembly 540 comprises a sleeve ring 541 sleeved on the shaft body of the transmission shaft 450 for moving up and down, the ring body of the sleeve ring 541 is fixedly provided with fixed columns 542 for fixedly connecting with the upper and lower ends of the screw rods 520, and the fixed columns 542 are four, the four fixed columns 542 are circumferentially arranged and welded on the ring body of the sleeve ring 542, the column cavities of the fixed columns 542 are provided with plug rods 543 for telescoping, and the plug rods 543 can be inserted into the plug holes 203 to fix the lifting device 500 and increase the bearing capacity between the upper steel columns 300 and the lower steel columns 200, the column cavities of the fixed columns 542 are provided with springs 544 for controlling the telescoping of the plug rods 543 in the column cavities of the fixed columns 542, so that when the operator needs to support the basement roof, the bottom plate 100 can be fixed on the cement ground through bolts, at this time, the upper steel columns 300 and the lower steel columns 200 are located directly below the basement roof, and when the rotating shaft 420 is driven to rotate by the rotating shaft hand wheel 410 and is meshed and connected with the bevel gears 430 and 440, the transmission shaft 450 is synchronously rotated with the rotating shaft 420, and at the same time, the four screw rods 520 are moved upward under the meshing connection between the gear 480 and the internal thread sleeve gear 511, the four fixed rods 532 welded on the upper ends of the four screw rods 520 drive the upper steel columns 300 to move upward, the plug rods 543 in the fixed columns 542 at the lower ends of the screw rods 520 are separated from the fixation of the plug holes 203, at this time, the springs 544 in the fixed columns 542 are in a compressed state, and when the upper steel columns 300 abut against the basement roof, the compressed springs 544 are inserted into the holes of the plug holes 203, so that the screw rods 520 can be fixed, and the height adjustment of the upper steel columns 300 is realized.

[0051] Implementation two

[0052] Please refer to Figures 1-9 The application provides a steel column butt joint construction method of a steel column butt joint support frame.

[0053] The transmission shaft 450 is inserted into the through hole of the lower steel column 200, and the upper part of the transmission shaft 450 is located in the cavity of the through slot two 301, the gear 480 connected with the transmission shaft 450 by the key is installed on the shaft body of the transmission shaft 450, the bevel gear two 440 connected with the transmission shaft 450 by the key is located in the slot of the slot one 201, the bevel gear 430 connected with the transmission shaft 420 by the key is located in the cavity of the slot one 201 and is in meshing connection with the bevel gear two 440, and the hand wheel 410 connected with the transmission shaft 420 by welding is located at the front end of the transmission shaft 420; when the hand wheel 410 is driven to rotate, the transmission shaft 450 is driven to rotate synchronously with the bevel gear two 440 under the meshing connection of the bevel gear 430 and the bevel gear two 440, and the gear 480 is also driven to rotate synchronously with the transmission shaft 450.

[0054] The sleeve ring 541 is sleeved on the shaft body of the transmission shaft 450 and placed in the cavity of the through slot one 202, the four insertion rods 543 are respectively inserted into the four insertion holes 203, the bottom ends of the four screw rods 520 are welded on the top ends of the four fixed columns 542 which are arranged in a circumferential array on the ring body of the sleeve ring 541, the fixed plate one 204 is sleeved over the transmission shaft 450 and the four screw rods 520, the fixed plate one 204 does not affect the rotation of the transmission shaft 450 and the up-down movement of the four screw rods 520, the fixed plate one 204 is welded with the inner wall of the through slot one 202, the inner thread sleeve gear 511 connected with the screw rod 520 by the thread connection is located above the fixed plate one 204, the support rod 512 for supporting the inner thread sleeve gear 511 is inserted into the wheel body of the inner thread sleeve gear 511, and the support rod 512 is movably connected with the fixed plate one 204, the fixed plate two 205 is sleeved over the transmission shaft 450 and the four screw rods 520, the fixed plate two 205 is welded with the inner wall of the through slot one 202, the inner thread sleeve gear 511 connected with the screw rod 520 by the thread connection is located below the fixed plate two 205, and the support rod 512 is movably connected with the fixed plate two 205, the fixed ring 531 is sleeved on the shaft body of the transmission shaft 450, the four fixed rods 532 arranged in a circumferential array on the ring body of the fixed ring 531 are welded with the inner wall of the through slot two 301, and the top ends of the four screw rods 520 are welded with the four fixed rods 532; when the transmission shaft 450 rotates, the four screw rods 520 are driven to move upwards synchronously under the meshing connection of the gear 480 and the four inner thread sleeve gears 511, and the four fixed rods 532 drive the upper steel column 300 to move upwards, so that the height adjustment of the upper steel column 300 is completed.

