Pipe butt joint device and butt joint method

Abstract

The application relates to a kind of round pipe butt joint devices and butt joint methods, the round pipe butt joint device includes two clamping mechanisms that can clamp round pipe from inside round pipe, two rotating discs that adjust the clamping radius of clamping mechanism in the form of rotation relative to clamping mechanism, and rotating mechanism for driving two rotating discs to rotate respectively and coaxially connecting two clamping mechanisms and two rotating discs. By operating rotating mechanism, two rotating discs are driven to rotate relative to clamping mechanism to adjust corresponding clamping radius respectively, and the butt joint of same or different diameter round pipes is realized, the structure is simple, convenient to operate, small in space occupation, accurate and stable in positioning, and multi-angle butt joint can be realized.

Description

Technical Field

[0001] This invention relates to the field of building construction, and in particular to a circular pipe connection device and connection method. Background Technology

[0002] A circular tube is a component with open ends and a hollow concentric circular cross-section. It is commonly used in building construction, piping, thermal equipment, machinery industry, oil and gas drilling, containers, chemical industry, and for special purposes. During construction, it is often necessary to butt-weld circular tubes of the same or different diameters. The connection of these tubes is closely related to the load-bearing and deformation capacity of the entire component. Circular tube joints are prone to bending and deformation, leading to non-standard joints in single or double tubes, affecting the quality of the component. Therefore, a device is needed to facilitate accurate butt welding of two circular tubes. Existing devices mainly consist of mounting brackets. The principle is that after the bracket is aligned with the circular tube, its position is fixed, allowing for rapid and repeated use. However, this method requires a "one bracket, one tube" configuration, resulting in a large overall space occupation. The external clamping device has poor clamping stability, the bracket is not compatible with other diameter circular tubes, and it cannot connect two circular tubes of different diameters, causing inconvenience in use. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a circular pipe docking device and docking method, which solves the technical problems of existing docking devices such as poor stability, large space occupation, inaccurate positioning, poor versatility of connecting pipe diameters, and inability to dock at multiple angles.

[0004] This invention is achieved through the following solution: a circular tube docking device, comprising:

[0005] A first clamping mechanism and a second clamping mechanism, each of the first clamping mechanism and the second clamping mechanism includes a chassis and at least two telescopic claws that are radially connected to the chassis;

[0006] A first rotating disk that drives all the telescopic claws on the first clamping mechanism to extend and retract by relative rotation, and a second rotating disk that drives all the telescopic claws on the second clamping mechanism to extend and retract by relative rotation, wherein the first rotating disk is rotatably connected to the first clamping mechanism and the second rotating disk is rotatably connected to the second clamping mechanism.

[0007] A rotating mechanism for driving the first rotating disk to rotate relative to the first clamping mechanism and driving the second rotating disk to rotate relative to the second clamping mechanism, the rotating mechanism includes a support rod, a first sleeve sleeved on the support rod and having a length shorter than the support rod, and a second sleeve sleeved on the first sleeve and having a length shorter than the first sleeve. The base of the first clamping mechanism is coaxially fixed to the first end of the support rod, the first rotating disk is coaxially sleeved on the first end of the first sleeve, the base of the second clamping mechanism is coaxially sleeved on the middle part of the first sleeve, and the second rotating disk is coaxially sleeved on the first end of the second sleeve.

[0008] A further improvement of the circular tube docking device of the present invention is as follows:

[0009] The telescopic claw includes an extension block fixed to the chassis and an extension rod slidably mounted on the extension block. The extension block has an extension groove for the extension rod to slide. A limiting post is fixed vertically upward at one end of the extension rod near the chassis. The other end of the extension rod away from the chassis extends out of the extension groove and is fixed with a stop block for abutting against the inner wall of the circular tube. The stop block blocks outside the opening of the extension groove.

[0010] Both the first rotating disk and the second rotating disk are provided with at least two arc-shaped limiting grooves, which are respectively inserted into the at least two limiting posts of the first clamping mechanism and the at least two limiting posts of the second clamping mechanism in a one-to-one correspondence. The at least two arc-shaped limiting grooves are distributed outwardly.

[0011] A further improvement of the circular tube docking device of the present invention is that three telescopic claws are connected to the chassis at equal central angles.

[0012] A further improvement of the circular tube docking device of the present invention is that the outer side of the abutment block is provided with vertical anti-slip grooves.

