Inner support structure and method for preventing deformation of reinforcement cage in transportation process

Abstract

The invention provides an inner supporting structure and method for preventing deformation of a reinforcement cage in the transportation process, and relates to the technical field of reinforcement cage transportation, the inner supporting structure comprises a three-fork connecting piece, an elastic telescopic supporting rod and two fixed supporting rods, the three-fork connecting piece is connected with the elastic telescopic supporting rod and the two fixed supporting rods, and the three-fork connecting piece is connected with the elastic telescopic supporting rod and the two fixed supporting rods; the inner supporting structure can be fixed in the reinforcement cage by adjusting the elasticity of the elastic telescopic supporting rod, stable supporting of the reinforcement cage is achieved, loosening is avoided, the three-fork type single elastic supporting structure is adopted, disassembly and assembly are convenient, meanwhile, supporting of the reinforcement cage is more stable, and the service life of the reinforcement cage is prolonged. The problems that an existing supporting structure is inconvenient to disassemble and assemble and unstable in supporting are effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of steel cage transportation, and in particular to an internal support structure and a method thereof for preventing the steel cage from being deformed during transportation. Background Art

[0002] In the field of modern civil engineering, steel cage, as an important structural reinforcement material, is widely used in bridges, tunnels, high-rise buildings, underground pipe galleries and foundation engineering. It not only improves the bearing capacity of engineering structures, but also enhances the stability and durability of the structure, and is an indispensable part of modern architecture.

[0003] After the steel cage is manufactured, it needs to be transported to the construction site. At present, reinforcing bars and internal steel supports are set inside the pier and pile foundation steel cages to prevent deformation of the steel cage during transportation. In addition, some steel cages at the construction site are not equipped with internal steel supports, which seriously affects the quality of the pile foundation and pier. Internal steel supports are set in the steel cage, and the internal supports are knocked out before the steel cage is lowered. Usually, the internal steel supports are welded to the reinforcing bars. The welding process is complicated and difficult to recycle. It not only consumes a lot of steel bars, but also affects the steel cage during the knocking process, and even knocks the welded main bars loose.

[0004] Some studies have also added telescopic rods and central axes to the inner support steel bars to recycle the inner support steel bars, but in actual application, there are:

[0005] 1. The problem of unstable internal support. During transportation, the internal support may become loose and fall off, causing the steel cage to lose support and deform.

[0006] 2. It is inconvenient to use, and specific external tools are required to lock or loosen the internal support. Summary of the invention

[0007] The embodiments of the present invention provide an internal support structure and method for preventing deformation of a steel cage during transportation. The structure adopts a three-pronged single elastic support structure, which is not only convenient for disassembly and assembly, but also provides more stable support for the steel cage, effectively solving the above-mentioned problems of inconvenient disassembly and assembly and unstable support of the existing support structure.

[0008] In view of the above problems, the technical solution proposed by the present invention is:

[0009] An internal support structure for preventing a steel cage from deforming during transportation, comprising:

[0010] A three-pronged connecting member, comprising a support rod a and two support rods b, wherein the support rod a and the two support rods b are connected to each other to form a three-pronged structure;

[0011] An elastic telescopic support rod, comprising a main rod a and a main rod b, wherein the length of the main rod a is greater than the length of the main rod b, the head end of the main rod a is connected to the end of the main rod b by an elastic telescopic adjuster, which is suitable for adjusting the elasticity of the elastic telescopic support rod, and the head end of the main rod b is connected to a support plate a;

[0012] The fixed support rod comprises a sub-rod, wherein a folding mechanism is provided between the end of the sub-rod and the support rod b for folding or unfolding the sub-rod, and the head end of the sub-rod is connected to a support plate b.

[0013] In order to better implement the technical solution of the present invention, the following technical measures are also adopted.

