Steel pipe supporting column used for post-cast strip and capable of adjusting distance between vertical rods

Abstract

A steel pipe supporting column used for a post-cast strip and capable of adjusting the distance between vertical rods comprises a set of supporting columns and a connecting piece connected with the set of supporting columns, each supporting column comprises a vertical rod, a gear track is installed in the middle of the vertical rod, a connecting pipe is installed at the top of the vertical rod, and an adjusting nut is connected to the top of the connecting pipe in a sleeved mode and connected with a top support through threads. Bottom supports are installed at the bottoms of the vertical rods, the gear rails are meshed with disc wheels, connecting rods of connecting pieces are installed on the disc wheels, a set of connecting rods are crossed, combined discs are installed at the crossed positions, and the other ends of the connecting rods are fixedly installed on the vertical rods. The utility model relates to the technical field of post-cast strip supporting, through meshing of a gear track and a disc wheel, a cross connecting rod relatively rotates and horizontally moves, so that the distance between two sets of supporting columns is adjusted to adapt to post-cast strips of different sizes, the applicability and stability of the steel pipe supporting column are improved, and the practicability of the steel pipe supporting column is improved. Installation and operation are convenient, environmental protection and corrosion resistance are high, and reliability, stability and practical application value are high.

Description

Technical Field

[0001] The utility model relates to the technical field of post-cast strip supports, in particular to a steel pipe support column with adjustable vertical pole spacing for a post-cast strip. Background Art

[0002] With the continuous development of social economy, more and more attention has been paid to the quality and safety of construction projects. As one of the important links in the current project construction, the post-casting belt technology plays a vital role in the construction of the entire project. Its reasonable application can improve the quality of reinforced concrete structures and avoid abnormal problems in the structure, such as uneven settlement and poor shrinkage. Due to the important role of the post-casting belt, the support of the post-casting belt has also become a key point in construction. If the support system at the cantilever position is not set up in place and does not meet the specifications, it will also affect the safety of the building structure.

[0003] There are many post-casting strip support methods in the prior art, which are used to prevent displacement and deformation during concrete pouring and avoid structural problems caused by settlement differences. However, there are inevitably certain defects. For example, in the paper "Application of Concrete Column Support Post-casting Strip Beam and Slab Construction Technology" in the 7th issue of "Engineering Construction and Design" in 2023, concrete columns are selected as temporary support structures for post-casting strips, and independent columns and beam and slab structures are cast separately, so that the concrete columns and the main structure of the post-casting strip are formed at one time to form a temporary support structure. Although it can save construction sites and has high overall construction efficiency, its limitations are also very obvious. The spacing and height cannot be adjusted, the concrete is heavy, and it is difficult to dismantle; in the paper "Research and Application of Post-casting Strip Temporary Support System" in the 14th issue of Volume 46 of "Engineering Technology" in July 2019, although the fastener-type steel pipe scaffolding is widely used, there are problems such as irregular erection and difficulty in management. The proposed new post-casting strip temporary support structure saves the rental costs of steel pipe fasteners, but the structure itself is heavy and can only be used alone, and the bearing capacity is not high.

[0004] For example, CN215715577U discloses a basement post-cast strip support device, which relates to the field of building construction technology, and comprises an upper steel plate, a fixed bracket, a steel pipe and a lower steel plate, wherein the bottom end of the steel pipe is arranged on the lower steel plate, the lower steel plate is arranged on the ground, the upper steel plate is arranged on the top of the steel pipe, and the upper steel plate is fixedly connected to the top of the wall, and two fixed brackets are provided, and the fixed brackets are symmetrically arranged above the lower steel plate; the problem that the supporting method in the prior art wastes materials seriously, and a large number of steel pipes are particularly time-consuming and labor-intensive to assemble, and require a lot of manual operation, and such brackets will greatly affect the movement of people when supporting, and it is inconvenient for manual construction work in the basement; however, the device cannot adjust the height and spacing, and when the bearing capacity of a single vertical pole cannot be guaranteed, multiple vertical poles cannot be used, and the usable height range is small.

