Pouring forming structure of light guide well

Abstract

The invention relates to the technical field of light guide well forming, and discloses a light guide well pouring forming structure which comprises an annular inner formwork and an outer formwork arranged on the periphery of the inner formwork in a sleeving mode, the outer formwork is arranged around the periphery of the inner formwork, and an inner cavity is defined by the inner formwork. An annular area for pouring concrete to form the light guide well is formed between the inner template and the outer template; the inner formwork comprises a plurality of curved plates bent transversely, the curved plates are sequentially arranged in a surrounding mode, a top connecting structure is arranged between every two adjacent curved plates, and the tops of the adjacent curved plates are relatively fixed through the top connecting structures. An inner supporting structure is arranged in the inner cavity, the inner supporting structure is provided with a plurality of inner supporting rods swinging inwards or outwards, and the multiple inner supporting rods correspondingly abut against the multiple curved plates from inside to outside to limit the bottoms of the curved plates to be folded inwards; and through the arrangement of the inner formwork, the outer formwork and the inner supporting structure, the forming effect of the light guide well can be effectively improved, and the requirement for high-quality forming of the light guide well in modern building engineering is met.

Description

Technical Field

[0001] This invention patent relates to the technical field of optical well forming, and more specifically, to the casting and forming structure of optical wells. Background Technology

[0002] In modern construction engineering, light guide shafts are widely used in various buildings as an effective lighting facility. The structure of light guide shafts is usually quite complex, and their molding quality has a crucial impact on the subsequent lighting effect and the overall structural stability.

[0003] In the existing technology, the templates for casting optical fiber wells mostly adopt simple straight plate splicing or fixed shape integral templates. When faced with the complex geometry of optical fiber wells, especially ring or other irregular structures, such templates are difficult to meet the requirements of precise fitting.

[0004] During the concrete pouring process, due to the large lateral pressure of the concrete, simple connection methods can easily lead to deformation and misalignment of the formwork. For example, during the vertical pouring of the light guide well, the bottom of the formwork may shrink inward or expand outward due to insufficient support, resulting in uneven cross-sectional dimensions of the light guide well, which in turn affects its lighting effect and structural stability.

[0005] Furthermore, in existing technologies, the support methods for inner formwork are relatively simple, usually involving external fixation. This cannot effectively resist the inward contraction force generated by the concrete during pouring and solidification. Taking a common light guide well as an example, when concrete is poured from the top down, the impact force and lateral pressure of the concrete will be concentrated in a local area of ​​the inner formwork. Without a reasonable internal support structure, the inner formwork is prone to deformation, resulting in a reduction in the internal dimensions of the light guide well, or even quality problems such as honeycomb and pitted surfaces, which seriously affect the forming quality of the light guide well. Summary of the Invention

[0006] The purpose of this invention is to provide a casting and molding structure for optical guide wells, aiming to solve the problem of poor casting and molding effect of optical guide wells in the prior art.

[0007] The present invention is implemented as follows: the light guide well casting and molding structure includes an inner template in the shape of a ring and an outer template sleeved on the outer periphery of the inner template. The outer template is arranged around the outer periphery of the inner template. The inner template encloses and forms an inner cavity. A ring area for casting concrete is formed between the inner template and the outer template to form the light guide well.

[0008] The inner template includes multiple horizontally curved panels, which are arranged sequentially around each other. There is a top connection structure between adjacent curved panels, which fixes the tops of adjacent curved panels relative to each other.

[0009] The inner cavity is provided with an inner support structure, which has multiple inner support rods that swing inward or outward. The multiple inner support rods abut against multiple curved panels from the inside out, restricting the bottom of the curved panels from closing inward.

[0010] Furthermore, each side of the curved panel has a side edge, and there is a longitudinally arranged side gap between adjacent side edges of the curved panel, and the side gap is filled and closed.

[0011] Furthermore, the inner and outer sides of the side spacer each have side openings, the side spacer is filled with foam blocks, the foam blocks seal the side spacer, and the side openings are covered with tape, the tape sealing the side openings so that the foam blocks are fixed in the side spacer.

