A post-cast strip support member

Abstract

This utility model discloses a post-cast strip support component, applicable to the field of building engineering, including a telescopic tube, a limiting ring, and a limiting rod. The telescopic tube includes an inner tube and an outer tube, with several limiting holes on the side of the inner tube near the outer tube. These limiting holes are arranged axially along the inner tube and penetrate radially through it. A connecting part is provided on the side of the outer tube near the inner tube, and the limiting ring is sleeved on the connecting part. A fine-tuning groove is provided on the connecting part, extending axially along the outer tube. The limiting rod passes through the limiting holes and the fine-tuning groove, and then engages with the limiting ring axially along the outer tube. The engagement position of the limiting ring relative to the connecting part is adjustable to change the position of the limiting rod in the fine-tuning groove. The post-cast strip support component provided by this utility model can achieve a first adjustment of the height of the inner tube by adjusting the position between the inner and outer tubes. The fine-tuning groove allows for a second adjustment of the height of the inner tube, improving its applicability and ease of operation.

Description

Technical Field

[0001] This utility model relates to the field of building engineering, and in particular to a post-cast strip support component. Background Technology

[0002] Post-cast strip support components are important supporting structures at the post-cast strip of the basement, providing support for the beams and slabs at the post-cast strip. The quality of the support component system seriously affects the structural quality and safety of the beams and slabs at the post-cast strip and the number of times the reusable materials can be reused. Therefore, the construction quality of the post-cast strip support system is an important factor in controlling the structural quality and safety of the beams and slabs at the post-cast strip and the number of times the reusable materials can be reused.

[0003] In related technologies, the post-cast strip support structure consists of two rows of support frames on each side of the post-cast strip. This system has the following main drawbacks during construction:

[0004] 1. It can easily lead to a secondary need for backfilling. By changing the way the force is applied, it is impossible to restore the deformed slab or beam; it can only prevent further deformation of the beam or slab.

[0005] 2. When pouring concrete into the post-pouring strip, the supporting components of the post-pouring strip need to be loosened, which can easily cause cracks in the beams and slabs.

[0006] 3. The steel pipes, fasteners, and other materials used in the post-cast strip support components take a long time to prepare and are costly.

[0007] Therefore, how to improve the ease of use and turnover of post-cast strip components is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0008] The purpose of this invention is to provide a post-cast strip support component that is convenient for reuse, reduces the risk of beam and slab cracking, and saves costs.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A post-cast strip support component includes a telescopic tube, a limiting ring, and a limiting rod. The telescopic tube includes an inner tube and an outer tube, with a plurality of limiting holes on the side of the inner tube near the outer tube. The limiting holes are arranged axially along the inner tube and penetrate radially through the inner tube. A connecting portion is provided on the side of the outer tube near the inner tube, and the limiting ring is sleeved on the connecting portion. A fine-tuning groove is provided on the connecting portion, extending axially along the outer tube. The limiting rod passes through the limiting holes and the fine-tuning groove and engages with the limiting ring axially along the outer tube. Furthermore, the engagement position of the limiting ring relative to the connecting portion is adjustable to change the position of the limiting rod in the fine-tuning groove.

[0011] On the other hand, the connecting part is externally threaded, and the inner circumference of the limiting ring is provided with an internal thread, which is adapted to the external thread.

[0012] On the other hand, the length of the fine-tuning groove is greater than or equal to the distance between adjacent limiting holes; and the number of fine-tuning grooves is at least two, and they correspond to the positions of the limiting holes on both radial sides of the inner tube respectively.

[0013] On the other hand, the circumference of the limiting ring is provided with at least one rotating ear, and the rotating ear is provided with a mating hole; it also includes a rotating pin, which can be inserted into the mating hole and drive the limiting ring to rotate relative to the outer tube.

[0014] On the other hand, the rotating pin is in the shape of a right-angle corner, and one end of the rotating pin is provided with an anti-detachment part, the size of which is larger than the size of the mating hole.

[0015] On the other hand, it also includes a connecting plate and a connecting assembly. The connecting plate is fixed to the outer periphery of the outer tube and has a plurality of first connecting holes in its circumferential direction. The connecting assembly is located between the connecting plates of two adjacent outer tubes and is detachably connected to the first connecting holes.