[0014] Furthermore, the elastic telescopic adjuster includes a spring box and two elastic mechanisms, the two elastic mechanisms are symmetrically arranged inside the spring box, the end of the main rod b is connected to the elastic mechanism located at the head end of the spring box, the head end of the main rod a is connected to the elastic mechanism located at the end of the spring box, and an elastic telescopic adjustment mechanism is provided between the two elastic mechanisms, which are respectively connected to the two elastic mechanisms, and the elastic telescopic adjustment mechanism is threadedly connected with a screw rod, and the elastic mechanism is squeezed by adjusting the position of the elastic telescopic adjustment mechanism on the screw rod to adjust the elasticity of the elastic telescopic support rod.

[0015] Furthermore, the elastic mechanism includes a guide slider and a convex slider, the two guide sliders are respectively connected to the main rod a and the main rod b, a compression spring is provided between the guide slider and the convex slider, a guide rod is provided on the plane of the convex slider, and the two guide rods penetrate the guide sliders and are respectively immersed in the cavities of the main rod a and the main rod b.

[0016] Furthermore, the elastic telescopic adjustment mechanism includes an extrusion slider and a threaded sleeve that is abutted against it, the screw rod passes through the spring box, and two extrusion sliders and the threaded sleeves are arranged in pairs on the screw rod, wherein the extrusion slider is slidably connected to the screw rod, the threaded sleeve is threadedly connected to the screw rod, and the extrusion slider is in abutment against the convex surface of the convex slider.

[0017] Furthermore, the folding mechanism includes a sleeve seat connected to the support rod b, the sleeve seat has a guide groove and an opening, a connecting column is coaxially arranged inside the sleeve seat, the connecting column has a protrusion whose size matches the guide groove, the protrusion is immersed in the guide groove and slidably connected thereto, and a fixing structure is provided at the end of the sleeve seat to limit the position of the protrusion and fix the position of the secondary rod.

[0018] Furthermore, one side of the guide groove is set as a rotational folding point, and the other side is set as a fixed point.

[0019] Furthermore, the fixing structure includes a card plate, which is telescopically arranged inside the side wall at the fixing point of the guide groove. A spring ring is provided on the outside of the sleeve seat, and the spring ring is connected to the card plate to drive the card plate to extend and retract along the axial direction of the sleeve seat.

[0020] Furthermore, a side of the clamping plate facing the projection sliding into the fixing point is arranged as an inclined surface.

[0021] Furthermore, an elastic member is provided between the spring shift ring and the sleeve seat, and the elastic member is squeezed when the telescopic spring shift ring is shifted to move axially along the sleeve seat. After being released, the elastic member can drive the spring shift ring to reset.

[0022] A method for preventing a steel cage from deforming during transportation comprises the following steps:

[0023] Expand the inner support structure in the steel cage, and rotate the inner support structure so that the elastic telescopic support rod is close to a side that is easy to adjust;

[0024] The support plate a and the support plate b are respectively brought into contact with the steel cage;

[0025] Adjust the elastic force of the elastic telescopic support rod and collect the pressure data between the support plate a and the steel cage;

[0026] Determine the elastic force of the elastic telescopic support rod at this time according to the collected pressure data;

[0027] The adjustment is completed after the elastic force of the elastic telescopic support rod reaches a set threshold.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] 1. The difference from the existing support structure is that a three-pronged single elastic support structure is adopted. Since an adjustable elastic structure is set in one of the support rods, the internal support structure can be fixed inside the steel cage by elastic force, so as to achieve stable support for the steel cage and prevent it from loosening. On the other hand, during use, no additional tools are required. The internal support structure is easy to install and disassemble inside the steel cage. It is not only simple to use, but also easy to reuse.

[0030] 2. The inner support structure has a folding mechanism, and at the same time, the structure is simple and the volume is small, which is convenient for the transportation and recycling of the inner support structure.