[0012] Furthermore, the top of the curved panel has a top curved plate, which is curved along the bending direction of the curved panel. There is a top gap between the ends of adjacent top curved plates. The top curved plate is provided with a hanging ring connected to a hanging rope. The top connecting structure spans across the top gap and is connected to adjacent top curved plates respectively, so that the tops of adjacent curved panels are relatively fixed.

[0013] Furthermore, the top connecting structure includes a connecting plate with a transverse section in the middle, and connecting sections extending from both ends of the transverse section; the transverse section spans across the top gap and is suspended in the air, and the connecting sections abut against the top curved plate; a bolt is inserted through the connecting section, and the bolt passes through the top curved plate to fix the connecting section to the top curved plate so that the tops of adjacent curved plates are relatively fixed.

[0014] Furthermore, the bottom of the curved panel is provided with a bottom curved plate, which is curved along the bending direction of the curved panel and is aligned vertically with the top curved plate; the inner wall of the curved panel is provided with a plurality of longitudinally arranged reinforcing plates, the outer side of the reinforcing plates abutting against the inner wall of the curved panel, the inner side of the reinforcing plates extending toward the inner cavity, the top of the reinforcing plates abutting against the top curved plate, and the bottom of the reinforcing plates abutting against the bottom curved plate.

[0015] The inner support rod abuts against the reinforcing plate from the inside out. The inner side of the reinforcing plate has a positioning groove that penetrates the inner side of the reinforcing plate and forms an upwardly inclined inner opening. The inner support rod is embedded in the positioning groove through the inner opening.

[0016] Furthermore, the internal support structure includes a longitudinally arranged rotating rod, the lower part of which has a threaded section, and the outer periphery of which is formed with an external thread; a fixed plate is provided at the bottom of the threaded section, through which the threaded section moves; a longitudinally movable moving plate is provided at the upper part of the threaded section, and a nut is provided on the moving plate, which is threadedly connected to the threaded section, through which the threaded section moves.

[0017] The movable disk is connected to multiple linkage structures, which are arranged at intervals around the circumference of the rotating rod. The outer ends of the linkage structures are connected to the inner support rod. When the linkage structures are lowered into the inner cavity and the rotating rod is rotated in the forward direction, the nut causes the movable disk to move downward relative to the fixed disk, and the inner support rod swings outward. When the rotating rod is rotated in the reverse direction, the nut causes the movable disk to move upward relative to the fixed disk, and the inner support rod swings inward.

[0018] Furthermore, the movable disk is provided with multiple upper connecting strips, and the fixed disk is provided with multiple lower connecting strips. The multiple upper and lower connecting strips are arranged at intervals around the circumference of the rotating rod. The connecting rod structure includes an upper swing rod and a lower swing rod. The inner end of the upper swing rod is hinged to the upper connecting strip, and the inner support rod is connected to the outer end of the upper swing rod. The inner end of the lower swing rod is hinged to the lower connecting strip, and the outer end of the lower swing rod is hinged to the middle of the upper swing rod.

[0019] When the rotating rod rotates in the forward direction, the nut and the moving disc move downwards, and the upper and lower swing rods swing outwards respectively, causing the inner support rod to swing outwards; when the rotating rod rotates in the reverse direction, the nut and the moving disc move upwards, and the upper and lower swing rods swing inwards respectively, causing the inner support rod to swing inwards.

[0020] Furthermore, a longitudinally arranged elastic column is connected between the upper connecting strip and the lower connecting strip. The upper end of the elastic column is connected to the upper connecting strip, and the lower end of the elastic column is connected to the lower connecting strip. The elastic column is under compression and bending deformation, and the middle part of the elastic column bends outward to form a protruding position.

