Automatic bracket structure of steel pipe core rod

Abstract

The invention discloses an automatic bracket structure for a steel pipe core rod, and relates to the technical field of automatic brackets for steel pipe core rods, the automatic bracket structure comprises a first sleeve, the outer surface of the first sleeve is slidably connected with a second sleeve, the end face of one end of the first sleeve is fixedly connected with a first fixing ring, and the end, away from the first fixing ring, of the first sleeve is fixedly connected with a second fixing ring; the steel pipe inner wall abutting assembly is arranged on the second sleeve and used for abutting against the inner wall of the steel pipe and fixing the bracket structure to the inner wall of the steel pipe, the clamping and restoring assembly is arranged on the first sleeve and used for driving the steel pipe inner wall abutting assembly to operate, a traditional thread fixing mode is omitted, and therefore the mounting efficiency of the fixed bracket structure is improved; the core rod surface clamping assembly is arranged in the first sleeve and used for clamping the surface of the steel pipe core rod in the operation process of the steel pipe inner wall abutting assembly, and the problems that when the steel pipe core rod is connected with the bracket mechanism, large operation space and operation time are needed, and certain inconvenience exists in the using process are solved.

Description

Technical Field

[0001] The invention relates to the technical field of automatic brackets for steel tube core rods, in particular to an automatic bracket structure for steel tube core rods. Background Art

[0002] The steel core inside a steel pipe usually refers to a layer of steel added inside the steel pipe, also known as a steel pipe core or a cored steel pipe. This design is intended to improve the overall performance of the steel pipe, including strength, corrosion resistance, and stability. The shape of the steel core inside the steel pipe usually matches the shape of the inside of the steel pipe, which can be round, square, rectangular, or other special shapes. It serves as a support or reinforcement structure inside the steel pipe, thereby protecting the steel pipe and increasing its service life. The inner steel core can act as a barrier to protect the outer steel pipe from direct erosion by corrosive substances, thereby extending the service life of the steel pipe. Especially in environments with more corrosive media, such as the chemical industry, the role of the inner steel core is particularly obvious.

[0003] The existing steel tube core rod bracket mechanism is usually fixed with screws. The steel tube core rod is placed on the bracket mechanism and then fixed with screws. The steel tube core rod is then placed in the steel tube to complete the bracket operation of the steel tube core rod. Since the device is fixed with screws, a relatively large working space and working time are required when connecting the steel tube core rod to the bracket mechanism, which is inconvenient in use. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic bracket structure for a steel tube core rod, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: an automatic bracket structure for a steel pipe core rod, comprising a sleeve 1, a sleeve 2 is slidably connected to the outer surface of the sleeve 1, a fixing ring 1 is fixedly connected to the end surface of one end of the sleeve 1, and a fixing ring 2 is fixedly connected to the end of the sleeve 1 away from the fixing ring 1, and the automatic bracket structure for the steel pipe core rod also includes: A steel pipe inner wall abutment component, which is arranged on the second sleeve and is used to abut against the inner wall of the steel pipe to fix the bracket structure on the inner wall of the steel pipe; A clamping and restoring assembly, which is arranged on the first sleeve and is used to drive the inner wall of the steel pipe to abut against the assembly, thereby eliminating the traditional threaded fixing method, thereby improving the installation efficiency of fixing the bracket structure; A core rod surface clamping assembly is arranged in the sleeve, and the core rod surface clamping assembly is connected with the steel pipe inner wall abutment assembly, and is used for clamping the surface of the steel pipe core rod during the operation of the steel pipe inner wall abutment assembly to fix the steel pipe core rod, thereby eliminating the process of separately fixing the steel pipe core rod.

[0006] Optionally, the steel pipe inner wall abutment assembly includes: A fixing plate one, the side surface of the fixing plate one is fixedly connected to the outer side surface of the sleeve two, a curved rod one is hinged on the surface of the fixing plate one, an end of the curved rod one away from the fixing plate one is hinged to an abutting plate, a curved rod two is also hinged on the surface of the other end of the fixing plate one to which the curved rod one is hinged, an end of the curved rod two away from the fixing plate one is also hinged to the surface of the fixing plate one, and the curved rod one and the curved rod two are horizontally arranged.