[0031] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a structural schematic diagram of an internal support structure disclosed in an embodiment of the present invention installed inside a steel cage;

[0033] Figure 2 It is a structural schematic diagram of the internal support structure disclosed in an embodiment of the present invention;

[0034] Figure 3 It is a partial structural schematic diagram of the inner support structure disclosed in the embodiment of the present invention. At this time, the protrusion is at the fixed point of the guide groove and is fixed by the clamping plate;

[0035] Figure 4 for Figure 3 A schematic diagram of the structure in which the middle protrusion moves to the rotation folding point of the guide groove;

[0036] Figure 5 for Figure 3 A schematic diagram of the structure after the middle fixed support rod is folded;

[0037] Figure 6 It is a schematic diagram of the structure after the inner support structure disclosed in the embodiment of the present invention is folded;

[0038] Figure 7 It is a schematic cross-sectional view of the elastic telescopic adjuster disclosed in an embodiment of the present invention;

[0039] Figure 8 The present invention is a flow chart of a method for preventing steel cage deformation during transportation disclosed in an embodiment of the present invention.

[0040] Reference numerals: 1, steel cage; 2, inner support structure; 21, elastic telescopic support rod; 211, main rod a; 212, main rod b; 213, elastic telescopic adjuster; 213a, spring box; 213a1, cavity a; 213a2, cavity b; 213a3, cavity c; 213b, elastic mechanism; 213b1, guide slider; 213b2, guide rod; 213b3, convex slider; 213b4, compression spring; 213c, elastic telescopic adjustment mechanism; 213c1 , extrusion slider; 213c2, threaded sleeve; 213d, screw; 214, support plate a; 22, fixed support rod; 221, auxiliary rod; 222, folding mechanism; 222a, sleeve seat; 222a1, guide groove; 222a2, opening; 222b, connecting column; 222c, bump; 222d, fixed structure; 222d1, spring ring; 222d2, clamping plate; 223, support plate b; 23, three-prong connector; 231, support rod a; 232, support rod b. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0042] In order to facilitate the understanding of the present invention, the meanings of the head end and the tail end are specifically defined here:

[0043] Head end: the end away from the three-pronged connector 23 is defined as the head end.

[0044] End: The end close to the three-pronged connector 23 is defined as the end.

[0045] Figures 1-2 A structural schematic diagram of the internal support structure 2 disclosed in an embodiment of the present invention is shown. The internal support structure 2 is installed inside the steel cage 1 and is detachably connected to the inside of the steel cage 1. After use, the elastic telescopic support rod 21 can be loosened to remove the internal support structure 2 from the inside of the steel cage 1, which is convenient for disassembly and installation and is conducive to reuse. At the same time, the structure is simple and easy to use. According to the position of the construction personnel, the elastic telescopic support rod 21 can be rotated to a position convenient for operation to install or disassemble the internal support structure 2, thereby improving the convenience of use.

[0046] like Figure 2 and 7 As shown, the elastic telescopic support rod 21 includes a main rod a211 and a main rod b212. The head end of the main rod a211 and the end of the main rod b212 are connected by an elastic telescopic adjuster 213, which is suitable for adjusting the elasticity of the elastic telescopic support rod 21. The head end of the main rod b212 is connected to a support plate a214.

[0047] Among them, the length of the above-mentioned main rod a is greater than the length of the main rod b212. Generally speaking, the shorter the length of the main rod b212 is, the better. The shorter the length of the main rod b212 is, the closer the elastic expansion and contraction adjuster 213 can be to the outside of the steel cage 1, which is convenient for construction personnel to install or disassemble the internal support structure 2 by adjusting the elastic expansion and contraction adjuster 213.

[0048] like Figure 7 As shown, the elastic telescopic adjuster 213 includes a spring box 213a and two elastic mechanisms 213b. The two elastic mechanisms 213b are symmetrically arranged inside the spring box 213a, and the end of the main rod b212 is connected to the elastic mechanism 213b located at the head end of the spring box 213a, and the head end of the main rod a211 is connected to the elastic mechanism 213b located at the end of the spring box 213a.