[0016] On the other hand, the connecting assembly includes a connecting rod and a plug-in component. Both ends of the connecting rod are provided with second connecting holes, and the second connecting holes are detachably connected to the first connecting holes through the plug-in component.

[0017] On the other hand, each of the first connecting holes is evenly arranged along the circumference of the connecting plate, and the second connecting holes have the same shape and size as the first connecting holes.

[0018] On the other hand, the outer tube is provided with a plurality of connecting discs, each of the connecting discs being arranged along the axial direction of the outer tube, and the positions of the connecting discs on different outer tubes being corresponding.

[0019] On the other hand, there are three telescopic tubes, each located at one of the three vertices of an equilateral triangle.

[0020] The post-cast strip support component provided by this utility model includes a telescopic tube, a limiting ring, and a limiting rod. The telescopic tube includes an inner tube and an outer tube, with a plurality of limiting holes on the side of the inner tube near the outer tube. Each limiting hole is arranged along the axial direction of the inner tube and passes through the inner tube radially. A connecting part is provided on the side of the outer tube near the inner tube, and the limiting ring is sleeved on the connecting part. A fine-tuning groove is provided on the connecting part, which extends along the axial direction of the outer tube. The limiting rod passes through the limiting holes and the fine-tuning groove and engages with the limiting ring along the axial direction of the outer tube. Furthermore, the engagement position of the limiting ring relative to the connecting part is adjustable to change the position of the limiting rod in the fine-tuning groove. The post-cast strip support component provided by this utility model, through the setting of the telescopic tube, can achieve the first adjustment of the height of the inner tube by adjusting the position between the inner tube and the outer tube, thereby effectively supporting post-cast strips of different heights. At the same time, through the setting of the fine-tuning groove, the relative position of the limiting ring and the fine-tuning groove can be changed by adjusting the position of the limiting ring on the connecting part, thereby changing the height of the limiting rod. Since the limiting rod is installed through the limiting hole of the inner tube, the height of the inner tube can be adjusted a second time, improving the applicability and making operation convenient. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of a specific embodiment of the post-cast strip support member provided by this utility model;

[0023] Figure 2 for Figure 1 A partial enlarged view of the post-cast strip support member shown;

[0024] Figure 3 for Figure 1 The diagram shows the structure of the outer tube in the post-cast strip support member;

[0025] Figure 4 for Figure 1 The diagram shows the structure of the limiting ring in the post-cast strip support member;

[0026] Figure 5 for Figure 1 The diagram shows the structure of the rotating pin in the post-cast strip support member.

[0027] Figure 6 for Figure 1 The diagram shows the structure of the connecting plate and connecting assembly in the post-cast strip support member.

[0028] Figure 7 for Figure 1 The application scenario of the post-cast strip support component is shown.

[0029] Figure label:

[0030] Telescopic tube 1; Inner tube 11; Limiting hole 111; Outer tube 12; Connecting part 121; Fine-tuning groove 122; Limiting ring 2; Rotating ear 21; Mating hole 22; Limiting rod 3; Rotating pin 4; Anti-detachment part 41; Connecting plate 5; First connecting hole 51; Connecting assembly 6; Connecting rod 61; Second connecting hole 611; Insertion part 62; Beam plate 7. Detailed Implementation

[0031] The core of this utility model is to provide a post-cast strip support component that can reduce space occupation, speed up turnover, and shorten the construction period.

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Please refer to Figures 1 to 7 , Figure 1 A schematic diagram of a specific embodiment of the post-cast strip support member provided by this utility model; Figure 2 for Figure 1 A partial enlarged view of the post-cast strip support member shown; Figure 3 for Figure 1 The diagram shows the structure of the outer tube in the post-cast strip support member; Figure 4 for Figure 1 The diagram shows the structure of the limiting ring in the post-cast strip support member; Figure 5 for Figure 1 The diagram shows the structure of the rotating pin in the post-cast strip support member. Figure 6 for Figure 1 The diagram shows the structure of the connecting plate and connecting assembly in the post-cast strip support member. Figure 7 for Figure 1 The application scenario of the post-cast strip support component is shown.

