Bent pipe detection device and method

Abstract

The invention discloses a bent pipe detection device, a bent pipe comprises an arc-shaped part and straight pipe parts connected to two ends of the arc-shaped part, the bent pipe detection device comprises a camber detection assembly, the camber detection assembly comprises a supporting plate, a placing platform and an adjusting and limiting part, the placing platform is located at the top of the supporting plate, and the adjusting and limiting part is located at the top of the supporting plate; the whole placement platform is semicircular, a plurality of fixing plates are distributed on the placement platform in a 180-degree fan shape with the center of the supporting plate as the circle center, the adjusting and limiting component comprises a plurality of placement plates corresponding to the fixing plates and a driving component, the placement plates are arranged on the corresponding fixing plates in a sliding mode, and the driving component drives the placement plates to rotate. The plurality of placing plates are provided with placing grooves, the plurality of placing grooves jointly form an arc-shaped channel, the arc-shaped channel is suitable for placing an arc-shaped part of a bent pipe, the driving component is mounted on the supporting plate, and a standard detection area is formed through the plurality of bent pipe placing components which are synchronously moved and adjusted. Manual operation is reduced, and detection accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bent pipe detection, and in particular to a bent pipe detection device and method. Background Art

[0002] At present, in the pipe bending industry, the size and shape of the bent pipes often vary depending on the application requirements, which places extremely high demands on the detection of bent pipes. However, the existing bent pipe detection devices have certain limitations in design and function, especially when faced with bent pipes of different sizes, these devices often cannot be effectively adjusted and adapted.

[0003] After searching, it was found that the Chinese invention patent with authorization announcement number CN108246854B discloses a bend detection device. This patent can adapt to a variety of bends of different sizes, lengths and curvatures by designing flexible inspection tools and inspection platforms, effectively reducing the inspection cost and improving production efficiency; however, this patent uses multiple grooves to form a placement area for the bend of the bend of the bend, which is used to detect whether the curvature of the bend can match all the grooves. The positions of the multiple grooves are adjusted by scales, but the curvatures of bends of different sizes are different. Accurate calculation and movement are required when adjusting the distance between the multiple grooves. High accuracy cannot be achieved by scales alone. Therefore, there is a large deviation in the detection of the curvature of multiple bends, which leads to a reduction in the accuracy of the detection. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects in the prior art, form a standard detection area through multiple synchronously movable and adjustable curved pipe placement components, reduce manual operations and improve detection accuracy.

[0005] In order to solve the above technical problems, the technical solution of the present invention is a bend pipe detection device, the bend pipe includes an arc portion and straight pipe portions connected at both ends of the arc portion, and the bend pipe detection device includes:

[0006] A curvature detection component, the curvature detection component includes a support plate, a placement platform and an adjustment limit component, the placement platform is located on the top of the support plate, the placement platform is semicircular as a whole, and the placement platform has a plurality of fixed plates distributed in a 180° fan shape with the center of the support plate as the center;

[0007] The adjusting and limiting component includes a plurality of placement plates corresponding to the fixing plates and a driving component, wherein the placement plates are slidably arranged on the corresponding fixing plates, and a plurality of placement plates are provided with placement grooves, and the plurality of placement grooves together form an arc-shaped channel, and the arc-shaped channel is suitable for placing the arc-shaped portion of the bent pipe;

[0008] The driving component is installed on the supporting plate, and the driving component is suitable for being respectively connected with a plurality of the placing plates so as to drive the plurality of the placing plates to synchronously move linearly in the radial direction on the corresponding fixing plates. The synchronous movement of the plurality of the placing plates is suitable for changing the positions of the plurality of the placing grooves, thereby changing the radius of the arc-shaped channel.

[0009] Further, the driving component includes an adjusting motor and a rotating rod corresponding to the fixing plate;

[0010] The adjusting motor is installed in the supporting plate, the output shaft of the adjusting motor is coaxially arranged with the center of the supporting plate, the rotating rod is rotatably installed at the bottom of the corresponding fixing plate, a plurality of the rotating rods are equipped with synchronous wheels, a plurality of synchronous wheels corresponding to the synchronous wheels on the rotating rods are installed on the output shaft of the adjusting motor, and a synchronous belt is sleeved between the synchronous wheels on the rotating rods and the synchronous wheels on the output shafts of the corresponding adjusting motors;

[0011] The synchronous belt is provided with a connecting plate which moves with the synchronous belt, the top surface of the connecting plate passes through and extends to the outside of the corresponding fixed plate, the fixed plate is provided with a through groove, the connecting plate is slidably arranged in the through groove, a slider is connected to the part of the connecting plate extending out of the fixed plate, a slide rail is provided on the fixed plate, the slider is slidably connected to the slide rail, and the placement plate is connected to the top of the slider.

[0012] Furthermore, the two fixing plates on the outermost sides are end fixing plates, and the two end fixing plates are arranged along a straight line. The placing plate on each end fixing plate is provided with two symmetrically arranged placing grooves, one of which is suitable for placing the corresponding end of the arc-shaped part of the bent pipe, and the other is suitable for placing the corresponding straight pipe part of the bent pipe.

[0013] Furthermore, the bent pipe detection device also includes at least one support frame, which is located on one side of the straight side of the placement platform and is suitable for supporting the bent pipe.

[0014] Furthermore, the bent pipe detection device also includes a hydraulic press, which is located on the straight side of the placement platform. The hydraulic press includes a water inlet, a water outlet, a pressurizing device, a water tank and a pressure gauge installed in the hydraulic press. The water inlet and the water outlet are both connected to the water tank, and the water inlet and the water outlet are suitable for being connected to the two ends of the bent pipe respectively.

[0015] Furthermore, the pipe bending detection device further comprises a pipe cutting machine, the pipe cutting machine is located on the straight side of the placing platform, and two groups of moving components and cutting components corresponding to the moving components are arranged in the pipe cutting machine, the two cutting components are suitable for cutting two straight pipe sections of the bent pipe respectively, and the moving components are suitable for driving the corresponding cutting components to move;

[0016] The cutting assembly comprises a rotating motor, a gear box and a cutting disc, wherein the rotating motor is connected to the gear box, the gear box is connected to the cutting disc, and the rotating motor is suitable for driving the gear in the gear box to rotate so as to drive the cutting disc to rotate;

[0017] The moving assembly includes a linear motor, a threaded rod 1, a guide rod and a transmission sleeve, wherein the linear motor is installed on the pipe cutting machine, the threaded rod 1 is rotatably installed in the pipe cutting machine, the guide rod is fixedly connected in the pipe cutting machine, the transmission sleeve is connected to the gear box, the linear motor is connected to the threaded rod 1 to drive the threaded rod 1 to rotate in the pipe cutting machine, the transmission sleeve is assembled on the outside of the threaded rod 1, the guide rod passes through the inside of the transmission sleeve, the threaded rod 1 is suitable for being driven to rotate to drive the transmission sleeve to move along the axial direction of the threaded rod 1 and slide on the outside of the guide rod, thereby driving the cutting disc to move;

[0018] The detection device also includes a bottom plate, a driving motor is installed on the bottom plate, a threaded rod four is rotatably installed in the bottom plate, a guide plate is fixedly connected to the bottom of the support plate, and the guide plate is assembled on the outside of the threaded rod four. The driving motor is connected to the threaded rod four to drive the threaded rod four to rotate in the bottom plate, thereby driving the guide plate to move along the axis direction of the threaded rod four, and then driving the support plate and all components thereon to move;

[0019] A limiting assembly is installed on one side of the pipe cutting machine, and the limiting assembly includes a connecting shell, a limiting motor, a bidirectional screw rod 2 and two limiting blocks. The connecting shell is connected to one side of the pipe cutting machine, the limiting motor is installed on the connecting shell, and the bidirectional screw rod 2 is rotatably installed in the connecting shell. The two limiting blocks are respectively assembled on two oppositely arranged threads of the bidirectional screw rod 2. A limiting groove is provided on the limiting block, and the limiting groove is suitable for placing the straight pipe part of the bent pipe. The limiting motor is connected to the bidirectional screw rod 2 to drive the bidirectional screw rod 2 to rotate in the connecting shell, thereby driving the two limiting blocks outside the bidirectional screw rod 2 to move toward or in the opposite direction to change the distance between the two limiting blocks.

[0020] Furthermore, a loading assembly and a lowering assembly are respectively provided on both sides of the curvature detection device, the loading assembly includes a loading plate, and the lowering assembly includes a lowering plate;

[0021] A loading and unloading control assembly is respectively installed on one side of the straight edge of the placing platform and on the side of the supporting frame close to the placing platform, and the two loading and unloading control assemblies both include a shell, a control motor is installed on the shell, a bidirectional screw rod 1 is rotatably installed in the shell, and two oppositely arranged threads on the bidirectional screw rod 1 are respectively equipped with an auxiliary component 1 and an auxiliary component 2, the auxiliary component 1 is located in the direction of one side of the unloading plate, and the auxiliary component 2 is located in the direction of one side of the loading plate, the control motor is connected to the bidirectional screw rod 1 so as to drive the bidirectional screw rod 1 to rotate in the shell, and then drive the auxiliary component 1 and the auxiliary component 2 to move toward or in the opposite direction along the axial direction of the threaded rod 1, so as to change the distance between the auxiliary component 1 and the auxiliary component 2;

[0022] The auxiliary component 1 and the auxiliary component 2 each include an adjustment movable plate mounted on the outside of the bidirectional screw 1, a telescopic cylinder mounted on the adjustment movable plate, and a docking plate mounted on the movable end of the telescopic cylinder, wherein a receiving component is provided on the docking plate, and the receiving component is suitable for placing the straight pipe portion of the bent pipe;

[0023] The bottom of the shell is provided with a material unloading auxiliary component, and the material unloading auxiliary component includes a material unloading auxiliary shell, a material unloading auxiliary motor, a second threaded rod and a material unloading auxiliary moving plate, the material unloading auxiliary motor is installed on the material unloading auxiliary shell, the second threaded rod is rotatably installed in the material unloading auxiliary shell, the material unloading auxiliary moving plate is connected to the bottom of the shell, the material unloading auxiliary moving plate is assembled on the outside of the second thread, the material unloading auxiliary motor is connected to the second thread so as to drive the second threaded rod to rotate in the material unloading auxiliary shell, and then drive the material unloading auxiliary moving plate to move along the axial direction of the second threaded rod, thereby driving the shell and all components thereon to move;

[0024] A loading auxiliary component is arranged at the bottom of the unloading auxiliary component, and the loading auxiliary component includes a loading auxiliary shell, a loading auxiliary motor, a threaded rod three and a loading auxiliary moving plate. The loading auxiliary motor is installed on the loading auxiliary shell, the threaded rod three is rotatably installed in the loading auxiliary shell, the loading auxiliary moving plate is assembled on the outside of the threaded rod three, the loading auxiliary moving plate is connected to the unloading auxiliary shell, the loading auxiliary motor is connected to the threaded rod three to be suitable for driving the threaded rod three to rotate in the loading auxiliary shell, thereby driving the loading auxiliary moving plate to move along the axial direction of the threaded rod three, thereby driving the unloading auxiliary shell and all components thereon to move.