[0007] Optionally, the steel pipe inner wall abutment assembly further includes: A tripod, wherein the surface of the tripod is fixedly connected to the surface of the fixing ring 1, and the surface of the minimum acute angle end of the tripod abuts against the surface of the curved rod 2, and the abutment plates are provided in four groups, and the tripod is also provided in four groups.

[0008] Optionally, the clamping and recovery assembly includes: A fixed block 1, the surface of which is fixedly connected to the outer surface of the sleeve 2, a sliding rod 1 is fixedly connected to the surface of the fixed block 1 facing the fixed ring 2, a through slot 1 is provided on the end surface of the fixed ring 2 facing the fixed block 1, a slot wall of the slot 1 is slidably connected to the surface of the sliding rod 1, and a circular ring 1 is also fixedly connected to the end surface of the sliding rod 1 facing away from the fixed block 1.

[0009] Optionally, the clamping and recovery assembly further comprises: A fixing block 2, wherein the surface of the fixing block 2 is fixedly connected to the end surface of the fixing ring 1, the fixing block 2 is fixedly connected to a spring 1 on the end surface facing the fixing ring 2, and one end of the spring 1 away from the fixing block 2 is fixedly connected to a fixing block 3, and the surface of the fixing block 3 is fixedly connected to the outer surface of the sleeve 2; A card block, the end face of the fixed ring 2 facing the sleeve 2 is provided with a penetrating sliding groove 1, the groove wall of the sliding groove 1 is slidably connected to the surface of the card block, the clamping end surface of the card block is clamped with the end face of the fixed block 3 facing the spring 1, and the surface of the card block is also fixedly connected with a spring 4, and one end of the spring 4 facing away from the card block is fixedly connected to the groove wall of the sliding groove 1.

[0010] Optionally, the clamping and recovery assembly further comprises: A rotating shaft one, the end face of the rotating shaft one is rotatably connected to the end face of the fixed ring two facing away from the sleeve two, the surface of the rotating shaft one is fixedly connected to an elliptical block, the surface of the elliptical block abuts against the surface of the clamping block, the end surface of the rotating shaft one away from the fixed ring two is also fixedly connected to a gear ring one, the tooth surface of the gear ring one is meshingly connected to an inner gear ring one, the end face of the inner gear ring one facing the fixed ring two is fixedly connected to a sleeve one, the end face of the sleeve one facing away from the inner gear ring one is rotatably connected to the end face of the fixed ring two facing the inner gear ring one, and the outer surface of the sleeve one is also fixedly connected to a circular ring two.

[0011] Optionally, the core rod surface clamping assembly includes: A sliding column one, an inner wall of the sleeve one is provided with a penetrating sliding groove two, the surface of the sliding groove two is slidably connected to the surface of the sliding column one, the end surface of the sliding column one facing away from the inside of the sleeve one is fixedly connected to the inner wall of the sleeve two, the surface of the sliding column one abuts against a sliding block one, the surface of the sliding block one facing away from the sliding column one is fixedly connected to a spring two, the end of the spring two away from the sliding block one is fixedly connected to a sliding block two, and the surface of the sliding block two is slidably connected to the groove wall of the sliding groove two.

[0012] Optionally, the core rod surface clamping assembly further includes: A pushing column, the end face of the pushing column is fixedly connected to the surface of the sliding block 2, the end surface of the pushing column facing away from the sliding block 2 abuts against a triangular block, the end face of the short right-angled side end of the triangular block is fixedly connected to a sliding frame 1, the surface of the sliding frame 1 is slidably connected to a limiting block 1, the end face of the limiting block 1 is fixedly connected to the inner wall of the sleeve 1, the outer surface of the sliding frame 1 is also fixedly connected to a connecting plate 1, the end face of the connecting plate 1 facing the inner wall of the sleeve 1 is fixedly connected to a spring 3, the end of the spring 3 away from the connecting plate 1 is fixedly connected to the inner wall of the sleeve 1, and the end face of the long right-angled side of the triangular block is fixedly connected to a clamping soft plate.

