Adjustable steel pipe coiling device

Abstract

The utility model relates to the technical field of mechanical engineering, and provides an adjustable steel pipe coiling device which comprises a support and a rotating seat, the rotating seat is provided with a rotating rod, the rotating rod is rotationally installed on the support, and the rotating seat is rotationally installed on the support through the rotating rod; a plurality of limiting rods are installed on the rotating seat in a sliding mode, the multiple limiting rods are arranged at intervals in the axial direction of the rotating rod, and an adjusting area is formed among the multiple limiting rods; an adjusting assembly is arranged between the limiting rod and the rotating seat and used for adjusting the distance between the limiting rod and the rotating rod so as to adjust the size of the adjusting area. By means of the adjustable steel pipe coiling device, steel pipe coils with different inner diameters can be obtained through coiling.

Description

Technical Field

[0001] This application relates to the technical field of mechanical engineering, and particularly to an adjustable steel pipe coiling device. Background Art

[0002] A steel pipe coiling device generally refers to equipment used to coil steel pipes into rolls or coils. In the prior art, a steel pipe coiling device includes a bracket and a rotating component. The rotating component is usually a set of rollers or a rotatable turntable for coiling steel pipes into rolls. The rotating component needs to have sufficient strength and durability to withstand the huge stress and friction generated during the coiling process.

[0003] However, in such rotating components, whether it is the coiling method through rollers or the coiling method through a turntable, since the outer diameter of the rollers or the turntable is fixed, the inner diameter of the steel pipe coil obtained by coiling the steel pipe is also fixed. When it is necessary to coil steel pipes of different materials to obtain steel pipe coils with different inner diameters, such steel pipe coiling devices have obvious limitations, so further improvement is needed. Summary of the Utility Model

[0004] In order to be able to coil steel pipe coils with different inner diameters, this application provides an adjustable steel pipe coiling device.

[0005] The adjustable steel pipe coiling device provided by this application adopts the following technical solutions:

[0006] An adjustable steel pipe coiling device includes a bracket and a rotating seat. The rotating seat is provided with a rotating rod, and the rotating rod is rotatably installed on the bracket. The rotating seat is rotatably installed on the bracket through the rotating rod; a limiting rod is slidably installed on the rotating seat, and a plurality of the limiting rods are arranged at intervals around the axis of the rotating rod. An adjusting area is formed between the plurality of limiting rods; an adjusting component is provided between the limiting rod and the rotating seat, and the adjusting component is used to adjust the distance between the limiting rod and the rotating rod to adjust the size of the adjusting area.

[0007] By adopting the above technical solutions, through the setting of the limiting rod and the adjusting component, the rotating seat is rotatably installed on the bracket. One end of the steel pipe is connected to the limiting rod, and the rotating seat is driven to rotate, so that the steel pipe is bent and coiled between the plurality of limiting rods to form a steel pipe coil; when coiling steel pipes of different materials, according to the material of the steel pipe, the distance between the limiting rod and the rotating rod is adjusted through the adjusting component, thereby adjusting the size of the adjusting area, so that the inner diameter of the steel pipe coil obtained by coiling the steel pipe can show different values, and thus steel pipe coils with different inner diameters can be coiled, improving the adaptability of the overall structure.

[0008] Optionally, the adjusting component includes a sliding rod and a limiting member. Both ends of the sliding rod extend along the radial direction of the rotating rod. One end of the sliding rod is connected to the outer peripheral wall of the rotating seat. A plurality of sliding rods are provided and are correspondingly arranged with a plurality of limiting rods. One end of each limiting rod is slidably installed on the corresponding sliding rod so as to be able to approach or move away from the rotating rod; the limiting member is arranged between the limiting rod and the corresponding sliding rod for limiting the relative position between the limiting rod and the corresponding sliding rod.

[0009] By adopting the above technical solution, through the arrangement of the sliding rod and the limiting member, the sliding rod provides an installation carrier for the limiting rod, enabling the limiting member to be slidably installed on the rotating seat and capable of radial displacement along the rotating rod. After the limiting rod moves to a suitable position, the limiting member fixes the limiting rod to fix the relative position between the limiting rod and the corresponding sliding rod, thereby fixing the size of the adjustment area and reducing the possibility of the limiting rod moving freely when coiling the steel pipe.

