A large-mass long pipe welding detection device and method

Abstract

The present invention provides a large-mass long tube welding detection device and method, which includes: S1, placing the tube body of the long tube to be detected in a support and limiting mechanism, and supporting it between the abutting rollers; S2, moving the clamping and rotating mechanism along the second direction, and clamping the connecting end; S3, adjusting the end to the detection position through the detection mechanism; S4, driving the long tube to be detected to rotate around its axis through the clamping and rotating mechanism, and performing circumferential detection on the end welding part through the detection camera. The various mechanisms of the present invention cooperate with each other, not only can they be adjusted to be suitable for long tubes of different models through movement, but also can ensure that all parts of the long tube can rotate stably and synchronously. Compared with conventional detection equipment, the present application can avoid the problem of bending or damage of the tube body during rotation due to lack of effective support, and can also completely eliminate the friction damage to the tube body caused by the support position and the problem of lateral deviation during rotation.

Description

Technical Field

[0001] The invention relates to the technical field of component processing, and in particular to a large-mass long-tube welding detection device and method. Background Art

[0002] One end of a long tube component with a mass of more than 10kg and a length of more than one meter is usually configured as a connection end, and the other end is welded with a terminal. In order to ensure the sealing and structural integrity of these long tube components during use, the actual processing process has high requirements for the terminal welding process. Therefore, comprehensive quality inspection after welding is an indispensable link.

[0003] Due to the large size and weight of long tubes, conventional testing equipment and methods are difficult to achieve all-round quality control. During the testing process, these long tubes need to be rotated continuously to achieve comprehensive circumferential testing. However, during this process, the tube body of the long tube is prone to bending or damage during rotation due to the lack of effective support. In severe cases, it may even break during rotation, which will affect its overall performance and service life. At present, steel support plates are generally used to support the middle section of the tube body. However, on the one hand, due to the long-term high load at the conventional support position, it will cause great wear to the tube body during rotation. On the other hand, this support method cannot ensure the stability of the tube body during rotation, thereby interfering with the test results. Summary of the invention

[0004] To this end, the technical problem to be solved by the present invention is to overcome the problem in the prior art that a large-mass long tube is easily damaged and unstable during a rotation detection process, and to provide a large-mass long tube welding detection device and method.

[0005] In order to solve the above technical problems, the present invention provides a large-mass long tube welding detection method, which includes: a clamping and rotating mechanism, the clamping and rotating mechanism includes a clamping component, the clamping component moves along a first direction and rotates around a rotation center line, and the end of the long tube to be detected is clamped in the clamping component; a detection mechanism, which includes a positioning component and a detection component, the welding end of the long tube to be detected is located in the positioning component, the detection mechanism is arranged on one side of the positioning component, and includes a detection camera arranged toward the positioning component; at least one supporting and limiting mechanism, the supporting and limiting mechanism is arranged between the clamping and rotating mechanism and the detection mechanism, any of the supporting and limiting mechanisms includes two moving parts, the two moving parts are arranged in a mirror-symmetrical manner in the second direction, and move relative to each other in the second direction respectively, and any of the moving parts is provided with There are at least two abutment rollers, and the tube body of the long tube to be detected is clamped between the four abutment rollers, and a guide inclined surface is provided at the bottom of the moving part; the support and limiting mechanism also includes a pushing component, and the pushing component is arranged between at least two of the moving parts to synchronously drive at least two of the moving parts to move, and it includes a pushing driver, a connecting member and at least two guide rollers, and the connecting member moves along the height direction of the device through the pushing driver, and at least two guide rollers are respectively connected to the connecting member and respectively abut against the corresponding guide inclined surfaces to roll, and when the guide rollers rise, the two moving parts approach each other along the second direction; an avoidance groove is provided on the moving part, and the avoidance groove is arranged as an arc-shaped groove structure, and when the support and limiting mechanism is in a working state, at least part of the long tube to be detected is embedded in the avoidance groove.

[0006] In one embodiment of the present invention, it includes a first support and limit mechanism and a second support and limit mechanism, the first support and limit mechanism is arranged close to the clamping and rotating mechanism, and moves synchronously with the clamping and rotating mechanism along the first direction; the second support and limit mechanism is arranged close to the detection mechanism.

