Intelligent adjustable steel pipe joint closing and pressing device

Abstract

The utility model provides an intelligent adjustable steel pipe joint closing and pressing device which comprises a base, an arc rack and a centering assembly are arranged on the top face of the base, and the centering assembly is used for aligning a steel pipe to the axis of the arc rack; the pushing and pressing assemblies are arranged on the inner side of the arc rack; the supporting assemblies are arranged on the inner side of the arc rack in a V shape, and the ends, close to each other, of the supporting assemblies can rotate relatively; the displacement sensor is used for detecting the pipe diameter of the steel pipe; the pressure sensor is used for detecting the pressure borne by the steel pipe; and the PID control module is used for controlling the supporting assembly to rotate according to the pipe diameter of the steel pipe so as to adjust the opening included angle of the V shape, and adjusting the pushing force of the pushing assembly according to the pressure. According to the device provided by the invention, the pressing force can be automatically adjusted when the steel pipe is jointed, and the problem that the pressing force is too large or too small due to manual adjustment is avoided.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of steel pipe jointing, and particularly to an intelligent adjustable steel pipe jointing pressing device. BACKGROUND

[0002] At present, most of the large-diameter steel pipes are manufactured by single steel plate and single support. After forming a cylinder, the welding tool is prepared, and before spot welding, the joint of the steel pipe needs to be jointed due to the joint left during the winding of the steel pipe.

[0003] In the prior art, a fixed support mold or a manually adjustable clamp is usually used to press the steel pipe during jointing. However, such devices have disadvantages in actual application. First, different pipe diameters require specific molds or frequent adjustment of the clamp angle, resulting in poor equipment compatibility. Second, it is difficult to accurately control the pressing force by manual adjustment, which may cause damage to the steel pipe due to excessive pressing force or result in loose jointing due to insufficient pressing force, affecting the processing quality. CONTENT OF THE UTILITY MODEL

[0004] In view of the above-mentioned defects or disadvantages in the prior art, it is desirable to provide an intelligent adjustable steel pipe jointing pressing device to solve the above-mentioned problems.

[0005] The present application provides an intelligent adjustable steel pipe jointing pressing device, comprising:

[0006] a base, an arc rack and a centering assembly are arranged on the top surface of the base, the centering assembly is used to align the steel pipe with the axis of the arc rack;

[0007] a plurality of push components, the push components are arranged on the inner side of the arc rack, and the push components are extendable along the direction perpendicular to the axis of the arc rack;

[0008] a pair of support components, the pair of support components are arranged in a V shape on the inner side of the arc rack, and the end of the pair of support components close to each other is relatively rotatable;

[0009] a displacement sensor, the displacement sensor is installed on the arc rack and used to detect the pipe diameter of the steel pipe;

[0010] a pressure sensor, the pressure sensor is installed on the support component and used to detect the pressure received by the steel pipe;

[0011] a PID control module, the PID control module is used to control the rotation of the support component according to the pipe diameter of the steel pipe, to adjust the opening angle of the V shape, and to adjust the pushing force of the push component according to the pressure.

[0012] The technical scheme provided by the embodiment of the present application further comprises a lifting assembly, the lifting assembly comprises a support platform and a lifting frame, the lifting frame is arranged inside the circular-arc frame, the lifting frame is installed on the top surface of the base and can drive the support platform to lift in a direction perpendicular to the top surface of the base; and the support assembly is installed on the support platform.

[0013] The technical scheme provided by the embodiment of the present application comprises:

[0014] A support frame, one end of the support frame is rotationally connected with the support platform, and the other end of the support frame is hingedly connected with a support rod;

[0015] A sliding block, the sliding block is hingedly connected with the free end of the support rod, and the sliding block is slidingly connected with the support platform in a sliding direction perpendicular to the rotation axis of the support frame;

[0016] A roller, the roller is rotationally installed on the support frame, and a plurality of pressure sensors are distributed on the roller in a circumferential direction;

[0017] A first driving device, the first driving device is electrically connected with the PID control module and is used to drive the sliding block to move.