[0049] Among them, the elastic mechanism 213b includes a guide slider 213b1 and a convex slider 213b3. The two guide sliders 213b1 are fixedly connected to the main rod a211 and the main rod b212 respectively. A compression spring 213b4 is provided between the guide slider 213b1 and the convex slider 213b3. During the supporting process, the main rod a211 and the main rod b212 are connected through the elastic mechanism 213b. After increasing the elastic force of the elastic mechanism 213b, the supporting force of the internal support structure 2 on the steel cage 1 can be improved. During the transportation of the steel cage 1, when encountering shaking caused by vibration or bumps, under the action of the elastic force of the elastic mechanism 213b, the support plates a214 and b223 can still be kept in close contact with the steel cage 1 to prevent them from falling off due to loosening.

[0050] At the same time, in order to maintain the stability of the compression spring 213b4 in the extension and contraction direction and prevent the compression spring 213b4 from being stuck due to radial bending, a guide rod 213b2 is provided on the plane of the convex slider 213b3. The two guide rods 213b2 penetrate the guide slider 213b1 and are respectively immersed in the cavities of the main rod a211 and the main rod b212. The advantage of providing the guide rod 213b2 is that during the compression and release of the compression spring 213b4, the guide rod 213b2 can slide back and forth in the cavity of the compression spring 213b4 and the main rod a211 or the main rod b212, thereby achieving the purpose of limiting. The convex slider 213b3 and the compression spring 213b4 can only move along the axial direction of the guide rod 213b2, thereby maintaining stable operation.

[0051] like Figure 7As shown, an elastic telescopic adjustment mechanism 213c is provided between the two elastic mechanisms 213b, which are respectively connected to the two elastic mechanisms 213b. The elastic telescopic adjustment mechanism 213c is threadedly connected to a screw rod 213d. The elastic mechanism 213b is squeezed by adjusting the position of the elastic telescopic adjustment mechanism 213c on the screw rod 213d to adjust the elasticity of the elastic telescopic support rod 21.

[0052] like Figure 7 As shown, the spring box 213a is provided with a cavity a213a1, a cavity b213a2, and a cavity c213a3, and two elastic mechanisms 213b and a middle elastic telescopic adjustment mechanism 213c are respectively arranged in the cavity a213a1, the cavity b213a2, and the cavity c213a3.

[0053] Among them, the elastic telescopic adjustment mechanism 213c includes an extrusion slider 213c1 and a threaded sleeve 213c2 that is in contact with it, the screw rod 213d passes through the spring box 213a, and the two extrusion sliders 213c1 and the threaded sleeve 213c2 are arranged in pairs on the screw rod 213d, wherein the extrusion slider 213c1 is slidably connected to the screw rod 213d, the threaded sleeve 213c2 is threadedly connected to the screw rod 213d, and the extrusion slider 213c1 is in contact with the convex surface of the convex slider 213b3.

[0054] In order to facilitate the use of construction workers, the threaded sleeve 213c2 may also be provided with a handle. In this embodiment, a butterfly handle is provided on the threaded sleeve 213c2.

[0055] The adjustment process includes two adjustment processes: increasing the elasticity of the elastic structure and reducing the elasticity of the elastic structure. When the elasticity of the elastic structure is in the minimum state (at this time, the compression spring 213b4 is in a fully released state, and the extrusion slider 213c1 does not squeeze the convex slider 213b3), the main rod a211 and the main rod b212 have a certain amount of activity. When the main rod a211 and the main rod b212 are pressed into the elastic telescopic adjuster 213, they are in the shortest state. This state facilitates the installation or disassembly operation of the internal support structure 2 inside the steel cage 1. When the elasticity of the elastic structure is in the maximum state (at this time, the compression spring 213b4 is in a fully compressed state, and the gap between the two extrusion sliders 213c1 is the smallest), the support force exerted by the internal support structure 2 on the steel cage 1 reaches the maximum.