[0025] Furthermore, the auxiliary component 1 also includes two rotating rods, a return spring 1 corresponding to the rotating rods, a gear 1 and a gear 2 respectively fixedly mounted on the two rotating rods, and a rotating receiving plate respectively fixedly mounted on the two rotating rods, and the gear 1 and the gear 2 are meshed;

[0026] A rotating cavity 1 is provided on the docking plate corresponding to the auxiliary component 1, and the two rotating rods are both rotatably installed in the rotating cavity 1, one end of the two rotating rods extends to the outside of the docking plate, and the two return springs 1 are respectively sleeved on the outside of the corresponding extended parts of the rotating rods, one end of the return spring 1 is connected to the rotating rod, and the other end of the return spring 1 is connected to the docking plate, and the two rotating receiving plates are both provided with grooves, and the grooves are suitable for placing the straight pipe part of the bent pipe;

[0027] The auxiliary component 2 also includes a rotating shaft, a movable receiving plate fixedly sleeved on the rotating shaft, a third gear fixedly sleeved on the rotating shaft, a second reset spring and a fixed receiving plate;

[0028] A second rotating cavity is provided on the docking plate corresponding to the second auxiliary component, the rotating shaft is rotatably installed in the second rotating cavity, one end of the rotating shaft extends to the outside of the docking plate, the second reset spring is sleeved on the outside of the extended part of the rotating shaft, one end of the second reset spring is connected to the rotating shaft, and the other end of the second reset spring is connected to the docking plate, the fixed receiving plate is fixedly connected to the second rotating cavity, and the fixed receiving plate and the movable receiving plate are both provided with grooves, and the grooves are suitable for placing the straight pipe part of the bent pipe;

[0029] The blanking assembly further comprises a blanking protection plate, the blanking protection plate is located below the blanking plate, there is a gap between the blanking protection plate and the blanking plate, the shell passes through the gap when moving toward the blanking plate, and the shell slides on the blanking protection plate;

[0030] The blanking plate is provided with mating grooves at positions corresponding to the rotating storage plate, the movable storage plate and the fixed storage plate, and the bottom of the blanking plate is provided with racks corresponding to the mating grooves, and the racks are meshed with the gear two and the gear three, and the gear two is adapted to be driven by the rack to rotate when it moves to the mating groove, thereby driving the gear one to rotate, thereby driving the two rotating storage plates to rotate toward or in the opposite direction, and the gear three is adapted to be driven by the rack to rotate when it moves to the mating groove, thereby driving the movable storage plate to rotate, and an inclined surface is provided on one side of the blanking plate where the mating groove is provided.

[0031] Further, the loading assembly further comprises a loading protection plate, the loading protection plate is located below the loading plate, there is a gap between the loading protection plate and the unloading plate, the unloading auxiliary shell passes through the gap when moving toward the loading plate, and the unloading auxiliary shell slides on the loading protection plate;

[0032] The loading plate is hollow, an adjustment plate 1 is fixedly arranged inside the loading plate, a straight groove is formed between the adjustment plate 1 and the inner wall of the long side of the loading plate, an adjustment plate 2 is fixedly arranged inside the loading plate, another straight groove is formed between the adjustment plate 1 and the adjustment plate 2, a curved groove is formed between one side short side of the loading plate and the adjustment plate 1 and the adjustment plate 2, and the curved groove is communicated with the two straight grooves;

[0033] The first adjustment plate and the second adjustment plate are both provided with a contraction groove on one side of the straight groove, the contraction groove is located opposite to the first auxiliary component and the second auxiliary component, a telescopic rod is connected in the contraction groove, a contraction spring is sleeved on the outside of the telescopic rod, a baffle is connected to the movable end of the telescopic rod, the baffle is slidably connected in the contraction groove, one end of the contraction spring is connected to the inner wall of the contraction groove, the other end of the contraction spring is connected to the baffle, the baffle is suitable for closing the corresponding straight groove, and the straight pipe part of the elbow is placed on the baffle;

[0034] A short pull plate is connected to the bottom of the baffle plate close to the curvature detection component, a long pull plate is connected to the bottom of the baffle plate away from the curvature detection component, a long push plate is connected to one side of the rotating storage plate opposite to the gear two, the long push plate is opposite to the short pull plate, and a short push plate is connected to one side of the rotating storage plate opposite to the gear three, the short push plate is opposite to the long pull plate;

[0035] When the auxiliary component one and the auxiliary component two are driven to move toward the loading plate, the short push plate squeezes the long pull plate, and the long push plate squeezes the short pull plate. The short pull plate and the long pull plate respectively drive the corresponding baffles to move in the contraction groove to open the corresponding straight groove, so that the two straight pipe sections of the bent pipe respectively enter the grooves on the two rotating receiving plates and the grooves on the movable receiving plate and the fixed receiving plate.

[0036] The present invention also discloses a method for detecting a bent pipe, which uses the above-mentioned bent pipe detection device and comprises the following steps:

[0037] S1. First, place the bent pipe to be tested on the loading plate, the bent portion of the bent pipe is located at the bent portion groove, the straight pipes at both ends of the bent pipe are located at the two straight portion grooves, the straight portion grooves are closed by the baffle, and the straight pipe part of the bent pipe is placed on the baffle. The auxiliary component 1 and the auxiliary component 2 are moved to the bottom of the loading plate, and the baffle is driven to move to open the straight portion groove, and the bent pipe falls from the straight portion groove onto the auxiliary component 1 and the auxiliary component 2;

[0038] S2, according to the specified size of the bend of the bent pipe to be detected, the regulating motor is started to drive the plurality of placement plates to move synchronously, so as to adjust the positions of the plurality of placement slots to change the size of the arc-shaped channel formed by the plurality of placement slots, the auxiliary component 1 and the auxiliary component 2 are moved and reset to the bend detection assembly and the bent pipe is placed on the plurality of placement plates, and the bent pipe is pushed to detect the bend according to whether it can enter the annular channel;

[0039] S3, the elbow with qualified curvature is stuck in the arc channel, the driving motor is started to drive the entire curvature detection assembly to move, the end face of the straight pipe part of the elbow is moved to the position of the hydraulic press, the water injection port and the water outlet of the hydraulic press are respectively connected to the two ends of the elbow, and the sealing of the elbow is judged by the value displayed on the pressure gauge after water injection;

[0040] S4, if the curvature and sealing of the bent pipe are both qualified, continue to start the driving motor to move until the distance between the end of the arc-shaped part of the bent pipe and the cutting disc of the pipe cutting machine is the required total length of the bent pipe, then start the pipe cutting machine to drive the cutting disc to rotate and move, and cut the two straight sections of the bent pipe;

[0041] S5. After cutting is completed, the curvature detection assembly is reset, and the telescopic cylinders in the auxiliary component one and the auxiliary component two are started to lift the bent pipe from the placement groove and move it to the blanking plate. During the movement, gear two and gear three are respectively engaged with the rack, thereby driving the two rotating storage plates to rotate in opposite directions and the movable storage plate to rotate away from the fixed storage plate, thereby losing the restriction on the bent pipe. During the movement, the bent pipe is pushed to the blanking plate through the fixed storage plate.

[0042] By adopting the above technical solution, the present invention has the following beneficial effects:

[0043] 1. Through the setting of the curvature detection component, before the detection begins, according to the size of the curved pipe to be detected, the adjustment motor in the curvature detection component is started to drive all the synchronous belts to rotate, thereby driving the connecting plate and the placement plate that move synchronously with the synchronous belt to move. The placement grooves opened on all the placement plates form an arc channel as a whole. The arc channel is the standard arc size of the curved pipe to be detected, which realizes fast and accurate curvature adjustment and improves the detection accuracy.

[0044] 2. Through the arrangement of structures such as a hydraulic press and a pipe cutting machine, after the curvature detection, the entire curvature detection assembly and the curved pipes that have passed the curvature detection are driven by the drive motor and the threaded rod four to move together, and are moved to the hydraulic press to detect the sealing of the curved pipes. The curved pipes that have passed the sealing are moved again, and the total length of the entire curved pipe is controlled by the moving distance and cut by the pipe cutting machine, so that the overall detection of the curved pipes is more comprehensive.