[0035] In this embodiment, the post-cast strip support component includes a telescopic tube 1, a limiting ring 2, and a limiting rod 3. The telescopic tube 1 includes an inner tube 11 and an outer tube 12. The inner tube 11 has several limiting holes 111 on the side near the outer tube 12. Each limiting hole 111 is arranged along the axial direction of the inner tube 11 and passes through the inner tube 11 radially. The outer tube 12 has a connecting part 121 on the side near the inner tube 11. The limiting ring 2 is sleeved on the connecting part 121. The connecting part 121 has a fine-tuning groove 122. The fine-tuning groove 122 extends along the axial direction of the outer tube 12. After the limiting rod 3 passes through the limiting holes 111 and the fine-tuning groove 122, it engages with the limiting ring 2 along the axial direction of the outer tube 12. Furthermore, the engagement position of the limiting ring 2 relative to the connecting part 121 is adjustable to change the position of the limiting rod 3 in the fine-tuning groove 122.

[0036] Specifically, the limiting ring 2 is fitted onto the outer tube 12, and the limiting rod 3 passes through the limiting hole 111 of the inner tube 11. The limiting rod 3 is placed on the upper part of the limiting ring 2, thereby limiting the position of the limiting rod 3 and thus the position of the inner tube 11, which limits the total height of the inner tube 11 and the outer tube 12. The height of the limiting ring 2 can be calculated in advance according to the usage environment, and then the limiting ring 2 can be moved to a suitable position in advance. First, the inner tube 11 is inserted into the outer tube 12, and then the limiting rod 3 is installed. The limiting rod 3 passes through the fine-tuning groove 122 and can slide along the fine-tuning groove 122. The limiting rod 3 can be made of steel bars, which are easy to obtain and can be bent at both ends to reduce the space occupied by the limiting rod 3 and reduce the risk of injury to personnel. In actual use, both the inner tube 11 and the outer tube 12 in the telescopic tube 1 extend in the vertical direction.

[0037] This post-cast strip support component, through the setting of the telescopic tube 1, can achieve the first adjustment of the height of the inner tube 11 by adjusting the position between the inner tube 11 and the outer tube 12, thereby effectively supporting post-cast strips of different heights. At the same time, through the setting of the fine-tuning groove 122, the relative position of the limiting ring 2 and the fine-tuning groove 122 can be changed by adjusting the position of the limiting ring 2 on the connecting part 121, thereby changing the height of the limiting rod 3. Since the limiting rod 3 is installed through the limiting hole 111 of the inner tube 11, the height of the inner tube 11 can be adjusted a second time, improving the applicability and making operation convenient.

[0038] In some embodiments, the connecting part 121 is a threaded connection part 121, and the inner circumference of the limiting ring 2 is provided with an internal thread that is compatible with the external thread. Through this threaded connection, on the one hand, the position adjustment of the limiting ring 2 is convenient; on the other hand, after the limiting ring 2 moves to a suitable position, the thread restricts the limiting ring 2 and the outer tube 12, allowing them to be axially positioned along the outer tube 12. Of course, the engagement between the limiting ring 2 and the outer tube 12 can also employ other methods, such as a slide rail and a snap-fit ​​mechanism. Any method that can fix the relative position of the limiting ring 2 and the outer tube 12 and restrict the axial position of the limiting ring 2 within the outer tube 12 is acceptable.

[0039] In some embodiments, the length of the fine-tuning groove 122 is greater than or equal to the distance between adjacent limiting holes 111; and there are at least two fine-tuning grooves 122, which correspond to the positions of the limiting holes 111 on both radial sides of the inner tube 11 respectively. This arrangement allows the limiting rod 3 to extend from the two fine-tuning grooves 122 located on the opposite side of the outer tube 12, and the limiting rod 3 has two contact points with the limiting ring 2, which can ensure the positional stability of the limiting rod 3. In addition, by setting the length of the fine-tuning groove 122 to be greater than or equal to the distance between adjacent limiting holes 111, the length of the telescopic rod can be adjusted to any length. For example, if the distance between adjacent limiting holes 111 is 10cm, then the length of the fine-tuning groove 122 should not be less than 10cm. When the adjustment range is greater than 10cm, the position of the limiting rod 3 can be changed. When the adjustment range is less than 10cm, the position of the limiting ring 2 relative to the fine-tuning groove 122 can be changed.

[0040] In some embodiments, the top of the inner tube 11 is provided with an upper support component for supporting the beam plate 7, and the bottom of the outer tube 12 is provided with a lower support component for contacting the ground; the upper support component and the lower support component are support plates, and the support plates are provided with bolt holes. By setting the support plates, the support stability of the telescopic tube 1 with the ground or beam plate 7 can be guaranteed, and the bolt holes can facilitate the fixing of bolts and make disassembly and assembly convenient.

