Positioning device suitable for multi-size thin-wall concrete filled steel tube pipelines

Abstract

The invention relates to the technical field of thin-wall concrete filled steel tube pouring and positioning, and discloses a positioning device suitable for thin-wall concrete filled steel tube pipelines of multiple sizes, which comprises a steel tube, a PVC (polyvinyl chloride) tube, a positioning device and an adjustable magnetic module which are mutually combined to play a role, the adjustable magnetic module adopts a combination form of a module A + n * a module B + a module C, the number of the modules B in overall assembly can be adjusted to adapt to combinations of steel pipes and PVC pipes with different sizes and diameters, then the PVC pipes are accurately positioned in the centers of the steel pipes through the positioning devices, the positions of the PVC pipes are not affected when concrete is poured, steel blocks are arranged at the tail ends of limiting bolts, the steel blocks enable the contact area of the limiting bolts and the PVC pipes to be enlarged, stability is enhanced, and the stability is improved. And meanwhile, the limiting bolt can be prevented from being unscrewed and falling off, the cross-shaped handle is arranged at one end of the fixing bolt, screwing is facilitated, meanwhile, the positioning device is stably fixed to the steel pipe, and the positioning device is effectively prevented from deviating.

Description

Technical Field

[0001] The present invention relates to the field of positioning for thin-walled concrete-filled steel tube pouring, and particularly to a positioning device for thin-walled concrete-filled steel tube pipes applicable to multiple sizes. Background Technique

[0002] Thin-walled concrete-filled steel tube is a new type of composite structure. Concrete is filled in the interlayer between the steel tube and the inner tube. While ensuring the technical advantages of traditional concrete-filled steel tube components such as high bearing capacity, good plasticity and toughness, fast construction, and excellent corrosion resistance, due to its more developed cross-section, it obtains a greater flexural stiffness. At the same time, it also has the advantages of light self-weight, good seismic performance, and fire resistance.

[0003] For example, the Chinese patent with the publication number CN218912276U discloses a reusable rapid casing centering positioning device, belonging to the technical field of construction devices. It can solve the problem that the centering positioning of pipes is inaccurate during the existing construction process, affecting the construction quality. It includes fixed frame Ⅰ and fixed frame Ⅱ with a C-shaped cross-section. Gaskets are symmetrically arranged at the two free ends of fixed frame Ⅰ and fixed frame Ⅱ. There are openings on the gaskets. Bolt Ⅰ is arranged in the through hole of fixed frame Ⅰ. The free ends of fixed frame Ⅰ and fixed frame Ⅱ are connected by bolt Ⅰ. Openings are symmetrically arranged at the centers of the side plates of fixed frame Ⅰ and fixed frame Ⅱ. Bolt Ⅱ is arranged in the openings. Openings are symmetrically arranged on the side plate of fixed frame Ⅱ near the free end. Bolt Ⅲ is arranged in the openings. Baffles are respectively arranged at one ends of bolt Ⅱ and bolt Ⅲ located inside fixed frame Ⅰ and fixed frame Ⅱ; For example, the Chinese patent with the publication number CN114738553A discloses a pipe centering positioning construction method and a centering positioning device. A standardized centering casing is used to center the pipe. The outer diameter of the standardized centering casing is formulated according to the inner diameter standard of the embedded casing, and the inner diameter is formulated according to the outer diameter of the pipe. Centering casings with relevant dimensions are mass-produced according to the commonly used embedded casings and pipe combinations during the construction process, or the centering casings are customized according to the engineering needs. The centering casing of the present invention includes a casing wall, an airbag, and a positioning column. The airbag is wrapped outside the casing wall, and the positioning column is arranged inside the casing wall; As disclosed in the Chinese patent with the publication number CN112260619A, a horizontal adjustment device and a photovoltaic foundation anchor bolt pouring and fixing system are disclosed. A horizontal adjustment device includes a base, a mounting seat, a fixed support mechanism, and at least two movable support mechanisms. The fixed support mechanism is arranged on the base, and the mounting seat is arranged at the top of the fixed support mechanism; the movable support mechanism is arranged on the base, and the mounting seat is arranged at the top of the movable support mechanism. The connection line between the fixed support mechanism and at least two movable support mechanisms is non-linear; the mounting seat is used to mount the anchor bolt. The photovoltaic foundation anchor bolt pouring and fixing system includes the above horizontal adjustment device, and further includes a fixing mechanism arranged on the mounting seat for fixing the anchor bolt, a mold bucket arranged on the base for pouring concrete, and a reinforcement mechanism for fixing the mold bucket; As disclosed in the Chinese patent with the publication number CN206234479U, a pipe centering and positioning device inside a casing is disclosed. It has a large ring and a small ring. The small ring is located inside the large ring and is concentrically fixed to the large ring through at least one support device. The support device is located between the large ring and the small ring and connects the large ring and the small ring. The outer diameter of the large ring matches the inner diameter of the casing, and the inner diameter of the small ring matches the outer diameter of the pipe. When installing the pipe, only need to put the pipe into the small ring of the centering and positioning device, move the pipe to its installation position, then knock the centering and positioning device sleeved on the pipe into the middle position of the casing, and ensure that the large ring and the small ring are horizontal; As disclosed in the Chinese patent with the publication number CN218311683U, a medium and large diameter pipe orifice welding alignment and correction device is disclosed. It includes an adjustment ring, an adjustment rod, a set block, and a set bolt. The adjustment ring is used to be sleeved on the pipe to be welded; a fixing nut is arranged at the upper end of the adjustment rod and is fixedly connected to the adjustment ring. The adjustment rod is used to adjust the distance between the adjustment ring and the pipe to be welded; the set block is arranged on the adjustment ring; the set bolt is connected to the set block, and the set bolt is used to fix the set block. The medium and large diameter pipe orifice welding alignment and correction device further includes an adjustment block, and the adjustment block is arranged at the lower end of the adjustment rod. The adjustment block is used to adjust the distance between the adjustment ring and the pipe to be welded.

