An internal jacking structure for a spiral tube

Abstract

This utility model discloses a built-in jacking structure for a spiral tube, including a spiral tube, with a jacking structure mounted at the top of the spiral tube, and a top plate mounted at the top of the jacking structure. The jacking structure includes a bottom ring and a top column mounted inside the spiral tube, with a rigid plate mounted at the top of the top column, and the top plate mounted on the rigid plate. A load-bearing hoop is fitted on the outside of the top column, and an equipment groove is mounted on the outer wall of the top of the bottom ring. A jack is installed inside the equipment groove, and the piston rod of the jack is connected to the bottom end of the load-bearing hoop. The built-in jacking structure of this spiral tube has a reasonable structural design. Even if the formwork height changes with the terrain and design elevation, the support can still have a corresponding height adjustment margin. It increases the sand box elevation adjustment stroke without changing the load-bearing capacity of the sand box, which facilitates the separation of the formwork and concrete. Its widespread application has good economic and social benefits.

Description

Technical Field

[0001] This utility model relates to the field of spiral tube technology, specifically to a built-in pushing structure for a spiral tube. Background Technology

[0002] Spiral pipe, also known as spiral steel pipe or spiral welded pipe, is made by rolling low-carbon structural steel or low-alloy structural steel strip into a pipe blank at a certain spiral angle, and then welding the pipe seam together. It can produce large-diameter steel pipes from narrower steel strips. Spiral pipe is mainly used in water supply projects, petrochemical industry, chemical industry, power industry, agricultural irrigation, urban construction, and as a structural component: as a piling pipe, for bridges; for docks, roads, building structures, and marine piling pipes, etc.

[0003] The steel pipe Bailey beam-column support structure has the following technical defects in use: During construction, as the formwork height of the structure changes with the terrain and design elevation, the support height needs to be adjusted accordingly. The sand box has poor elevation adjustment and lowering ability during the construction of the formwork support system, resulting in a low lowering height of the formwork, or even failure to detach from the concrete, making it difficult to dismantle the formwork and support. How to design an internal jacking structure with a spiral pipe and how to increase the elevation adjustment stroke of the sand box without changing the load-bearing capacity of the sand box have become urgent problems to be solved. Utility Model Content

[0004] The purpose of this invention is to provide a built-in jacking structure for a spiral tube to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a built-in jacking structure for a spiral tube, comprising a spiral tube, wherein a jacking structure is assembled at the inner top end of the spiral tube, and a top plate is assembled at the top end of the jacking structure;

[0006] The jacking structure includes a bottom ring and a top column assembled inside the spiral tube. A rigid plate is assembled at the top of the top column, and the top plate is mounted on the rigid plate.

[0007] The top column is fitted with a bearing hoop, the top outer wall of the bottom ring is fitted with an equipment groove, a jack is installed inside the equipment groove, and the piston rod of the jack is connected to the bottom end of the bearing hoop.

[0008] Both ends of the opening of the bearing hoop are provided with fastening plates, and the side wall of the fastening plate is provided with a through hole, and the bolt body is assembled in the through hole;

[0009] The bottom end of the bolt body is provided with a circular groove, and a bolt rod is installed at the bottom end of the circular groove. The bolt rod is installed in the through hole, and a nut is screwed onto the outside of the bolt rod located on the outside of the fastening plate.

[0010] As a preferred embodiment of the built-in jacking structure of the spiral tube of this utility model, the bolt rod is provided with a fastening groove, the inner wall of the fastening groove is provided with four slots, and a fastening bolt is inserted into the inside of the fastening groove.

[0011] As a preferred embodiment of the built-in jacking structure of the spiral tube of this utility model, the inner wall of the fastening groove is provided with a reverse internal thread that mates with the external thread of the fastening bolt.