[0010] Optionally, the limiting member includes a sliding sleeve and a limiting bolt. The sliding sleeve is arranged at one end of the limiting rod. The sliding sleeve is slidably sleeved on the corresponding sliding rod. The limiting rod is slidably installed on the corresponding sliding rod through the sliding sleeve; the sliding sleeve is provided with a first limiting hole, and the sliding rod is provided with a plurality of second limiting holes. The limiting bolt sequentially passes through the first limiting hole and the second limiting hole and is threadedly connected to the first limiting hole.

[0011] By adopting the above technical solution, through the arrangement of the sliding sleeve and the limiting bolt, after moving the limiting rod to a suitable position according to the material of the steel pipe (i.e., determining the inner diameter of the steel pipe coil according to the material of the steel pipe), the limiting bolt sequentially passes through the first limiting hole and the second limiting hole, and the limiting bolt is threadedly connected to the first limiting hole, so that the sliding sleeve and the sliding rod can be fixedly connected, thereby determining the size of the adjustment area, improving the convenience of adjusting the size of the adjustment area, and enabling steel pipe coils with different inner diameters to be coiled.

[0012] Optionally, a plurality of first reinforcing ribs are provided on the outer peripheral wall of the rotating seat. The plurality of first reinforcing ribs are correspondingly arranged with the plurality of sliding rods. One end of the first reinforcing rib is connected to the outer peripheral wall of the rotating seat, and the other end is connected to the free end of the corresponding sliding rod.

[0013] By adopting the above technical solution, through the arrangement of the first reinforcing rib, the free end of the corresponding sliding rod is connected to the end of the first reinforcing rib away from the rotating seat to support the free end of the sliding rod, improve the structural strength of the sliding rod, reduce the possibility of the sliding rod deforming under pressure, and improve the service life of the overall structure.

[0014] Optionally, an avoidance channel for the sliding sleeve to slide is formed between the first reinforcing rib and the corresponding sliding rod. The outer peripheral wall of the sliding sleeve has a cutting surface, and the cutting surface abuts against the side wall of the first reinforcing rib close to the avoidance channel.

[0015] By adopting the above technical solution, through the arrangement of the avoidance channel and the cutting surface, the avoidance channel provides an avoidance space for the sliding of the sliding sleeve, so that the limiting rod can slide along the length direction of the sliding rod; a cutting surface is provided on the outer peripheral wall of the sliding sleeve, and the cutting surface abuts against the first reinforcing rib to limit the free rotation of the sliding sleeve, thereby reducing the possibility of the limiting rod rotating freely around the central axis of the sliding rod and improving the stability of the overall structure.

[0016] Optionally, a connecting sleeve is provided on the outer peripheral wall of the sliding sleeve. One end of the limiting rod is inserted into the connecting sleeve, and the limiting rod is detachably connected to the connecting sleeve.

[0017] By adopting the above technical solution, through the arrangement of the connecting sleeve, the limiting rod can be replaced. In actual operation, according to the number of turns that the steel pipe coil needs to be wound, limiting rods of different lengths can be replaced to adapt to the winding of the steel pipe and improve the adaptability of the overall structure.

[0018] Optionally, an adjusting disc is rotatably installed on the rotating seat. A plurality of synchronizing rods are hinged to the adjusting disc. The plurality of synchronizing rods are arranged corresponding to the plurality of limiting rods. One end of the synchronizing rod is hinged to the adjusting disc, and the other end is hinged to the corresponding limiting rod; a docking member for restricting the free rotation of the adjusting disc is provided between the adjusting disc and the rotating seat.

[0019] By adopting the above technical solution, through the arrangement of the adjusting disc, the synchronizing rods and the docking member, the adjusting disc connects a plurality of limiting rods through a plurality of synchronizing rods to connect all the limiting rods in series. Driving the adjusting disc to rotate can synchronously drive all the limiting rods to approach or move away from the rotating rod; after the size of the adjusting area is adjusted, the free rotation of the adjusting disc is restricted by the docking member to fix the size of the adjusting area, greatly improving the convenience of adjusting the size of the adjusting area.

[0020] Optionally, a first docking groove is formed in the adjusting disc, and a second docking groove is formed in the top wall of the rotating seat; the docking member includes a docking block and a return spring. The docking block is slidably installed in the first docking groove. The return spring is arranged between the docking block and the adjusting disc. The return spring normally makes the docking block be inserted into the second docking groove in a matching manner, and the cross section of the docking block is polygonal.