[0004] In summary, there are many drawbacks in the existing positioning of thin-walled steel tube concrete pouring, which are summarized as follows: ① Before pouring concrete, the precise positioning of the PVC pipe is an important step in the formation of thin-walled steel tube concrete structures. During the entire pouring process, it is necessary to ensure that the PVC inner tube is centered and stably fixed inside the steel tube to form a standard thin-walled steel tube concrete component. Since the steel tube and the PVC pipe are independent of each other, this makes the centering and fixing of the PVC pipe particularly difficult, and it will further affect the position of the inner tube during concrete pouring; ②Although there are steel pipe centering devices in the prior art, most of them are only applicable to thin-walled steel pipe concrete members of the same pipe diameter and cannot be used when the steel pipe size changes. They are relatively limited and have low adjustability. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a positioning device for thin-walled steel pipe concrete pipes applicable to multiple sizes to solve the above problems.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions.

[0007] A positioning device for thin-walled steel pipe concrete pipes applicable to multiple sizes, including a steel pipe, a PVC pipe, a positioning device, and an adjustable magnetic attraction module. The PVC pipe is located inside the steel pipe. The positioning device is connected to the adjustable magnetic attraction module. The adjustable magnetic attraction module includes module A, module B, and module C. Module A, module B, and module C are magnetically connected to each other. The positioning device includes a fixed structure and a limiting structure. The fixed structure is connected to module A. The limiting structure includes a limiting bolt and a limiting synchronous scale. The limiting bolt is threadedly connected to module C, and a steel block is provided at the end of the limiting bolt. The steel block abuts against the surface of the PVC pipe. The limiting synchronous scale is inserted through module C and is located above the limiting bolt. The surface of the limiting synchronous scale is provided with scales, and a limiting abutting block is provided at one end. The limiting abutting block corresponds to and fits with the nut of the limiting bolt. The adjustable magnetic attraction module adopts the combination form of module A + n × module B + module C. By adjusting the number of module B in the overall assembly, it can be adapted to combinations of steel pipes and PVC pipes with different diameters. Then, through the positioning device, the PVC pipe is accurately positioned at the center of the steel pipe, and the position of the PVC pipe will not be affected during concrete pouring. A steel block is provided at the end of the limiting bolt, which increases the contact area between the limiting bolt and the PVC pipe, enhances stability, and at the same time prevents the limiting bolt from loosening and falling off.

[0008] Preferably, the fixed structure includes a fixed bolt and a fixed synchronous scale. The fixed bolt is threadedly connected to module A. The surface of the limiting synchronous scale is provided with scales, and a limiting abutting block is provided at one end. The limiting abutting block corresponds to and fits with the nut of the limiting bolt. On the one hand, the limiting abutting block and the nut of the limiting bolt are in a follow-up fit, which can accurately master the moving distance of the limiting bolt. On the other hand, the limiting abutting block can ensure that the limiting synchronous scale will not fall off during use. The fixed synchronous scale and the fixed abutting block are the same in principle and can also accurately master the moving distance of the fixed bolt and prevent it from falling off. Different from the limiting bolt, the fixed bolt and the fixed abutting block need to be manually aligned. After ensuring that the fixed abutting block and the cross handle are in the same plane, the moving value is read.