[0013] A further improvement of the circular tube docking device of the present invention is as follows:

[0014] The support rod is provided with a first external thread at a position equal to the length of the first sleeve at the first end, and the second end of the first sleeve is provided with a first internal thread that matches the first external thread.

[0015] The first sleeve has a second external thread at a position on the chassis of the second clamping mechanism that is the length of the second sleeve, and the second end of the second sleeve has a second internal thread that matches the second external thread.

[0016] A further improvement of the circular tube docking device of the present invention is that a circular handle is fixed to the second end of the support rod, and a ring handle is sleeved on the second end of both the first sleeve and the second sleeve.

[0017] A further improvement of the circular tube docking device of the present invention is that both the circular handle and the annular handle are provided with vertical anti-slip grooves.

[0018] The present invention also provides a method for connecting circular tubes, comprising the following steps:

[0019] Provides a first and a second circular tube to be connected, as well as any of the aforementioned circular tube connection devices;

[0020] The first round tube is sleeved outside the first clamping mechanism, the first sleeve is sleeved on the support rod, and the first rotating disk is rotatably connected to the first clamping mechanism.

[0021] Hold the support rod and rotate the first sleeve relative to it, so that the first rotating disk rotates relative to the first clamping mechanism and drives all the telescopic claws on the first clamping mechanism to extend outward relative to each other until they hit the inner wall of the first round tube and stop rotating the first sleeve.

[0022] The second round tube is sleeved outside the second clamping mechanism, the second sleeve is sleeved on the first sleeve, and the second rotating disk is rotatably connected to the second clamping mechanism.

[0023] Hold the first sleeve and rotate the second sleeve relative to it, so that the second rotating disk rotates relative to the second clamping mechanism and drives all the telescopic claws on the second clamping mechanism to extend outward relative to each other until they hit the inner wall of the second round tube, and stop rotating the second sleeve.

[0024] After docking the first and second round tubes, rotate the first sleeve in opposite directions and cause all the telescopic claws on the first clamping mechanism to retract inwards. At the same time, rotate the second sleeve in opposite directions and cause all the telescopic claws on the second clamping mechanism to retract inwards. Remove the round tube docking device.

[0025] This invention employs an embedded clamping mechanism to clamp and fix round pipes, resulting in a small overall structural footprint. Because the clamping mechanism can rotate freely, it enables multi-angle docking, improving docking quality, especially welding quality. The retractable nature of the telescopic claws, combined with the setting of limiting posts and arc-shaped limiting grooves, converts the rotation of the rotating disk into the translation of the telescopic claws, dynamically increasing the clamping outer diameter and satisfying the clamping alignment requirements for round pipes of different diameters. Furthermore, by using a rotating mechanism to combine two clamping mechanisms and the rotating disk, a two-pipe configuration is achieved on a single frame, further reducing the overall structural space required and facilitating operation. Attached Figure Description

[0026] Figure 1 A schematic diagram of the overall structure of the circular tube docking device of the present invention is shown.

[0027] Figure 2 A schematic diagram showing the connection between the first clamping mechanism and the support rod of the present invention is shown.

[0028] Figure 3 The diagram shows the connection of the first clamping mechanism, the second clamping mechanism, and the first rotating disk when the first sleeve of the present invention is sleeved on the support rod.

[0029] Figure 4 A schematic diagram showing the connection between the second rotating disk and the second sleeve of the present invention is shown.

[0030] Figure 5 A cross-sectional structural schematic diagram of the rotating mechanism of the present invention is shown. Detailed Implementation

[0031] To address the technical problems of existing docking devices, such as poor stability, large space occupation, inaccurate positioning, poor versatility of connecting pipe diameters, and inability to dock at multiple angles, this invention provides a circular pipe docking device and docking method.

[0032] The following description, in conjunction with specific embodiments and accompanying drawings, further illustrates the circular tube docking device and docking method.