[0005] Therefore, it is extremely crucial to develop a device that can adjust the height and spacing of vertical poles, while meeting the use of multiple vertical poles and being convenient to operate. Summary of the Invention

[0006] The technical problem to be solved by the utility model is to provide a steel pipe support column for adjustable vertical pole spacing in post-cast strips, and solve the problems of poor stability, low bearing capacity, and inability to adjust the height and spacing of the existing post-cast strip support means.

[0007] To solve the above technical problems, the technical solution adopted by the utility model is: a steel pipe support column for adjustable vertical pole spacing in post-cast strips, including a group of support columns and a connecting piece connecting the group of support columns. The support column includes a vertical pole, a gear track is installed in the middle of the vertical pole, a connecting pipe is installed at the top of the vertical pole, an adjusting nut is sleeved on the top of the connecting pipe, the adjusting nut is threadedly connected with the top support, a bottom support is installed at the bottom of the vertical pole, the gear track meshes with a disc wheel, a connecting rod of the connecting piece is installed on the disc wheel, a group of connecting rods cross each other, a combined disc is installed at the crossing position, and the other end of the connecting rod is fixedly installed on the vertical pole.

[0008] In a preferred solution, the inside of the connecting pipe is hollow, a thread is provided at the lower end inside, the lower end is threadedly connected with the vertical pole through the thread, the adjusting nut is sleeved on the upper end, and the adjusting nut rotates freely inside the connecting pipe.

[0009] In a preferred solution, the inside of the adjusting nut is provided with a thread, and is screwed with the top support through the thread. The lower part of the adjusting nut is sleeved inside the connecting pipe and rotates freely.

[0010] In a preferred solution, a sleeve is provided at the meshing position of the gear track and the disc wheel. A through slot is provided in the side of the sleeve, and the connecting rod is inserted into the slot and slides up and down in the slot.

[0011] In a preferred solution, the bottom support includes a bottom column, the lower end of the vertical pole is screwed with the bottom column through the thread, and the lower end of the bottom column is fixed on the base.

[0012] In a preferred solution, the combined disc includes an inner disc. A group of connecting rods includes inner inclined rods and outer inclined rods. The inner inclined rods and the outer inclined rods cross each other. The inner inclined rods are disconnected from the middle, and the two disconnected ends are respectively fixed to the circumferences on both sides of the inner disc. The outer disc is hollow inside, the inner disc is sleeved therein, the outer inclined rods are also disconnected from the middle, and the two disconnected ends are respectively fixed to the circumferences on both sides of the outer disc. The lower ends of the inner inclined rods and the outer inclined rods are hinged and fixed to the vertical pole through fixed supports, and their upper ends are hinged to the wheel disc. A limited position rod extends out and is inserted near the upper part of the wheel disc.

[0013] In a preferred embodiment, a plurality of limiting holes are densely arranged on the inner disc, and central holes are provided at positions on the outer disc center opposite to the inner disc. The pin shaft is inserted into the central holes to relatively fix the inner disc and the outer disc, and at the same time, the outer disc rotates around the inner disc.

[0014] In a preferred embodiment, a slot is provided on the outer circumference of the outer disc, and the two disconnected ends of the inner inclined rod are inserted into the slot and fixed to the inner disc.

[0015] In a preferred embodiment, a set of waist slots are provided on the upper and lower parts of the front and back sides of the outer disc. The positioning pin passes through the waist slots and is inserted into the limiting holes of the inner disc to fix the inner disc and the outer disc.

[0016] In a preferred embodiment, auxiliary holes are provided at positions on the front and back sides of the outer disc between a set of waist slots and opposite to the inner disc. Fixing pins are installed in the holes to fix the inner disc and the outer disc.

[0017] The present utility model provides a steel pipe support column capable of adjusting the height and spacing of vertical rods, and has the following beneficial effects:

[0018] 1. The present utility model solves the problems of poor stability, low bearing capacity, and inability to adjust the height and spacing of the existing post-cast strip support means.

[0019] 2. The present utility model is convenient for installation and disassembly, reduces the waiting time during the construction process, improves the construction efficiency, and can be reused, with a high material recycling rate.