[0007] In one embodiment of the present invention, it also includes a base frame, on which a first adjustment module and a second adjustment module are provided, the first adjustment module and the second adjustment module both extend along a first direction, the clamping and rotating mechanism is slidably connected to the first adjustment module, and the first support and limiting mechanism is slidably connected to the second adjustment module.

[0008] In one embodiment of the present invention, the clamping and rotating mechanism also includes a first fixed plate and a connecting frame, the first fixed plate is connected to a first horizontal driver, the working end of the first horizontal driver is connected to one side of the connecting frame to drive the connecting frame to move in a first direction, and a rotation driver is provided on the other side of the connecting frame, the working end of the rotation driver is connected to the clamping assembly to drive the clamping assembly to rotate around the rotation center line.

[0009] In one embodiment of the present invention, the clamping assembly comprises at least three clamping jaws, and the at least three clamping jaws are relatively close to / far apart from each other to clamp / release the connecting end of the long tube to be inspected.

[0010] In one embodiment of the present invention, the detection mechanism includes a second fixed plate, the positioning assembly includes at least one positioning detector, a second horizontal driver and a push plate, the positioning detector and the second horizontal driver are respectively connected to the second fixed plate, wherein the positioning detector is arranged toward the end of the long tube to be detected, and the push plate is connected to the working end of the second horizontal driver and moves along the first direction.

[0011] In one embodiment of the present invention, the detection component includes an adjustment frame, which is supported on one side of the positioning component and includes a plurality of movable joints, and the detection camera is connected to the free end of the adjustment frame.

[0012] In one embodiment of the present invention, the support and limiting mechanism also includes a base plate, a support frame, a horizontal guide rail and a reset member, the support frame is connected to both sides of the base plate along the second direction, the two ends of the horizontal guide rail are respectively connected to the two support frames, the two movable members are respectively slidably connected to the horizontal guide rail, and the reset member is arranged between the two movable members.

[0013] In one embodiment of the present invention, it also includes a control system, and the clamping and rotating mechanism, the detecting mechanism and the supporting and limiting mechanism are respectively connected to the control system.

[0014] The present invention also provides a large-mass long tube welding detection method, which performs large-mass long tube welding detection through the above-mentioned large-mass long tube welding detection equipment, including the following steps: step S1, placing the tube body of the long tube to be detected in at least one supporting and limiting mechanism, and supporting it between multiple abutment rollers, and at the same time, making the connecting end of the long tube to be detected face the clamping and rotating mechanism, and the end face the detection mechanism; step S2, moving the clamping and rotating mechanism along the second direction, and clamping the connecting end; step S3, adjusting the end to the detection position through the detection mechanism; step S4, driving the long tube to be detected to rotate around its axis through the clamping and rotating mechanism, and at the same time performing circumferential detection on the end welding part through the detection camera, during this process, the multiple abutment rollers all rotate synchronously with the long tube to be detected.

[0015] In one embodiment of the present invention, in step S1, after the tube body enters the support and limiting mechanism, the plurality of abutting rollers are relatively close to each other until they abut against the tube body respectively, so as to form multi-point fixation of the tube body.

[0016] In one embodiment of the present invention, in step S2, the connection end is clamped by at least three clamping claws; in step S3, the connection end is pushed along the second direction by the detection mechanism so that it reaches the working range of the detection camera.

[0017] The above technical solution of the present invention has the following advantages compared with the prior art:

[0018] The large-mass long tube welding detection equipment and method described in the present invention supports and limits the tube body of the long tube to be detected by at least one supporting and limiting mechanism, and then the clamping and rotating mechanism drives the detection long tube to rotate, and the detection mechanism performs circumferential detection of the welding quality of the end position during the rotation. In this process, the various mechanisms cooperate with each other, which can not only be adjusted to be suitable for long tubes of different models through movement, but also ensure that all parts of the long tube can rotate stably and synchronously. Compared with conventional detection equipment, the present application can avoid the problem of bending or damage of the tube body during rotation due to lack of effective support, and can also completely eliminate the friction damage to the tube body caused by the support position and the problem of lateral deviation during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of a large-mass long tube welding detection device in a preferred embodiment of the present invention;

[0021] Figure 2 yes Figure 1 The enlarged schematic diagram at A in the middle;

[0022] Figure 3 yes Figure 1 The enlarged schematic diagram of point B in the middle;

[0023] Figure 4 yes Figure 1 The internal structure diagram of the support and limit mechanism in the large-mass long tube welding inspection equipment shown;

[0024] Figure 5 yes Figure 2 The front view of the support and limiting mechanism is shown.