[0021] Furthermore, the outer end of the upper swing rod is provided with a positioning cylinder, the middle part of the inner support rod is movably inserted in the positioning cylinder, the positioning cylinder is provided with an arc-shaped guide groove, the middle part of the inner support rod is provided with a guide block, the guide block movably passes through the guide groove, and when the guide block abuts against the end of the guide groove, the inner support rod rotates relative to the positioning cylinder to the limit position.

[0022] An elastic layer is sleeved in the middle of the inner support rod. The elastic layer is arranged around the circumference of the inner support rod and is fixedly connected to the inner side wall of the positioning cylinder. When the inner support rod rotates in place relative to the positioning cylinder, the guide block moves along the guide groove, and the elastic layer is torsional and deformed.

[0023] Compared with the prior art, the optical guide well casting and molding structure provided by the present invention has the following technical advantages:

[0024] 1) By setting up inner and outer ring-shaped templates, the entire template system is subjected to more uniform stress when bearing the lateral pressure of concrete, and the stability is significantly enhanced. This effectively prevents the template from shifting or deforming during the pouring process, thereby ensuring the forming accuracy and quality of the light guide well.

[0025] 2) The inner formwork uses multiple horizontally curved panels arranged in sequence to closely fit the ring construction requirements of the light guide well, ensuring the smoothness and dimensional accuracy of the inner wall of the light guide well. The top connection structure between adjacent curved panels further strengthens the integrity of the inner formwork, enabling it to bear the pressure as a whole during the concrete pouring process, avoiding deformation of the formwork due to uneven local stress, and avoiding uneven cross-sectional dimensions of the light guide well.

[0026] 3) The internal support structure in the inner cavity is the key to solving the problem of poor casting effect of the light guide well. Its multiple swingable internal support rods correspond to multiple curved panels from the inside out, providing strong support for the inner formwork from the inside. This effectively restricts the bottom of the curved panels from shrinking inward. In this way, it can well balance the inward shrinking force of the concrete on the inner formwork, prevent the inner formwork from deforming due to stress, ensure that the shape and size of the light guide well meet the requirements, and effectively avoid quality problems such as honeycomb and pitting caused by formwork deformation, thereby improving the forming quality of the light guide well. Attached Figure Description

[0027] Figure 1 This is a cross-sectional structural diagram of the inner and outer templates provided by the present invention;

[0028] Figure 2 This is a partial front view of the top curved plate provided by the present invention;

[0029] Figure 3 This is a cross-sectional schematic diagram of the reinforcing plate provided by the present invention;

[0030] Figure 4 This is a planar schematic diagram of the internal support structure provided by the present invention;

[0031] Figure 5 This is a simplified schematic diagram of the guide block provided by the present invention;

[0032] Figure 6This is a cross-sectional view of the middle part of the support rod provided by the present invention;

[0033] In the figure: outer template 100, inner cavity 101, curved panel 102, annular area 103, top curved plate 104, lifting ring 105, top connecting structure 106, bolt 107, reinforcing plate 108, inner opening 109;

[0034] Inner support rod 200, rotating rod 201, threaded section 202, fixed plate 203, moving plate 204, nut 205, upper connecting bar 206, lower connecting bar 207, upper swing rod 208, lower swing rod 209;

[0035] Elastic column 300, protrusion 301, positioning cylinder 302, guide block 303, elastic layer 304. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0037] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0038] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0039] Reference Figure 1-6 The image shown is a preferred embodiment of the present invention.

[0040] The light guide well casting and molding structure includes an inner template in the shape of a ring and an outer template 100 fitted around the outer periphery of the inner template. The outer template 100 is arranged around the outer periphery of the inner template, and the inner template encloses to form an inner cavity 101. An annular area 103 for casting concrete is formed between the inner template and the outer template 100 to form the light guide well.

[0041] The inner template includes multiple laterally curved panels 102, which are arranged sequentially around each other. There is a top connection structure 106 between adjacent curved panels 102, which fixes the tops of adjacent curved panels 102 relative to each other.