[0056] 1. Increase the elasticity of the elastic structure:

[0057] Rotate the threaded sleeve 213c2 to drive the two extrusion sliders 213c1 to move closer to each other. At this time, the extrusion slider 213c1 squeezes the convex surface of the convex slider 213b3. The convex slider 213b3 moves after being subjected to the extrusion force and squeezes the compression spring 213b4. At this time, the elastic force applied by the elastic mechanism 213b to the main rod a211 and the main rod b212 increases.

[0058] 2. Reduce the elasticity of the elastic structure:

[0059] The threaded sleeve 213c2 is rotated in the reverse direction. Since the compression spring 213b4 is compressed, during the reverse movement of the threaded sleeve 213c2, the compression spring 213b4 is released, driving the convex surface of the convex slider 213b3 to squeeze the slider 213c1, driving it to move in the reverse direction. At this time, the elastic force applied by the elastic mechanism 213b to the main rod a211 and the main rod b212 is reduced.

[0060] The convex surface of the above-mentioned convex slider 213b3 is generally set to an inclined surface (the cross-sectional shape of the convex surface is an inverted trapezoid) to facilitate the extrusion slider 213c1 to extrude and push it to move. The convex surface can also be set to a curved surface, and in this embodiment, it is preferably an inclined surface.

[0061] like Figures 3 to 6 As shown, in order to facilitate the installation and disassembly of the internal support structure 2 inside the steel cage 1 and facilitate transportation, the following settings are also made:

[0062] A folding mechanism 222 is provided between the end of the auxiliary rod 221 and the support rod b232. The folding mechanism 222 includes a sleeve seat 222a connected to the support rod b232. The sleeve seat 222a has a guide groove 222a1 and an opening 222a2. A connecting column 222b is coaxially provided inside the sleeve seat 222a. The connecting column 222b has a protrusion 222c whose size matches the guide groove 222a1. The protrusion 222c is immersed in the guide groove 222a1 and is slidably connected thereto. A fixing structure 222d is provided at the end of the sleeve seat 222a to limit the position of the protrusion 222c and fix the position of the auxiliary rod 221.

[0063] It should be noted that the number of guide grooves 222a1 and openings 222a2 are both two, and both are distributed on both sides of the sleeve seat 222a, wherein the shape of one guide groove 222a1 is a reverse "C" shape (such as Figures 3 to 5 As shown in the figure, the other guide groove 222a1 is shaped like a "C". In contrast, there are two protrusions 222c, which are distributed on both sides of the connecting column 222b. The protrusions 222c are driven to slide on the guide groove 222a1 by rotating the connecting column 222b and lifting the connecting column 222b, thereby realizing the functions of folding the auxiliary rod 221 and fixing the auxiliary rod 221 in turn.

[0064] And the two sides of the guide groove 222a1 are defined respectively: one side of the guide groove 222a1 is set as a rotation folding point, and the other side is set as a fixed point.

[0065] in,

[0066] The rotation folding point is used for the auxiliary rod 221 to be folded. When the protrusion 222c is slid to the rotation folding point, the auxiliary rod 221 can rotate around the rotation folding point (such as Figures 4-5 As shown, at this time, the protrusion 222c is located at the rotational folding point).

[0067] The fixing point is used to fix the position of the secondary rod 221. After the protrusion 222c slides to the fixing point, it is fixed by the fixing structure 222d (such as Figure 3 As shown, at this time, the protrusion 222c is located at the fixed point).

[0068] like Figure 4 As shown, the fixed structure 222d includes a clamping plate 222d2, which is telescopically arranged inside the side wall at the fixed point of the guide groove 222a1. A spring ring 222d1 is provided on the outside of the sleeve seat 222a. The spring ring 222d1 is connected to the clamping plate 222d2 to drive the clamping plate 222d2 to be telescopic along the axial direction of the sleeve seat 222a. An elastic member is provided between the spring ring 222d1 and the sleeve seat 222a. The elastic member is squeezed when the telescopic spring ring 222d1 moves axially along the sleeve seat 222a. After being released, the elastic member can drive the spring ring 222d1 to reset.