[0045] 3. Through the arrangement of structures such as the long push plate and the short push plate, the bent pipe to be tested is placed on the loading plate in advance during loading, and the auxiliary components 1 and 2 used to drive the bent pipe to move and place are moved to the bottom of the unloading plate. The baffle used to limit the position of the bent pipe is moved by the long push plate squeezing the short pull plate and the short push plate squeezing the long pull plate, so that the bent pipe located above the loading plate falls onto the auxiliary components 1 and 2 below the loading plate, and then the bent pipe is sent to the curvature detection component, thereby achieving the effect of automatic loading.

[0046] 4. By setting up structures such as rotating storage plates and movable storage plates, after all the bent pipe inspections are completed, the bent pipe is lifted from the placement groove by the telescopic cylinder and driven to move to the bottom of the unloading plate by auxiliary components one and two. During the movement, gear two and gear three are engaged with the rack at the bottom of the unloading plate in sequence to drive the rotating storage plate and the movable storage plate for placing the bent pipe to rotate. After rotation, the bent pipe loses its restriction and is pushed to the unloading plate by the fixed storage plate, thereby achieving the effect of automatic unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the overall structure of the present invention on the left side;

[0048] Figure 2 The right side schematic diagram of the overall structure of the present invention;

[0049] Figure 3 It is a schematic diagram of the overall moving structure of the curvature detection assembly of the present invention;

[0050] Figure 4 It is a schematic diagram of the internal structure of the curvature detection component of the present invention;

[0051] Figure 5 For the present invention Figure 4Enlarged view of point A in the middle;

[0052] Figure 6 For the present invention Figure 4 Enlarged view of point B in the middle;

[0053] Figure 7 It is a schematic diagram of the structure of the pipe cutting machine of the present invention;

[0054] Figure 8 It is a schematic diagram of the structure of the loading and unloading control assembly of the present invention;

[0055] Fig. 9 For the present invention Figure 8 Enlarged view of point C in the middle;

[0056] Fig.10 For the present invention Figure 8 Enlarged view of point D in the middle;

[0057] Fig.11 It is a schematic diagram of the blanking plate structure of the present invention;

[0058] Fig.12 For the present invention Fig.11 Enlarged view of point E in the middle;

[0059] Fig.13 It is a schematic diagram of the structure of the loading plate of the present invention;

[0060] Fig.14 It is a schematic diagram of the structure of the baffle in the feeding plate of the present invention.

[0061] In the figure: 1. bottom plate;

[0062] 2. Curvature detection assembly; 21. Support plate; 22. Fixing plate; 23. Adjusting motor; 24. Synchronous belt; 25. Connecting plate; 26. Through slot; 27. Slide rail; 28. Sliding block; 29. ​​Placement plate; 210. Placement slot; 211. Rotating rod;

[0063] 3. Support frame;

[0064] 4. Pipe cutting machine; 41. Linear motor; 42. Threaded rod one; 43. Guide rod; 44. Transmission sleeve; 45. Gear box; 46. Rotary motor; 47. Cutting disc; 48. Connecting shell; 49. Limiting motor; 410. Bidirectional screw two; 411. Limiting block; 412. Driving motor; 413. Threaded rod four; 414. Guide plate;

[0065] 51. Hydraulic press; 52. Water inlet; 53. Water outlet;

[0066] 6. Feeding assembly; 61. Feeding plate; 62. Feeding protection plate; 63. Adjustment plate 1; 64. Bend groove; 65. Straight groove; 66. Adjustment plate 2; 67. Baffle; 68. Telescopic rod; 69. Contraction spring; 610. Short pull plate; 611. Long pull plate;

[0067] 7. blanking assembly; 71. blanking plate; 72. blanking protection plate; 73. matching groove; 74. inclined surface; 75. rack;

[0068] 8. Loading and unloading control assembly; 81. Housing; 82. Control motor; 83. Bidirectional screw 1;

[0069] 91. Adjustable moving plate; 92. Telescopic cylinder; 93. Docking plate; 94. Rotating rod; 95. Return spring 1; 96. Gear 1; 97. Gear 2; 98. Rotating storage plate; 99. Long push plate; 910. Fixed storage plate; 911. Short push plate; 912. Movable storage plate; 913. Rotating shaft; 914. Return spring 2; 915. Gear 3;

[0070] 10. Auxiliary unloading assembly; 1001. Auxiliary unloading shell; 1002. Auxiliary unloading motor; 1003. Threaded rod 2; 1004. Auxiliary unloading moving plate;

[0071] 11. Loading auxiliary assembly; 1101. Loading auxiliary shell; 1102. Threaded rod three; 1103. Loading auxiliary moving plate; 1104. Loading auxiliary motor. DETAILED DESCRIPTION

[0072] 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 in conjunction with the accompanying drawings.

[0073] Embodiment 1

[0074] like Figure 1-6 As shown, a bend pipe detection device, the bend pipe includes an arc portion and straight pipe portions connected at both ends of the arc portion, and the bend pipe detection device includes:

[0075] The curvature detection component 2 includes a support plate 21, a placement platform and an adjustment limit component. The placement platform is located on the top of the support plate 21. The placement platform has a plurality of fixed plates 22 distributed in a 180° fan shape with the center of the support plate 21 as the center of the circle;

[0076] The adjustment and limiting component includes a plurality of placement plates 29 corresponding to the fixed plate 22 and a driving component. The placement plates 29 are slidably arranged on the corresponding fixed plate 22. A plurality of placement plates 29 are provided with placement grooves 210. The plurality of placement grooves 210 together form an arc channel, which is suitable for placing the arc portion of the bent pipe.

[0077] The driving component is installed on the support plate 21. The driving component is suitable for being connected to a plurality of placement plates 29 respectively so as to drive the plurality of placement plates 29 to move linearly in the radial direction on the corresponding fixed plate 22 synchronously. The synchronous movement of the plurality of placement plates 29 is suitable for changing the positions of the plurality of placement grooves 210, thereby changing the radius of the arc channel.

[0078] The radial direction here refers to the radial direction of a circle with the center of the support plate 21 as the center.

[0079] like Figure 4 As shown, the driving component includes an adjusting motor 23 and a rotating rod 211 corresponding to the fixing plate 22;

[0080] The adjusting motor 23 is installed in the supporting plate 21, and the output shaft of the adjusting motor 23 is coaxially arranged with the center of the supporting plate 21. The rotating rod 211 is rotatably installed at the bottom of the corresponding fixed plate 22. A plurality of rotating rods 211 are all equipped with synchronous wheels. A plurality of synchronous wheels corresponding to the synchronous wheels on the rotating rod 211 are installed on the output shaft of the adjusting motor 23. A synchronous belt 24 is sleeved between the synchronous wheels on the rotating rod 211 and the synchronous wheels on the output shaft of the corresponding adjusting motor 23.

[0081] The synchronous belt 24 is provided with a connecting plate 25 which moves with the synchronous belt 24. The top surface of the connecting plate 25 passes through and extends to the outside of the corresponding fixed plate 22. The fixed plate 22 is provided with a through groove 26. The connecting plate 25 is slidably arranged in the through groove 26. A slider 28 is connected to the part of the connecting plate 25 extending out of the fixed plate 22. A slide rail 27 is provided on the fixed plate 22. The slider 28 is slidably connected to the slide rail 27. A placement plate 29 is connected to the top of the slider 28.

[0082] like Figure 4-6 As shown, the two outermost fixing plates 22 are end fixing plates, and the two end fixing plates are arranged along a straight line. The placing plate 29 on each end fixing plate is provided with two symmetrically arranged placing grooves 210, one of which is suitable for placing the corresponding end of the arc-shaped part of the bent pipe, and the other is suitable for placing the corresponding straight pipe part of the bent pipe.

[0083] like Figure 3 As shown, the bent pipe detection device further includes at least one support frame 3, the support frame 3 is located on one side of the straight side of the placement platform, and the support frame 3 is suitable for supporting the bent pipe.

[0084] In this embodiment, the support frame 3 may be provided with a plurality of rotatable support rollers suitable for supporting the straight pipe portion of the bent pipe.

[0085] The working principle of this embodiment is as follows:

[0086] Before the bend pipe needs to be inspected, the bend detection component 2 is adjusted according to the size of the bend pipe to be inspected, and the adjustment motor 23 is started. A plurality of synchronous belts 24 are provided on the output shaft of the adjustment motor 23 through a synchronous wheel sleeve, and each synchronous belt 24 is connected to a connecting plate 25. The connecting plate 25 moves following the rotation of the synchronous belt 24. The upper end of the connecting plate 25 passes through the fixed plate 22 and is connected to the slider 28 on the fixed plate 22, so that the connecting plate 25 drives the slider 28 to move on the slide rail 27 on the fixed plate 22. A placement plate 29 is provided on the slider 28, and a placement groove 210 is provided on the placement plate 29. The rotation of the output shaft of the adjustment motor 23 drives all the synchronous belts 24 to rotate, thereby realizing each The placement plates 29 corresponding to the synchronous belts 24 move synchronously on the fixed plate 22, and the placement grooves 210 on the placement plates 29 are used to place the bent pipes. Since the fixed plate 22 is arranged in a sector shape with the output shaft of the adjusting motor 23 as the center, the placement grooves 210 on all the placement plates 29 form an arc channel as a whole, and the arc channel is used to place the arc portion of the bent pipe. At the same time, all the placement plates 29 move synchronously on the fixed plate 22, and the radius of the arc channel can be changed, so as to achieve the effect of arbitrary adjustment according to the size of the bent pipe to be tested. It should be noted that the adjusting motor 23 is installed at the center of the support plate 21, so the fixed plate 22 is also fan-shaped with the center of the support plate 21 as the center.