[0018] The technical scheme provided by the embodiment of the present application comprises:

[0019] An abutting plate, the abutting plate is provided with an arc-shaped abutting surface;

[0020] A second driving device, the second driving device is installed in the circular-arc frame, the second driving device is connected with the abutting plate through a pushing rod, and the second driving device is electrically connected with the PID control module.

[0021] The technical scheme provided by the embodiment of the present application comprises:

[0022] The arc-shaped abutting surface is provided with an elastic non-slip pad, and the roller is provided with a non-slip texture layer.

[0023] The technical scheme provided by the embodiment of the present application comprises:

[0024] A mounting frame, the mounting frame is fixed on the top surface of the base;

[0025] A pair of transverse alignment rods are arranged inside the mounting frame along the direction perpendicular to the top surface of the base and perpendicular to the axis of the circular arc rack, one end of the transverse alignment rod is slidingly installed on the mounting frame through a longitudinal driving assembly, and the longitudinal driving assembly is used to drive the pair of transverse alignment rods to move closer to or farther away from each other.

[0026] According to the technical scheme provided in the embodiment of the application, the longitudinal alignment rod is provided with a first guide groove extending along the direction perpendicular to the top surface of the base, and the first guide groove penetrates through the longitudinal alignment rod, and the transverse alignment rod penetrates through the first guide groove.

[0027] According to the technical scheme provided in the embodiment of the application, the transverse alignment rod is in a cylindrical shape, and the transverse alignment rod is rotatably installed on the longitudinal driving assembly.

[0028] Compared with the prior art, the application has the beneficial effects that: by arranging the pushing and pressing assembly and the supporting assembly, a pressing space of the steel pipe is formed between the pushing and pressing assembly and the supporting assembly, the steel pipe is supported by the supporting assembly after being put in, and then the pushing and pressing assembly is pressed downward, so that the pressing and fixing of the steel pipe joint can be realized; by arranging the pressure sensor, the pressure during the pressing process of the pushing and pressing assembly can be detected, the pushing force of the pushing and pressing assembly is adjusted by the PID control module according to the pressure detected by the pressure sensor, so that the pressing force during the joint of the steel pipe can be automatically adjusted and accurately controlled without manual adjustment, and the pressing force of the steel pipe can always be kept in a suitable pressure range; by arranging the displacement sensor, the pipe diameter of the steel pipe can be detected, and the V-shaped included angle of the pair of supporting assemblies can be adjusted by the PID control module according to the pipe diameter of the steel pipe, so as to adapt to steel pipes of different diameters and ensure that the steel pipe always abuts against the middle position of the supporting assembly, so that the detection result of the pressure sensor is more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0029] Other features, objects and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments made with reference to the accompanying drawings:

[0030] Figure 1 The structural schematic diagram of the intelligent adjustable steel pipe joint pressing device provided in the application is shown in the figure;

[0031] Figure 2 The structural schematic diagram of the intelligent adjustable steel pipe joint pressing device provided in the application is shown in the figure; Figure 1 The rear view schematic diagram of the intelligent adjustable steel pipe joint pressing device is shown in the figure;

[0032] Figure 3 The rear view schematic diagram of the intelligent adjustable steel pipe joint pressing device is shown in the figure; Figure 1 The side view schematic diagram of the intelligent adjustable steel pipe joint pressing device is shown in the figure;

[0033] Figure 4 A schematic diagram of the supporting components;

[0034] Figure 5 A schematic diagram to support another state of the component;

[0035] Figure 6 This is a schematic diagram of the structure of the centering component;

[0036] Figure 7 This is a diagram showing the positional relationship between the longitudinal and transverse alignment bars.