[0013] The beneficial effects of the present invention can be summarized as follows: 1. The present invention allows the second sleeve to slide on the surface of the first sleeve, and further unfolds the four abutment plates to abut against the inner wall of the steel pipe. The fixing method is simple, and when fixing, it is fixed in four directions, which can further improve the fixing effect and the stability of the bracket.

[0014] Second, the present invention uses the spring one and the spring four in combination, which further enables the bracket effect of the bracket structure to be achieved during the bracket process, thereby improving the practicality of the bracket structure. It also facilitates the disassembly of the bracket structure by quickly restoring the sleeve two, thereby improving the secondary practicality of the bracket structure. In addition, by setting the spring one, when the four abutment plates abut against the inner wall of the steel pipe, there will be an elastic force to prevent the four abutment plates from moving, thereby further improving the fixing effect on the inner wall of the steel pipe.

[0015] 3. The present invention drives the clamping soft plate to clamp and fix the surface of the steel pipe core rod while the sleeve 2 slides on the surface of the sleeve 1, eliminating the process of separately fixing the steel pipe core rod, thereby further improving the practicality of the bracket structure. In addition, through the buffering of the spring 2, the sleeve 2 can continue to slide on the surface of the sleeve 1, thereby not affecting the continued operation of the steel pipe inner wall abutment assembly, so that the bracket structure can be better applied to the bracket between the steel pipe and the steel pipe core rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the structure of the present invention; Figure 2 This is a front view of the internal structure of the sleeve in the present invention; Figure 3 A side view of the structure of the present invention; Figure 4 For the present invention Figure 3 A magnified view of the structure at inner A; Figure 5 For the present invention Figure 3 A magnified view of the structure at inner B; Figure 6 It is a front view of the oval block position structure in the present invention; Figure 7 A top cross-sectional view of the internal structure of a sleeve in the present invention; Figure 8 It is an enlarged view of the structure of the core rod surface clamping assembly of the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] For example, see Figures 1 to 8The present embodiment provides an automatic support structure for a steel pipe core rod, including a sleeve 1, a sleeve 2 6 is slidably connected to the outer surface of the sleeve 1, a fixing ring 11 is fixedly connected to the end surface of one end of the sleeve 1, and a fixing ring 2 13 is fixedly connected to the end of the sleeve 1 away from the fixing ring 11. The automatic support structure for the steel pipe core rod also includes a steel pipe inner wall abutment component, which is arranged on the sleeve 2 6, and the steel pipe inner wall abutment component includes: A fixing plate 16, the side of which is fixedly connected to the outer side of the sleeve 2 6, a curved rod 15 is hinged on the surface of the fixing plate 16, one end of the curved rod 15 away from the fixing plate 16 is hinged to the abutting plate 8, and the other end of the fixing plate 16 to which the curved rod 15 is hinged is also hinged to the surface of the curved rod 2 12, one end of the curved rod 2 12 away from the fixing plate 16 is also hinged to the surface of the fixing plate 16, and the curved rod 15 and the curved rod 2 12 are horizontally arranged.

[0019] The tripod 17, the surface of the tripod 17 is fixedly connected to the surface of the fixing ring 11, and the minimum acute angle end surface of the tripod 17 abuts against the surface of the curved rod 2 12, and the abutment plates 8 are provided in four groups, and the tripod 17 is also provided in four groups.

[0020] In this embodiment, the core rod of the steel tube is passed through the interior of the sleeve 1, and then the sleeve 2 6 is made to slide on the surface of the sleeve 1. During the sliding process of the sleeve 2 6 on the surface of the sleeve 1, the curved rod 15 and the curved rod 2 12 are simultaneously driven to move. Then, under the action of the tripod 17, the curved rod 2 12 is pushed to deflect, and at the same time, the curved rod 15 is driven to deflect. Further, the four abutment plates 8 can be unfolded to abut the inner wall of the steel tube, thereby achieving the fixing effect.