[0087] In addition, the placement plates 29 on the end fixing plates are different from those on the other fixing plates 22. The placement plates 29 on the two end fixing plates are provided with two symmetrically arranged placement grooves 210, one of which is suitable for placing the corresponding end of the curved portion of the bent pipe, and the other is suitable for placing the corresponding straight pipe portion of the bent pipe. This arrangement ensures that the placement grooves 210 not only fix the curved portion of the bent pipe, but also play a certain supporting and detecting role for the two straight pipe portions of the bent pipe, and detect whether the straight pipe portion of the bent pipe is bent while detecting the curvature;

[0088] After the curvature detection component 2 is adjusted, the curved pipe to be detected is placed on the placement plate 29, and the curved pipe is pushed to the placement groove 210 by manual or electrical control. When the curvature of the curved pipe is qualified, it will be stuck in the placement groove 210, otherwise it cannot enter the placement groove 210. The unqualified curved pipes are removed from the curvature detection component 2 by manual or electrical control and then processed uniformly.

[0089] Embodiment 2

[0090] like Figure 1As shown, this embodiment further includes the following structure on the basis of the first embodiment: the bend detection device also includes a hydraulic press 51, the hydraulic press 51 is located on the straight side of the placement platform, the hydraulic press 51 includes a water injection port 52, a water outlet 53, a pressurizing device, a water tank and a pressure gauge installed in the hydraulic press 51, the water injection port 52 and the water outlet 53 are both connected to the water tank, and the water injection port 52 and the water outlet 53 are suitable for being connected to the two ends of the bend respectively.

[0091] like Figure 7 As shown, the detection device also includes a pipe cutter 4, which is located on the straight side of the placement platform. The pipe cutter 4 is provided with two groups of moving components and cutting components corresponding to the moving components. The two cutting components are suitable for cutting two straight pipe sections of the bent pipe respectively, and the moving components are suitable for driving the corresponding cutting components to move;

[0092] The cutting assembly includes a rotating motor 46, a gear box 45 and a cutting disc 47. The rotating motor 46 is connected to the gear box 45, and the gear box 45 is connected to the cutting disc 47. The rotating motor 46 is suitable for driving the gears in the gear box 45 to rotate so as to drive the cutting disc 47 to rotate.

[0093] The moving assembly includes a linear motor 41, a threaded rod 42, a guide rod 43 and a transmission sleeve 44. The linear motor 41 is installed on the pipe cutting machine 4. The threaded rod 42 is rotatably installed in the pipe cutting machine 4. The guide rod 43 is fixedly connected in the pipe cutting machine 4. The transmission sleeve 44 is connected to a gear box 45. The linear motor 41 is connected to the threaded rod 42 to drive the threaded rod 42 to rotate in the pipe cutting machine 4. The transmission sleeve 44 is assembled on the outside of the threaded rod 42. The guide rod 43 passes through the inside of the transmission sleeve 44. The threaded rod 42 is suitable for being driven to rotate to drive the transmission sleeve 44 to move along the axial direction of the threaded rod 42 and slide on the outside of the guide rod 43, thereby driving the cutting disc 47 to move.

[0094] The bend pipe detection device also includes a bottom plate 1, on which a driving motor 412 is installed, a threaded rod 413 is rotatably installed in the bottom plate 1, a guide plate 414 is fixedly connected to the bottom of the support plate 21, and the guide plate 414 is assembled on the outside of the threaded rod 413. The driving motor 412 is connected to the threaded rod 413 to drive the threaded rod 413 to rotate in the bottom plate 1, thereby driving the guide plate 414 to move along the axis direction of the threaded rod 413, and then driving the support plate 21 and all the components thereon to move;

[0095] A limiting assembly is installed on one side of the pipe cutting machine 4, and the limiting assembly includes a connecting shell 48, a limiting motor 49, a bidirectional screw rod 410 and two limiting blocks 411. The connecting shell 48 is connected to one side of the pipe cutting machine 4, the limiting motor 49 is installed on the connecting shell 48, the bidirectional screw rod 410 is rotatably installed in the connecting shell 48, and the two limiting blocks 411 are respectively assembled on two oppositely arranged threads of the bidirectional screw rod 410. A limiting groove is provided on the limiting block 411, and the limiting groove is suitable for placing the straight pipe part of the bent pipe. The limiting motor 49 is connected to the bidirectional screw rod 410 to drive the bidirectional screw rod 410 to rotate in the connecting shell 48, thereby driving the two limiting blocks 411 outside the bidirectional screw rod 410 to move toward or in the opposite direction to change the spacing between the two limiting blocks 411.

[0096] The working principle of this embodiment is as follows:

[0097] After the inspection is qualified, the arc-shaped part and part of the straight pipe of the bent pipe are stuck in the placement groove 210, and the remaining straight pipe part is placed on the support frame 3. At this time, the driving motor 412 is started to drive the threaded rod four 413 to rotate, and the threaded rod four 413 drives the guide plate 414 to move along the axial direction of the threaded rod four 413. The guide plate 414 is connected to the support plate 21, so that the driving motor 412 can drive the entire curvature detection component 2 to move. The threaded rod four 413 and the guide plate 414 can be assembled by a ball nut. Other threaded rods in the detection device and the components that cooperate with the outside of the threaded rod can all be assembled by a ball nut. This part is a prior art and will not be described in detail here.

[0098] When the driving motor 412 drives the entire curvature detection assembly 2 to move, it drives the entire bend pipe to move, and moves the end faces of the two straight pipe sections of the bend pipe to a position close to the hydraulic press 51. The water injection port 52 and the water outlet 53 of the hydraulic press 51 are manually docked with the end faces of the two straight pipe sections of the bend pipe and sealed. The pressurizing device in the hydraulic press 51 pressurizes the water in the water tank and then injects it into the bend pipe and maintains the pressure. The operator determines whether there is a leakage problem in the bend pipe by observing the value of the pressure gauge. The hydraulic press 51 is a prior art and will not be described in detail here.

[0099] After passing the sealing test of the hydraulic press 51, the unqualified bent pipe is taken out from the curvature detection component 2, and the qualified bent pipe is moved again by the driving motor 412. The purpose of the movement at this time is to control the overall length of the bent pipe. First, the two straight pipe sections of the bent pipe are moved to the pipe cutting machine 4. Since the arc-shaped part of the bent pipe is stuck in the placement groove 210, one end of the bent pipe is fixed. By controlling the moving distance, the length of the bent pipe extending into the pipe cutting machine 4 can be accurately controlled, and the excess straight pipe section can be cut by the cutting disk 47 in the pipe cutting machine 4. After the length of the bent pipe extending into the pipe cutting machine 4 is controlled, the rotating motor 46 is started, and the output shaft of the rotating motor 46 drives the gear in the gear box 45 to rotate, and the gear in the gear box 45 drives the cutting disk 47 to rotate. 7 rotates, and then the linear motor 41 is started. The linear motor 41 drives the threaded rod 42 to rotate, thereby driving the transmission sleeve 44 assembled on the outside of the threaded rod 42 to move. The transmission sleeve 44 also moves outside the guide rod 43. The guide rod 43 prevents the transmission sleeve 44 from rotating under the drive of the threaded rod 42. The transmission sleeve 44 is connected to the gear box 45, so the transmission sleeve 44 can drive the cutting disc 47 to do linear motion. The rotating cutting disc 47 moves horizontally under the drive of the linear motor 41 to cut the bent pipe. It should be noted that the pipe cutting machine 4 is provided with two separately controlled cutting discs 47, and their driving modes are exactly the same. They can respectively cut the straight pipe parts of the corresponding bent pipes, thereby improving work efficiency.

[0100] In addition, a limit assembly is also provided on the pipe cutting machine 4, and the limit assembly is two limit blocks 411, and a limit groove is provided on the limit block 411. The two straight pipe sections of the bent pipe pass through the inside of the limit block 411, and the position of the limit block 411 is close to the cutting disc 47. Therefore, the straight pipe section of the bent pipe is placed in the limit groove, which can avoid shaking during the pipe cutting process due to the straight pipe section of the bent pipe being too long, thereby affecting the cutting effect, and the distance between the two limit blocks 411 can be adjusted to adapt to bent pipes of various sizes. When adjustment is required, the two-way screw rod 410 is rotated, and the two limit blocks 411 are respectively installed on the two opposite threads of the two-way screw rod 410. When the two-way screw rod 410 rotates, it drives the two limit blocks 411 to move toward or in the opposite direction. The working principle of the two-way screw rod is the existing technology, and its working principle is not described in detail here.

[0101] After cutting, the bent pipe meets the requirements in terms of total length, sealing and curvature, and can be unloaded manually or electronically.