[0012] As a preferred embodiment of the built-in jacking structure of the spiral tube of this utility model, the bolt rod is fitted with a fixing ring on its outside, and the circumferential surface of the bolt rod is fitted with an annular pressure plate, a spring and an annular rubber sheet.

[0013] As a preferred embodiment of the built-in pushing structure of the spiral tube of this utility model, an extrusion block is fixedly installed at the lower edge of the annular pressure plate.

[0014] As a preferred embodiment of the built-in jacking structure of the spiral tube of this utility model, a limiting groove is opened inside the bearing hoop, a limiting block is installed on the outer wall of the jacking column, and the limiting block is set in the limiting groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the built-in jacking structure of the spiral tube has a reasonable structural design;

[0016] Even if the formwork height of the structure changes with the terrain and design elevation, the support can still have a corresponding height adjustment margin. Without changing the load-bearing capacity of the sand box, the height adjustment stroke of the sand box is increased, which facilitates the separation of the formwork and concrete. Its widespread application has good economic and social benefits. Attached Figure Description

[0017] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the jacking structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the bolt body of this utility model;

[0020] Figure 4 This is a schematic diagram of the bottom end of the bolt rod of this utility model.

[0021] In the diagram: 1. Spiral tube; 2. Jacking structure; 3. Rigid plate; 4. Top plate; 5. Bearing hoop; 6. Jack; 7. Equipment slot; 8. Bottom ring; 9. Bolt body; 91. Bolt rod; 92. Annular rubber sheet; 93. Circular groove; 94. Annular pressure plate; 95. Extrusion block; 96. Fixing ring; 97. Spring; 10. Nut; 11. Through hole; 12. Fastening plate; 13. Slot; 14. Fastening groove; 15. Reverse internal thread; 16. Fastening bolt; 17. Limiting groove; 18. Top column; 19. Limiting block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution:

[0024] In this technical solution, a built-in jacking structure for a spiral tube includes a spiral tube 1. A jacking structure 2 is mounted at the top end of the spiral tube 1, and a top plate 4 is mounted at the top end of the jacking structure 2. The jacking structure 2 includes a bottom ring 8 and a top column 18 mounted inside the spiral tube 1. A rigid plate 3 is mounted at the top end of the top column 18, and the top plate 4 is mounted on the rigid plate 3. A bearing hoop 5 is fitted around the top column 18. An equipment groove 7 is mounted on the outer wall of the top end of the bottom ring 8. The inner surface of the equipment groove 7... A jack 6 is installed in the part, and the piston rod of the jack 6 is connected to the bottom end of the bearing hoop 5. Fastening plates 12 are provided at both ends of the opening of the bearing hoop 5. Through holes 11 are provided on the side walls of the fastening plates 12. Bolt bodies 9 are installed in the through holes 11. A circular groove 93 is provided at the bottom end of the bolt body 9. A bolt rod 91 is installed at the bottom end of the circular groove 93. The bolt rod 91 is installed in the through hole 11. A nut 10 is screwed to the outside of the bolt rod 91 on the outside of the fastening plate 12.

[0025] In this technical solution, the spiral tube 1 is pushed up and down by the lifting structure 2, which controls the lifting of the top plate 4. The bottom ring 8 in the lifting structure 2 is fixed inside the spiral tube 1. The top column 18 is set at the upper end of the bottom ring 8. The top ring 18 is connected to the jacks 6 on the bottom ring 8 by the bearing hoop 5. There are four jacks 6, which are respectively set around the outside of the bottom ring 8. The top plate 4 is pushed upward by the bearing hoop 5 connected by the jacks 6. After the bearing hoop 5 is fitted on the outside of the top column 18, the two fastening plates 12 are fastened by the bolt body 9, thereby fixing them. The bolt rod 91 in the bolt body 9 passes through the through hole 11 and the nut 10 is installed. The two fastening plates 12 are fastened by the threaded engagement between the nut 10 and the bolt rod 91.