[0033] See Figures 1 to 5As shown, a circular tube docking device includes: a first clamping mechanism and a second clamping mechanism. The first clamping mechanism includes a first base 12 and at least two first telescopic claws radially connected to the base 12. The second clamping mechanism includes a second base 22 and at least two second telescopic claws radially connected to the second base 22. A first rotating disk 17, which drives the telescopic claws of the first clamping mechanism to extend and retract through relative rotation, and a second rotating disk 27, which drives the telescopic claws of the second clamping mechanism to extend and retract through relative rotation, are rotatably connected to the first clamping mechanism and the second rotating disk 27 is rotatably connected to the second clamping mechanism. The device is used to drive the... The rotating mechanism for rotating the first rotating disk 17 relative to the first clamping mechanism and driving the second rotating disk 27 relative to the second clamping mechanism includes a support rod 121, a first sleeve 171 sleeved on the support rod 121 and having a length shorter than the support rod 121, and a second sleeve 271 sleeved on the first sleeve 171 and having a length shorter than the first sleeve 171. The first base plate 12 is coaxially fixed to the first end of the support rod 121, the first rotating disk 17 is coaxially sleeved to the first end of the first sleeve 171, the second base plate 22 is coaxially sleeved to the middle part of the first sleeve 171, and the second rotating disk 27 is coaxially sleeved to the first end of the second sleeve 271.

[0034] Specifically: such as Figure 2 As shown, the first telescopic claw includes a first extension block 13 fixed to the first chassis 12 and a first extension rod 11 slidably mounted on the first extension block 13. The first extension block 13 has a first extension groove 14 for the first extension rod 11 to slide. A first limiting post 15 is vertically fixed upwards at one end of the first extension rod 11 near the first chassis 12. The other end of the first extension rod 11, away from the first chassis 12, extends out of the first extension groove 14 and is fixed with a first abutting block for abutting against the inner wall of the circular tube. The first abutting block blocks outside the opening of the first extension groove 14. Figure 3As shown, the second telescopic claw includes a second extension block 23 fixed to the second base 22 and a second extension rod 21 slidably mounted on the second extension block 23. The second extension block 23 has a second extension groove 24 for the second extension rod 21 to slide. A second limiting post 25 is vertically fixed upwards at one end of the second extension rod 21 near the second base 22. The other end of the second extension rod 21, away from the second base 22, extends out of the second extension groove 24 and is fixed with a second abutting block for abutting against the inner wall of the circular tube. The second abutting block blocks the second extension... Outside the slot of groove 24; by setting the first abutting block and the second abutting block, on the one hand, the abutting area between the first telescopic claw and the second telescopic claw and the round tube can be increased, thereby increasing the stability of clamping. On the other hand, it can prevent the first extension rod 11 and the second extension rod 21 from axially dislodging from the first extension groove 14 and the second extension groove 24. In addition, in order to prevent the first extension rod 11 and the second extension rod 21 from radially dislodging from the first extension groove 14 and the second extension groove 24, in this embodiment, the first extension groove 14 and the second extension groove 24 are both set to a T-shaped structure.

[0035] The first rotating disk 17 has at least two first arc-shaped limiting grooves 16 for at least two first limiting posts 15 of the first clamping mechanism to be inserted one-to-one, and the at least two first arc-shaped limiting grooves 16 are distributed outwards; Figure 4 As shown, the second rotating disk 27 has at least two second arc-shaped limiting grooves 26 for at least two second limiting posts 25 of the second clamping mechanism to be inserted one-to-one, and the at least two second arc-shaped limiting grooves 26 are distributed outwardly.

[0036] In this embodiment, the first clamping mechanism and the second clamping mechanism have the same structure, the only difference being that the second base 22 of the second clamping mechanism has a hole for inserting and connecting the first sleeve 171. The first rotating disk 17 and the second rotating disk 27 have the same structure, the only difference being that the first rotating disk 17 has a hole adapted to the diameter of the first sleeve 171, and the second rotating disk 27 has a hole adapted to the diameter of the second sleeve 271. The first base 12, the first extension block 13, and the first telescopic rod 11 have the same thickness to form a plane for placing the first rotating disk 17. The length of the first limiting post 15 is greater than the thickness of the first rotating disk 17 to pass through the corresponding first arc-shaped limiting groove 16. Similarly, the second base 22, the second extension block 23, and the second telescopic rod 21 have the same thickness, and the length of the second limiting post 25 is greater than the thickness of the second rotating disk 27. When the first rotating disk 17 is connected to the first clamping mechanism, the first extension block 13 extends out of the first rotating disk 17 to ensure that the first rotating disk 17 can be placed inside the round tube without affecting the first telescopic claw abutting against the inner wall of the round tube.