[0025] Description of the accompanying drawings: 100, base frame; 110, first adjustment module; 120, second adjustment module; 200, clamping rotation mechanism; 210, first fixed plate; 220, first horizontal driver; 230, connecting frame; 240, rotation driver; 250, clamping assembly; 251, clamping claw; 300, detection mechanism; 310, second fixed plate; 320, positioning assembly; 321, positioning detector; 322, second horizontal driver; 323, push plate; 330, detection assembly; 331, adjustment frame; 33 2. Detection camera; 400. Support and limit mechanism; 410. Bottom plate; 420. Support frame; 430. Horizontal guide rail; 440. Moving part; 441. Abutment roller; 442. Avoidance groove; 443. Guide slope; 450. Push assembly; 451. Push driver; 452. Linking part; 453. Guide roller; 460. Reset part; 500. Long tube to be detected; 510. Tube body; 520. Connecting end; 530. End; 1001. Rotation center line; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0027] Embodiment 1

[0028] See also Figure 1 As shown, this embodiment provides a large-mass long tube welding detection device, which is used for large-mass long tube welding detection, and includes: a clamping rotation mechanism 200, the clamping rotation mechanism 200 includes a clamping assembly 250, the clamping assembly 250 moves along a first direction X and rotates around a rotation center line 1001, and the end of the long tube 500 to be detected is clamped in the clamping assembly 250; a detection mechanism 300, which includes a positioning assembly 320 and a detection assembly 330, the welding end 530 of the long tube 500 to be detected is located in the positioning assembly 320, and the detection mechanism 300 is arranged in the positioning assembly On one side of the component 320, it includes a detection camera 332 arranged toward the positioning component 320; at least one support and limiting mechanism 400, the support and limiting mechanism 400 is arranged between the clamping and rotating mechanism 200 and the detection mechanism 300, and any of the support and limiting mechanisms 400 includes two moving parts 440, and the two moving parts 440 are arranged in a mirror-symmetrical manner in the second direction Y, and move relatively along the second direction Y respectively, and any of the moving parts 440 is provided with at least two abutment rollers 441, and the tube body 510 of the long tube 500 to be detected is clamped between the four abutment rollers 441.

[0029] The large-mass long tube welding detection equipment described in this embodiment supports and limits the tube body 510 of the long tube 500 to be detected by at least one supporting and limiting mechanism 400, and then the clamping and rotating mechanism 200 drives the long tube to be detected to rotate, and the detection mechanism 300 performs circumferential detection on the welding quality of the end head 530 during the rotation. In this process, the various mechanisms cooperate with each other, not only can they be adjusted to be suitable for long tubes of different models through movement, but also can ensure that all parts of the long tube can rotate stably and synchronously. Compared with conventional detection equipment, the present application can avoid the problem of bending or damage of the tube body 510 during rotation due to lack of effective support, and can also completely eliminate the friction damage to the tube body 510 caused by the support position and the problem of lateral deviation during rotation.

[0030] It is worth noting that, for the convenience of expression, this embodiment defines the length direction of the large-mass long tube welding detection equipment as the first direction X, the width direction of the equipment as the second direction Y, and the height direction of the equipment as the third direction Z, wherein the first direction X, the second direction Y and the third direction Z are arranged perpendicular to each other in pairs, and the first direction X and the second direction Y are located in the same plane.

[0031] See also Figure 1 and Figure 2 As shown, the clamping and rotating mechanism 200 and the detection mechanism 300 in this embodiment are arranged at intervals along the first direction X, wherein the clamping and rotating mechanism 200 is used to reinforce the connecting end 520 of the long tube and provide a rotational driving force for the long tube, and the detection mechanism 300 is used to perform an all-round detection of the welding quality of the end 530 of the long tube. The clamping and rotating mechanism 200 also includes a first fixed plate 210 and a connecting frame 230, the first fixed plate 210 is connected to a first horizontal driver 220, the working end of the first horizontal driver 220 is connected to one side of the connecting frame 230 to drive the connecting frame 230 to move along the first direction X, and the other side of the connecting frame 230 is provided with a rotation driver 240, the working end of the rotation driver 240 is connected to the clamping assembly 250 to drive the clamping assembly 250 to rotate around the rotation center line 1001. Specifically, the rotation center line in this embodiment coincides with the axial direction of the tube body 510. Furthermore, the clamping assembly 250 in this embodiment includes at least three clamping jaws 251, and at least three clamping jaws 251 are relatively close to / far away from each other to clamp / release the connecting end 520. In other embodiments, the clamping jaws 251 can be set to other ages or connected to other positions, and the present invention does not specifically limit this.