[0021] By adopting the above technical solution, through the arrangement of the docking block and the return spring, the docking block is normally inserted into the docking groove under the action of the return spring, so that the adjusting disc and the rotating seat are connected as a whole, thereby restricting the free rotation of the adjusting disc. When it is necessary to adjust the size of the adjusting area, pull the docking block to force the docking block to disengage from the docking groove, and then the adjusting disc can be driven to rotate, and further force all the limiting rods to approach or move away from the rotating rod synchronously, greatly improving the convenience of adjusting the size of the adjusting area.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. Through the arrangement of the limiting rod and the adjusting component, the rotating seat is rotatably installed on the bracket, one end of the steel pipe is connected to the limiting rod, and the rotating seat is driven to rotate, so that the steel pipe is bent and coiled between multiple limiting rods to form a steel pipe coil; when coiling steel pipes of different materials, according to the material of the steel pipe, the distance between the limiting rod and the rotating rod is adjusted through the adjusting component, so as to adjust the size of the adjusting area, so that the steel pipe coil obtained by coiling the steel pipe can present different inner diameters, and then steel pipe coils with different inner diameters can be coiled, improving the adaptability of the overall structure;

[0024] 2. Through the arrangement of the avoidance channel and the cutting surface, the avoidance channel provides an avoidance space for the sliding of the sliding sleeve, so that the limiting rod can slide along the length direction of the sliding rod; a cutting surface is arranged on the outer peripheral wall of the sliding sleeve, and the cutting surface abuts against the first reinforcing rib to limit the free rotation of the sliding sleeve, and further reduce the possibility of the limiting rod rotating freely around the central axis of the sliding rod, improving the stability of the overall structure;

[0025] 3. Through the arrangement of the adjusting disc, the synchronizing rod and the docking part, the adjusting disc is connected to multiple limiting rods through multiple synchronizing rods to connect all the limiting rods in series. Driving the adjusting disc to rotate can synchronously drive all the limiting rods to approach or move away from the rotating rod; after the size of the adjusting area is adjusted, the free rotation of the adjusting disc is restricted through the docking part to fix the size of the adjusting area, greatly improving the convenience of adjusting the size of the adjusting area. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram showing the steel pipe coil in Embodiment 1;

[0027] Figure 2 It is a schematic diagram of the overall structure of Embodiment 1;

[0028] Figure 3 It is a partial cross-sectional view showing the cutting surface in Embodiment 1;

[0029] Figure 4 It is a schematic diagram of the overall structure of Embodiment 2;

[0030] Figure 5FIG. 0 is a partial cross-sectional view showing the docking member in Embodiment 2.

[0031] Reference numeral description: 1, support; 11, bottom plate; 12, mounting seat; 13, second reinforcing rib; 2, rotating seat; 21, rotating rod; 22, first reinforcing rib; 221, avoidance channel; 23, second docking groove; 3, limiting rod; 31, adjustment area; 4, adjustment assembly; 41, sliding rod; 411, second limiting hole; 42, sliding sleeve; 421, first limiting hole; 422, cutting surface; 423, connecting sleeve; 43, limiting bolt; 5, adjustment disc; 51, synchronizing rod; 52, first docking groove; 53, mounting bracket; 6, docking member; 61, docking block; 62, return spring; 63, pulling rod; 64, driving rod; 7, steel pipe coil. Detailed implementation manners

[0032] The following further elaborates on this application Figure 1 - with reference to the Figure 5 drawings for a more detailed description.

[0033] Embodiment 1:

[0034] The embodiment of this application discloses an adjustable steel pipe coiling device.

[0035] Referring to Figure 1 and Figure 2 , an adjustable steel pipe coiling device includes a support 1 and a rotating seat 2. In this embodiment, the support 1 includes a bottom plate 11 and a mounting seat 12. The mounting seat 12 has a cylindrical structure and is fixedly installed on the upper surface of the bottom plate 11. The mounting seat 12 is fixedly installed with a second reinforcing rib 13. One end of the second reinforcing rib 13 is fixedly connected to the outer peripheral wall of the mounting seat 12, and the other end of the second reinforcing rib 13 is fixedly connected to the upper surface of the bottom plate 11.