[0037] This docking device uses an embedded clamping mechanism to hold and fix the round pipe, resulting in a small overall structural footprint. Because the clamping mechanism can rotate freely, it enables multi-angle docking, improving the quality of docking, especially welding. The telescopic claw's extendable feature, combined with the setting of the limiting post and arc-shaped limiting groove, converts the rotation of the rotating disk into the translation of the telescopic claw, dynamically increasing the clamping outer diameter and meeting the requirements for clamping and aligning round pipes of different diameters. Furthermore, by using a rotating mechanism to combine two clamping mechanisms and the rotating disk, a two-pipe configuration is achieved on a single unit, further reducing the overall structural space required and facilitating operation.

[0038] In a preferred embodiment, the first base 12 has three first telescopic claws connected at equal central angles, and similarly, the second base 22 has three second telescopic claws connected at equal central angles. These improvements enable the clamping mechanism to clamp the cylindrical tube more stably and reliably.

[0039] As a preferred embodiment, both the outer sides of the first abutting block and the outer sides of the second abutting block are provided with vertical anti-slip grooves, which can prevent the round tube from rotating relative to the clamping mechanism on the one hand, and not affect the axial movement of the round tube relative to the clamping mechanism on the other hand.

[0040] In a preferred embodiment: the support rod 121 has a first external thread 173 at a distance from the first end equal to the length of the first sleeve 171, and the second end of the first sleeve 171 has a first internal thread (not shown in the figure) adapted to the first external thread 173; the first sleeve 171 has a second external thread 273 at a distance from the second chassis 22 equal to the length of the second sleeve 271, and the second end of the second sleeve 271 has a second internal thread (not shown in the figure) adapted to the second external thread 273. Through these improvements, when the first limiting post 15 slides along the first arc-shaped limiting groove 16, the first internal thread just engages with the first external thread 173, so as to lock the position of the first limiting post 15 in the first arc-shaped limiting groove 16 at any time, thereby locking the clamping radius of the first clamping mechanism. Similarly, when the second limiting post 25 slides along the second arc-shaped limiting groove 26, the second internal thread just meshes with the second external thread 273 to lock the clamping radius of the second clamping mechanism.

[0041] In a preferred embodiment, a circular handle 122 is fixed to the second end of the support rod 121, a first annular handle 172 is sleeved on the second end of the first sleeve 171, and a second annular handle 272 is sleeved on the second end of the second sleeve 271. The circular handle 122 facilitates gripping the support rod 121, while the first annular handle 172 facilitates rotation of the first sleeve 171 without affecting the sleeve's fit over the support rod 121. The same applies to the second annular handle 272. Furthermore, the outer edges of the circular handle 122, the first annular handle 172, and the second annular handle 272 are all provided with vertical anti-slip grooves.

[0042] A method for connecting round pipes, in conjunction with Figures 1 to 5 As shown, the steps include:

[0043] Step 1: Provide the first and second round pipes to be connected, as well as any of the above-mentioned round pipe connection devices.

[0044] Step 2: Sleeve the first round tube over the first clamping mechanism, sleeve the first sleeve 171 over the support rod 121, and rotatably connect the first rotating disk 17 to the first clamping mechanism.

[0045] Step 3: Hold the support rod 121 and rotate the first sleeve 171 relative to it, so that the first rotating disk 17 rotates relative to the first clamping mechanism and drives all the first telescopic claws on the first clamping mechanism to extend outward relative to each other until they hit the inner wall of the first round tube, and stop rotating the first sleeve 171.

[0046] Step 4: Place the second round tube outside the second clamping mechanism, place the second sleeve 271 on the first sleeve 171, and rotatably connect the second rotating disk 27 to the second clamping mechanism.

[0047] Step 5: Hold the first sleeve 171 and rotate the second sleeve 271 relative to it, so that the second rotating disk 27 rotates relative to the second clamping mechanism and drives all the second telescopic claws on the second clamping mechanism to extend outward relative to each other until they hit the inner wall of the second round tube, and stop rotating the second sleeve 271.

[0048] Step 6: Weld the first and second round tubes. During welding, the first and second round tubes can be moved relative to each other along the axial direction, or the entire docking device can be rotated to achieve multi-angle welding. After welding is completed, rotate the first sleeve 171 in the opposite direction and cause all the first telescopic claws on the first clamping mechanism to retract inwards. At the same time, rotate the second sleeve 271 in the opposite direction and cause all the second telescopic claws on the second clamping mechanism to retract inwards. Remove the round tube docking device in one go.