[0102] Embodiment 3

[0103] like Figure 8 , Fig.11 , Fig.13As shown, this embodiment further includes the following structure on the basis of the first embodiment: a loading assembly 6 and a lowering assembly 7 are respectively provided on both sides of the curvature detection device, the loading assembly 6 includes a loading plate 61, and the lowering assembly 7 includes a lowering plate 71;

[0104] A loading and unloading control assembly 8 is respectively installed on one side of the straight side of the placing platform and on the side of the supporting frame 3 close to the placing platform. The two loading and unloading control assemblies 8 both include a shell 81, on which a control motor 82 is installed. A bidirectional screw rod 1 83 is rotatably installed in the shell 81, and two oppositely arranged threads on the bidirectional screw rod 1 83 are respectively equipped with an auxiliary component 1 and an auxiliary component 2. The auxiliary component 1 is located in the direction of one side of the unloading plate 71, and the auxiliary component 2 is located in the direction of one side of the loading plate 61. The control motor 82 is connected to the bidirectional screw rod 1 83 to be suitable for driving the bidirectional screw rod 1 83 to rotate in the shell 81, thereby driving the auxiliary component 1 and the auxiliary component 2 to move toward or in the opposite direction along the axial direction of the threaded rod 1 42 to change the distance between the auxiliary component 1 and the auxiliary component 2;

[0105] The auxiliary component 1 and the auxiliary component 2 both include an adjustment movable plate 91 mounted on the outside of the bidirectional screw rod 1 83, a telescopic cylinder 92 mounted on the adjustment movable plate 91, and a docking plate 93 mounted on the movable end of the telescopic cylinder 92. A storage component is provided on the docking plate 93, and the storage component is suitable for placing the straight pipe part of the bent pipe;

[0106] The bottom of the shell 81 is provided with a material unloading auxiliary component 10, which includes a material unloading auxiliary shell 1001, a material unloading auxiliary motor 1002, a second threaded rod 1003 and a material unloading auxiliary moving plate 1004. The material unloading auxiliary motor 1002 is installed on the material unloading auxiliary shell 1001, the second threaded rod 1003 is rotatably installed in the material unloading auxiliary shell 1001, the material unloading auxiliary moving plate 1004 is connected to the bottom of the shell 81, and the material unloading auxiliary moving plate 1004 is assembled on the outside of the second thread. The material unloading auxiliary motor 1002 is connected to the second thread so as to drive the second threaded rod 1003 to rotate in the material unloading auxiliary shell 1001, thereby driving the material unloading auxiliary moving plate 1004 to move along the axial direction of the second threaded rod 1003, thereby driving the shell 81 and all components thereon to move;

[0107] A loading auxiliary component 11 is arranged at the bottom of the unloading auxiliary component 10, and the loading auxiliary component 11 includes a loading auxiliary shell 1101, a loading auxiliary motor 1104, a threaded rod three 1102 and a loading auxiliary moving plate 1103. The loading auxiliary motor 1104 is installed on the loading auxiliary shell 1101, the threaded rod three 1102 is rotatably installed in the loading auxiliary shell 1101, the loading auxiliary moving plate 1103 is assembled on the outside of the threaded rod three 1102, the loading auxiliary moving plate 1103 is connected to the unloading auxiliary shell 1001, and the loading auxiliary motor 1104 is connected to the threaded rod three 1102 so as to be suitable for driving the threaded rod three 1102 to rotate in the loading auxiliary shell 1101, thereby driving the loading auxiliary moving plate 1103 to move along the axial direction of the threaded rod three 1102, thereby driving the unloading auxiliary shell 1001 and all components thereon to move.

[0108] like Figure 9-10 As shown, the auxiliary component 1 also includes two rotating rods 94, a return spring 1 95 corresponding to the rotating rods 94, a gear 1 96 and a gear 2 97 respectively fixedly mounted on the two rotating rods 94, and a rotating receiving plate 98 respectively fixedly mounted on the two rotating rods 94, and the gear 1 96 and the gear 2 97 are meshed;

[0109] A rotating cavity 1 is provided on the docking plate 93 corresponding to the auxiliary component 1, and two rotating rods 94 are both rotatably installed in the rotating cavity 1, one end of the two rotating rods 94 extends to the outside of the docking plate 93, and two return springs 1 95 are respectively sleeved on the outside of the extended part of the corresponding rotating rod 94, one end of the return spring 1 95 is connected to the rotating rod 94, and the other end of the return spring 1 95 is connected to the docking plate 93, and grooves are provided on the two rotating receiving plates 98, and the grooves are suitable for placing the straight pipe part of the elbow;

[0110] The auxiliary component 2 also includes a rotating shaft 913, a movable receiving plate 912 fixedly sleeved on the rotating shaft 913, a gear 3 915 fixedly sleeved on the rotating shaft 913, a return spring 2 914 and a fixed receiving plate 910;

[0111] A second rotating cavity is provided on the docking plate 93 corresponding to the second auxiliary component, a rotating shaft 913 is rotatably installed in the second rotating cavity, one end of the rotating shaft 913 extends to the outside of the docking plate 93, a second reset spring 914 is sleeved on the outside of the extended portion of the rotating shaft 913, one end of the second reset spring 914 is connected to the rotating shaft 913, and the other end of the second reset spring 914 is connected to the docking plate 93, a fixed receiving plate 910 is fixedly connected to the second rotating cavity, and a groove is provided on the fixed receiving plate 910 and the movable receiving plate 912, and the groove is suitable for placing the straight pipe part of the elbow;

[0112] The blanking assembly 7 further includes a blanking protection plate 72, which is located below the blanking plate 71. There is a gap between the blanking protection plate 72 and the blanking plate 71. When the housing 81 moves toward the blanking plate 71, it passes through the gap, and the housing 81 slides on the blanking protection plate 72.

[0113] Matching grooves 73 are provided on the blanking plate 71 at positions corresponding to the rotating storage plate 98, the movable storage plate 912 and the fixed storage plate 910. A rack 75 corresponding to the matching groove 73 is provided at the bottom of the blanking plate 71. The rack 75 is meshed with gear two 97 and gear three 915. Gear two 97 is suitable for being driven by the rack 75 to rotate when it moves to the matching groove 73, thereby driving gear one 96 to rotate, thereby driving the two rotating storage plates 98 to rotate in the same direction or in the opposite direction. Gear three 915 is suitable for being driven by the rack 75 to rotate when it moves to the matching groove 73, thereby driving the movable storage plate 912 to rotate. An inclined surface 74 is provided on one side of the blanking plate 71 where the matching groove 73 is provided.

[0114] like Figure 11-14 As shown, the loading assembly 6 also includes a loading protection plate 62, which is located below the loading plate 61. There is a gap between the loading protection plate 62 and the unloading plate 71. When the unloading auxiliary shell 1001 moves toward the upper material plate 61, it passes through the gap, and the unloading auxiliary shell 1001 slides on the loading protection plate 62;

[0115] The loading plate 61 is hollow, and an adjusting plate 1 63 is fixedly arranged inside the loading plate 61, and a straight groove 65 is formed between the adjusting plate 1 63 and the inner wall of the long side of the loading plate 61. An adjusting plate 2 66 is fixedly arranged inside the loading plate 61, and another straight groove 65 is formed between the adjusting plate 1 63 and the adjusting plate 2 66. A curved groove 64 is formed between one short side of the loading plate 61 and the adjusting plate 1 63 and the adjusting plate 2 66, and the curved groove 64 is communicated with the two straight grooves 65.

[0116] A contraction groove is provided on one side of the straight groove 65 on the adjustment plate 1 63 and the adjustment plate 2 66. The position of the contraction groove is opposite to the auxiliary component 1 and the auxiliary component 2. A telescopic rod 68 is connected in the contraction groove. A contraction spring 69 is sleeved on the outside of the telescopic rod 68. A baffle 67 is connected to the movable end of the telescopic rod 68. The baffle 67 is slidably connected in the contraction groove. One end of the contraction spring 69 is connected to the inner wall of the contraction groove. The other end of the contraction spring 69 is connected to the baffle 67. The baffle 67 is suitable for closing the corresponding straight groove 65. The straight pipe part of the elbow is placed on the baffle 67.

[0117] A short pull plate 610 is connected to the bottom of the baffle plate 67 close to the curvature detection component 2, a long pull plate 611 is connected to the bottom of the baffle plate 67 away from the curvature detection component 2, a long push plate 99 is connected to the side of the rotating storage plate 98 opposite to the gear 2 97, the long push plate 99 is opposite to the short pull plate 610, and a short push plate 911 is connected to the side of the rotating storage plate 98 opposite to the gear 3 915, the short push plate 911 is opposite to the long pull plate 611;

[0118] When auxiliary component one and auxiliary component two are driven to move toward the upper material plate 61, the short push plate 911 squeezes the long pull plate 611, and the long push plate 99 squeezes the short pull plate 610. The short pull plate 610 and the long pull plate 611 respectively drive the corresponding baffle plates 67 to move in the contraction groove to open the corresponding straight groove 65, so that the two straight pipe sections of the bent pipe respectively enter the grooves on the two rotating receiving plates 98 and the grooves on the movable receiving plate 912 and the fixed receiving plate 910.

[0119] The working principle of this embodiment is as follows:

[0120] In order to reduce the manual work of loading and unloading during the whole detection process, a loading and unloading control component 8 is provided on both the curvature detection component 2 and the support frame 3. It should be noted that since multiple support frames 3 are provided, one or more of them can be selected to install the loading and unloading control component 8. The selection is made according to the actual situation, and it can be ensured that the loading and unloading control component 8 can effectively support the entire curved pipe;

[0121] The loading and unloading control assembly 8 first needs to be adjusted according to the size of the bent pipe. When adjusting, the control motor 82 is started, and the control motor 82 drives the bidirectional screw 83 in the housing 81 to rotate. When the bidirectional screw 83 rotates, it drives the auxiliary components 1 and 2 assembled on the outside to move in the same or opposite directions. The auxiliary components 1 and 2 support the two straight pipe sections of the bent pipe.