[0036] Referring to Figure 1 and Figure 2 , the rotating seat 2 has a cylindrical structure. The rotating seat 2 is arranged on the top of the mounting seat 12 and is coaxially arranged with the mounting seat 12. A rotating rod 21 is coaxially fixed to the bottom wall of the rotating seat 2. The rotating rod 21 is rotatably installed in the mounting seat 12. The rotating seat 2 is rotatably installed on the mounting seat 12 of the support 1 through the rotating rod 21. The rotating seat 2 is installed with a plurality of limiting rods 3. The plurality of limiting rods 3 are arranged at intervals around the axial direction of the rotating rod 21. The axial direction of each limiting rod 3 is parallel to the axial direction of the rotating rod 21. An adjustment area 31 is formed between the plurality of limiting rods 3. The steel pipe is coiled outside the plurality of limiting rods 3 (that is, the steel pipe is coiled outside the adjustment area 31 to form a steel pipe coil 7).

[0037] Referring to Figure 1 and Figure 2, the limiting rod 3 is slidably connected to the rotating seat 2, and an adjusting assembly 4 is arranged between the limiting rod 3 and the rotating seat 2. The adjusting assembly 4 is used to adjust the distance between the limiting rod 3 and the rotating rod 21 to adjust the size of the adjusting area 31; the adjusting assembly 4 includes a sliding rod 41 and a limiting member. The two ends of the sliding rod 41 extend along the radial direction of the rotating rod 21, and one end of the sliding rod 41 is fixedly connected to the outer peripheral wall of the rotating seat 2; in this embodiment, a plurality of sliding rods 41 are provided, and the number of sliding rods 41 corresponds to the number of limiting rods 3. One end of each limiting rod 3 is slidably installed on the corresponding sliding rod 41 to be able to approach or move away from the rotating rod 21.

[0038] Refer to Figure 2 , Figure 3 , the limiting member is arranged between the limiting rod 3 and the corresponding sliding rod 41 to limit the relative position between the limiting rod 3 and the corresponding sliding rod 41; the limiting member includes a sliding sleeve 42 and a limiting bolt 43. The sliding sleeve 42 is installed at one end of the limiting rod 3, and the sliding sleeve 42 is slidably sleeved on the corresponding sliding rod 41. The limiting rod 3 is slidably installed on the corresponding sliding rod 41 through the sliding sleeve 42; the sliding sleeve 42 is provided with a first limiting hole 421, and the sliding rod 41 is provided with a plurality of second limiting holes 411. The plurality of second limiting holes 411 are arranged at intervals along the length direction of the sliding rod 41. The limiting bolt 43 sequentially passes through the first limiting hole 421 and the second limiting hole 411 and is threadedly connected to the first limiting hole 421.

[0039] Refer to Figure 2 , Figure 3 , a connecting sleeve 423 is fixedly installed on the outer peripheral wall of the sliding sleeve 42. One end of the limiting rod 3 is inserted into the connecting sleeve 423. The limiting rod 3 is installed on the sliding sleeve 42 through the connecting sleeve 423. The limiting rod 3 and the connecting sleeve 423 can be connected to each other by bolting or by threaded connection. In this embodiment, the limiting rod 3 and the connecting sleeve 423 are in threaded connection (the thread is not shown in the figure).

[0040] Refer to Figure 1 , Figure 2 , the rotating seat 2 is fixedly installed with a plurality of first reinforcing ribs 22. The plurality of first reinforcing ribs 22 are arranged at intervals around the axial direction of the rotating shaft. The plurality of first reinforcing ribs 22 correspond to the plurality of sliding rods 41. One end of the first reinforcing rib 22 is fixedly connected to the outer peripheral wall of the rotating seat 2, and the other end is fixedly connected to the free end of the corresponding sliding rod 41 (that is, the end of the sliding rod 41 far from the rotating seat 2) to support the free end of the corresponding sliding rod 41.

[0041] Refer to Figure 2 , Figure 3, there is a gap between the top wall of each first reinforcing rib 22 and the corresponding sliding rod 41 to form an avoidance channel 221. The avoidance channel 221 is used to provide an avoidance space for the sliding of the sliding sleeve 42, so that the sliding sleeve 42 can displace along the length direction of the sliding rod 41; a cutting surface 422 is provided on the outer peripheral wall of the sliding sleeve 42, and the cutting surface 422 abuts against the side wall of the first reinforcing rib 22 close to the avoidance channel 221, so that the length direction of the limiting rod 3 and the length direction of the rotating rod 21 are kept consistent.

[0042] It should be noted that in this embodiment, the way to drive the rotating seat 2 to rotate is manual drive. When coiling a steel pipe that is not easy to bend, the way to drive the rotating seat 2 to rotate can be selected as motor drive.