[0021] The arrangement of the steel pipe inner wall abutment assembly allows the sleeve 2 6 to slide on the surface of the sleeve 1 1, and further unfolds the four abutment plates 8, thereby abutting against the inner wall of the steel pipe. The fixing method is simple, and when fixing, it is fixed in four directions, which can further improve the fixing effect and the stability of the bracket.

[0022] It is worth noting that, in this embodiment, the steel tube core rod automatic bracket structure also includes a clamping and recovery component, which is arranged on the sleeve 1, and the clamping and recovery component includes: A fixed block 7, the surface of which is fixedly connected to the outer surface of the sleeve 6, the surface of the fixed block 7 facing the fixed ring 13 is fixedly connected to the sliding rod 5, the end surface of the fixed ring 13 facing the fixed block 7 is provided with a through slot 22, the slot wall of the slot 22 is slidably connected to the surface of the sliding rod 5, and the end surface of the sliding rod 5 facing away from the fixed block 7 is also fixedly connected to a circular ring 3.

[0023] Fixed block 2 9, the surface of fixed block 2 9 is fixedly connected to the end face of fixed ring 1 11, the end face of fixed block 2 9 facing fixed ring 2 13 is fixedly connected with spring 14, the end of spring 14 away from fixed block 2 9 is fixedly connected with fixed block 3 18, and the surface of fixed block 3 18 is fixedly connected to the outer surface of sleeve 2 6.

[0024] The clamping block 21 and the end surface of the fixed ring 2 13 facing the sleeve 2 6 are provided with a penetrating sliding groove 1 20, the groove wall of the sliding groove 1 20 is slidably connected to the surface of the clamping block 21, the clamping end surface of the clamping block 21 is clamped with the end surface of the fixed block 3 18 facing the spring 14, and the surface of the clamping block 21 is also fixedly connected to a spring 4 19, and the end of the spring 4 19 facing away from the clamping block 21 is fixedly connected to the groove wall of the sliding groove 20.

[0025] Rotating shaft 1 24, the end face of rotating shaft 124 is rotatably connected to the end face of fixed ring 2 13 away from sleeve 2 6, the surface of rotating shaft 12 is fixedly connected with elliptical block 25, the surface of elliptical block 25 abuts with the surface of block 21, the end surface of rotating shaft 24 away from fixed ring 2 13 is also fixedly connected with gear ring 1 26, the tooth surface of gear ring 26 is meshingly connected with inner gear ring 1 23, the end face of inner gear ring 1 23 facing fixed ring 2 13 is fixedly connected with sleeve 1 2, the end face of sleeve 2 facing away from inner gear ring 1 23 is rotatably connected with the end face of fixed ring 2 13 facing inner gear ring 1 23, the outer surface of sleeve 2 is also fixedly connected with circular ring 2 4.

[0026] In this embodiment, when the sleeve 26 needs to slide on the surface of the sleeve 1, the circular ring 24 is rotated to drive the inner gear ring 23 to rotate, and the rotation of the inner gear ring 23 drives the gear ring 26 to rotate. The rotation of the gear ring 26 further drives the rotation shaft 24 to rotate. The rotation of the rotating shaft 24 causes the elliptical block 25 to push the block 21 to slide in the sliding groove 20 and squeeze the spring 14. During the sliding process of the block 21, the clamping fixation of the fixed block 3 18 will be released, and then under the action of the spring 14, the sleeve 26 can be driven to slide on the surface of the sleeve 1 to drive the operation of the steel pipe inner wall abutment assembly. Then, with the rotation of the elliptical block 25, under the action of the spring 4 19, the block 21 can be driven to recover. When it is necessary to disassemble the bracket structure, the circular ring 3 is pulled to drive the sliding rod 5 to slide, and then the sleeve 26 is pulled to slide on the surface of the sleeve 1, thereby realizing the recovery of the sleeve 26.

