Welding clamping device for thin-wall carbon steel process pipeline

Abstract

The utility model discloses a thin-wall carbon steel process pipeline welding clamping device which comprises a conveying roller, an outer clamping device and an inner clamping device, the outer clamping device and the inner clamping device are installed on a bottom plate of the conveying roller, and the conveying roller is driven by a servo motor to adjust the welding distance of a thin-wall carbon steel process pipeline. The outer clamping device fixes the thin-wall carbon steel process pipeline through two V-shaped clamping blocks installed on two first hydraulic cylinders and umbrella-shaped rubber pads on two third hydraulic cylinders of the inner clamping device, the clamping distance of the inner clamping device is adjusted through a second hydraulic cylinder, and therefore welding is conveniently completed. The clamping device solves the problem that the large-diameter thin-wall carbon steel process pipeline is easily influenced by environmental factors such as materials and pipeline diameters in the welding and clamping process, solves the problems that the large-diameter thin-wall carbon steel process pipeline is easy to deform, easy to clamp off, high in cost and the like in the welding and clamping process, ensures the safety performance in the clamping process of the large-diameter thin-wall carbon steel pipeline, and improves the welding quality of the large-diameter thin-wall carbon steel pipeline. The welding quality is improved.

Description

Technical Field

[0001] The utility model relates to the field of marine engineering welding, in particular to a thin-wall carbon steel process pipeline welding clamping device. Background Art

[0002] Welding fixtures are an indispensable part of welding process equipment. The current method used for the clamping device for welding and positioning large-diameter thin-walled carbon steel process pipelines is mainly to select the corresponding size of clamping equipment according to the material, diameter, length, etc. of the pipeline, and mainly clamp on the outside of the pipeline. During the clamping process, it is easy to cause large deformation of thin-walled pipelines, and the clamping method is not reliable and easy to clamp off. Although some clamping devices have high precision and reliable clamping, they are expensive. Therefore, the utility model proposes a thin-walled carbon steel process pipeline welding clamping device. Summary of the invention

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a thin-walled carbon steel process pipeline welding clamping device to reduce the clamping deformation of the thin-walled carbon steel process pipeline and ensure the reliability of the clamping.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The utility model discloses a thin-wall carbon steel process pipeline welding clamping device, comprising a bottom plate, a conveying roller device, an outer clamping device and an inner clamping device installed on the bottom plate;

[0006] The conveying roller device comprises a roller bracket, and there are 4 roller brackets in total, which are respectively welded and fixed on the four corners of the bottom plate in an inclined manner. Each roller bracket is fixed with a roller by a shaft key, and the roller can roll, wherein the shafts of the two rollers located at the rear side of the bottom plate are respectively connected to the output shafts of two identical servo motors, and the servo motors are fixed to the roller brackets by bolts;

[0007] The external clamping device comprises a U-shaped bracket, the U-shaped bracket is fixed to the bottom plate between the front and rear rollers by bolts, two first hydraulic cylinders are fixed on the left and right sides of the U-shaped bracket, the two first hydraulic cylinders are installed relatively, two V-shaped clamping blocks are fixed on the telescopic rods of the first hydraulic cylinders, the two V-shaped clamping blocks are installed relatively, and a first pressure sensor is installed at the oil inlet of each first hydraulic cylinder;

[0008] The inner clamping device comprises a support frame, which is fixed to the rear side of the bottom plate by bolts, and a second hydraulic cylinder is fixedly installed on the support frame, and two third hydraulic cylinders are symmetrically fixed on the left and right sides of the telescopic rod of the second hydraulic cylinder, and a spring is fixedly installed on the telescopic rod of the third hydraulic cylinder, and an umbrella-shaped rubber pad is adhered to one end of the spring, and a third pressure sensor is installed at the oil inlet of each third hydraulic cylinder;

[0009] The signal output ends of the first pressure sensor and the third pressure sensor are connected to the signal input ends of the computer through communication lines, and the signal input ends of the servo motor, the controller of the first hydraulic cylinder, the controller of the second hydraulic cylinder, and the controller of the third hydraulic cylinder are connected to the signal output ends of the computer through communication lines.

[0010] The beneficial effects of the utility model are:

[0011] The utility model adopts a hydraulic clamping solution to solve the problem that large-diameter thin-walled carbon steel process pipelines are easily affected by environmental factors such as materials and pipeline diameters during the welding clamping process, and solves the problem that large-diameter thin-walled carbon steel process pipelines are easily deformed, easily clamped off, and have high costs during the welding clamping process. The utility model has high applicability and high fit, ensures the safety performance of the large-diameter thin-walled carbon steel pipeline clamping process, and improves the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a three-dimensional structural diagram of the utility model thin-walled carbon steel process pipeline welding clamping device;

[0013] Figure 2 yes Figure 1 Schematic diagram of the conveying roller device shown;