[0037] Reference numerals: 100, base; 101, arc frame; 102, steel pipe; 200, centering assembly; 210, mounting bracket; 220, longitudinal alignment rod; 221, first guide groove; 230, transverse drive assembly; 231, third drive device; 232, first lead screw; 233, first slider; 240, transverse alignment rod; 250, longitudinal drive assembly; 251, fourth drive device; 252, second lead screw; 2 53. Second slider; 254. Bearing seat; 300. Pushing assembly; 310. Abutment plate; 320. Arc-shaped abutment surface; 321. Elastic anti-slip pad; 330. Push rod; 400. Support assembly; 410. Support frame; 420. Support rod; 430. Sliding block; 440. Roller; 500. Displacement sensor; 600. Pressure sensor; 700. Lifting assembly; 701. Support platform; 702. Lifting frame. Detailed Implementation

[0038] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] Please refer to Figures 1-7 This application provides an intelligent adjustable steel pipe joint clamping device, comprising:

[0041] A base 100, on the top surface of which an arc frame 101 and an alignment component 200 are arranged, the alignment component 200 being used to align the steel pipe 102 with the axis of the arc frame 101;

[0042] Multiple pressing components 300 are provided inside the arc frame 101, and the pressing components 300 are extendable and retractable along the axis perpendicular to the arc frame 101.

[0043] A pair of support assemblies 400 are arranged in a V shape inside the circular arc rack 101, and the ends of the pair of support assemblies 400 close to each other are relatively rotatable;

[0044] A displacement sensor 500 is installed on the circular arc rack 101 for detecting the pipe diameter of the steel pipe 102;

[0045] A pressure sensor 600 is installed on the support assembly 400 for detecting the pressure received by the steel pipe 102;

[0046] A PID control module is used to control the rotation of the support assembly 400 according to the pipe diameter of the steel pipe 102 to adjust the opening angle of the V-shaped opening, and to adjust the pushing force of the pushing assembly 300 according to the pressure.

[0047] Specifically, the base 100 is rectangular, and the circular arc rack 101 and the centering assembly 200 are arranged on the base 100. In this embodiment, one circular arc rack 101 and one centering assembly 200 are arranged, and the circular arc rack 101 and the centering assembly 200 are arranged in a first direction, which is parallel to the top surface of the base 100. In other embodiments, multiple circular arc racks 101 and multiple centering assemblies 200 can be arranged on the base 100. The circular arc rack 101 is fixed to the top surface of the base 100, and multiple pushing assemblies 300 are arranged inside the circular arc rack 101. In this embodiment, three pushing assemblies 300 are arranged, one of which is arranged at the top inside of the circular arc rack 101, and the extension direction is perpendicular to the top surface of the base 100, and the other two pushing assemblies 300 are arranged on the two sides, and the extension directions of the two pushing assemblies 300 are respectively different from the extension direction of the pushing assembly 300 at the top by 45°. By arranging multiple pushing assemblies 300, the steel pipe 102 can be pressed from multiple angles, and the distribution of the pressing effect is more uniform. The centering assembly 200 is used to center the steel pipe 102, that is, to align the axis of the steel pipe 102 with the axis of the circular arc rack 101, so as to facilitate the pressing of the joint of the steel pipe 102.

[0048] A pair of support assemblies 400 are further arranged on the inner side of the circular arc frame 101, and are arranged in a V shape so as to position and support the steel pipe 102. The pair of support assemblies 400 can rotate relative to each other to change the opening angle of the V shape, so as to adapt to the stable support of steel pipes 102 of different diameters, and also make the detection result of the displacement sensor 500 more accurate. The pair of support assemblies 400 and the three push assemblies 300 form a pressing space of the steel pipe 102. After the steel pipe 102 is inserted into the pressing space, the pair of support assemblies 400 support the steel pipe 102 below, and the three push assemblies 300 press the steel pipe 102 above, so as to ensure that the joint of the steel pipe 102 is tightly fitted.

[0049] The displacement sensor 500 includes two single-point laser sensors arranged at opposite positions on the inner side of the circular arc frame 101. The distance between the two single-point laser sensors is a fixed value L, i.e. the diameter of the circular arc frame 101. It can be understood that when the steel pipe 102 passes through the detection area of the displacement sensor 500, one of the single-point laser sensors measures the distance from the surface of one side of the steel pipe 102 to the sensor as d1, and the other single-point laser sensor measures the distance from the surface of the other side of the steel pipe 102 to the sensor as d2. The actual pipe diameter of the steel pipe 102 is D=L-(d1+d2), wherein D is the pipe diameter of the steel pipe 102. The displacement sensor 500 is electrically connected with the PID control module. The PID control module performs fuzzy PID control on the angle between the pair of support assemblies 400 according to the pipe diameter of the steel pipe 102, so that the support assemblies 400 can be self-adjusted to adapt to steel pipes 102 of different diameters without manual intervention.