[0027] The arrangement of the clamping and restoring assembly, through the coordinated use of spring one 14 and spring four 19, further enables the supporting effect of the supporting structure to be achieved during the supporting process, thereby improving the practicality of the supporting structure, and further facilitates the disassembly of the supporting structure by quickly restoring the sleeve two 6, thereby improving the secondary usability of the supporting structure, and the arrangement of the spring one 14 enables the four abutment plates 8 to resist the inner wall of the steel pipe with an elastic force to prevent the four abutment plates 8 from moving, thereby further improving the fixing effect on the inner wall of the steel pipe.

[0028] Embodiment 2, based on the above embodiment: See also Figure 1 , Figure 6 , Figure 7 and Figure 8 The steel tube core rod automatic bracket structure also includes a core rod surface clamping assembly, the core rod surface clamping assembly is arranged in the sleeve 1, and the core rod surface clamping assembly includes: A sliding column 37 and an inner wall of the sleeve 1 are provided with a penetrating sliding groove 34, the surface of the sliding groove 34 is slidably connected to the surface of the sliding column 37, the end surface of the sliding column 37 facing away from the inside of the sleeve 1 is fixedly connected to the inner wall of the sleeve 26, the surface of the sliding column 37 abuts against a sliding block 36, the surface of the sliding block 36 facing away from the sliding column 37 is fixedly connected to a spring 2 35, the end of the spring 2 35 away from the sliding block 1 36 is fixedly connected to a sliding block 2 32, and the surface of the sliding block 2 32 is slidably connected to the groove wall of the sliding groove 2 34.

[0029] A push column 33 is provided, and the end face of the push column 33 is fixedly connected to the surface of the sliding block 2 32. The end surface of the push column 33 facing away from the sliding block 2 32 abuts against the triangular block 27. The end face of the short right-angled side of the triangular block 27 is fixedly connected to the sliding frame 1 30. The surface of the sliding frame 1 30 is slidably connected to the limiting block 1 29. The end face of the limiting block 29 is fixedly connected to the inner wall of the sleeve 1. The outer surface of the sliding frame 1 30 is also fixedly connected to the connecting plate 1 28. The end face of the connecting plate 1 28 facing the inner wall of the sleeve 1 is fixedly connected to the spring 31. One end of the spring 31 away from the connecting plate 28 is fixedly connected to the inner wall of the sleeve 1. The end face of the long right-angled side of the triangular block 27 is fixedly connected to the clamping soft board 10.

[0030] In this embodiment, when the sleeve 2 6 slides on the surface of the sleeve 1, it will simultaneously drive the sliding column 1 37 to slide in the sliding groove 2 34, and at the same time push the sliding block 1 36 to slide, and then push the spring 2 35 and the sliding block 2 32 to move synchronously. In the process of movement, the pushing column 33 is driven to slide on the inclined surface of the triangular block 27. Under the action of the sliding frame 1 30 and the limit block 1 29, the two triangular blocks 27 are driven to move closer to each other, and the clamping soft plate 10 is driven to clamp and fix the surface of the steel pipe core rod. When the triangular block 27 moves, the spring 3 31 will also be stretched at the same time. After the two triangular blocks 27 move closer to each other and clamp the surface of the steel pipe core rod so that it cannot move, the buffering of the spring 2 35 can further enable the sleeve 2 6 to continue to slide on the surface of the sleeve 1, thereby not affecting the continued operation of the steel pipe inner wall abutment assembly.

[0031] The arrangement of the core rod surface clamping assembly drives the clamping soft plate 10 to clamp and fix the surface of the steel pipe core rod while the sleeve 2 6 slides on the surface of the sleeve 1 1, eliminating the process of separately fixing the steel pipe core rod, thereby further improving the practicality of the bracket structure. In addition, through the buffering of the spring 2 35, the sleeve 2 6 can continue to slide on the surface of the sleeve 1 1, thereby not affecting the continued operation of the steel pipe inner wall abutment assembly, so that the bracket structure can be better used as a bracket between the steel pipe and the steel pipe core rod.