[0009] Preferably, the fixed synchronous scale is inserted through module A and is located above the fixed bolt.

[0010] Preferably, the surface of the fixed synchronization ruler is provided with scales, and fixed abutting blocks are provided at both ends.

[0011] Preferably, one end of the fixing bolt is provided with a cross handle, which not only facilitates screwing but also stably fixes the positioning device on the steel pipe, effectively preventing the positioning device from shifting.

[0012] Preferably, the shape profile of module C is T-shaped, and strong magnetic strips are provided on both the left and right sides.

[0013] Preferably, an iron strip is provided on one side of module B opposite to module C, and a strong magnetic strip is provided at the position opposite to module A on the other side.

[0014] Preferably, module B can be magnetically adsorbed and connected to both the left and right sides of module C.

[0015] Preferably, module A is a bent part, and iron strips are provided on both the left and right sides.

[0016] Preferably, both the left and right sides of module A are magnetically adsorbed and connected to module B.

[0017] Compared with the prior art, the present invention discloses a positioning device for thin-walled steel pipe concrete pipes applicable to multiple sizes, including a steel pipe, a PVC pipe, a positioning device, and an adjustable magnetic adsorption module. The four are used in combination to play a role. ① The adjustable magnetic adsorption module adopts the combination form of module A + n × module B + module C, and the number of module B in the overall assembly can be adjusted to adapt to the combination of steel pipes and PVC pipes with different diameters. ② Then, through the positioning device, the PVC pipe is accurately positioned at the center of the steel pipe, and the position of the PVC pipe will not be affected during concrete pouring. ③ A steel block is provided at the end of the limit bolt, which increases the contact area between the limit bolt and the PVC pipe, enhances stability, and at the same time can prevent the limit bolt from loosening and falling off. ④ One end of the fixing bolt is provided with a cross handle, which not only facilitates screwing but also stably fixes the positioning device on the steel pipe, effectively preventing the positioning device from shifting. ⑤ The surface of the limit synchronization ruler is provided with scales, and a limit abutting block is provided at one end. The limit abutting block corresponds to and fits with the nut of the limit bolt. On the one hand, the limit abutting block and the nut of the limit bolt cooperate synchronously, and the moving distance of the limit bolt can be accurately grasped. On the other hand, the limit abutting block can ensure that the limit synchronization ruler will not fall off during use. The same is true for the fixed synchronization ruler and the fixed abutting block, which can also accurately grasp the moving distance of the fixing bolt and prevent falling off. Different from the limit bolt, the fixing bolt and the fixed abutting block need to be manually aligned to ensure that the fixed abutting block and the cross handle are in the same plane before reading the moving value. Description of the Drawings

[0018] Figure 1 This is a schematic structural diagram of a positioning device for thin-walled steel pipe concrete pipes applicable to multiple sizes according to the present invention; Figure 2 This is a schematic structural diagram of the positioning device and the adjustable magnetic attraction module according to the present invention; Figure 3 This is a top view of the structure of the positioning device and the adjustable magnetic attraction module according to the present invention; Figure 4 This is a schematic structural diagram in Embodiment 3 of the positioning device for thin-walled steel pipe concrete pipes applicable to multiple sizes according to the present invention; Figure 5 This is a schematic structural diagram of Module A and the fixed structure according to the present invention; Figure 6 This is a schematic structural diagram of Module B according to the present invention; Figure 7 This is a schematic structural diagram of Module C and the limit structure according to the present invention; Figure 8 This is a schematic structural diagram in Embodiment 2 of the positioning device for thin-walled steel pipe concrete pipes applicable to multiple sizes according to the present invention; Figure 9 This is a schematic diagram for verifying the numerical calculation logic of the steel pipe and the PVC pipe in Embodiment 1 of the positioning device for thin-walled steel pipe concrete pipes applicable to multiple sizes according to the present invention; Figure 10 This is a schematic diagram for verifying the numerical calculation logic of the adjustable magnetic attraction module in Embodiment 1 of the positioning device for thin-walled steel pipe concrete pipes applicable to multiple sizes according to the present invention; Figure 11 This is a schematic structural diagram of the limit synchronous scale according to the present invention. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Embodiment 1