[0041] In some embodiments, the circumference of the limiting ring 2 is provided with at least one rotating lug 21, and the rotating lug 21 is provided with a mating hole 22; it also includes a rotating pin 4, which can be inserted into the mating hole 22 and drive the limiting ring 2 to rotate relative to the outer tube 12. The axial direction of the mating hole 22 is perpendicular to the axial direction of the limiting ring 2, which facilitates the circumferential rotation of the limiting ring 2. It should be noted that the threaded fit between the limiting ring 2 and the connecting part 121 of the outer tube 12 should be tight to ensure the stability between the limiting ring 2 and the outer tube 12. When the limiting rod 3 is pressed on the limiting ring 2, the limiting ring 2 is not easy to shake.

[0042] In some embodiments, the rotating pin 4 is in the shape of a right-angle corner, and one end of the rotating pin 4 is provided with an anti-detachment part 41, the size of which is larger than the size of the mating hole 22. With this configuration, when the rotating pin 4 does not need to be operated, it can be placed directly on the mating hole 22, reducing the risk of loss. When it is necessary to rotate the limiting ring 2, the right-angle corner structure is used to push the rotating pin 4 and drive the limiting ring 2 to rotate.

[0043] In some embodiments, the system further includes a connecting plate 5 and a connecting assembly 6. The connecting plate 5 is fixed to the outer periphery of the outer tube 12, and the connecting plate 5 has a plurality of first connecting holes 51 in its circumferential direction. The connecting assembly 6 is located between the connecting plates 5 of two adjacent outer tubes 12, and the connecting assembly 6 is detachably connected to the first connecting holes 51. Of course, the connecting plate 5 can also be detachably connected to the outer periphery of the outer tube 12, preferably welded and fixed to the outer tube 12, which facilitates transfer and reduces the number of accessories. The connecting assembly 6 limits the two adjacent outer tubes 12 through the first connecting holes 51, thereby limiting the two adjacent telescopic tubes 1 and improving the strength of the entire post-cast strip support component.

[0044] In some embodiments, the connecting assembly 6 includes a connecting rod 61 and a plug-in component 62. Both ends of the connecting rod 61 are provided with second connecting holes 611, which are detachably connected to the first connecting hole 51 via the plug-in component 62. When the first connecting hole 51 in the connecting plate 5 cannot correspond to the position of the second connecting hole 611, the position of the first connecting hole 51 can be adjusted by rotating the outer tube 12.

[0045] In some embodiments, the first connecting holes 51 are evenly arranged along the circumference of the connecting disk 5, and the second connecting holes 611 have the same shape and size as the first connecting holes 51 to ensure connection stability. Specifically, the first connecting holes 51 and the second connecting holes 611 are preferably strip-shaped holes, with the extension direction of the first connecting holes 51 parallel to the radial direction of the connecting disk 5, and the extension direction of the second connecting holes 611 parallel to the extension direction of the connecting rod 61; the plug-in component 62 is a strip-shaped pin, with one end of the plug-in component 62 being larger than the other end, which facilitates fixing the plug-in component 62 to the first connecting holes 51 and the second connecting holes 611 and prevents it from falling off.

[0046] In some embodiments, the outer tube 12 is provided with a plurality of connecting discs 5, each connecting disc 5 is arranged along the axial direction of the outer tube 12, and the positions of the connecting discs 5 on different outer tubes 12 are corresponding.

[0047] In some embodiments, there are three telescopic tubes 1, each located at one of the three vertices of an equilateral triangle. The stability of the triangle is utilized to improve the stability and support capacity of the post-cast strip support member. Alternatively, there can be four or more telescopic tubes 1, each located at one vertex of a regular polygon to ensure stability; or, provided the usage requirements are met, there can be one or two telescopic tubes 1. Specifically, the post-cast strip support member is a reusable component, and the telescopic tubes 1 can be made of high-strength steel.