[0032] Working principle: When the steel tube core rod automatic bracket structure is used, the following steps are performed: S1: Make the steel pipe core rod pass through the inside of the casing 1, and move the bracket structure into the steel pipe; S2: Rotate the ring 2 4 so that the elliptical block 25 pushes the clamping block 21 to slide in the sliding groove 1 20, loosen the clamping fixation of the fixing block 3 18, and then under the action of the spring 14, the sleeve 2 6 can be driven to slide on the surface of the sleeve 1 1; S3: The second sleeve 6 slides on the surface of the first sleeve 1, driving the first curved rod 15 and the second curved rod 12 to move, and then under the action of the tripod 17, the second curved rod 12 is pushed to deflect, so that the four abutment plates 8 are unfolded; S4: At the same time, the sliding column 1 37 is driven to slide in the sliding groove 2 34, driving the two triangular blocks 27 to move closer to each other, so that the clamping soft plate 10 clamps and fixes the surface of the steel pipe core rod to complete the bracket work; S5: When the bracket structure needs to be disassembled, pull the ring 1 3 to drive the sliding rod 1 5 to slide, and then pull the sleeve 2 6 to slide on the surface of the sleeve 1 1, so as to restore the sleeve 2 6 and complete the recovery of the bracket structure.

Claims

1. An automatic support structure for a steel tube core rod, comprising a casing (1), characterized in that: The outer surface of the sleeve one (1) is slidably connected to the sleeve two (6), the end surface of one end of the sleeve one (1) is fixedly connected to the fixing ring one (11), and the end of the sleeve one (1) away from the fixing ring one (11) is fixedly connected to the fixing ring two (13), and the steel pipe core rod automatic bracket structure also includes: A steel pipe inner wall abutment component, the steel pipe inner wall abutment component is arranged on the second sleeve (6) and is used to abut against the inner wall of the steel pipe to fix the bracket structure on the inner wall of the steel pipe; A clamping and restoring assembly, the clamping and restoring assembly being arranged on the sleeve 1 (1) and used for driving the steel pipe inner wall abutment assembly to operate; A core rod surface clamping assembly, the core rod surface clamping assembly is arranged in the sleeve one (1), and the core rod surface clamping assembly is connected to the steel pipe inner wall abutment assembly to clamp the surface of the steel pipe core rod during the operation of the steel pipe inner wall abutment assembly.

2. The automatic bracket structure for a steel tube core rod according to claim 1, characterized in that: The steel pipe inner wall abutment assembly comprises: A fixing plate (16), the side surface of the fixing plate (16) being fixedly connected to the outer side surface of the sleeve (6), a curved rod (15) being hingedly connected to the surface of the fixing plate (16), one end of the curved rod (15) away from the fixing plate (16) being hingedly connected to an abutting plate (8), the other end surface of the fixing plate (16) hinged to the curved rod (15) is also hingedly connected to a curved rod (12), one end of the curved rod (12) away from the fixing plate (16) is also hingedly connected to the surface of the fixing plate (16), and the curved rod (15) and the curved rod (12) are arranged horizontally.

3. The automatic bracket structure for a steel tube core rod according to claim 2, characterized in that: The steel pipe inner wall abutment assembly also includes: A tripod (17), wherein a surface of the tripod (17) is fixedly connected to a surface of the first fixing ring (11), and a surface of a minimum acute angle end of the tripod (17) abuts against a surface of the second curved rod (12), and four groups of abutment plates (8) are provided, and similarly, four groups of tripods (17) are also provided.