[0042] The inner cavity 101 is provided with an inner support structure, which has multiple inner support rods 200 that swing inward or outward. The multiple inner support rods 200 abut against multiple curved panels 102 from the inside out, restricting the bottom of the curved panels 102 to close inward.

[0043] The above-mentioned optical fiber well casting structure has the following technical advantages:

[0044] 1) By setting the inner and outer ring templates 100, the entire template system is more uniformly stressed when subjected to the lateral pressure of concrete, and the stability is significantly enhanced. This effectively prevents the template from shifting or deforming during the pouring process, thereby ensuring the forming accuracy and quality of the light guide well.

[0045] 2) The inner formwork adopts multiple horizontally curved panels 102 arranged in sequence around the ring, which can closely fit the ring construction requirements of the light guide well, ensuring the smoothness and dimensional accuracy of the inner wall of the light guide well. The top connection structure 106 between adjacent curved panels 102 further strengthens the integrity of the inner formwork, so that it can bear the pressure as a whole during the concrete pouring process, avoiding the deformation of the formwork due to uneven local stress, and avoiding the uneven cross-sectional dimensions of the light guide well.

[0046] 3) The internal support structure in the inner cavity 101 is the key to solving the poor casting effect of the light guide well. Its multiple swingable internal support rods 200 correspond to multiple curved panels 102 from the inside out, providing strong support for the inner template from the inside. This effectively restricts the bottom of the curved panel 102 from shrinking inward. In this way, the inward shrinking force generated by the concrete on the inner template can be well balanced, preventing the inner template from deforming due to stress. This ensures that the shape and size of the light guide well meet the requirements, effectively avoiding quality problems such as honeycomb and pitted surface caused by template deformation, thereby improving the forming quality of the light guide well.

[0047] In this embodiment, the curved panel 102 has side edges on both sides, and there are longitudinally arranged side gaps between adjacent side edges of the curved panel 102, which are filled and closed.

[0048] This prevents concrete from leaking through the side gaps during pouring, ensuring the integrity of the light guide well. By filling and sealing the side gaps, the sealing performance of the template system is improved, resulting in a smoother surface and higher dimensional accuracy of the poured light guide well. This avoids poor casting results caused by gaps between templates.

[0049] In this embodiment, the inner and outer sides of the side partition have side openings, the side partition is filled with foam blocks, the foam blocks seal the side partition, and the side openings are covered with tape, which closes the side openings so that the foam blocks are fixed in the side partition.

[0050] The combination of foam blocks and tape not only enhances the sealing of the side gaps, but the foam blocks also act as a buffer, reducing the impact on the formwork during concrete pouring, thereby improving the forming quality of the light guide well and resulting in a better casting effect.

[0051] In this embodiment, the top of the curved panel 102 has a top curved plate 104, which is arranged to bend along the bending direction of the curved panel 102. There is a top gap between the ends of adjacent top curved plates 104. A hanging ring 105 connected to a hanging rope is provided on the top curved plate 104. The top connecting structure 106 spans across the top gap and is connected to the adjacent top curved plates 104 respectively, so that the tops of the adjacent curved panels 102 are relatively fixed.

[0052] The top connection structure 106 achieves a stable connection between the tops of adjacent curved panels 102, enhancing the overall integrity of the inner template and making the template more stable when subjected to concrete pressure. This avoids the problem of uneven cross-sectional dimensions of the light guide well caused by top deformation, thereby improving the forming effect of the light guide well.

[0053] In this embodiment, the top connecting structure 106 includes a connecting plate with a cross section in the middle and connecting sections extending from both ends of the cross section. The cross section spans the top gap and is suspended. The connecting sections abut against the top curved plate 104. A bolt 107 passes through the connecting section and passes through the top curved plate 104 to fix the connecting section to the top curved plate 104 so that the tops of adjacent curved plates 102 are relatively fixed.

[0054] By using bolts 107 and connecting plates, a firm connection is achieved at the top of adjacent curved panels 102. This detachable connection method not only facilitates construction operations but also ensures the connection stability of the template during repeated use, thus improving the forming quality of the light guide well.