[0020] 3. The present utility model can select vertical rods of different heights and be matched with adjustable top supports to adjust the support height, so as to meet the needs of different construction heights and storey heights, without the need to frequently replace or adjust the support components.

[0021] 4. The present utility model has reasonable force, high bearing capacity, and can also use multiple vertical rods, ensuring the stability and safety of the structure.

[0022] 5. The present utility model has strong adaptability, can adjust the spacing of vertical rods to achieve different support spacings, and can flexibly adapt to different construction conditions.

[0023] 6. Through optimized design, the present utility model reduces the material usage, lowers the cost, and conforms to the concepts of environmental protection and energy conservation; its structure is simple, the operation is convenient, it is easy to maintain and manage, and it is applicable to various building construction sites.

[0024] 7. The present utility model also has excellent durability and corrosion resistance, can work stably for a long time in a harsh construction environment, and further improves its application value; this design not only improves the construction quality and efficiency, but also brings new innovations and breakthroughs to the modern building construction field.

[0025] 8. The standardized design of the steel pipe support column of the present utility model enables seamless docking with a variety of construction equipment, further improving the coordination efficiency during the construction process; at the same time, this design also provides a more reliable guarantee for safety management during the construction process, reducing the occurrence of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0027] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0028] Figure 2 is a schematic diagram of the structure of the connecting member of the present utility model;

[0029] Figure 3 is an assembly schematic diagram of the inner inclined rod and the inner disc of the present utility model;

[0030] Figure 4 is an assembly schematic diagram of the outer inclined rod and the outer disc of the present utility model;

[0031] Figure 5 is a partial schematic diagram of the assembly of the sleeve and the vertical rod of the present utility model;

[0032] Figure 6 is an assembly schematic diagram of the inner wheel disc and the gear track inside the sleeve of the present utility model;

[0033] Figure 7 is a usage state diagram of Embodiment 2 of the present utility model;

[0034] In the figure: top support 1, adjusting nut 2, connecting pipe 3, vertical rod 4, wheel disc 5, gear track 6, sleeve 7, central hole 8, fixed support 9, bottom column 10, base 11, inner inclined rod 12, outer inclined rod 13, pin shaft 14, limiting hole 15, inner disc 16, outer disc 17, limiting rod 18, waist groove 19, positioning pin 20, auxiliary hole 21, fixing pin 22. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The technical solutions in the present utility model will be further described below in conjunction with the drawings and embodiments:

[0036] Embodiment 1

[0037] As Figures 1 - 6As shown in the figure, a steel pipe support column for adjusting the vertical rod spacing of post-cast strips includes a group of support columns and a connecting piece connecting the group of support columns. The support column includes a vertical rod 4, a gear track 6 is installed in the middle of the vertical rod 4, a connecting pipe 3 is installed at the top of the vertical rod 4, an adjusting nut 2 is sleeved on the top of the connecting pipe 3, the adjusting nut 2 is connected to the top support 1 through threads, a bottom support is installed at the bottom of the vertical rod 4, the gear track 6 meshes with a disc wheel 5, a connecting rod of the connecting piece is installed on the disc wheel 5, a group of connecting rods cross each other, a combined disc is installed at the crossing position, and the other end of the connecting rod is fixedly installed on the vertical rod 4.

[0038] In this embodiment, the inside of the connecting pipe 3 is hollow, a thread is provided at the lower end inside, the lower end is connected to the vertical rod 4 through threads, the upper end is sleeved with the adjusting nut 2, and the adjusting nut 2 rotates freely inside the connecting pipe 3.

[0039] Furthermore, the inside of the adjusting nut 2 is provided with threads and is screwed with the top support 1 through threads. The lower part of the adjusting nut 2 is sleeved inside the connecting pipe 3 and rotates freely.

[0040] Furthermore, a sleeve 7 is provided at the meshing position of the gear track 6 and the disc wheel 5. A vertically penetrating slot is provided on the side of the sleeve 7, and the connecting rod is inserted into the slot and slides up and down in the slot.