[0048] Specifically, the post-cast strip support component is an important supporting structure at the post-cast strip of the basement, providing support for the beams and slabs 7 at the post-cast strip. The quality of the support component system significantly affects the structural quality and safety of the beams and slabs 7 at the post-cast strip and the number of times reusable materials can be used. Therefore, the construction quality of the post-cast strip support system is a crucial factor in controlling the structural quality and safety of the beams and slabs 7 at the post-cast strip and the number of times reusable materials can be used. This post-cast strip support component can effectively ensure the structural quality and safety of the beams and slabs 7 at the post-cast strip and improve the number of times materials can be used. It has a wide range of height adjustment, is easy to install, and through the detachable structure of the inner tube 11 and outer tube 12 in the telescopic tube 1, the detachable connection plate 5 and connecting component 6, and the cooperation of the limiting rod 3 and limiting ring 2, the post-cast strip support component can be easily disassembled, assembled, and reused. It occupies little space, is both aesthetically pleasing and cost-effective, has a fast turnover, strong practicality, saves construction time, and is easy to promote. It also avoids cracking of the beams and slabs 7 due to secondary support.

[0049] In one specific embodiment, the post-cast strip support component includes three socket-type Q345 steel telescopic pipes 1 with adjustable heights ranging from 2.9 to 4.1 m. The outer pipe 12 has a diameter of 60 mm, the inner pipe 11 has a diameter of 48 mm, and the distance between the three telescopic pipes 1 is 30 cm. The wall thickness of both the outer pipe 12 and the inner pipe 11 is 3.0 mm. The three telescopic pipes 1 are connected by a circular connecting plate 5 and a connecting assembly 6. The post-cast strip support component is erected simultaneously with the scaffolding. The process steps are as follows:

[0050] 1. Detailed layout of support positions: Through stress and stability calculations of the support system, the position and spacing of the support components for the post-cast strip are confirmed;

[0051] 2. Erection of Floor Beam and Slab Support System: A socket-type steel pipe support system will be adopted. The support system will be erected according to the floor slab support column layout plan. Before construction, a construction briefing will be conducted. On the floor slab, according to the layout plan, the positions of the support system columns and post-cast strip support components will be marked according to the axis. Black ink will be used to ensure that the marked lines are clear and firm, and to ensure the accuracy of the positions of the support system columns and post-cast strip support components.

[0052] 3. Separate formwork for beams and slabs 7 at the support: According to the drawings and the layout of the support components for the post-pouring strip, separate formwork and timber for beams and slabs 7 should be installed at a position 50cm away from the edge of the post-pouring strip. The formwork and timber should be disconnected from the connected formwork and timber. Separate support is necessary to ensure that the beams and slabs 7 will not be removed together with the bottom formwork of other beams and slabs 7 after the concrete is poured.

[0053] 4. Supporting components for post-cast strips: Based on the location of the post-cast strip support components, set up the post-cast strip support components. Adjust the height according to the inter-story height using the limiting ring 2 to ensure that the top of the post-cast strip support component directly supports the bottom of the beam or slab. The distance between adjacent post-cast strip support components shall not exceed 4.5m, and there must be post-cast strip support components at the bottom of the beam or slab.

[0054] 5. Reinforcement, reinforcement binding, and concrete pouring of beams and slabs 7 on both sides of the post-pouring strip: Reinforcement binding and beam / slab 7 on both sides of the post-pouring strip are carried out according to the construction technical instructions, especially the wire mesh reinforcement at the post-pouring strip, to prevent concrete leakage and subsequent difficulties in treatment. During concrete pouring, the concrete at the post-pouring strip should be vibrated to avoid over-vibration, which could cause concrete segregation.

[0055] 6. Closure of post-pouring strip: Before closure of post-pouring strip, clean and chisel the concrete. When setting up the formwork for post-pouring strip, it is forbidden to remove the supporting components of post-pouring strip or remove the secondary backfill.

[0056] 7. Removal of post-cast strip support components: After the concrete strength of the post-cast strip reaches the design requirements, remove the post-cast strip support components; during removal, rotate the middle adjusting limit ring 2, remove the limit rod 3, knock out the plug-in component 62, and then stack them neatly according to their classification for easy reuse. During removal, it is strictly forbidden to forcibly remove or drop the support components, which may cause them to deform.