[0055] In this embodiment, the bottom of the curved panel 102 is provided with a bottom curved plate, which is bent along the bending direction of the curved panel 102. The bottom curved plate and the top curved plate 104 are aligned vertically. The inner sidewall of the curved panel 102 is provided with a plurality of longitudinally arranged reinforcing plates 108. The outer side of the reinforcing plate 108 is connected to the inner sidewall of the curved panel 102, and the inner side of the reinforcing plate 108 extends toward the inner cavity 101. The top of the reinforcing plate 108 is connected to the top curved plate 104, and the bottom of the reinforcing plate 108 is connected to the bottom curved plate.

[0056] The inner support rod 200 abuts against the reinforcing plate 108 from the inside out. The inner side of the reinforcing plate 108 has a positioning groove that penetrates the inner side of the reinforcing plate 108, forming an upwardly inclined inner opening 109. The inner support rod 200 is embedded in the positioning groove through the inner opening 109.

[0057] By setting the reinforcing plate 108, the longitudinal strength of the curved panel 102 is improved, making it less prone to deformation when subjected to concrete pressure. The cooperation between the inner strut 200 and the reinforcing plate 108 further enhances the stability of the curved panel 102 and ensures the forming accuracy of the light guide well.

[0058] In this embodiment, the internal support structure includes a longitudinally arranged rotating rod 201. The lower part of the rotating rod 201 has a threaded section 202, and the outer periphery of the threaded section 202 is formed with external threads. A fixed disk 203 is provided at the bottom of the threaded section 202, and the threaded section 202 moves through the fixed disk 203. A longitudinally movable disk 204 is provided at the upper part of the threaded section 202, and a nut 205 is provided on the movable disk 204. The nut 205 is threadedly connected to the threaded section 202, and the threaded section 202 moves through the movable disk 204.

[0059] Multiple linkage structures are connected to the movable disk 204. These linkage structures are arranged circumferentially around the rotating rod 201, and the outer ends of the linkage structures are connected to inner support rods 200. When the multiple linkage structures are lowered into the inner cavity 101, rotating the rotating rod 201 in the forward direction causes the nut 205 to drive the movable disk 204 to move downward relative to the fixed disk 203, and the inner support rods 200 to swing outward. When rotating the rotating rod 201 in the reverse direction, the nut 205 drives the movable disk 204 to move upward relative to the fixed disk 203, and the inner support rods 200 to swing inward.

[0060] This internal support structure can flexibly adjust the swing direction and force of the internal support rod 200 according to the stress conditions during the casting process of the light guide well, effectively balance the pressure of the concrete on the inner formwork, prevent the formwork from deforming, and ensure the forming effect of the light guide well.

[0061] In this embodiment, the movable disk 204 is provided with a plurality of upper connecting strips 206, and the fixed disk 203 is provided with a plurality of lower connecting strips 207. The plurality of upper connecting strips 206 and lower connecting strips 207 are arranged around the circumference of the rotating rod 201 at intervals. The connecting rod structure includes an upper swing rod 208 and a lower swing rod 209. The inner end of the upper swing rod 208 is hinged to the upper connecting strip 206, and the inner support rod 200 is connected to the outer end of the upper swing rod 208. The inner end of the lower swing rod 209 is hinged to the lower connecting strip 207, and the outer end of the lower swing rod 209 is hinged to the middle part of the upper swing rod 208.

[0062] When the rotating rod 201 rotates in the forward direction, the nut 205 and the moving disk 204 move downward, and the upper swing rod 208 and the lower swing rod 209 swing outward respectively, causing the inner support rod 200 to swing outward; when the rotating rod 201 rotates in the reverse direction, the nut 205 and the moving disk 204 move upward, and the upper swing rod 208 and the lower swing rod 209 swing inward respectively, causing the inner support rod 200 to swing inward.