[0021] A positioning device for thin-walled concrete-filled steel pipes applicable to multiple sizes, comprising a steel pipe 1, a PVC pipe 2, a positioning device 3, and an adjustable magnetic adsorption module 4. The PVC pipe 2 is located inside the steel pipe 1. The positioning device 3 is connected to the adjustable magnetic adsorption module 4. The adjustable magnetic adsorption module 4 includes module A41, module B42, and module C43. Module A41, module B42, and module C43 are magnetically connected to each other. The positioning device 3 includes a fixed structure 31 and a limiting structure 32. The fixed structure 31 is connected to module A41. The limiting structure 32 includes a limiting bolt 321 and a limiting synchronous ruler 322. The limiting bolt 321 is threadedly connected to module C43, and a steel block is provided at the end of the limiting bolt 321. The steel block abuts against the surface of the PVC pipe 2, which increases the contact area between the limiting bolt 321 and the PVC pipe 2, enhances stability, and at the same time prevents the limiting bolt 321 from loosening and falling off. The limiting synchronous ruler 322 is inserted through module C43. The limiting synchronous ruler 322 and module C43 have a certain damping value to ensure that the limiting synchronous ruler 322 does not slide freely on module C43 and is located above the limiting bolt 321. The surface of the limiting synchronous ruler 322 is provided with scales, and limiting abutting blocks 3221 are provided at both ends. One end of the limiting abutting block 3221 is correspondingly attached to the nut of the limiting bolt 321. When the limiting bolt 321 is turned, the limiting synchronous ruler 322 retracts inward. It is necessary to ensure that the screwing-in lengths of the four limiting bolts 321 are the same according to the outer diameter of the PVC pipe 2, so that the PVC pipe 2 is accurately centered and positioned inside the steel pipe 1.

[0022] The fixed structure 31 includes a fixed bolt 311 and a fixed synchronous ruler 312. The fixed bolt 311 is threadedly connected to module A41. The fixed synchronous ruler 312 is inserted through module A41. The fixed synchronous ruler 312 and module A41 have a certain damping value to ensure that the fixed synchronous ruler 312 does not slide freely on module A41 and is located above the fixed bolt 311. The surface of the fixed synchronous ruler 312 is provided with scales, and fixed abutting blocks 3121 are provided at both ends. One end of the fixed bolt 311 is provided with a cross handle 3111, which makes it convenient to turn and can stably fix the entire positioning device 3 on the steel pipe 1, effectively preventing deviation.

[0023] The shape profile of module C43 is T-shaped, and strong magnetic strips are provided on both the left and right sides. An iron strip is provided on one side of module B42 opposite to module C43, and a strong magnetic strip is provided on the other side opposite to module A41. Module B42 can be magnetically adsorbed and connected to both the left and right sides of module C43. Module A41 is a bent part, and iron strips are provided on both the left and right sides. The left and right sides of module A41 are magnetically adsorbed and connected to module B42.

[0024] Working mode: Step 1: The staff measures the outer diameters of the steel pipe 1 and the PVC pipe 2 in advance, selects n modules B42 according to the measurement results, that is, a plurality of modules B42, and calculates the required screwing lengths of the four fixing bolts 311 and the four limiting bolts 321 respectively; The calculation logic is verified as follows: Assume that the inner diameter of steel pipe 1 is R , the outer diameter of PVC pipe 2 is r , the side length of the positioning device 3 is l = l A41 +n× l B42 + l C43 ,but , so the number of modules B42 on each side meets n That is, the total number of four side modules B42 is 4n. The required screwing length of the four fixing bolts 311 is , the required screwing length of the four limit bolts 321 is ,like Figure 9 and Figure 10 shown.

[0025] Step 2: First, tighten the limit bolt 321 and the fixing bolt 311 outward, and connect the module B42 selected in step 1 to the module A41 and the module C43 through magnetic adsorption, that is, the mode of "module A41+n×module B42+module C43", where n is a group. Figure 2 As shown, a complete circle is formed by relying on the steel pipe 1, and 1 group is used, and 1 group includes 2 modules B42. The specific number and size of the module B42 need to be determined according to the actual working conditions. This embodiment only expresses one form; Step 3: Place the positioning device 3 assembled in step 2 on the steel pipe 1 as a whole for preliminary positioning. According to the required screwing length of the fixing bolt 311 calculated in step 1, screw the four fixing bolts 311 in sequence. When screwing, observe the retracted scale value of the fixed synchronization ruler 312 above the fixing bolt 311 to ensure that the screwing length of the four fixing bolts 311 is consistent with the calculated result. The fixing work of the positioning device 3 is completed. At this time, the threaded end of the fixing bolt 311 is placed on the top of the PVC pipe 2, and the cross handle 3111 is partially fastened to the outer surface of the steel pipe 1, and combined with the module C43 to clamp the outer wall of the steel pipe 1; Step 4: According to the required screwing-in length of the limit bolts 321 calculated in Step 1, sequentially turn the four limit bolts 321. When turning, observe the retraction scale value of the limit synchronization ruler 322 above the limit bolts 321. Since the limit abutting block 3221 corresponds to and fits with the nuts of the limit bolts 321, when turning the limit bolts 321, the limit synchronization ruler 322 also moves inward synchronously, ensuring that the screwing-in lengths of the four limit bolts 321 are consistent with the calculation results. After tightening the limit bolts 321, the ends of the limit bolts 321 just abut against the surface of the PVC pipe 2 for limit fixation, completing the positioning work of the overall positioning device 3; Step 5: Pour concrete into the interlayer between the steel pipe 1 and the PVC pipe 2. After the concrete stabilizes, first loosen the limit bolts 321 and then loosen the fixing bolts 311, and then the positioning device 3 can be taken out.