[0122] After adjustment, a curved pipe to be tested is placed in the loading plate 61 manually or by a conveying device. A curved groove 64, an adjusting plate 1 63 and an adjusting plate 2 66 are provided in the loading plate 61. Two straight grooves 65 are formed by the adjusting plates 1 63 and 66. The curved groove 64 corresponds to the arc-shaped part of the curved pipe, and the straight groove 65 corresponds to the straight pipe part of the curved pipe. The two straight grooves are each blocked by a slidable baffle 67. The number of baffles 67 needs to be corresponding to the number of loading and unloading control components 8. One loading and unloading control component 8 corresponds to two baffles 67. The function of the baffle 67 is to support the curved pipe to be tested to prevent the curved pipe from falling from the two straight grooves 65 in advance. When loading is required, start The feeding auxiliary motor 1104 is driven, and the feeding auxiliary motor 1104 drives the threaded rod three 1102 to rotate. When the threaded rod three 1102 rotates, it drives the feeding auxiliary moving plate 1103 assembled on the outside to move. The feeding auxiliary moving plate 1103 drives the entire shell 81 and the unloading auxiliary shell 1001 to move, thereby driving the auxiliary component one and the auxiliary component two to move to the bottom of the feeding plate 61. A short pull plate 610 is provided on the baffle 67 close to the curvature detection component 2, and a long pull plate 611 is provided on the other baffle 67, which respectively correspond to the long push plate 99 in the auxiliary component one and the short push plate 911 in the auxiliary component two. When the auxiliary component one and the auxiliary component two move, the short push plate 911 does not contact the short pull plate 610 until the short push plate 911 moves to the position close to the long pull plate 611. When the short push plate 911 pushes the long pull plate 611, the long push plate 99 of the auxiliary component 1 also pushes the short pull plate 610, so that the auxiliary component 1 and the auxiliary component 2 drive the two baffles 67 to move at the same time. When the baffles 67 move, they squeeze the corresponding telescopic rods 68 and the contraction springs 69 until the straight groove 65 initially blocked by the baffles 67 is fully opened. After the straight groove 65 is opened, the bent pipe loses the restriction of the baffle 67 and falls on the auxiliary component 1 and the auxiliary component 2. Two rotating receiving plates 98 are arranged on the auxiliary component 1, and a section of the straight pipe of the bent pipe falls into the grooves on the two rotating receiving plates 98. A movable receiving plate 912 and a fixed receiving plate 910 are arranged on the auxiliary component 2. The other straight section of the bent pipe falls into the grooves on the movable receiving plate 912 and the fixed receiving plate 910. At this time, the auxiliary component 1 and the auxiliary component 2 completely catch the entire bent pipe and are reset by the feeding auxiliary motor 1104. After the reset, the two baffles 67 are reset by their corresponding telescopic rods 68 and contraction springs 69, and the straight groove part is blocked to place the next bent pipe to be tested. During the reset process of the auxiliary component 1 and the auxiliary component 2, the entire bent pipe is lifted by the telescopic cylinder 92 connected to each other, and after lifting, the entire bent pipe is moved to the placement plate 29, and then lowered by the telescopic cylinder 92. After the auxiliary component 1 and the auxiliary component 2 are lowered, the arc part of the bent pipe is placed on the placement plate 29, and the straight pipe part is placed on the support frame 3.At this time, it is judged whether the bent pipe can enter the placement groove 210 according to the pushing of the bent pipe. If it can enter the placement groove 210, the curvature is qualified, and if it cannot enter, the curvature is unqualified. It should be noted that when the unloading auxiliary shell 1001 moves to the bottom of the loading plate 61, the loading protection plate 62 under the unloading plate 71 can support the unloading auxiliary shell 1001. In addition, since the auxiliary components one and two need to be adjusted according to the size of the bent pipe, the distance between the two corresponding baffles located on the adjustment plate 63 and the adjustment plate 66 also needs to be adjusted. The distance adjustment between the two baffles can be achieved by replacing the adjustment plate 1 63 and the adjustment plate 2 66 of different sizes;

[0123] Regardless of whether the curvature test of the bent pipe is qualified or not, automatic unloading processing is required after the test is completed. During automatic unloading, the auxiliary components one and two are first lifted up again by the telescopic cylinder 92 to support the bent pipe. For the qualified bent pipe, the bent pipe is taken out from the placement groove 210 by lifting and supported. After support, the unloading auxiliary motor 1002 is started, and the unloading auxiliary motor 1002 drives the threaded rod 2 1003 to rotate. When the threaded rod 2 1003 rotates, it drives the unloading auxiliary moving plate 1004 assembled on the outside to move horizontally. The unloading auxiliary moving plate 1004 drives the entire shell 81 and the auxiliary components one and two to move to the bottom of the unloading plate 71. During the movement, the auxiliary component one and the bottom of the unloading plate 71 are moved horizontally. The rack 75 contacts first, and a matching groove 73 and a rack 75 are provided on the unloading plate 71. The number of matching grooves 73 and racks 75 corresponds to each loading and unloading control assembly 8. Each loading and unloading control assembly 8 needs to match a matching groove 73 and a rack 75. When the auxiliary component moves to the matching groove 73, gear 2 97 meshes with the rack 75 and rotates. After gear 2 97 rotates, it drives gear 1 96 to rotate. Gear 1 96 and gear 2 97 rotate in opposite directions, thereby realizing the reverse rotation of the two rotating storage plates 98. The matching groove 73 and the rotating cavity 1 provided on the docking plate 93 for installing the two rotating storage grooves are both for providing space for the two rotating storage plates 98 to rotate. After the two rotating storage plates 98 rotate in opposite directions, the two rotating storage plates 98 are originally rotated by two rotating storage plates. One end of the straight tube of the curved tube supported by the receiving plate 98 loses support. At this time, the straight tube part that loses support falls directly onto the blanking plate 71. Under the thrust of the continuously moving auxiliary component 2, the straight tube end continues to move on the blanking plate 71. At the same time, the auxiliary component 1 also continues to move. The gear 2 97 loses engagement with the rack 75. Since the two rotating receiving plates 98 are located at the bottom of the blanking plate 71 as a whole after being rotated and opened, they are restricted by the bottom surface of the blanking plate 71 and the two opened rotating receiving plates 98 cannot be reset temporarily. During the continuous movement of the auxiliary component 1, the auxiliary component 2 is also moving until the gear 3 915 moved to the auxiliary component 2 is meshed with the rack 75, and the movable receiving plate 91 corresponding to the gear 3 915 is driven by the meshing method. 2, the fixed receiving plate 910 rotates in the opposite direction away from the fixed receiving plate 910. The straight tube at the other end of the original bent tube is supported by the cooperation of the movable receiving plate 912 and the fixed receiving plate 910. Now the straight tube component has lost its supporting force due to the rotation of the movable receiving plate 912. Therefore, under the continuous movement of the fixed receiving plate 910, it is pushed to the unloading plate 71 along the inclined surface 74. At this time, as the two straight tube sections of the bent tube are all moved to the unloading plate 71, the entire bent tube is also located on the unloading plate 71, completing automatic unloading. It should be noted that the opening time of the two rotating receiving plates 98 can also be before entering the matching groove 73. In this way, the position of the rack 75 is changed, and the rack 75 is extended to the outside of the unloading plate 71 on the side close to the curvature detection component 2.Thus, the rack 75 is achieved before the auxiliary component 1 enters the matching groove 73, so that the gear 2 97 in the auxiliary component 1 meshes with the rack 75 and drives the two rotating receiving plates 98 to open. At this time, after the bent pipe loses its restriction, because the auxiliary component 1 has not moved into the matching groove 73, the bent pipe will not fall directly onto the blanking plate 71, but will fall onto the inclined surface 74. The thrust generated by the auxiliary component 2 then moves the straight pipe at this end along the inclined surface 74 to the blanking plate 71. The blanking of the other straight pipe at the other end controlled by the auxiliary component 2 is the same as the above method.

[0124] After the automatic unloading is completed, the unloading auxiliary motor 1002 reverses to drive the auxiliary components 1 and 2 to reset. During the reset, the gear 3 915 meshes with the rack 75 again, but the rotation direction is opposite to the previous direction, so as to realize the reset of the movable storage plate 912. At the same time, the reset spring 2 914 can also be used to reset the movable storage plate 912. Each rotation of the movable storage plate 912 will twist the reset spring 2 914. When the movable storage plate 912 is located at the bottom of the unloading plate 71, it is restricted by the bottom surface of the unloading plate 71 and cannot be reset temporarily. However, when the movable storage plate 912 loses the restriction of the unloading plate 71, the reset spring 2 914 can drive the movable storage plate 912 to reset through the characteristics of its own spring material. The storage plate 912 is reset, and as the movement continues, the gear 2 97 in the auxiliary component 1 meshes with the rack 75 again, and cooperates with the setting of the gear 1 96 to realize the reset of the two rotating storage plates 98. Similarly, a reset spring 1 95 is provided on the rotating rod 94 corresponding to the gear 1 96 and the gear 2 97. The two rotating storage plates 98 can also be reset by the reset spring 1 95, which is the same as the reset spring 2 914 mentioned above. At this point, the auxiliary component 1 and the auxiliary component 2 are all reset, waiting for the next unloading work. It should be noted that when the shell 81 moves as a whole to the bottom of the unloading plate 71, the unloading protection plate 72 located under the unloading plate 71 can support the shell 81.

[0125] The present invention also provides a method for detecting a bent pipe, comprising the following steps:

[0126] S1. First, place the bent pipe to be tested on the loading plate 61. The bent part of the bent pipe is located at the bent groove 64. The straight pipes at both ends of the bent pipe are located at the two straight grooves 65. The straight grooves 65 are closed by baffles 67. The straight pipe part of the bent pipe is placed on the baffles 67. The auxiliary components 1 and 2 are moved to the bottom of the loading plate 61, and the baffles 67 are driven to move to open the straight grooves 65. The bent pipe falls from the straight grooves 65 to the auxiliary components 1 and 2.

[0127] S2. According to the specified size of the bend of the pipe to be detected, the regulating motor 23 is started to drive the plurality of placement plates 29 to move synchronously, thereby adjusting the positions of the plurality of placement slots 210 to change the size of the arc-shaped channel formed by the plurality of placement slots 210, and the auxiliary components 1 and 2 are moved and reset to the bend detection component 2 and the pipe is placed on the plurality of placement plates 29, and the pipe is pushed to detect the bend according to whether it can enter the annular channel;

[0128] S3, the elbow with qualified curvature is stuck in the arc channel, the driving motor 412 is started to drive the entire curvature detection assembly 2 to move, the end face of the straight pipe part of the elbow is moved to the position of the hydraulic press 51, the water injection port 52 and the water outlet 53 of the hydraulic press 51 are respectively connected to the two ends of the elbow, and the sealing of the elbow is judged by the value displayed on the pressure gauge after water injection;

[0129] S4, if the curvature and sealing of the bent pipe are both qualified, continue to start the driving motor 412 to move until the distance between the end of the arc-shaped part of the bent pipe and the cutting disc 47 of the pipe cutter 4 is the required total length of the bent pipe, then start the pipe cutter 4 to drive the cutting disc 47 to rotate and move, and cut the two straight sections of the bent pipe;

[0130] S5. After cutting is completed, the curvature detection component 2 is reset, and the telescopic cylinder 92 in the auxiliary component one and the auxiliary component two is started to lift the bent pipe from the placement groove 210 and move it to the lower material plate 71. During the movement, gear two 97 and gear three 915 are respectively engaged with the rack 75, thereby driving the two rotating storage plates 98 to rotate in the opposite direction and the movable storage plate 912 to rotate away from the fixed storage plate 910, thereby losing the restriction on the bent pipe. During the movement, the bent pipe is pushed onto the lower material plate 71 through the fixed storage plate 910.