[0063] Through the linkage structure of the upper swing rod 208, the lower swing rod 209 and the inner support rod 200, the inner support rod 200 is precisely controlled, which can better adapt to the stress changes during the casting process of the light guide well, improve the stability of the template system, and thus improve the forming quality of the light guide well.

[0064] In this embodiment, a longitudinally arranged elastic column 300 is connected between the upper connecting strip 206 and the lower connecting strip 207. The upper end of the elastic column 300 is connected to the upper connecting strip 206, and the lower end of the elastic column 300 is connected to the lower connecting strip 207. The elastic column 300 is under compression and bending deformation, and the middle part of the elastic column 300 bends outward and protrudes to form a protrusion 301.

[0065] The use of elastic columns 300 provides a certain degree of elastic support for the linkage structure, enabling it to buffer and absorb some of the impact force of the concrete during the concrete pouring process, thereby reducing the vibration of the entire formwork and ensuring the forming accuracy of the light guide well.

[0066] In this embodiment, the outer end of the upper swing rod is provided with a positioning cylinder 302, the middle part of the inner support rod 200 is movably inserted in the positioning cylinder 302, the positioning cylinder 302 is provided with an arc-shaped curved guide groove, the middle part of the inner support rod 200 is provided with a guide block 303, the guide block 303 moves through the guide groove, and when the guide block 303 abuts against the end of the guide groove, the inner support rod 200 rotates relative to the positioning cylinder 302 to the limit position.

[0067] An elastic layer 304 is sleeved in the middle of the inner support rod 200. The elastic layer 304 is arranged around the circumference of the inner support rod 200 and is fixedly connected to the inner side wall of the positioning cylinder 302. When the inner support rod 200 rotates in place relative to the positioning cylinder 302, the guide block 303 moves along the guide groove, and the elastic layer 304 is torsionally deformed.

[0068] This allows the inner support rod 200 to be finely adjusted when it comes into contact with the curved panel 102, better adapting to the shape of the curved panel 102 and ensuring close contact between the inner support rod 200 and the curved panel 102, thereby improving the stability of the inner template and further enhancing the forming quality of the light guide well.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cast-in-place structure for a light guide well, characterized in that, It includes an inner template in the shape of a ring and an outer template fitted around the outer periphery of the inner template. The outer template is arranged around the outer periphery of the inner template. The inner template encloses and forms an inner cavity. A ring-shaped area for pouring concrete is formed between the inner template and the outer template to form the light guide well. The inner template includes multiple horizontally curved panels, which are arranged sequentially around each other. There is a top connection structure between adjacent curved panels, which fixes the tops of adjacent curved panels relative to each other. The inner cavity is provided with an inner support structure, which has multiple inner support rods that swing inward or outward. The multiple inner support rods abut against multiple curved panels from the inside out, restricting the bottom of the curved panels from closing inward.

2. The optical guide well casting structure as described in claim 1, characterized in that, The curved panel has side edges on both sides, and there are longitudinally arranged side gaps between adjacent side edges of the curved panel, and the side gaps are filled and closed.

3. The optical guide well casting structure as described in claim 2, characterized in that, The side spacer has side openings on its inner and outer sides, and the side spacer is filled with foam blocks that seal the side spacer. The side openings are covered with tape, which closes the side openings to fix the foam blocks in the side spacer.

4. The optical guide well casting structure as described in claim 1, characterized in that, The curved panel has a top curved plate at its top, which is curved along the bending direction of the curved panel. There is a top gap between the ends of adjacent top curved plates. The top curved plate is provided with a hanging ring connected to a hanging rope. The top connecting structure spans across the top gap and is connected to adjacent top curved plates respectively, so that the tops of adjacent curved panels are relatively fixed.

5. The optical guide well casting structure as described in claim 1, characterized in that, The top connection structure includes a connecting plate with a transverse section in the middle and connecting sections extending from both ends of the transverse section. The transverse section spans the top gap and is suspended in the air. The connecting sections abut against the top curved plate. Bolts are inserted through the connecting sections and pass through the top curved plate to fix the connecting sections to the top curved plate so that the tops of adjacent curved plates are relatively fixed.