[0055] The circular ring 461 is sleeved on the shaft body of the transmission shaft 450, and is located in the cavity of the through slot two 301. The connecting rods 462 distributed in a circumferential array on the ring body of the circular ring 461 are welded on the inner wall of the through slot two 301. The top end of the support assembly 460 is welded with the circular table 470, which can prevent the transmission shaft 450 from being separated from the circular ring 461. At this time, the two elastic telescopic support assemblies 540 are in a fully extended state, so that the lower steel column 200 and the upper steel column 300 can be butt jointed;

[0056] When the upper steel column 300 needs to be up and down telescopic, the hand wheel 410 drives the rotating shaft 420 to rotate, and the transmission shaft 450 synchronously rotates with the rotating shaft 420 under the meshing connection of the bevel gear 430 and the bevel gear two 440. The four screw rods 520 connected with the four internally threaded sleeve gears 511 through the screw connection move up and down under the meshing connection of the gear 480 and the four internally threaded sleeve gears 511, so that the four fixed columns 542 move up and down, and the insertion rod 543 is inserted into or separated from the through slot one 202 under the elastic connection of the insertion rod 543 and the spring 544, so that the four screw rods 520 are fixed or unfixed, and the four fixed rods 532 drive the up and down movement of the upper steel column 300, so that the height of the upper steel column 300 is adjusted up and down.

[0057] Based on the above content and the drawings, those skilled in the art can understand and implement the present application. In addition, any non-creative modification of the present application made by those skilled in the art without creative labor still falls within the protection scope of the present application.

Claims

1. A steel column butt support frame comprising a base plate (100) fixed on a cement ground, characterized in that: The top end of the bottom plate (100) is fixedly installed with a lower steel column (200) for supporting the basement roof, an upper steel column (300) for supporting according to the height of the basement roof is arranged above the lower steel column (200), a lifting device (500) for driving the upper steel column (300) to stretch up and down is arranged in the lower steel column (200), and a driving device (400) for driving the lifting device (500) to control the upper steel column (300) to stretch up and down is arranged in the lower steel column (200); The driving device (400) comprises a transmission shaft (450) arranged in the lower steel column (200) for rotation, and a gear (480) for controlling the lifting device (500) to drive the upper steel column (300) to stretch up and down is fixedly installed on the shaft body of the transmission shaft (450); The lifting device (500) comprises an adjusting assembly (510) in meshing connection with the gear (480) for rotation, and the adjusting assembly (510) has four, the four adjusting assemblies (510) are arranged in a circumferential array on the outside of the gear (480), a screw rod (520) for stretching up and down is inserted into the middle part of the adjusting assembly (510), a fixing assembly (530) for fixedly connecting with the upper steel column (300) is fixedly installed at the top end of the screw rod (520), and an elastic telescopic supporting assembly (540) for fixing the screw rod (520) is fixedly installed at the bottom end of the screw rod (520); The elastic telescopic supporting assembly (540) comprises a sleeve ring (541) sleeved on the shaft body of the transmission shaft (450) for up and down movement, a fixed column (542) for fixedly connecting with the upper and lower ends of the screw rod (520) is fixedly installed on the ring body of the sleeve ring (541), a plug rod (543) for telescoping is arranged in the column cavity of the fixed column (542), and a spring (544) for controlling the plug rod (543) to telescope in the column cavity of the fixed column (542) is arranged in the column cavity of the fixed column (542).

2. The butt strutting frame of a steel column according to claim 1, characterized in that: The adjusting assembly (510) comprises an internally-threaded sleeve gear (511) in meshing connection with the gear (480), and the internally-threaded sleeve gear (511) is in wire connection with the screw rod (520), and a supporting rod (512) for supporting the internally-threaded sleeve gear (511) is inserted into the wheel body of the internally-threaded sleeve gear (511).

3. The butt strutting frame of a steel column according to claim 1, characterized in that: The fixing assembly (530) comprises a fixing ring (531) sleeved on the rod body of the screw rod (520) for up and down movement, a fixing rod (532) for fixedly connecting with the upper steel column (300) is fixedly installed on the ring body of the fixing ring (531), and the fixing rod (532) has four, the four fixing rods (532) are arranged in a circumferential array on the fixing ring (531), and the bottom ends of the four fixing rods (532) are fixedly connected with the top end of the screw rod (520).