[0041] Furthermore, the bottom support includes a bottom column 10. The lower end of the vertical rod 4 is screwed with the bottom column 10 through threads, and the lower end of the bottom column 10 is fixed on the base 11.

[0042] Furthermore, the combined disc includes an inner disc 16. A group of connecting rods includes an inner inclined rod 12 and an outer inclined rod 13. The inner inclined rod 12 and the outer inclined rod 13 cross each other. The inner inclined rod 12 is disconnected from the middle, and the two disconnected ends are respectively fixed to the circumferences on both sides of the inner disc 16. The inside of the outer disc 17 is hollow, and the inner disc 16 is sleeved therein. The outer inclined rod 13 is also disconnected from the middle, and the two disconnected ends are respectively fixed to the circumferences on both sides of the outer disc 17. The lower ends of the inner inclined rod 12 and the outer inclined rod 13 are hinged and fixed to the vertical rod 4 through a fixed support 9, and their upper ends are hinged to the wheel disc 5. A limiting rod 18 extends out by inserting at the upper part close to the wheel disc 5.

[0043] Furthermore, a plurality of limiting holes 15 are densely arranged on the inner disc 16. Central holes 8 are provided at the positions on the outer disc 17 opposite to the center of the inner disc 16. A pin shaft 14 is inserted into the central holes 8 to relatively fix the inner disc 16 and the outer disc 17, and at the same time, the outer disc 17 rotates around the inner disc 16.

[0044] Furthermore, a slot is provided on the outer circumference of the outer disc 17, and the two disconnected ends of the inner inclined rod 12 are inserted into the slot and fixed to the inner disc 16.

[0045] Further, a set of waist slots 19 are provided at the upper and lower parts of the front and back sides of the outer disc 17. The positioning pins 20 pass through the waist slots 19 and are inserted into the limit holes 16 of the inner disc 16 to fix the inner disc 16 and the outer disc 17.

[0046] Further, auxiliary holes 21 are provided at the positions of the front and back sides of the outer disc 17 between a set of waist slots 19 and opposite to the inner disc 16. Fixing pins 22 are installed in the holes to fix the inner disc 16 and the outer disc 17.

[0047] During specific use, after the processing and acceptance of each component are qualified, the inner disc 16 and the outer disc 17 are sleeved, and then the inner disc 16 and the inner inclined rod 12, and the outer disc 17 and the outer inclined rod 13 are respectively fixed, and the inner inclined rod 12 and the outer inclined rod 13 are cross-crossed; the top support 1, the adjusting nut 2, the connecting pipe 3, the vertical rod 4, the gear track 6, the sleeve 7, the fixed support 9, the bottom column 10, and the base 11 are sequentially installed and fixed. Before sleeving and fixing the sleeve 7, the wheel disc 5 is respectively hinged and fixed to the inner inclined rod 12 and the outer inclined rod 13, and then the wheel disc 5 is meshed and fixed with the gear track 6. Then, the limiting rods 18 are installed on the upper parts of the inner inclined rod 12 and the outer inclined rod 13 to keep the wheel disc 5 in close meshing with the gear track 6; the lower ends of the inner inclined rod 12 and the outer inclined rod 13 are respectively hinged and fixed to the fixed support 9; after installation, the inner inclined rod 12 and the outer inclined rod 13 are rotated, and the adjusting nut 2 is rotated to adjust the rising and falling of the top support 1 to adjust the up and down height and left and right width of a steel pipe support column with adjustable vertical rod spacing for post-cast strip; after passing the debugging, when it is put into use, first adjust the width of the device by rotating the inner inclined rod 12 and the outer inclined rod 13, and insert the positioning pin 20 into the waist slot 19 of the outer disc 17 to fix the inner disc 16 and the outer disc 17, and at the same time fix the width of the steel pipe support column. After adjustment, it is arranged at the post-cast strip position to be supported, and then the top support 1 is raised or lowered by rotating the adjusting nut 2 to adjust the height of the steel pipe support to support the post-cast strip support position.