[0069] At the same time, in order to facilitate the protrusion 222c to slide into the fixed point, the side of the card plate 222d2 facing the protrusion 222c to slide into the fixed point is set as an inclined surface. When the protrusion 222c slides into the fixed point, the protrusion 222c squeezes the inclined surface of the card plate 222d2, driving the card plate 222d2 to retract into the side wall of the guide groove 222a1. When the card plate 222d2 retracts, it squeezes the spring ring 222d1 to compress the elastic member. After c completely enters the fixed point, the elastic part loses compression, pushing the spring ring 222d1 to drive the card plate 222d2 to extend from the inside of the side wall of the guide groove 222a1 to clamp the protrusion 222c, thereby fixing the position of the protrusion 222c and locking the position of the auxiliary rod 221. When unlocking, pulling the spring ring 222d1 can drive the card plate 222d2 to retract into the inside of the side wall of the guide groove 222a1. At this time, the protrusion 222c can be slid out to facilitate the folding operation.

[0070] When installing the inner support structure 2 , after unfolding the two fixed support rods 22 , the elastic force of the elastic telescopic support rod 21 is adjusted. When disassembling the inner support structure 2 , the operation is reversed.

[0071] A method for preventing a steel cage 1 from deforming during transportation comprises the following steps:

[0072] S1, unfold the inner support structure 2 in the steel cage 1, rotate the inner support structure 2, and make the elastic telescopic support rod 21 close to the side that is easy to adjust;

[0073] S2, the support plate a214 and the support plate b223 are respectively in contact with the steel cage 1;

[0074] S3, adjusting the elastic force of the elastic telescopic support rod 21, and collecting the pressure data between the support plate a214 and the steel cage 1;

[0075] S4, judging the elastic force of the elastic telescopic support rod 21 at this time according to the collected pressure data;

[0076] S5, the adjustment is completed after the elastic force of the elastic telescopic support rod 21 reaches a set threshold.

[0077] The above threshold is specifically set according to the parameters of the steel cage 1. Through the above setting, the internal support force can be matched with the steel cage 1, the stability during transportation can be improved, and damage to the steel cage 1 can be avoided.

[0078] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An internal support structure for preventing deformation of a steel cage during transportation, characterized in that: include: A three-pronged connecting member (23), comprising a support rod a (231) and two support rods b (232), wherein the support rod a (231) and the two support rods b (232) are connected to each other to form a three-pronged structure; An elastic telescopic support rod (21), comprising a main rod a (211) and a main rod b (212), wherein the length of the main rod a is greater than the length of the main rod b (212), the head end of the main rod a (211) and the tail end of the main rod b (212) are connected via an elastic telescopic adjuster (213), which is suitable for adjusting the elasticity of the elastic telescopic support rod (21), and the head end of the main rod b (212) is connected to a support plate a (214); A fixed support rod (22) comprises a secondary rod (221), wherein a folding mechanism (222) is provided between the end of the secondary rod (221) and the support rod b (232) for folding or unfolding the secondary rod (221), and the head end of the secondary rod (221) is connected to a support plate b (223).

2. The inner support structure for preventing the steel cage from deforming during transportation according to claim 1, characterized in that: The elastic telescopic adjuster (213) comprises a spring box (213a) and two elastic mechanisms (213b), the two elastic mechanisms (213b) are symmetrically arranged inside the spring box (213a), the end of the main rod b (212) is connected to the elastic mechanism (213b) located at the head end of the spring box (213a), the head end of the main rod a (211) is connected to the elastic mechanism (213b) located at the end of the spring box (213a), an elastic telescopic adjustment mechanism (213c) is arranged between the two elastic mechanisms (213b), and is respectively connected to the two elastic mechanisms (213b), the elastic telescopic adjustment mechanism (213c) is threadedly connected to a screw rod (213d), and the elastic mechanism (213b) is squeezed by adjusting the position of the elastic telescopic adjustment mechanism (213c) on the screw rod (213d) to adjust the elasticity of the elastic telescopic support rod (21).