4. The butt strutting frame of a steel column according to claim 1, characterized in that: The bottom end of the transmission shaft (450) is fixedly installed with a bevel gear two (440) for driving the transmission shaft (450) to rotate, the front side of the bevel gear two (440) is provided with a bevel gear (430) for meshing connection with the bevel gear two (440) and driving the bevel gear two (440) to rotate, the wheel body front end of the bevel gear (430) is inserted with a rotating shaft (420) for driving the bevel gear (430) to rotate, and the front end of the rotating shaft (420) is fixedly installed with a hand wheel (410) for driving the rotating shaft (420) to rotate.

5. The butt strutting frame of a steel column according to claim 1, characterized in that: The upper part of the shaft body of the transmission shaft (450) is provided with a supporting assembly (460) for supporting the transmission shaft (450), and the top end of the transmission shaft (450) is fixedly installed with a truncated cone (470) for preventing the transmission shaft (450) from being separated from the support of the supporting assembly (460).

6. A butt strutting frame for steel columns according to claim 1, characterized in that: The supporting assembly (460) comprises a ring (461) sleeved on the shaft body of the transmission shaft (450), the ring body of the ring (461) is fixedly installed with a connecting rod (462) for connecting with the inner wall of the upper steel column (300), and there are four connecting rods (462) which are circumferentially arranged on the ring body of the ring (461).

7. A butt strutting frame for steel columns according to claim 4, wherein: The column of the lower steel column (200) is provided with a bushing (203) for conveniently fixing the inserting rod (543), the column body of the lower steel column (200) is provided with a through groove one (202) for the screw rod (520) to extend up and down, the column body of the lower steel column (200) is provided with a groove one (201) for the transmission shaft (450) to rotate, the inner wall of the cavity of the through groove one (202) is fixedly installed with a fixed plate one (204) for supporting the supporting rod (512), the inner wall of the cavity of the through groove one (202) is fixedly installed with a fixed plate two (205) for supporting the supporting rod (512), and the fixed plate two (205) is located directly above the fixed plate one (204), and the plate body of the fixed plate two (205) is provided with a cross connecting rod (206) for movably connecting the upper steel column (300).

8. A butt strutting frame for steel columns according to claim 7, characterised in that: The column body of the upper steel column (300) is provided with a through groove two (301) for the screw rod (520) to extend up and down, and the size and groove depth of the through groove two (301) are the same as those of the through groove one (202).

9. A steel column butt construction method using the steel column butt support frame according to any one of claims 1 to 8, characterized by: The steps include the following steps: Step one, first, the transmission shaft (450) is inserted into the column body of the lower steel column (200), the shaft body of the transmission shaft (450) is installed with a gear (480) for rotating synchronously with the transmission shaft (450) through key connection, the bottom end of the transmission shaft (450) is connected with the bevel gear two (440) through key connection, the rear end of the rotating shaft (420) is installed with the bevel gear (430) through key connection and located in the cavity of the groove one (201) while being meshed with the bevel gear two (440), and the front end of the rotating shaft (420) is welded with the hand wheel (410) which can drive the rotating shaft (420) to rotate. Step two, the sleeve (541) is sleeved on the shaft of the transmission shaft (450) and placed in the cavity of the through slot one (202), and the four insertion rods (543) are inserted into the corresponding four insertion holes (203) respectively, the four screw rods (520) are welded on the top of the four fixed columns (542) distributed in the circumferential array on the ring body of the sleeve (541), the fixed plate one (204) is welded with the inner wall of the through slot one (202), the fixed plate two (205) is sleeved over the transmission shaft (450) and the four screw rods (520), and the fixed plate two (205) is welded with the inner wall of the through slot one (202), and the top of the plate body of the fixed plate two (205) is welded with the cross connecting rod (206) which is movably connected with the upper steel column (300); the fixed ring (531) is sleeved on the shaft of the transmission shaft (450), and the four fixed rods (532) which are circumferentially arrayed on the ring body of the fixed ring (531) are welded with the inner wall of the through slot two (301); Step three, the ring (461) is sleeved on the shaft of the transmission shaft (450), and the connecting rods (462) which are circumferentially arrayed on the ring body of the ring (461) are welded on the inner wall of the through slot two (301), and the top of the support assembly (460) is welded with the circular table (470), which can prevent the transmission shaft (450) from being separated from the ring (461); At this time, the two elastic expansion support assemblies (540) are in the fully extended state, so that the lower steel column (200) and the upper steel column (300) can be connected.

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