[0026] In some technical solutions, the bolt rod 91 is provided with a fastening groove 14, and the inner wall of the fastening groove 14 is provided with four slots 13, and a fastening bolt 16 is inserted into the inside of the fastening groove 14.

[0027] In this technical solution, after the bolt rod 91 and nut 10 are tightened, the fastening bolt 16 is screwed into the fastening groove 14 to open up the bolt rod 91, which is divided into four parts by the slot 13 at the bottom, to prevent the nut 10 from falling off.

[0028] In some technical solutions, the inner wall of the fastening groove 14 is provided with a reverse internal thread 15 that mates with the external thread of the fastening bolt 16.

[0029] In this technical solution, the fastening bolt 16 is an expansion bolt.

[0030] In some technical solutions, a fixing ring 96 is fitted on the outside of the bolt rod 91, and an annular pressure plate 94, a spring 97 and an annular rubber sheet 92 are fitted on the circumferential surface of the bolt rod 91. A compression block 95 is fixedly installed at the lower edge of the annular pressure plate 94.

[0031] In this technical solution, the annular pressure plate 94 is located above the fixed ring 96, the spring 97 is located above the annular pressure plate 94, and the annular rubber sheet 92 is located below the fixed ring 96.

[0032] In some technical solutions, a limiting groove 17 is opened inside the bearing hoop 5, and a limiting block 19 is installed on the outer wall of the top column 18, with the limiting block 19 set in the limiting groove 17.

[0033] In this technical solution, the bearing hoop 5 can be fixed to the outside of the top column 18 by the cooperation of the limiting block 19 and the limiting groove 17.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A built-in jacking structure of a spiral pipe comprising a spiral pipe (1), characterized in that, The inner top end of the spiral tube (1) is equipped with a push structure (2), and the top end of the push structure (2) is equipped with a top plate (4). The jacking structure (2) includes a bottom ring (8) and a top column (18) assembled inside the spiral tube (1). The top of the top column (18) is equipped with a rigid plate (3), and the top plate (4) is mounted on the rigid plate (3). The top column (18) is fitted with a bearing hoop (5), the top outer wall of the bottom ring (8) is fitted with an equipment groove (7), the inside of the equipment groove (7) is fitted with a jack (6), and the piston rod of the jack (6) is connected to the bottom end of the bearing hoop (5). The bearing hoop (5) has fastening plates (12) at both ends of its opening. The fastening plates (12) have through holes (11) on their side walls. Bolt bodies (9) are installed in the through holes (11). The bottom end of the bolt body (9) is provided with a circular groove (93), and a bolt rod (91) is installed at the bottom end of the circular groove (93). The bolt rod (91) is installed in the through hole (11), and a nut (10) is screwed onto the outside of the bolt rod (91) on the outside of the fastening plate (12).

2. A built-in thrust structure of a spiral pipe according to claim 1, characterized in that, The bolt rod (91) has a fastening groove (14), and the inner wall of the fastening groove (14) has four slots (13). A fastening bolt (16) is inserted into the inside of the fastening groove (14).

3. A built-in thrust structure of a spiral pipe according to claim 2, characterized in that The inner wall of the fastening groove (14) is provided with a reverse internal thread (15) that mates with the external thread of the fastening bolt (16).

4. A built-in thrust structure of a spiral pipe according to claim 1, wherein The bolt rod (91) is fitted with a retaining ring (96) on its outside, and the circumferential surface of the bolt rod (91) is fitted with an annular pressure plate (94), a spring (97) and an annular rubber sheet (92).

5. A built-in thrust structure of a spiral pipe according to claim 4, wherein An extrusion block (95) is fixedly installed at the lower edge of the annular pressure plate (94).

6. A built-in thrust structure of a spiral pipe according to claim 1, wherein The bearing hoop (5) has a limiting groove (17) inside, and the top column (18) has a limiting block (19) installed on its outer wall. The limiting block (19) is set in the limiting groove (17).

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