[0032] In this embodiment, see Figure 3As shown, the detection mechanism 300 includes a second fixed plate 310, and the positioning assembly 320 includes at least one positioning detector 321, a second horizontal driver 322, and a push plate 323. The positioning detector 321 and the second horizontal driver 322 are respectively connected to the second fixed plate 310, wherein the positioning detector 321 is arranged toward the end 530 of the long tube 500 to be detected, and the push plate 323 is connected to the working end of the second horizontal driver 322 and moves along the first direction X. Since the clamping and rotating mechanism 200 moves the long tube in the first direction X by its own movement, in order to prevent the long tube from moving excessively so that its end plate exceeds the detection range of the detection mechanism 300, it is necessary to adjust the actual position of the end 530 through the push plate 323 in cooperation with the clamping and rotating mechanism 200. Furthermore, the detection component 330 includes an adjustment frame 331, which is supported on one side of the positioning component 320 and includes a plurality of movable joints. The detection camera 332 is connected to the free end of the adjustment frame 331, thereby further improving the detection range.

[0033] See also Figure 1 As shown, this embodiment includes a first support and limit mechanism 400 and a second support and limit mechanism 400, wherein the first support and limit mechanism 400 is arranged close to the clamping and rotating mechanism 200 and moves synchronously with the clamping and rotating mechanism 200 along the first direction X; the second support and limit mechanism 400 is arranged close to the detection mechanism 300. The first support and limit mechanism 400 and the second support and limit mechanism 400 are arranged at intervals, wherein the second support and limit mechanism 400 is a fixed structure, which supports the tube body 510 near the end head 530, thereby ensuring the stability of the end head 530 and improving the detection accuracy; the first support and limit mechanism 400 can adjust its actual installation position along the first direction X, thereby achieving support for different long tubes.

[0034] Furthermore, the present embodiment further includes a base frame 100, on which a first adjustment module 110 and a second adjustment module 120 are provided, the first adjustment module 110 and the second adjustment module 120 both extend along the first direction X, the clamping and rotating mechanism 200 is slidably connected to the first adjustment module 110, and the first support and limit mechanism 400 is slidably connected to the second adjustment module 120. Based on this, the clamping and rotating mechanism 200 and the first support and rotating mechanism in the present application can both be adaptively adjusted according to the size of the long tube 500 to be detected, thereby increasing their scope of use.

[0035] See also Figure 4 and Figure 5As shown, the support and limiting mechanism 400 also includes a base plate 410, a support frame 420, a horizontal guide rail 430 and a reset member 460, wherein the support frame 420 is connected to both sides of the base plate 410 along the second direction Y, the two ends of the horizontal guide rail 430 are respectively connected to the two support frames 420, the two moving members 440 are respectively slidably connected to the horizontal guide rail 430, and the reset member 460 is arranged between the two moving members 440. Based on the above structure, the two moving members 440 can move along the horizontal guide rail 430, when the push assembly 450 rises, the two moving members 440 approach each other, and when the push assembly 450 descends, the chain of each moving member 440 can move away from each other and return to the initial position under the action of the reset member 460. Further, the reset member 460 in this embodiment is preferably a compression spring, and in other embodiments, the reset member 460 can also be set to other elements with elastic modulus, and the present application does not make specific restrictions on this.

[0036] See also Figure 4 and Figure 5 As shown, a guiding inclined surface 443 is provided at the bottom of the movable member 440; the supporting and limiting mechanism 400 also includes a pushing assembly 450, which is arranged between at least two of the movable members 440 to synchronously drive at least two of the movable members 440 to move, and includes a pushing driver 451, a connecting member 452 and at least two guide rollers 453, the connecting member 452 is moved along the height direction of the device through the pushing driver 451, at least two guide rollers 453 are respectively connected to the connecting member 452, and respectively abut against the corresponding guiding inclined surfaces 443 to roll, when the guide rollers 453 rise, the two movable members 440 approach each other along the second direction Y, based on this, in the present application, the direction of the force of the pushing assembly 450 can be changed by setting the guiding inclined surface 443, thereby realizing the synchronous and symmetrical driving of the two movable members 440 only by one driving structure. Furthermore, the movable member 440 in this embodiment is provided with an avoidance groove 442 , and the avoidance groove 442 is configured as an arc-shaped groove structure. When the support and limiting mechanism 400 is in a working state, at least a portion of the long tube 500 to be detected is embedded in the avoidance groove 442 .