3. The inner support structure for preventing the steel cage from deforming during transportation according to claim 2, characterized in that: The elastic mechanism (213b) comprises a guide slider (213b1) and a convex slider (213b3), the two guide sliders (213b1) are respectively connected to the main rod a (211) and the main rod b (212), a compression spring (213b4) is provided between the guide slider (213b1) and the convex slider (213b3), a guide rod (213b2) is provided on the plane of the convex slider (213b3), and the two guide rods (213b2) penetrate the guide slider (213b1) and are respectively immersed in the cavities of the main rod a (211) and the main rod b (212).

4. The inner support structure for preventing the steel cage from deforming during transportation according to claim 3, characterized in that: The elastic telescopic adjustment mechanism (213c) comprises an extrusion slider (213c1) and a threaded sleeve (213c2) abutting against the extrusion slider (213c1), the screw rod (213d) passes through the spring box (213a), and two extrusion sliders (213c1) and the threaded sleeve (213c2) are arranged in pairs on the screw rod (213d), wherein the extrusion slider (213c1) is slidably connected to the screw rod (213d), the threaded sleeve (213c2) is threadedly connected to the screw rod (213d), and the extrusion slider (213c1) abuts against the convex surface of the convex slider (213b3).

5. An internal support structure for preventing steel cage deformation during transportation according to any one of claims 1 to 4, characterized in that: The folding mechanism (222) comprises a sleeve seat (222a) connected to the support rod b (232), the sleeve seat (222a) having a guide groove (222a1) and an opening (222a2), a connecting column (222b) being coaxially arranged inside the sleeve seat (222a), the connecting column (222b) having a protrusion (222c) having a size matching that of the guide groove (222a1), the protrusion (222c) being immersed in the guide groove (222a1) and being slidably connected thereto, and a fixing structure (222d) being arranged at the end of the sleeve seat (222a) for limiting the position of the protrusion (222c) to fix the position of the auxiliary rod (221).

6. The inner support structure for preventing the steel cage from deforming during transportation according to claim 5, characterized in that: One side of the guide groove (222a1) is set as a rotational folding point, and the other side is set as a fixed point.

7. The inner support structure for preventing the steel cage from deforming during transportation according to claim 6, characterized in that: The fixed structure (222d) includes a clamping plate (222d2), and the clamping plate (222d2) is telescopically arranged inside the side wall at the fixed point of the guide groove (222a1). A spring ring (222d1) is provided outside the sleeve seat (222a), and the spring ring (222d1) is connected to the clamping plate (222d2) to drive the clamping plate (222d2) to be telescopically extended along the axial direction of the sleeve seat (222a).

8. The inner support structure for preventing the steel cage from deforming during transportation according to claim 7, characterized in that: The side of the clamping plate (222d2) facing the protrusion (222c) that slides into the fixed point is arranged as an inclined surface.

9. The inner support structure for preventing the steel cage from deforming during transportation according to claim 7, characterized in that: An elastic member is provided between the spring shift ring (222d1) and the sleeve seat (222a), and the elastic member is squeezed when the telescopic spring shift ring (222d1) moves axially along the sleeve seat (222a). After being released, the elastic member can drive the spring shift ring (222d1) to reset.

10. A method for preventing steel cage deformation during transportation, using the inner support structure for preventing steel cage deformation during transportation as claimed in claim 7, characterized in that: The following steps are involved: The inner support structure (2) is unfolded in the steel cage (1), and the inner support structure (2) is rotated so that the elastic telescopic support rod (21) is close to a side that is easy to adjust; The support plate a (214) and the support plate b (223) are respectively brought into contact with the steel cage (1); Adjusting the elastic force of the elastic telescopic support rod (21) to collect pressure data between the support plate a (214) and the steel cage (1); Determining the elastic force of the elastic telescopic support rod (21) at this time according to the collected pressure data; The adjustment is completed after the elastic force of the elastic telescopic support rod (21) reaches a set threshold value.

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