[0050] The pressure sensor 600 is arranged on the support assembly 400. When the push assembly 300 presses the steel pipe 102 downward, the pressure acting on the steel pipe 102 acts on the support assembly 400, and the pressure sensor 600 can collect the pressure acting on the steel pipe 102. The pressure sensor 600 is electrically connected with the PID control module. The PID control module adjusts the downward pressure applied by the push assembly 300 according to the pressure value, so that the push assembly 300 can adaptively and self-adjust the pressing force on the steel pipe 102 without manual adjustment, so as to ensure that the pressing force is always within a suitable range, avoid that the pressing force is too small to press the joint, and also avoid that the pressing force is too large to damage the steel pipe 102.

[0051] Further, the push assembly 300 includes:

[0052] The abutting plate 310 is provided with an arc abutting surface 320.

[0053] A second driving device is installed in the circular arc frame 101, and the second driving device is connected with the abutting plate 310 through a pushing rod 330. The second driving device is electrically connected with the PID control module.

[0054] Specifically, the second driving device is installed in the circular arc frame 101, and the output end of the second driving device is connected with the pushing rod 330. The pushing rod 330 extends along an axis direction perpendicular to the circular arc frame 101. The pushing rod 330 is driven to realize extension and contraction through the second driving device. The second driving device can be a servo cylinder or a stepping motor. The second driving device is electrically connected with the PID control module. When the second driving device is a servo cylinder, the PID control module controls the air pressure of the servo cylinder to adjust the pushing force of the pushing rod 330. When the second driving device is a stepping motor, the PID control module controls the torque of the stepping motor to adjust the pushing force of the pushing rod 330. The abutting plate 310 is installed at the free end of the pushing rod 330. An arc abutting surface 320 is arranged on the side of the abutting plate 310 close to the axis of the circular arc frame 101. The arc abutting surface 320 is used to better adhere to the steel pipe 102 when the steel pipe 102 is compressed.

[0055] Further, the lifting assembly 700 is further provided. The lifting assembly 700 includes a support platform 701 and a lifting frame 702. The lifting frame 702 is arranged inside the circular arc frame 101. The lifting frame 702 is installed on the top surface of the base 100 and can drive the support platform 701 to lift along a direction perpendicular to the top surface of the base 100. The support assembly 400 is installed on the support platform 701.

[0056] Specifically, the support platform 701 is arranged inside the circular arc frame 101 and parallel to the top surface of the base 100. The support platform 701 is installed on the top surface of the base 100 through the lifting frame 702. The lifting frame 702 can drive the support platform 701 to lift along a second direction. The second direction is perpendicular to the top surface of the base 100. Optionally, the lifting frame 702 is driven by a servo cylinder or a servo oil cylinder. By providing the lifting assembly 700, the height of the support assembly 400 can be adjusted to support the centered steel pipe 102.

[0057] Further, the support assembly 400 includes:

[0058] A support frame 410 is rotatably connected with one end of the support platform 701. A support rod 420 is hingedly connected with the other end of the support frame 410.

[0059] A sliding block 430 is hingedly connected with the free end of the support rod 420. The sliding block 430 is slidably connected with the support platform 701 along a sliding direction perpendicular to the rotation axis of the support frame 410.

[0060] A plurality of pressure sensors 600 are distributed on the circumference of the roller 440 which is rotatably mounted on the support frame 410.

[0061] A first driving device is electrically connected with the PID control module and used to drive the sliding block 430 to move.