[0037] This embodiment also includes a control system. The clamping and rotating mechanism 200, the detection mechanism 300, and the support and limiting mechanism 400 are respectively connected to the control system. During the actual production and processing process, the operator can use the control system to perform real-time regulation and control on the above-mentioned structures, thereby improving the flexibility of use of the equipment. Parameters can also be preset through the control system, thereby improving the degree of automation of the equipment.

[0038] Embodiment 2

[0039] This embodiment provides a large-mass long tube welding detection method, which uses the large-mass long tube welding detection device described in the first embodiment to perform welding quality detection of the end 530, and specifically includes the following steps:

[0040] Step S1, place the tube body 510 of the long tube 500 to be detected in at least one supporting and limiting mechanism 400, and support it between multiple abutting rollers 441, and at the same time, make the connecting end 520 of the long tube 500 to be detected face the clamping and rotating mechanism 200, and the end 530 face the detecting mechanism 300; in this embodiment, when the tube body 510 enters the supporting and limiting mechanism 400, the multiple abutting rollers 441 are relatively close until they abut against the tube body 510 respectively, so as to form a multi-point fixation of the tube body 510.

[0041] Step S2 , moving the clamping and rotating mechanism 200 along the second direction Y and clamping the connecting end 520 ; in this embodiment, the connecting end 520 is clamped by at least three clamping claws 251 .

[0042] Step S3, adjusting the end 530 to the detection position through the detection mechanism 300; in this embodiment, the connection end 520 is pushed along the second direction Y by the detection mechanism 300 to reach the working range of the detection camera 332.

[0043] Step S4, driving the long tube 500 to be inspected to rotate around its axis through the clamping and rotating mechanism 200, and at the same time performing circumferential inspection on the welding part of the end 530 through the inspection camera 332. During this process, the plurality of abutment rollers 441 rotate synchronously with the long tube 500 to be inspected.

[0044] In summary, the large-mass long tube welding detection equipment and method described in the present invention supports and limits the tube body 510 of the long tube 500 to be detected by at least one supporting and limiting mechanism 400, and then the clamping and rotating mechanism 200 drives the long tube to be detected to rotate, and the detection mechanism 300 performs circumferential detection on the welding quality of the end head 530 during the rotation. In this process, the various mechanisms cooperate with each other, which can not only be adjusted to be suitable for long tubes of different models through movement, but also ensure that all parts of the long tube can rotate stably and synchronously. Compared with conventional detection equipment, the present application can avoid the problem of bending or damage of the tube body 510 during rotation due to lack of effective support, and can also completely eliminate the friction damage to the tube body 510 caused by the support position and the problem of lateral deviation during rotation.

[0045] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the protection scope of the invention.

Claims

1. A large-mass long tube welding detection equipment, characterized in that: include: A clamping and rotating mechanism, the clamping and rotating mechanism comprising a clamping assembly, the clamping assembly moves along a first direction and rotates around a rotation center line, and the end of the long tube to be detected is clamped in the clamping assembly; The detection mechanism comprises a positioning component and a detection component, wherein the welding end of the long tube to be detected is located in the positioning component, and the detection mechanism is arranged on one side of the positioning component, and comprises a detection camera arranged toward the positioning component; At least one supporting and limiting mechanism, which is arranged between the clamping and rotating mechanism and the detecting mechanism, any of the supporting and limiting mechanisms includes two moving parts, which are arranged in a mirror-symmetrical manner in the second direction and move relative to each other along the second direction respectively, and at least two abutting rollers are arranged on any of the moving parts, and the tube body of the long tube to be detected is clamped between the four abutting rollers, and a guiding inclined surface is arranged at the bottom of the moving part; the supporting and limiting mechanism also includes a pushing component, which is arranged between at least two of the moving parts to synchronously drive at least two of the moving parts to move, and includes a pushing driver, a linking member and at least two guide rollers, and the linking member is moved along the device through the pushing driver Move in the height direction, at least two of the guide rollers are respectively connected to the linkage members, and respectively abut against the corresponding guide inclined surfaces to roll, when the guide rollers rise, the two moving members approach each other along the second direction; an avoidance groove is provided on the moving member, and the avoidance groove is set to an arc-shaped groove structure, when the support and limiting mechanism is in a working state, at least part of the long tube to be detected is embedded in the avoidance groove; the support and limiting mechanism also includes a base plate, a support frame, a horizontal guide rail and a reset member, the support frame is connected to both sides of the base plate along the second direction, the two ends of the horizontal guide rail are respectively connected to the two support frames, the two moving members are respectively slidably connected to the horizontal guide rail, and the reset member is set between the two moving members.