4. The automatic bracket structure for a steel tube core rod according to claim 1, characterized in that: The clamping and recovery assembly comprises: A fixed block (7), the surface of the fixed block (7) being fixedly connected to the outer surface of the sleeve (6), the surface of the fixed block (7) facing the fixed ring (13) being fixedly connected to a sliding rod (5), the end surface of the fixed ring (13) facing the fixed block (7) being provided with a through slot (22), the slot wall of the slot (22) being slidably connected to the surface of the sliding rod (5), and the end surface of the sliding rod (5) facing away from the fixed block (7) being fixedly connected to a circular ring (3); The clamping and recovery assembly also includes: A fixing block 2 (9), the surface of the fixing block 2 (9) being fixedly connected to the end surface of the fixing ring 1 (11), the end surface of the fixing block 2 (9) facing the fixing ring 2 (13) being fixedly connected to a spring 1 (14), the end of the spring 1 (14) away from the fixing block 2 (9) being fixedly connected to a fixing block 3 (18), the surface of the fixing block 3 (18) being fixedly connected to the outer surface of the sleeve 2 (6); A clamping block (21), the end surface of the fixing ring (13) facing the sleeve (6) is provided with a penetrating sliding groove (20), the groove wall of the sliding groove (20) is slidably connected to the surface of the clamping block (21), the clamping end surface of the clamping block (21) is clamped with the end surface of the fixing block (18) facing the spring (14), the surface of the clamping block (21) is also fixedly connected with a spring (19), and the end of the spring (19) facing away from the clamping block (21) is fixedly connected to the groove wall of the sliding groove (20).

5. The automatic bracket structure for a steel tube core rod according to claim 4, characterized in that: The clamping and restoring assembly further comprises a rotating shaft 1 (24), the end face of the rotating shaft 1 (24) being rotatably connected to the end face of the fixing ring 2 (13) facing away from the sleeve 2 (6), and an elliptical block (25) being fixedly connected to the surface of the rotating shaft 1 (24), and the surface of the elliptical block (25) being in contact with the surface of the clamping block (21).

6. The automatic bracket structure for a steel tube core rod according to claim 5, characterized in that: The end surface of the rotating shaft 1 (24) away from the fixing ring 2 (13) is also fixedly connected to a gear ring 1 (26); the tooth surface of the gear ring 1 (26) is meshingly connected to the inner gear ring 1 (23); the end surface of the inner gear ring 1 (23) facing the fixing ring 2 (13) is fixedly connected to a sleeve 1 (2); the end surface of the sleeve 1 (2) away from the inner gear ring 1 (23) is rotatably connected to the end surface of the fixing ring 2 (13) facing the inner gear ring 1 (23); the outer surface of the sleeve 1 (2) is also fixedly connected to a circular ring 2 (4).

7. The automatic bracket structure for a steel tube core rod according to claim 1, characterized in that: The core rod surface clamping assembly comprises: A sliding column (37), the inner wall of the sleeve (1) is provided with a penetrating sliding groove (34), the surface of the sliding groove (34) is slidably connected to the surface of the sliding column (37), the end surface of the sliding column (37) facing away from the inside of the sleeve (1) is fixedly connected to the inner wall of the sleeve (6), the surface of the sliding column (37) is in contact with a sliding block (36), the surface of the sliding block (36) facing away from the sliding column (37) is fixedly connected to a spring (35), the end of the spring (35) away from the sliding block (36) is fixedly connected to a sliding block (32), and the surface of the sliding block (32) is slidably connected to the groove wall of the sliding groove (34).

8. The automatic bracket structure for a steel tube core rod according to claim 7, characterized in that: The core rod surface clamping assembly also includes: A pushing column (33), the end face of which is fixedly connected to the surface of the second sliding block (32), the end face of which is away from the second sliding block (32) of the pushing column (33) is in contact with a triangular block (27), the end face of the short right-angled side of the triangular block (27) is fixedly connected to a sliding frame (30), the surface of the sliding frame (30) is slidably connected to a limiting block (29), the end face of the limiting block (29) is fixedly connected to the inner wall of the sleeve (1), the outer surface of the sliding frame (30) is also fixedly connected to a connecting plate (28), the end face of the connecting plate (28) facing the inner wall of the sleeve (1) is fixedly connected to a spring (31), one end of the spring (31) away from the connecting plate (28) is fixedly connected to the inner wall of the sleeve (1), and the end face of the long right-angled side of the triangular block (27) is fixedly connected to a clamping soft board (10).

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