[0062] Specifically, the top surface of the support platform 701 is provided with a groove, and the support assembly 400 is arranged in the groove. The support assembly 400 is composed of a support frame 410, a support rod 420, a sliding block 430, a roller 440 and a first driving device. The support frame 410 is a square frame, one end of the support frame 410 is rotatably connected with a fixed seat 703 in the groove, and the rotation axis extends along the second direction; the roller 440 is arranged on the inner side of the support frame 410, and both ends of the roller 440 are rotatably connected with the inner side of the support frame 410; the other end of the support frame 410 is hingedly connected with one end of the support rod 420, and the other end of the support rod 420 is hingedly connected with the sliding block 430; the sliding block 430 is slidably connected with the bottom of the groove, and the sliding direction is the third direction which is perpendicular to the first direction and the second direction; the first driving device is connected with the sliding block 430 and electrically connected with the PID control module, and the PID control module drives the first driving device according to the pipe diameter of the steel pipe 102, thereby driving the sliding block 430 to slide; optionally, the first driving device is a stepping motor.

[0063] The pressure sensor 600 is embedded in the middle position of the roller 440, and the angle of the support assembly 400 is adjusted to keep the roller 440 tangent to the steel pipe 102 and the middle position of the roller 440 in contact with the steel pipe 102, thereby improving the accuracy of pressure detection. A plurality of pressure sensors 600 are arranged in the circumferential direction of the middle position of the roller 440, so that no matter at which angle the roller 440 contacts the steel pipe 102, one pressure sensor 600 can detect the pressure.

[0064] The two support assemblies 400 are symmetrically arranged, when the sliding blocks 430 of the two support assemblies 400 move towards each other, the two support frames 410 tend to be gentle through the transmission action of the two support rods 420, thereby increasing the included angle between the two rollers 440 to adapt to the steel pipe 102 with larger pipe diameter; when the sliding blocks 430 of the two support assemblies 400 move away from each other, the two support frames 410 tend to be steep through the transmission action of the two support rods 420, thereby reducing the included angle between the two rollers 440 to adapt to the steel pipe 102 with smaller pipe diameter.

[0065] Further, the arc-shaped abutting surface 320 is provided with an elastic anti-skid pad 321, and the roller 440 is provided with an anti-skid texture layer.

[0066] Specifically, in order to ensure the stability of the steel pipe 102 when it is pressed, an elastic non-slip pad 321 is arranged on the arc-shaped abutting surface 320. On the one hand, the abutting plate 310 has a certain buffer when it contacts the steel pipe 102. On the other hand, the friction between the abutting plate 310 and the steel pipe 102 is increased after the contact, thereby avoiding the movement of the steel pipe 102. Similarly, a side anti-slip texture layer is sleeved on the roller 440. The anti-slip texture layer is used to increase the friction between the roller 440 and the steel pipe 102. An opening is arranged on the anti-slip texture layer corresponding to the position of the pressure sensor 600, so as to avoid affecting the accuracy of the detection of the pressure sensor 600.

[0067] Further, the centering assembly 200 comprises:

[0068] a mounting frame 210, the mounting frame 210 being fixed on the top surface of the base 100;

[0069] a pair of longitudinal alignment rods 220, the pair of longitudinal alignment rods 220 being arranged inside the mounting frame 210 along an axis direction parallel to the top surface of the base 100 and perpendicular to the circular arc rack 101, one end of the longitudinal alignment rod 220 being slidably installed on the base 100 through a transverse driving assembly 230, the transverse driving assembly 230 being used to drive the pair of longitudinal alignment rods 220 to move close to or away from each other;

[0070] a pair of transverse alignment rods 240, the pair of transverse alignment rods 240 being arranged inside the mounting frame 210 along an axis direction perpendicular to the top surface of the base 100 and perpendicular to the circular arc rack 101, one end of the transverse alignment rod 240 being slidably installed on the mounting frame 210 through a longitudinal driving assembly 250, the longitudinal driving assembly 250 being used to drive the pair of transverse alignment rods 240 to move close to or away from each other.