[0131] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bend pipe detection device, characterized in that: The bent pipe includes an arc portion and straight pipe portions connected at both ends of the arc portion. The bent pipe detection device includes: A curvature detection component (2), the curvature detection component (2) comprising a support plate (21), a placement platform and an adjustment limit component, the placement platform is located on the top of the support plate (21), the placement platform is semicircular as a whole, and the placement platform has a plurality of fixed plates (22) distributed in a 180° sector shape with the center of the support plate (21) as the center of the circle; The regulating and limiting component comprises a plurality of placement plates (29) corresponding to the fixing plates (22) and a driving component, wherein the placement plates (29) are slidably arranged on the corresponding fixing plates (22), and a plurality of placement plates (29) are provided with placement grooves (210), and the plurality of placement grooves (210) together form an arc-shaped channel, and the arc-shaped channel is suitable for placing the arc-shaped portion of the bent pipe; The driving component is installed on the supporting plate (21), and the driving component is suitable for being respectively connected to a plurality of the placing plates (29) so as to drive the plurality of the placing plates (29) to synchronously move linearly along the radial direction on the corresponding fixing plate (22). The synchronous movement of the plurality of the placing plates (29) is suitable for changing the positions of the plurality of the placing grooves (210), thereby changing the radius of the arc-shaped channel.

2. The bend pipe detection device according to claim 1, characterized in that: The driving component comprises an adjusting motor (23) and a rotating rod (211) corresponding to the fixing plate (22); The adjusting motor (23) is installed in the supporting plate (21), the output shaft of the adjusting motor (23) is coaxially arranged with the center of the supporting plate (21), the rotating rod (211) is rotatably installed at the bottom of the corresponding fixing plate (22), a plurality of the rotating rods (211) are each equipped with a synchronous wheel, a plurality of synchronous wheels corresponding to the synchronous wheels on the rotating rod (211) are installed on the output shaft of the adjusting motor (23), and a synchronous belt (24) is sleeved between the synchronous wheel on the rotating rod (211) and the synchronous wheel on the output shaft of the corresponding adjusting motor (23); The synchronous belt (24) is provided with a connecting plate (25) which moves following the synchronous belt (24); the top surface of the connecting plate (25) passes through and extends to the outside of the corresponding fixed plate (22); the fixed plate (22) is provided with a through groove (26); the connecting plate (25) is slidably arranged in the through groove (26); a slider (28) is connected to the portion of the connecting plate (25) extending out of the fixed plate (22); a slide rail (27) is provided on the fixed plate (22); the slider (28) is slidably connected to the slide rail (27); and the placement plate (29) is connected to the top of the slider (28).

3. The bend pipe detection device according to claim 2, characterized in that: The two fixing plates (22) at the outermost edges are end fixing plates, and the two end fixing plates are arranged along a straight line. The placing plate (29) on each end fixing plate is provided with two symmetrically arranged placing grooves (210), one of the placing grooves (210) is suitable for placing the corresponding end of the curved part of the bent pipe, and the other placing groove (210) is suitable for placing the corresponding straight pipe part of the bent pipe.

4. The bend pipe detection device according to claim 3, characterized in that: The bent pipe detection device further comprises at least one support frame (3), wherein the support frame (3) is located on one side of the straight edge of the placement platform, and the support frame (3) is suitable for supporting the bent pipe.

5. The bend pipe detection device according to claim 4, characterized in that: The bent pipe detection device also includes a hydraulic press (51), the hydraulic press (51) is located on one side of the straight edge of the placement platform, the hydraulic press (51) includes a water injection port (52), a water outlet (53), a pressurizing device, a water tank and a pressure gauge installed in the hydraulic press (51), the water injection port (52) and the water outlet (53) are both connected to the water tank, and the water injection port (52) and the water outlet (53) are suitable for being connected to two ends of the bent pipe respectively.

6. The bend pipe detection device according to claim 5, characterized in that: The pipe bending detection device further comprises a pipe cutting machine (4), the pipe cutting machine (4) being located on one side of the straight side of the placing platform, the pipe cutting machine (4) being provided with two groups of moving components and cutting components corresponding to the moving components, the two cutting components being suitable for cutting two straight pipe sections of the bent pipe respectively, and the moving components being suitable for driving the corresponding cutting components to move; The cutting assembly comprises a rotating motor (46), a gear box (45) and a cutting disc (47), wherein the rotating motor (46) is connected to the gear box (45), the gear box (45) is connected to the cutting disc (47), and the rotating motor (46) is suitable for driving the gears in the gear box (45) to rotate so as to drive the cutting disc (47) to rotate; The moving assembly comprises a linear motor (41), a threaded rod (42), a guide rod (43) and a transmission sleeve (44); the linear motor (41) is mounted on the pipe cutting machine (4); the threaded rod (42) is rotatably mounted in the pipe cutting machine (4); the guide rod (43) is fixedly connected in the pipe cutting machine (4); the transmission sleeve (44) is connected to the gear box (45); the linear motor (41) is connected to the threaded rod (42) so as to drive the threaded rod (42) to rotate in the pipe cutting machine (4); the transmission sleeve (44) is mounted on the outside of the threaded rod (42); the guide rod (43) passes through the inside of the transmission sleeve (44); the threaded rod (42) is suitable for being driven to rotate so as to drive the transmission sleeve (44) to move along the axial direction of the threaded rod (42) and slide on the outside of the guide rod (43), thereby driving the cutting disc (47) to move; The detection device also includes a base plate (1), a driving motor (412) is installed on the base plate (1), a threaded rod (413) is rotatably installed in the base plate (1), a guide plate (414) is fixedly connected to the bottom of the support plate (21), and the guide plate (414) is assembled on the outside of the threaded rod (413), and the driving motor (412) is connected to the threaded rod (413) so as to drive the threaded rod (413) to rotate in the base plate (1), thereby driving the guide plate (414) to move along the axial direction of the threaded rod (413), thereby driving the support plate (21) and all components thereon to move; A limit assembly is installed on one side of the pipe cutting machine (4), and the limit assembly includes a connecting shell (48), a limit motor (49), a bidirectional screw rod (410) and two limit blocks (411). The connecting shell (48) is connected to one side of the pipe cutting machine (4), the limit motor (49) is installed on the connecting shell (48), the bidirectional screw rod (410) is rotatably installed in the connecting shell (48), and the two limit blocks (411) are respectively assembled on the bidirectional screw rod (410). On the two oppositely arranged threads of the two-way screw rod (410), a limiting groove is provided on the limiting block (411), and the limiting groove is suitable for placing the straight pipe part of the bent pipe. The limiting motor (49) is connected to the bidirectional screw rod 2 (410) to drive the bidirectional screw rod 2 (410) to rotate in the connecting shell (48), thereby driving the two limiting blocks (411) outside the bidirectional screw rod 2 (410) to move towards or in the opposite direction to change the distance between the two limiting blocks (411).

7. The bend pipe detection device according to claim 6, characterized in that: A loading assembly (6) and a unloading assembly (7) are respectively arranged on both sides of the curvature detection device, the loading assembly (6) comprises a loading plate (61), and the unloading assembly (7) comprises a unloading plate (71); A loading and unloading control assembly (8) is respectively installed on one side of the straight edge of the placing platform and on the side of the supporting frame (3) close to the placing platform, and the two loading and unloading control assemblies (8) both include a shell (81), on which a control motor (82) is installed, and a bidirectional screw rod (83) is rotatably installed in the shell (81), and two oppositely arranged threads on the bidirectional screw rod (83) are respectively equipped with an auxiliary component (1) and an auxiliary component (2), wherein the auxiliary component (1) is located in the direction of one side of the unloading plate (71), and the auxiliary component (2) is located in the direction of one side of the loading plate (61), and the control motor (82) is connected to the bidirectional screw rod (83) so as to be suitable for driving the bidirectional screw rod (83) to rotate in the shell (81), thereby driving the auxiliary component (1) and the auxiliary component (2) to move toward or in the opposite direction along the axial direction of the threaded rod (42) to change the spacing between the auxiliary component (1) and the auxiliary component (2); The auxiliary component 1 and the auxiliary component 2 both include an adjusting movable plate (91) mounted on the outside of the bidirectional screw rod 1 (83), a telescopic cylinder (92) mounted on the adjusting movable plate (91), and a docking plate (93) mounted on the movable end of the telescopic cylinder (92), wherein a receiving component is provided on the docking plate (93), and the receiving component is suitable for accommodating the straight pipe portion of the bent pipe; A material unloading auxiliary component (10) is disposed at the bottom of the housing (81), and the material unloading auxiliary component (10) comprises a material unloading auxiliary housing (1001), a material unloading auxiliary motor (1002), a second threaded rod (1003), and a material unloading auxiliary movable plate (1004). The material unloading auxiliary motor (1002) is mounted on the material unloading auxiliary housing (1001), the second threaded rod (1003) is rotatably mounted in the material unloading auxiliary housing (1001), and the material unloading auxiliary movable plate (1004) is The auxiliary material removal plate (1004) is connected to the bottom of the housing (81), the auxiliary material removal plate (1004) is mounted on the outside of the second thread, and the auxiliary material removal motor (1002) is connected to the second thread to drive the second threaded rod (1003) to rotate in the auxiliary material removal shell (1001), thereby driving the auxiliary material removal plate (1004) to move along the axial direction of the second threaded rod (1003), thereby driving the housing (81) and all the components thereon to move; A loading auxiliary component (11) is arranged at the bottom of the unloading auxiliary component (10), and the loading auxiliary component (11) comprises a loading auxiliary shell (1101), a loading auxiliary motor (1104), a threaded rod three (1102) and a loading auxiliary moving plate (1103), wherein the loading auxiliary motor (1104) is mounted on the loading auxiliary shell (1101), the threaded rod three (1102) is rotatably mounted in the loading auxiliary shell (1101), and the loading auxiliary moving plate (1103) is assembled on the loading auxiliary shell (1101). The outside of the threaded rod three (1102), the loading auxiliary moving plate (1103) is connected to the unloading auxiliary shell (1001), and the loading auxiliary motor (1104) is connected to the threaded rod three (1102) to be suitable for driving the threaded rod three (1102) to rotate in the loading auxiliary shell (1101), thereby driving the loading auxiliary moving plate (1103) to move along the axial direction of the threaded rod three (1102), thereby driving the unloading auxiliary shell (1001) and all components thereon to move.