[0049] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A circular tube docking device, characterized in that, include: A first clamping mechanism and a second clamping mechanism, each of the first clamping mechanism and the second clamping mechanism includes a chassis and at least two telescopic claws that are radially connected to the chassis; A first rotating disk that drives all the telescopic claws on the first clamping mechanism to extend and retract by relative rotation, and a second rotating disk that drives all the telescopic claws on the second clamping mechanism to extend and retract by relative rotation, wherein the first rotating disk is rotatably connected to the first clamping mechanism and the second rotating disk is rotatably connected to the second clamping mechanism. A rotating mechanism for driving the first rotating disk to rotate relative to the first clamping mechanism and driving the second rotating disk to rotate relative to the second clamping mechanism, the rotating mechanism including a support rod, a first sleeve sleeved on the support rod and shorter than the support rod, and a second sleeve sleeved on the first sleeve and shorter than the first sleeve. The base of the first clamping mechanism is coaxially fixed to the first end of the support rod, the first rotating disk is coaxially sleeved on the first end of the first sleeve, the base of the second clamping mechanism is coaxially sleeved on the middle part of the first sleeve, and the second rotating disk is coaxially sleeved on the first end of the second sleeve. The second end of the first sleeve extends out of the second end of the second sleeve, and the second end of the support rod extends out of the second end of the first sleeve.

2. The circular tube docking device as described in claim 1, characterized in that: The telescopic claw includes an extension block fixed to the chassis and an extension rod slidably mounted on the extension block. The extension block has an extension groove for the extension rod to slide. A limiting post is fixed vertically upward at one end of the extension rod near the chassis. The other end of the extension rod away from the chassis extends out of the extension groove and is fixed with a stop block for abutting against the inner wall of the circular tube. The stop block blocks outside the opening of the extension groove. Both the first rotating disk and the second rotating disk are provided with at least two arc-shaped limiting grooves, which are respectively inserted into the at least two limiting posts of the first clamping mechanism and the at least two limiting posts of the second clamping mechanism in a one-to-one correspondence. The at least two arc-shaped limiting grooves are distributed outwardly.

3. The circular tube docking device as described in claim 1, characterized in that, The chassis has three telescopic claws circumscribed at equal central angles.

4. The circular tube docking device as described in claim 2, characterized in that, The outer side of the abutment block is provided with vertical anti-slip grooves.

5. The circular tube docking device as described in claim 1, characterized in that: The support rod is provided with a first external thread at a position equal to the length of the first sleeve at the first end, and the second end of the first sleeve is provided with a first internal thread that matches the first external thread. The first sleeve has a second external thread at a position on the chassis of the second clamping mechanism that is the length of the second sleeve, and the second end of the second sleeve has a second internal thread that matches the second external thread.

6. The circular tube docking device as described in claim 5, characterized in that, The second end of the support rod is fixed with a circular handle, and the second end of the first sleeve and the second end of the second sleeve are both fitted with ring handles.

7. The circular tube docking device as described in claim 6, characterized in that, Both the circular handle and the ring handle are provided with vertical anti-slip grooves on the outside.

8. A method for connecting circular pipes, characterized in that, Including the following steps: Provides a first circular tube and a second circular tube to be connected, and a circular tube connection device as described in any one of claims 1 to 7; The first round tube is sleeved outside the first clamping mechanism, the first sleeve is sleeved on the support rod, and the first rotating disk is rotatably connected to the first clamping mechanism. Hold the support rod and rotate the first sleeve relative to it, so that the first rotating disk rotates relative to the first clamping mechanism and drives all the telescopic claws on the first clamping mechanism to extend outward relative to each other until they hit the inner wall of the first round tube and stop rotating the first sleeve. The second round tube is sleeved outside the second clamping mechanism, the second sleeve is sleeved on the first sleeve, and the second rotating disk is rotatably connected to the second clamping mechanism. Hold the first sleeve and rotate the second sleeve relative to it, so that the second rotating disk rotates relative to the second clamping mechanism and drives all the telescopic claws on the second clamping mechanism to extend outward relative to each other until they hit the inner wall of the second round tube, and stop rotating the second sleeve. After docking the first and second round tubes, rotate the first sleeve in opposite directions and cause all the telescopic claws on the first clamping mechanism to retract inwards. At the same time, rotate the second sleeve in opposite directions and cause all the telescopic claws on the second clamping mechanism to retract inwards. Remove the round tube docking device.

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