[0071] Specifically, the pair of longitudinal alignment rods 220 are arranged along the third direction, and each longitudinal alignment rod 220 extends along the second direction. One end of the pair of longitudinal alignment rods 220 close to the base 100 is connected with the transverse driving assembly 230, which is arranged inside the base 100. The transverse driving assembly 230 comprises a third driving device 231, and the third driving device 231 is drivingly connected with a first lead screw 232 having opposite screw directions at two ends, the first lead screw 232 extending along the third direction. A first limiting groove corresponding to the first lead screw 232 is arranged on the top surface of the base 100, and the extending direction of the first limiting groove is the same as that of the first lead screw 232. Two first sliding blocks 233 are arranged in the first limiting groove, and the two first sliding blocks 233 are respectively threadedly connected with the two ends of the first lead screw 232. The first sliding blocks 233 are limited in the moving direction by the first limiting groove. The two first sliding blocks 233 are respectively fixedly connected with the pair of longitudinal alignment rods 220. By manually starting the third driving device 231, the third driving device 231 drives the two first sliding blocks 233 to move close to each other, thereby driving the pair of longitudinal alignment rods 220 to align the steel pipe 102 in the transverse direction.

[0072] The pair of transverse alignment rods 240 are arranged along the second direction, and each transverse alignment rod 240 extends along the third direction. One end of the pair of transverse alignment rods 240 is connected with the longitudinal driving assembly 250, which is arranged inside one side of the mounting frame 210. The longitudinal driving assembly 250 comprises a fourth driving device 251, and the fourth driving device 251 is drivingly connected with a second lead screw 252 having opposite screw directions at two ends, the second lead screw 252 extending along the second direction. A second limiting groove corresponding to the second lead screw 252 is arranged on the mounting frame 210, and the extending direction of the second limiting groove is the same as that of the second lead screw 252. Two second sliding blocks 253 are arranged in the second limiting groove, and the two second sliding blocks 253 are respectively fixedly connected with the pair of transverse alignment rods 240. By manually starting the fourth driving device 251, the fourth driving device 251 drives the two second sliding blocks 253 to move close to each other, thereby driving the pair of transverse alignment rods 240 to align the steel pipe 102 in the longitudinal direction. A pair of bearing seats 254 are arranged inside the other side of the mounting frame 210, and the pair of bearing seats 254 are slidable in the mounting frame 210, and the sliding direction is the same as the extending direction of the second limiting groove. The pair of bearing seats 254 are respectively connected with one end of the pair of transverse alignment rods 240 away from the second lead screw 252.

[0073] Further, a first guide groove 221 extending along the direction perpendicular to the top surface of the base 100 is arranged on the longitudinal alignment rod 220, and the first guide groove 221 penetrates the longitudinal alignment rod 220. The transverse alignment rod 240 penetrates the first guide groove 221.

[0074] Specifically, a first guide slot 221 is formed in the middle portion of the longitudinal alignment rod 220 by hollowing out, the first guide slot 221 extending along the second direction, and a pair of transverse alignment rods 240 penetrating the first guide slot 221, the first guide slot 221 being used to guide the movement of the transverse alignment rod 240 along the second direction.

[0075] A second guide slot is formed in the middle portion of the top of the mounting frame 210 by hollowing out, the second guide slot extending along the third direction, and a pair of longitudinal alignment rods 220 penetrating the second guide slot from the end away from the base 100, the second guide slot being used to guide the movement of the longitudinal alignment rod 220 along the third direction.

[0076] Further, the transverse alignment rod 240 is cylindrical, and the transverse alignment rod 240 is rotatably mounted on the longitudinal drive assembly 250.

[0077] Specifically, the transverse alignment rod 240 is rotatably mounted on the second sliding block 253, and by setting the transverse alignment rod 240 as cylindrical, not only can the steel pipe 102 be centered, but also the steel pipe 102 can be moved conveniently when it is erected on the transverse alignment rod 240.

[0078] The above description is merely preferred embodiments of the present application and a description of the principles of the technology used. It should be understood by those skilled in the art that the scope of the application involved in the present application is not limited to the technical solutions formed by the specific combinations of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or equivalent features without departing from the inventive concept. For example, the above features can be replaced with technical features disclosed in the present application (but not limited to) having similar functions to form technical solutions.