[0048] Embodiment 2

[0049] In another preferred embodiment, on the basis of the above Embodiment 1, refer to the attached Figure 7, when the supporting area is large or the requirement for supporting strength is high, multiple sets of steel pipe support columns with adjustable vertical rod spacing for post-cast strips can be used in combination. After the supports are assembled, according to the length of the post-cast strip, several sets of supports are arranged along the length direction of the post-cast strip under the beam; according to the width of the post-cast strip, the two vertical rods 4 of the installed supports are respectively erected on both sides of the post-cast strip; loosen the nuts on the combined disc, adjust the included angle of the connecting piece to be larger, and when the support spacing meets the width, tighten the nuts; at the same time, fix the other limiting holes 15 on the combined disc with nuts to ensure that the connecting piece will not move; at the same time, rotate the adjusting nut 2 to adjust the height until it reaches the bottom of the beam; templates can be arranged in the area above the support for pouring in the post-cast strip area; at the same time, the support can also be used independently on one side of the post-cast strip to ensure that the beam and slab will not be cantilevered and change their original stress.

[0050] In a preferred solution, the connecting pipe 3 is hollow inside, with threads provided at the lower end inside. The lower end is connected to the vertical rod 4 through the threads, and the upper end is sleeved with the adjusting nut 2. The adjusting nut 2 can rotate freely inside the connecting pipe 3; with the above settings, by rotating the adjusting nut 2, the position of the connecting pipe 3 on the vertical rod 4 can be conveniently adjusted, thereby realizing the height adjustment of the entire device; in addition, the threaded connection between the connecting pipe 3 and the vertical rod 4 ensures the stability and safety of the connection.

[0051] In a preferred solution, the adjusting nut 2 is provided with threads inside and is screwed with the top support 1 through the threads. The lower part of the adjusting nut 2 is sleeved inside the connecting pipe 3 and can rotate freely; with the above settings, when it is necessary to adjust the relative position between the top support 1 and the connecting pipe 3, only by rotating the adjusting nut 2 can the relative position of the two be finely adjusted, thereby meeting different assembly requirements, with simple operation and high adjustment accuracy.

[0052] In a preferred solution, a sleeve 7 is provided at the meshing position of the gear track 6 and the disc wheel 5. The side part of the sleeve 7 is provided with a slotted hole penetrating up and down, and the connecting rod is inserted into the slotted hole and slides up and down inside the slotted hole; with the above settings, the meshing between the disc wheel 5 and the gear track 6 can be finely adjusted to ensure a closer fit between the two, reduce the frictional loss during operation, and improve the stability and service life of the entire transmission system.

[0053] In a preferred solution, the bottom support includes a bottom column 10. The lower end of the vertical rod 4 is screwed with the bottom column 10 through the threads, and the lower end of the bottom column 10 is fixed on the base 11; with the above settings, the entire device is more stable and not easy to shake during use; the screwed design of the bottom column 10 and the vertical rod 4 facilitates users to adjust the height according to needs to adapt to different usage scenarios; the design of the base 11 further enhances the stability of the device, making it safer and more reliable during use.

[0054] In a preferred embodiment, the combined disc includes an inner disc 16, and a set of connecting rods includes an inner inclined rod 12 and an outer inclined rod 13. The inner inclined rod 12 and the outer inclined rod 13 cross each other. The inner inclined rod 12 is disconnected in the middle, and the two disconnected ends are respectively fixed to the circumferences on both sides of the inner disc 16. The outer disc 17 is hollow inside, and the inner disc 16 is sleeved therein. The outer inclined rod 13 is also disconnected in the middle, and the two disconnected ends are respectively fixed to the circumferences on both sides of the outer disc 17. The lower ends of the inner inclined rod 12 and the outer inclined rod 13 are hinged and fixed together with the vertical rod 4 through a fixed support 9, and their upper ends are hinged to the wheel disc 5. An extended limit rod 18 is inserted near the upper part of the wheel disc 5. With the above settings, the flexible rotation of the combined disc on the vertical rod 4 is realized. By adjusting the inclination angle of the combined disc, the inclination angle of the support platform 3 is further adjusted, so as to better adapt to different working environments and improve the construction efficiency. The setting of the limit rod 18 prevents the inner inclined rod 12 and the outer inclined rod 13 from sliding out from the slot of the sleeve 7, and at the same time further ensures the tight meshing of the wheel disc 5 and the gear track 6, thereby further ensuring the precision, stability and reliability of the transmission.