[0043] The implementation principle of Embodiment 1 of this application is as follows: By arranging a plurality of limiting rods 3, one end of the steel pipe is connected to the limiting rod 3, and the rotating seat 2 is driven to rotate to coil the steel pipe, so that the steel pipe is coiled outside the adjustment area 31 to form a steel pipe coil 7; the sliding sleeve 42 can drive the limiting rod 3 to approach or move away from the rotating rod 21, and the distance between the limiting rod 3 and the rotating rod 21 is adjusted to adjust the size of the adjustment area 31, so that the inner diameter of the coiled steel pipe coil 7 is changed, so that steel pipe coils 7 with different inner diameters can be coiled, improving the adaptability of the overall structure.

[0044] Embodiment 2:

[0045] This application embodiment discloses an adjustable steel pipe coiling device.

[0046] Referring to Figure 4 、 Figure 5 , the difference between the adjustable steel pipe coiling device disclosed in this application embodiment and Embodiment 1 is that:

[0047] In this embodiment, an adjustment disk 5 is installed on the top of the rotating seat 2. The adjustment disk 5 and the rotating seat 2 are coaxially arranged. A rotating sleeve is fixedly installed on the lower surface of the adjustment disk 5. The rotating sleeve is sleeved on the outer peripheral wall of the rotating seat 2. The adjustment disk 5 is rotatably installed on the rotating seat 2 through the rotating sleeve; a plurality of synchronizing rods 51 are arranged on the upper surface of the adjustment disk 5. The plurality of synchronizing rods 51 are correspondingly arranged with the plurality of limiting rods 3. One end of the synchronizing rod 51 is hinged to the upper surface of the adjustment disk 5, and the other end is hinged to the outer peripheral wall of the connecting sleeve 423 of the corresponding limiting rod 3.

[0048] Referring to Figure 4 、 Figure 5A docking piece 6 is provided between the adjusting disk 5 and the rotating seat 2, and the docking piece 6 is used to limit the free rotation of the adjusting disk 5; a mounting frame 53 is fixedly installed on the upper surface of the adjusting disk 5, and the adjusting disk 5 is provided with a first docking groove 52, which is a through groove running through the adjusting disk 5, and the mounting frame 53 is located at the top of the first docking groove 52; a second docking groove 23 is provided on the top wall of the rotating seat 2, and the first docking groove 52 and the second docking groove 23 are arranged opposite to each other, and the shapes of the first docking groove 52 and the second docking groove 23 are adapted to each other.

[0049] The docking member 6 includes a docking block 61 and a return spring 62. The docking block 61 is slidably installed in the first docking groove 52. The shape of the docking block 61 is compatible with the shape of the first docking groove 52. In this embodiment, the cross-sectional shape of the docking block 61 is a polygon; one end of the return spring 62 is fixedly connected to the docking block 61, and the other end is fixedly connected to the mounting bracket 1 of the adjusting disk 5. The return spring 62 normally makes the docking block 61 match and be inserted in the second docking groove 23; a pull rod 63 is fixedly installed on the top wall of the docking block 61, one end of the pull plate rod is fixedly connected to the docking block 61, and the other end passes through the mounting frame 53 and is connected to the driving rod 64.

[0050] The implementation principle of Example 2 of the present application is as follows: under normal conditions, the docking block 61 is inserted into the second docking groove 23 under the action of the reset spring 62, so that the adjustment disk 5 and the rotating seat 2 are connected as a whole. When the size of the adjustment area 31 needs to be adjusted, the driving rod 64 is pulled, and the driving rod 64 drives the docking block 61 to disengage from the second docking groove 23 through the pulling rod 63. Then, the driving rod 64 is rotated to drive the adjustment disk 5 to rotate. The adjustment disk 5 drives all the limit rods 3 to synchronously approach or synchronously move away from the rotating rod 21 through multiple synchronization rods 51 to adjust the size of the adjustment area 31, thereby improving the convenience of adjusting the size of the adjustment area 31.

[0051] After the size of the adjustment area 31 is adjusted, the driving rod 64 is released, and the docking block 61 is inserted into the second docking groove 23 under the action of the reset spring 62 to fix the adjustment disk 5, and then the position of the sliding sleeve 42 is limited by the limiting bolt 43. The combination of the docking block 61 and the synchronization rod 51 can share the pressure on the limiting bolt 43, thereby reducing the possibility of deformation of the limiting bolt 43 caused by the pressure generated by the winding of the steel pipe during the winding process.