Claims

1. An intelligent adjustable steel pipe joint pressing device, characterized in that, The application relates to a steel pipe centering device, which comprises a base (100) provided with a circular-arc frame (101) and a centering assembly (200) on the top surface of the base (100), the centering assembly (200) being used for aligning a steel pipe (102) with the axis of the circular-arc frame (101); a plurality of push-press assemblies (300) arranged on the inner side of the circular-arc frame (101) and being retractable along the direction perpendicular to the axis of the circular-arc frame (101); a pair of support assemblies (400) arranged on the inner side of the circular-arc frame (101) in a V shape, the ends of the support assemblies (400) being relatively rotatable; a displacement sensor (500) installed on the circular-arc frame (101) and used for detecting the pipe diameter of the steel pipe (102); a pressure sensor (600) installed on the support assembly (400) and used for detecting the pressure received by the steel pipe (102); and a PID control module used for controlling the rotation of the support assembly (400) according to the pipe diameter of the steel pipe (102) to adjust the opening angle of the V shape and adjusting the pushing force of the push-press assembly (300) according to the pressure. The steel pipe centering device further comprises a lifting assembly (700) comprising a support platform (701) and a lifting frame (702), the lifting frame (702) being arranged on the inner side of the circular-arc frame (101), the lifting frame (702) being installed on the top surface of the base (100) and being capable of driving the support platform (701) to lift along the direction perpendicular to the top surface of the base (100), and the support assembly (400) being installed on the support platform (701). The support assembly (400) comprises a support frame (410) rotatably connected with the support platform (701) at one end and hinged with a support rod (420) at the other end, a sliding block (430) hinged with the free end of the support rod (420) and slidably connected with the support platform (701) along the direction perpendicular to the rotation axis of the support frame (410), and a roller (440) rotatably installed on the support frame (410) and provided with a plurality of pressure sensors (600) distributed on the roller (440) in the circumferential direction. The push-press assembly (300) comprises an abutting plate (310) provided with an arc-shaped abutting surface (320), and a second driving device installed in the circular-arc frame (101) and connected with the abutting plate (310) through a pushing rod (330), the second driving device being electrically connected with the PID control module. ​ ​ ​ 2. The intelligent adjustable steel pipe joint compression device according to claim 1, characterized in that, ​ 3. The intelligent adjustable steel pipe joint hold-down device of claim 2, wherein, ​ ​ ​ ​ ​ 4. The intelligent adjustable steel pipe joint compression device according to claim 3, characterized in that, ​ ​ ​ 5. The intelligent adjustable steel pipe joint hold-down device of claim 4, wherein, An elastic anti-skid pad (321) is arranged on the arc-shaped abutting surface (320), and an anti-skid texture layer is arranged on the roller (440).

6. The intelligent adjustable steel pipe joint hold-down apparatus of claim 5, wherein, The centering assembly (200) comprises: a mounting rack (210) fixed to the top surface of the base (100); a pair of longitudinal alignment rods (220) arranged inside the mounting rack (210) along an axis direction parallel to the top surface of the base (100) and perpendicular to the circular arc rack (101), one end of the longitudinal alignment rod (220) being slidably mounted on the base (100) through a transverse driving assembly (230), the transverse driving assembly (230) being used to drive the pair of longitudinal alignment rods (220) to move closer to or farther away from each other; a pair of transverse alignment rods (240) arranged inside the mounting rack (210) along an axis direction perpendicular to the top surface of the base (100) and perpendicular to the circular arc rack (101), one end of the transverse alignment rod (240) being slidably mounted on the mounting rack (210) through a longitudinal driving assembly (250), the longitudinal driving assembly (250) being used to drive the pair of transverse alignment rods (240) to move closer to or farther away from each other.

7. The intelligent adjustable steel pipe joint hold-down apparatus of claim 6, wherein, The longitudinal alignment rod (220) is provided with a first guide groove (221) extending along a direction perpendicular to the top surface of the base (100), the first guide groove (221) penetrating through the longitudinal alignment rod (220), and the transverse alignment rod (240) penetrating through the first guide groove (221).

8. The intelligent adjustable steel pipe joint hold-down apparatus of claim 7, wherein, The transverse alignment rod (240) is in a cylindrical shape, and is rotatably mounted on the longitudinal driving assembly (250).

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