[0055] In a preferred embodiment, a plurality of limit holes 15 are densely arranged on the inner disc 16. Central holes 8 are arranged at positions on the outer disc 17 opposite to the center of the inner disc 16. A pin shaft 14 is inserted into the central hole 8 to relatively fix the inner disc 16 and the outer disc 17, and at the same time, the outer disc 17 rotates around the inner disc 16. With the above settings, the limit holes 15 on the inner disc 16 match the corresponding positions on the outer disc 17, so that at a specific angle, the outer disc 17 can be locked with the limit holes 15 of the inner disc 16 through the pin shaft 14, thereby realizing a specific angle positioning function.

[0056] In a preferred embodiment, a slot is arranged on the outer circumference of the outer disc 17, and the two disconnected ends of the inner inclined rod 12 are inserted into the slot and fixed to the inner disc 16. With the above settings, the outer disc 17 and the inner disc 16 are connected through the inner inclined rod 12, and the outer disc 17 and the inner disc 16 can rotate relative to each other, thereby realizing the adjustable angle between the outer disc 17 and the inner disc 16, which provides convenience for adjusting the angle of the rotating rod 15.

[0057] In a preferred embodiment, a set of waist slots 19 are arranged on the upper and lower parts of the front and back of the outer disc 17. A positioning pin 20 passes through the waist slot 19 and is inserted into the limit hole 16 of the inner disc 16 to fix the inner disc 16 and the outer disc 17. With the above settings, the connection between the inner disc 16 and the outer disc 17 is more stable and not easy to loosen, ensuring the stability and reliability of the equipment. At the same time, the design of the waist slot 19 also makes it more convenient and quick to insert and pull out the positioning pin 20, which is convenient for the assembly and disassembly of the equipment.

[0058] In a preferred embodiment, auxiliary holes 21 are provided at the positions on the front and back sides of the outer disc 17 between a set of waist grooves 19 and opposite to the inner disc 16. Fixing pins 22 are installed in the holes to fix the inner disc 16 and the outer disc 17. With the above arrangement, through the combined use of the auxiliary holes 21 and the fixing pins 22, the fixed connection between the inner disc 16 and the outer disc 17 is achieved, improving the stability and reliability of the entire device and facilitating the installation and disassembly for the user.

[0059] In summary, the steel pipe support column with adjustable vertical rod spacing for post-cast strips provided by the present utility model solves the problems of poor stability, low bearing capacity, and inability to adjust the height and spacing in the existing post-cast strip support means. Through the innovative adjustable design, while maintaining sufficient stability, the steel pipe support column also has high flexibility and adjustability to meet different engineering requirements. This improvement not only improves work efficiency but also reduces project costs, providing a more reliable support solution for post-cast strip construction. The design of the present utility model is also characterized by being simple and easy to operate, enabling construction workers to quickly get started and reducing training costs and time. At the same time, its sturdy and durable structure also ensures the stability and safety during long-term use. The structure is simple, a small idea solves a general problem, the cost is low, it is convenient and practical, has a wide applicability, and has a high promotion value. In addition, the present utility model can also be used in cooperation with other construction equipment to improve the construction efficiency of the entire construction site. Its unique adjustable design enables the steel pipe support column to adapt to various complex construction environments, ensuring construction safety and quality. In future building construction, this steel pipe support column with adjustable vertical rod spacing will play an increasingly important role and become an indispensable support tool for post-cast strip construction. Its innovative design and excellent performance will lead the development of building support technology and promote the progress of the entire building industry.