[0026] Embodiment 2

[0027] Based on the above, with other technical features unchanged, as Figure 8 shown, in the mode of "module A41 + n × module B42 + module C43", the value of n can also be 0, that is, without using module B42, and directly magnetically adsorb in the form of module A41 + module C43.

[0028] Embodiment 3

[0029] Based on the above, with other technical features unchanged, as Figure 4 shown, in the mode of "module A41 + n × module B42 + module C43", the value of n can also be 2, that is, 2 groups, and 2 groups include 4 module B42s.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above drawings are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A positioning device for thin-walled concrete-filled steel tubular pipes applicable to multiple sizes, characterized in that: It includes a steel pipe (1), a PVC pipe (2), a positioning device (3), and an adjustable magnetic adsorption module (4). The PVC pipe (2) is located inside the steel pipe (1). The positioning device (3) is connected to the adjustable magnetic adsorption module (4). The adjustable magnetic adsorption module (4) includes module A (41), module B (42), and module C (43). Module A (41), module B (42), and module C (43) are magnetically connected to each other. The positioning device (3) includes a fixing structure (31) and a limiting structure (32). The fixing structure (31) is connected to module A (41). The limiting structure (32) includes a limiting bolt (321) and a limiting synchronous ruler (322). The limiting bolt (321) is threadedly connected to module C (43), and a steel block is provided at the end of the limiting bolt (321). The steel block abuts against the surface of the PVC pipe (2). The limiting synchronous ruler (322) is inserted through module C (43) and is located above the limiting bolt (321). The surface of the limiting synchronous ruler (322) is provided with scales, and limiting abutting blocks (3221) are provided at both ends. One end of the limiting abutting block (3221) corresponds to and fits against the nut of the limiting bolt (321).

2. The positioning device for thin-walled concrete-filled steel tubular pipes applicable to multiple sizes according to claim 1, wherein: The fixing structure (31) includes a fixing bolt (311) and a fixing synchronous ruler (312). The fixing bolt (311) is threadedly connected to module A (41).

3. The positioning device for thin-walled concrete-filled steel pipes applicable to multiple sizes according to claim 2, wherein: The fixing synchronous ruler (312) is inserted through module A (41) and is located above the fixing bolt (311).

4. The positioning device for thin-walled concrete-filled steel pipes applicable to multiple sizes according to claim 3, wherein: The surface of the fixing synchronous ruler (312) is provided with scales, and fixing abutting blocks (3121) are provided at both ends.

5. The positioning device for thin-walled concrete-filled steel tubular pipes applicable to multiple sizes according to claim 2, wherein: A cross handle (3111) is provided at one end of the fixing bolt (311).

6. The positioning device for thin-walled concrete-filled steel tubular pipes applicable to multiple sizes according to claim 1, wherein: The shape profile of module C (43) is T-shaped, and strong magnetic strips are provided on both the left and right sides.

7. The positioning device for thin-walled concrete-filled steel pipes applicable to multiple sizes according to claim 1, characterized in that: On one side of module B (42) opposite to module C (43), an iron strip is provided, and on the other side opposite to module A (41), a strong magnetic strip is provided.

8. The positioning device for thin-walled concrete-filled steel pipes applicable to multiple sizes according to claim 7, characterized in that: Module B (42) can be magnetically adsorbed and connected to both the left and right sides of module C (43).

9. The positioning device for thin-walled concrete-filled steel tubular pipes applicable to multiple sizes according to claim 8, characterized in that: Module A (41) is a bent part, and iron strips are provided on both the left and right sides.

10. The positioning device for thin-walled concrete-filled steel pipes applicable to multiple sizes according to claim 9, characterized in that: Both the left and right sides of module A (41) are magnetically adsorbed and connected to module B (42).

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