[0057] This post-cast strip support component is suitable for supporting beams and slabs 7 with a height of 2.9 to 4.1m. Based on stress calculations, the spacing between components can reach 4.5m, allowing for pedestrian and vehicular traffic and facilitating the transportation of materials to the basement. Furthermore, due to increased strength, only two sets of connecting plates 5 and connecting components 6 are needed, saving a significant amount of reusable materials compared to existing support systems and increasing the number of reusable components. It is highly practical, easy to operate, saves construction time, and is easy to promote. It avoids cracking at the root of beams and slabs 7 due to secondary support, thus ensuring the structural quality and safety of beams and slabs 7. It guarantees the quality of cantilever beams at post-cast strip joints, and the components can be reused, saving materials, improving construction efficiency, shortening the construction period, and demonstrating significant economic benefits.

[0058] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0059] The post-cast strip support component provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A post-cast strip support member, characterized in that, The device includes a telescopic tube (1), a limiting ring (2), and a limiting rod (3). The telescopic tube (1) includes an inner tube (11) and an outer tube (12) that are sleeved on it. The inner tube (11) has a plurality of limiting holes (111) on the side near the outer tube (12). Each limiting hole (111) is arranged along the axial direction of the inner tube (11) and passes through the inner tube (11) radially. The outer tube (12) has a connecting part (121) on the side near the inner tube (11), and the limiting ring (2) is sleeved on the connecting part. (121) On the connecting part (121); a fine-tuning long groove (122) is provided on the connecting part (121), the fine-tuning long groove (122) extends along the axial direction of the outer tube (12), and the limiting rod (3) passes through the limiting hole (111) and the fine-tuning long groove (122) and is engaged with the limiting ring (2) along the axial direction of the outer tube (12); and the engagement position of the limiting ring (2) relative to the connecting part (121) is adjustable to change the position of the limiting rod (3) in the fine-tuning long groove (122); It also includes a connecting plate (5) and a connecting component (6). The connecting plate (5) is fixed to the outer periphery of the outer tube (12), and the connecting plate (5) is provided with a plurality of first connecting holes in the circumferential direction. The connecting component (6) is located between the connecting plates (5) of two adjacent outer tubes (12), and the connecting component (6) is detachably connected to the first connecting hole. The connecting component (6) includes a connecting rod (61) and a plug-in component (62). Both ends of the connecting rod (61) are provided with second connecting holes, and the second connecting holes are detachably connected to the first connecting holes through the plug-in component (62). The first connecting hole and the second connecting hole are strip-shaped holes. The extension direction of the first connecting hole is parallel to the radial direction of the connecting disc (5), and the extension direction of the second connecting hole is parallel to the extension direction of the connecting rod (61). The plug-in component (62) is a strip-shaped pin, and the size of one end of the plug-in component (62) is larger than the size of the other end.

2. The post-cast strip support member according to claim 1, characterized in that, The connecting part (121) has an external thread, and the inner circumference of the limiting ring (2) has an internal thread, which is adapted to the external thread.

3. The post-cast strip support member according to claim 1, characterized in that, The length of the fine-tuning groove (122) is greater than or equal to the distance between adjacent limiting holes (111); and the number of fine-tuning grooves (122) is at least two, and they correspond to the positions of the limiting holes (111) on both radial sides of the inner tube (11).

4. The post-cast strip support member according to claim 1, characterized in that, The circumference of the limiting ring (2) is provided with at least one rotating ear (21), and the rotating ear (21) is provided with a mating hole (22); it also includes a rotating pin (4), which can be inserted into the mating hole (22) and drive the limiting ring (2) to rotate relative to the outer tube (12).

5. The post-cast strip support member according to claim 4, characterized in that, The rotating pin (4) is in the shape of a right angle corner, and one end of the rotating pin (4) is provided with an anti-detachment part (41), the size of the anti-detachment part (41) is larger than the size of the mating hole (22).

6. The post-cast strip support member according to claim 1, characterized in that, Each of the first connecting holes (51) is evenly arranged along the circumference of the connecting disk (5), and the second connecting hole (611) has the same shape and size as the first connecting hole (51).

7. The post-cast strip support member according to claim 6, characterized in that, The outer tube (12) is provided with a plurality of connecting discs (5), each connecting disc (5) is arranged along the axial direction of the outer tube (12), and the positions of the connecting discs (5) on different outer tubes (12) are corresponding.

8. The post-cast strip support member according to claim 6, characterized in that, The telescopic tubes (1) are all three in number and are located at the three vertices of an equilateral triangle.

Images