6. The optical guide well casting structure as described in claim 1, characterized in that, The bottom of the curved panel is provided with a bottom curved plate, which is curved along the bending direction of the curved panel and is aligned vertically with the top curved plate; the inner sidewall of the curved panel is provided with a plurality of longitudinally arranged reinforcing plates, the outer side of the reinforcing plates is abutted against the inner sidewall of the curved panel, the inner side of the reinforcing plates extends toward the inner cavity, the top of the reinforcing plates is connected to the top curved plate, and the bottom of the reinforcing plates is connected to the bottom curved plate. The inner support rod abuts against the reinforcing plate from the inside out. The inner side of the reinforcing plate has a positioning groove that penetrates the inner side of the reinforcing plate and forms an upwardly inclined inner opening. The inner support rod is embedded in the positioning groove through the inner opening.

7. The optical guide well casting structure as described in any one of claims 1-6, characterized in that, The internal support structure includes a longitudinally arranged rotating rod, the lower part of which has a threaded section, and the outer periphery of which is formed with external threads; a fixed plate is provided at the bottom of the threaded section, through which the threaded section moves; a longitudinally movable moving plate is provided at the upper part of the threaded section, and a nut is provided on the moving plate, which is threadedly connected to the threaded section, through which the threaded section moves. The movable disk is connected to multiple linkage structures, which are arranged at intervals around the circumference of the rotating rod. The outer ends of the linkage structures are connected to the inner support rod. When the linkage structures are lowered into the inner cavity and the rotating rod is rotated in the forward direction, the nut causes the movable disk to move downward relative to the fixed disk, and the inner support rod swings outward. When the rotating rod is rotated in the reverse direction, the nut causes the movable disk to move upward relative to the fixed disk, and the inner support rod swings inward.

8. The optical guide well casting structure as described in claim 7, characterized in that, The movable disk is provided with multiple upper connecting strips, and the fixed disk is provided with multiple lower connecting strips. The multiple upper and lower connecting strips are arranged at intervals around the circumference of the rotating rod. The connecting rod structure includes an upper swing rod and a lower swing rod. The inner end of the upper swing rod is hinged to the upper connecting strip, and the inner support rod is connected to the outer end of the upper swing rod. The inner end of the lower swing rod is hinged to the lower connecting strip, and the outer end of the lower swing rod is hinged to the middle of the upper swing rod. When the rotating rod rotates in the forward direction, the nut and the moving disc move downwards, and the upper and lower swing rods swing outwards respectively, causing the inner support rod to swing outwards; when the rotating rod rotates in the reverse direction, the nut and the moving disc move upwards, and the upper and lower swing rods swing inwards respectively, causing the inner support rod to swing inwards.

9. The optical guide well casting structure as described in claim 8, characterized in that, A longitudinally arranged elastic column is connected between the upper connecting strip and the lower connecting strip. The upper end of the elastic column is connected to the upper connecting strip, and the lower end of the elastic column is connected to the lower connecting strip. The elastic column is under compression and bending deformation, and the middle part of the elastic column bends outward to form a protrusion.

10. The optical guide well casting structure as described in claim 8, characterized in that, The outer end of the upper swing rod is provided with a positioning cylinder, the middle part of the inner support rod is movably inserted in the positioning cylinder, the positioning cylinder is provided with an arc-shaped curved guide groove, the middle part of the inner support rod is provided with a guide block, the guide block movably passes through the guide groove, and when the guide block abuts against the end of the guide groove, the inner support rod rotates relative to the positioning cylinder to the limit position. An elastic layer is sleeved in the middle of the inner support rod. The elastic layer is arranged around the circumference of the inner support rod and is fixedly connected to the inner side wall of the positioning cylinder. When the inner support rod rotates in place relative to the positioning cylinder, the guide block moves along the guide groove, and the elastic layer is torsional and deformed.

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