8. The bend pipe detection device according to claim 7, characterized in that: The auxiliary component 1 also includes two rotating rods (94), a return spring 1 (95) corresponding to the rotating rods (94), a gear 1 (96) and a gear 2 (97) respectively fixedly mounted on the two rotating rods (94), and a rotating storage plate (98) respectively fixedly mounted on the two rotating rods (94), wherein the gear 1 (96) and the gear 2 (97) are meshed with each other; A rotation cavity 1 is provided on the docking plate (93) corresponding to the auxiliary component 1, and the two rotating rods (94) are both rotatably installed in the rotation cavity 1, one end of the two rotating rods (94) extends to the outside of the docking plate (93), and the two return springs 1 (95) are respectively sleeved on the outside of the extended part of the corresponding rotating rods (94), one end of the return spring 1 (95) is connected to the rotating rod (94), and the other end of the return spring 1 (95) is connected to the docking plate (93), and the two rotating receiving plates (98) are both provided with grooves, and the grooves are suitable for accommodating the straight pipe part of the bent pipe; The auxiliary component 2 also includes a rotating shaft (913), a movable receiving plate (912) fixedly sleeved on the rotating shaft (913), a gear 3 (915) fixedly sleeved on the rotating shaft (913), a return spring 2 (914) and a fixed receiving plate (910); A second rotating cavity is provided on the docking plate (93) corresponding to the second auxiliary component, the rotating shaft (913) is rotatably installed in the second rotating cavity, one end of the rotating shaft (913) extends to the outside of the docking plate (93), the second reset spring (914) is sleeved on the outside of the extended part of the rotating shaft (913), one end of the second reset spring (914) is connected to the rotating shaft (913), and the other end of the second reset spring (914) is connected to the docking plate (93), the fixed receiving plate (910) is fixedly connected to the second rotating cavity, and the fixed receiving plate (910) and the movable receiving plate (912) are both provided with grooves, and the grooves are suitable for accommodating the straight pipe part of the bent pipe; The material removal assembly (7) further comprises a material removal protection plate (72), wherein the material removal protection plate (72) is located below the material removal plate (71), and there is a gap between the material removal protection plate (72) and the material removal plate (71), and the housing (81) passes through the gap when moving toward the material removal plate (71), and the housing (81) slides on the material removal protection plate (72); A matching groove (73) is provided on the blanking plate (71) at a position corresponding to the rotating storage plate (98), the movable storage plate (912) and the fixed storage plate (910); a rack (75) corresponding to the matching groove (73) is provided at the bottom of the blanking plate (71); the rack (75) is meshed with the gear 2 (97) and the gear 3 (915); the gear 2 (97) is adapted to be driven to rotate by the rack (75) when it moves to the matching groove (73), thereby driving the gear 1 (96) to rotate, thereby driving the two rotating storage plates (98) to rotate in the same direction or in the opposite direction; the gear 3 (915) is adapted to be driven to rotate by the rack (75) when it moves to the matching groove (73), thereby driving the movable storage plate (912) to rotate; and an inclined surface (74) is provided on one side of the blanking plate (71) where the matching groove (73) is provided.

9. The bend pipe detection device according to claim 8, characterized in that: The loading assembly (6) further comprises a loading protection plate (62), wherein the loading protection plate (62) is located below the loading plate (61), and there is a gap between the loading protection plate (62) and the unloading plate (71), and the unloading auxiliary shell (1001) passes through the gap when moving toward the loading plate (61), and the unloading auxiliary shell (1001) slides on the loading protection plate (62); The loading plate (61) is hollow, and an adjusting plate 1 (63) is fixedly arranged inside the loading plate (61), and a straight groove (65) is formed between the adjusting plate 1 (63) and the inner wall of the long side of the loading plate (61); an adjusting plate 2 (66) is fixedly arranged inside the loading plate (61), and another straight groove (65) is formed between the adjusting plate 1 (63) and the adjusting plate 2 (66); a curved groove (64) is formed between one short side of the loading plate (61) and the adjusting plate 1 (63) and the adjusting plate 2 (66), and the curved groove (64) is communicated with the two straight grooves (65); The adjustment plate 1 (63) and the adjustment plate 2 (66) are both provided with a contraction groove on one side of the straight groove (65), and the position of the contraction groove is opposite to the auxiliary component 1 and the auxiliary component 2. A telescopic rod (68) is connected in the contraction groove, and a contraction spring (69) is sleeved on the outside of the telescopic rod (68). A baffle (67) is connected to the movable end of the telescopic rod (68), and the baffle (67) is slidably connected in the contraction groove. One end of the contraction spring (69) is connected to the inner wall of the contraction groove, and the other end of the contraction spring (69) is connected to the baffle (67). The baffle (67) is suitable for closing the corresponding straight groove (65), and the straight pipe part of the bent pipe is placed on the baffle (67); A short pull plate (610) is connected to the bottom of the baffle plate (67) close to the curvature detection component (2), a long pull plate (611) is connected to the bottom of the baffle plate (67) away from the curvature detection component (2), a long push plate (99) is connected to the side of the rotating storage plate (98) opposite to the gear two (97), the long push plate (99) is opposite to the short pull plate (610), and a short push plate (911) is connected to the side of the rotating storage plate (98) opposite to the gear three (915), the short push plate (911) is opposite to the long pull plate (611); When the auxiliary component one and the auxiliary component two are driven to move toward the loading plate (61), the short push plate (911) squeezes the long pull plate (611), and the long push plate (99) squeezes the short pull plate (610). The short pull plate (610) and the long pull plate (611) respectively drive the corresponding baffle plates (67) to move in the contraction groove to open the corresponding straight groove (65), so that the two straight pipe sections of the bent pipe respectively enter the grooves on the two rotating receiving plates (98) and the grooves on the movable receiving plate (912) and the fixed receiving plate (910).

10. A method for detecting a bent pipe, characterized in that: A pipe bending detection device according to claim 9 is used, comprising the following steps: S1. First, place the bent pipe to be tested on the loading plate (61), the bent portion of the bent pipe is located at the bent portion groove (64), the straight pipes at both ends of the bent pipe are located at the two straight portion grooves (65), the straight portion grooves (65) are closed by the baffle (67), and the straight pipe portion of the bent pipe is placed on the baffle (67), the auxiliary component 1 and the auxiliary component 2 are moved to the bottom of the loading plate (61), and the baffle (67) is driven to move to open the straight portion groove (65), and the bent pipe falls from the straight portion groove (65) onto the auxiliary component 1 and the auxiliary component 2; S2, starting the regulating motor (23) according to the specified size of the bend to be detected to drive the plurality of placement plates (29) to move synchronously, thereby adjusting the positions of the plurality of placement slots (210) to change the size of the arc-shaped channel formed by the plurality of placement slots (210), the auxiliary component 1 and the auxiliary component 2 move and reset to the bend detection component (2) and place the bend on the plurality of placement plates (29), and push the bend to detect the bend according to whether it can enter the annular channel; S3, the elbow with qualified curvature is stuck in the arc-shaped channel, the driving motor (412) is started to drive the entire curvature detection assembly (2) to move, the end surface of the straight pipe part of the elbow is moved to the position of the hydraulic press (51), the water injection port (52) and the water outlet (53) of the hydraulic press (51) are respectively connected to the two ends of the elbow, and the sealing performance of the elbow is judged by the value displayed on the pressure gauge after water injection; S4: If the curvature and sealing performance of the bent pipe are both qualified, the driving motor (412) is started to move until the distance between the end of the arc-shaped portion of the bent pipe and the cutting disc (47) of the pipe cutting machine (4) is the required total length of the bent pipe, and then the pipe cutting machine (4) is started to drive the cutting disc (47) to rotate and move, so as to cut the two straight sections of the bent pipe; S5. After the cutting is completed, the curvature detection assembly (2) is reset, and the telescopic cylinder (92) in the auxiliary component one and the auxiliary component two is started to lift the bent pipe from the placement groove (210) and move it to the unloading plate (71). During the movement, gear two (97) and gear three (915) respectively engage with the rack (75), thereby driving the two rotating storage plates (98) to rotate in the opposite direction and the movable storage plate (912) to rotate in the direction away from the fixed storage plate (910), thereby losing the restriction on the bent pipe. During the movement, the bent pipe is pushed onto the unloading plate (71) through the fixed storage plate (910).

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