2. The large mass long tube welding detection equipment according to claim 1 is characterized in that: It comprises a first support and limit mechanism and a second support and limit mechanism. The first support and limit mechanism is arranged close to the clamping and rotating mechanism and moves synchronously with the clamping and rotating mechanism along the first direction; the second support and limit mechanism is arranged close to the detection mechanism.

3. The large mass long tube welding detection equipment according to claim 2 is characterized in that: It also includes a base frame, on which a first adjustment module and a second adjustment module are provided, the first adjustment module and the second adjustment module both extend along a first direction, the clamping and rotating mechanism is slidably connected to the first adjustment module, and the first supporting and limiting mechanism is slidably connected to the second adjustment module.

4. The large mass long tube welding detection equipment according to claim 1 is characterized in that: The clamping and rotating mechanism also includes a first fixed plate and a connecting frame, wherein the first fixed plate is connected to a first horizontal driver, a working end of the first horizontal driver is connected to one side of the connecting frame to drive the connecting frame to move in a first direction, and a rotating driver is provided on the other side of the connecting frame, and a working end of the rotating driver is connected to the clamping assembly to drive the clamping assembly to rotate around a rotation centerline.

5. The large mass long tube welding detection equipment according to claim 1 is characterized in that: The clamping assembly comprises at least three clamping jaws, and the at least three clamping jaws are relatively close to / far away from each other to clamp / release the connecting end of the long tube to be tested.

6. The large mass long tube welding detection equipment according to claim 1 is characterized in that: The detection mechanism includes a second fixed plate, and the positioning assembly includes at least one positioning detector, a second horizontal driver and a push plate. The positioning detector and the second horizontal driver are respectively connected to the second fixed plate, wherein the positioning detector is arranged toward the end of the long tube to be detected, and the push plate is connected to the working end of the second horizontal driver and moves along the first direction.

7. The large mass long tube welding detection equipment according to claim 1 is characterized in that: The detection component includes an adjustment frame, which is supported on one side of the positioning component and includes a plurality of movable joints. The detection camera is connected to the free end of the adjustment frame.

8. The large mass long tube welding detection equipment according to claim 1 is characterized in that: It also includes a control system, and the clamping and rotating mechanism, the detecting mechanism and the supporting and limiting mechanism are respectively connected to the control system.

9. A method for detecting welding of a large mass long tube, characterized in that: The large-mass long-tube welding detection device according to any one of claims 1 to 8 is used to perform large-mass long-tube welding detection, comprising the following steps: Step S1, placing the tube body of the long tube to be tested in at least one supporting and limiting mechanism, and supporting it between a plurality of abutting rollers, and at the same time, making the connecting end of the long tube to be tested face the clamping and rotating mechanism, and the end face the testing mechanism; Step S2, moving the clamping and rotating mechanism along a second direction and clamping the connecting end; Step S3, adjusting the end to a detection position by the detection mechanism; Step S4, driving the long tube to be inspected to rotate around its axis through the clamping and rotating mechanism, and at the same time performing circumferential inspection on the end welding part through the inspection camera. During this process, the plurality of abutment rollers rotate synchronously with the long tube to be inspected.

10. The method for detecting welding of a large-mass long tube according to claim 9, characterized in that: In step S1, after the tube body enters the support and limiting mechanism, the plurality of abutting rollers are relatively close to each other until they abut against the tube body respectively, so as to form a multi-point fixation for the tube body.

11. The large mass long tube welding detection method according to claim 9, characterized in that: In step S2, the connection end is clamped by at least three clamping claws; in step S3, the connection end is pushed along the second direction by the detection mechanism so that it reaches the working range of the detection camera.

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