[0052] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An adjustable coiled steel pipe device, characterized in that: It includes a bracket (1) and a rotating seat (2). The rotating seat (2) is provided with a rotating rod (21), and the rotating rod (21) is rotatably installed on the bracket (1). The rotating seat (2) is rotatably installed on the bracket (1) through the rotating rod (21); a limiting rod (3) is slidably installed on the rotating seat (2). A plurality of the limiting rods (3) are arranged at intervals around the axial direction of the rotating rod (21), and an adjusting area (31) is formed between the plurality of the limiting rods (3); an adjusting component (4) is provided between the limiting rod (3) and the rotating seat (2), and the adjusting component (4) is used to adjust the distance between the limiting rod (3) and the rotating rod (21) to adjust the size of the adjusting area (31).

2. The adjustable coiled steel pipe device according to claim 1, characterized in that: The adjusting component (4) includes a sliding rod (41) and a limiting member. The two ends of the sliding rod (41) extend along the radial direction of the rotating rod (21). One end of the sliding rod (41) is connected to the outer peripheral wall of the rotating seat (2). A plurality of the sliding rods (41) are provided and are arranged corresponding to the plurality of the limiting rods (3). One end of each limiting rod (3) is slidably installed on the corresponding sliding rod (41) so as to be able to approach or move away from the rotating rod (21); the limiting member is provided between the limiting rod (3) and the corresponding sliding rod (41) to limit the relative position between the limiting rod (3) and the corresponding sliding rod (41).

3. The adjustable coiled steel pipe device according to claim 2, wherein: The limiting member includes a sliding sleeve (42) and a limiting bolt (43). The sliding sleeve (42) is provided at one end of the limiting rod (3). The sliding sleeve (42) is slidably sleeved on the corresponding sliding rod (41). The limiting rod (3) is slidably installed on the corresponding sliding rod (41) through the sliding sleeve (42); the sliding sleeve (42) is provided with a first limiting hole (421), and the sliding rod (41) is provided with a plurality of second limiting holes (411). The limiting bolt (43) sequentially passes through the first limiting hole (421) and the second limiting holes (411) and is threadedly connected to the first limiting hole (421).

4. The adjustable coiled steel pipe device according to claim 3, characterized in that: A plurality of first reinforcing ribs (22) are provided on the outer peripheral wall of the rotating seat (2). The plurality of the first reinforcing ribs (22) are arranged corresponding to the plurality of the sliding rods (41). One end of the first reinforcing rib (22) is connected to the outer peripheral wall of the rotating seat (2), and the other end is connected to the free end of the corresponding sliding rod (41).

5. The adjustable coiled steel pipe device according to claim 4, characterized in that: An avoidance channel (221) for the sliding sleeve (42) to slide is formed between the first reinforcing rib (22) and the corresponding sliding rod (41). The outer peripheral wall of the sliding sleeve (42) has a cutting surface (422), and the cutting surface (422) abuts against the side wall of the first reinforcing rib (22) close to the avoidance channel (221).

6. The adjustable coiled steel pipe device according to claim 3, characterized in that: A connecting sleeve (423) is provided on the outer peripheral wall of the sliding sleeve (42). One end of the limiting rod (3) is inserted into the connecting sleeve (423), and the limiting rod (3) is detachably connected to the connecting sleeve (423).

7. The adjustable coiled steel pipe device according to claim 1, characterized in that: The rotating seat (2) is rotatably installed with an adjusting disc (5). The adjusting disc (5) is hinged with a plurality of synchronizing rods (51). The plurality of synchronizing rods (51) are arranged corresponding to the plurality of limiting rods (3). One end of the synchronizing rod (51) is hinged to the adjusting disc (5), and the other end is hinged to the corresponding limiting rod (3). A docking member (6) for restricting the free rotation of the adjusting disc (5) is provided between the adjusting disc (5) and the rotating seat (2).

8. The adjustable coiled steel pipe device according to claim 7, characterized in that: The adjusting disc (5) is provided with a first docking groove (52), and the top wall of the rotating seat (2) is provided with a second docking groove (23). The docking member (6) includes a docking block (61) and a return spring (62). The docking block (61) is slidably installed in the first docking groove (52). The return spring (62) is arranged between the docking block (61) and the adjusting disc (5). The return spring (62) normally makes the docking block (61) be inserted into the second docking groove (23) in a matching manner. The cross-section of the docking block (61) is polygonal.

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