Claims

1. A steel pipe support column with adjustable vertical pole spacing for post-casting belts, characterized in that: The invention comprises a group of support columns and a connecting piece connecting the group of support columns, wherein the support columns comprise a vertical pole (4), a gear track (6) is installed in the middle of the vertical pole (4), a connecting pipe (3) is installed on the top of the vertical pole (4), an adjusting nut (2) is sleeved on the top of the connecting pipe (3), the adjusting nut (2) is connected to the top support (1) through a thread, a bottom support is installed at the bottom of the vertical pole (4), a wheel disc (5) is meshed with the gear track (6), a connecting rod of the connecting piece is installed on the wheel disc (5), a group of connecting rods are cross-crossed, a combined disc is installed at the cross position, and the other end of the connecting rod is fixed on the vertical pole (4).

2. A steel pipe support column with adjustable vertical pole spacing for post-casting strips according to claim 1, characterized in that: The connecting tube (3) is hollow inside, and a thread is provided at the lower end thereof. The lower end is connected to the vertical rod (4) via the thread, and an adjusting nut (2) is sleeved on the upper end. The adjusting nut (2) is freely rotatable inside the connecting tube (3).

3. A steel pipe support column with adjustable vertical pole spacing for post-casting strip according to claim 2, characterized in that: The adjusting nut (2) is provided with a thread inside, and is screwed together with the top support (1) through the thread. The lower part of the adjusting nut (2) is sleeved in the connecting pipe (3) and rotates freely.

4. A steel pipe support column with adjustable vertical pole spacing for post-casting strips according to claim 3, characterized in that: A sleeve (7) is provided at the meshing position of the gear track (6) and the wheel disc (5), and a slot penetrating up and down is provided on the side of the sleeve (7), and a connecting rod is inserted into the slot and slides up and down in the slot.

5. A steel pipe support column with adjustable vertical pole spacing for post-casting strips according to claim 4, characterized in that: The bottom support comprises a bottom column (10), the lower end of the vertical rod (4) is screwed to the bottom column (10) via a thread, and the lower end of the bottom column (10) is fixed on the base (11).

6. A steel pipe support column with adjustable vertical pole spacing for post-casting strips according to claim 5, characterized in that: The combined disc comprises an inner disc (16), a group of connecting rods comprising an inner oblique rod (12) and an outer oblique rod (13), the inner oblique rod (12) and the outer oblique rod (13) being cross-shaped, the inner oblique rod (12) being disconnected from the middle, and the disconnected ends being respectively fixed to the two sides of the circumference of the inner disc (16), the outer disc (17) being hollow inside, the inner disc (16) being sleeved therein, the outer oblique rod (13) being also disconnected from the middle, and the disconnected ends being respectively fixed to the two sides of the circumference of the outer disc (17), the lower ends of the inner oblique rod (12) and the outer oblique rod (13) being hingedly fixed to the vertical rod (4) through a fixed support (9), the upper ends of which are hingedly connected to the wheel disc (5), and an outwardly extending limit rod (18) being inserted at the upper part close to the wheel disc (5).

7. A steel pipe support column with adjustable vertical pole spacing for post-casting strips according to claim 6, characterized in that: The inner disc (16) is densely provided with limiting holes (15), the outer disc (17) is provided with a center hole (8) at a position directly opposite to the inner disc (16), the pin (14) is inserted into the center hole (8), the inner disc (16) and the outer disc (17) are relatively fixed, and the outer disc (17) rotates around the inner disc (16).

8. The steel pipe support column with adjustable vertical pole spacing for post-casting strip according to claim 7, characterized in that: The outer circumference of the outer disc (17) is provided with slots, and the disconnected two ends of the inner oblique rod (12) are inserted into the slots and fixed to the inner disc (16).

9. A steel pipe support column with adjustable vertical pole spacing for post-casting strips according to claim 8, characterized in that: A group of waist grooves (19) are provided on the upper and lower parts of the front and back surfaces of the outer disc (17), and the positioning pins (20) pass through the waist grooves (19) and are inserted into the limiting holes (15) of the inner disc (16) to fix the inner disc (16) and the outer disc (17).

10. A steel pipe support column with adjustable vertical pole spacing for post-casting strips according to claim 9, characterized in that: The front and back sides of the outer disc (17) are provided with auxiliary holes (21) between a group of waist grooves (19) and at positions directly opposite to the inner disc (16), and fixing pins (22) are installed in the holes to fix the inner disc (16) and the outer disc (17).

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