[0014] Figure 3 yes Figure 1 Schematic diagram of the external clamping device of the utility model;

[0015] Figure 4 yes Figure 1 Schematic diagram of the inner clamping device of the utility model;

[0016] Figure 5 for Figure 4 The schematic diagram of the spring structure installation of the inner clamping device of the utility model is shown;

[0017] Figure 6 The utility model is a schematic diagram of the working principle of a welding clamping device for thin-walled carbon steel process pipelines. DETAILED DESCRIPTION

[0018] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] As shown in the attached drawings, the thin-walled carbon steel process pipeline welding clamping device of the utility model comprises a base plate 1 and a conveying roller device 2, an outer clamping device 3 and an inner clamping device 4 installed on the base plate 1;

[0020] The conveying roller device 2 comprises a roller bracket 2-1, and the roller bracket 2-1 is 4 in total, and is welded and fixed on the four corners of the bottom plate 1 in an inclined manner as shown in the attached figure. Figure 2 As shown, each roller bracket 2-1 is fixed with a roller 2-2 by a shaft key, and the roller 2-2 can roll, wherein the shafts of the two rollers 2-2 located at the rear side of the bottom plate 1 are respectively connected to the output shafts of two identical servo motors 2-3, and the servo motors 2-3 are fixed to the roller bracket 2-1 by bolts;

[0021] The external clamping device 3 includes a U-shaped bracket 3-1, which is fixed to the bottom plate 1 between the front and rear rollers 2-2 by bolts, and two first hydraulic cylinders 3-2 are fixed on the left and right sides of the U-shaped bracket 3-1, and the two first hydraulic cylinders 3-2 are installed relatively to each other, and two V-shaped clamping blocks 3-3 are fixedly installed on the telescopic rods of the first hydraulic cylinders 3-2, and the two V-shaped clamping blocks 3-3 are installed relatively to each other, and a first pressure sensor 3-4 is installed at the oil inlet of each first hydraulic cylinder 3-2;

[0022] The inner clamping device 4 includes a support frame 4-1, which is fixed to the rear side of the base plate 1 by bolts, and a second hydraulic cylinder 4-5 is fixedly installed on the support frame 4-1, and two third hydraulic cylinders 4-2 are symmetrically fixed on the left and right sides of the telescopic rod of the second hydraulic cylinder 4-5, and a spring 4-6 is fixedly installed on the telescopic rod of the third hydraulic cylinder 4-2, and an umbrella-shaped rubber pad 4-3 is adhered to one end of the spring 4-6, and a third pressure sensor 4-4 is installed at the oil inlet of each third hydraulic cylinder 4-2;

[0023] The signal output ends of the first pressure sensor 3-4 and the third pressure sensor 4-4 are respectively connected to the signal input ends of the computer through communication lines, and the signal input ends of the servo motor 2-3, the controller of the first hydraulic cylinder 3-2, the controller of the second hydraulic cylinder 4-5, and the controller of the third hydraulic cylinder 4-2 are respectively connected to the signal output ends of the computer through communication lines.

[0024] The specific working principle is as follows:

[0025] The thin-walled carbon steel process pipeline welding clamping device is symmetrically placed and fixed on the ground, and the two sections of thin-walled large-diameter pipelines 5 are hoisted and placed on the conveying roller device 2 by a crane. The servo motor 2-3 is started by computer control. The servo motor 2-3 drives the roller 2-2 to rotate and adjust the gap between the two sections of thin-walled large-diameter pipelines 5. After the adjustment is completed, the servo motor 2-3 is stopped by computer control, and then the telescopic rod of the second hydraulic cylinder 4-5 of the inner clamping device 4 is controlled by computer to extend. After all the extensions are made, the telescopic rod of the third hydraulic cylinder 4-2 is extended until the umbrella-shaped rubber pad 4-3 contacts the inner wall of the thin-walled large-diameter pipeline 5. At this time, the third pressure sensor 4-4 detects the pressure change and transmits the signal to the computer. The computer controls to stop the extension of the third hydraulic cylinder 4-2 After the third hydraulic cylinder 4-2 stops extending, the telescopic rod of the first hydraulic cylinder 3-2 of the outer clamping device 3 begins to extend until the V-shaped clamping block 3-3 on the telescopic rod of the first hydraulic cylinder 3-2 contacts the outer wall of the thin-walled large-diameter pipeline 5 and clamps it. At this time, the first pressure sensor 3-4 detects the pressure change and transmits the signal to the computer. The computer controls the extension of the telescopic rod of the first hydraulic cylinder 3-2 to stop, and then starts welding. After welding is completed, the computer controls the telescopic rod of the first hydraulic cylinder 3-2 of the outer clamping device 3 to retract, and then the telescopic rod of the third hydraulic cylinder 4-2 of the inner clamping device 4 is retracted, and the telescopic rod of the second hydraulic cylinder 4-5 is retracted. After all the hydraulic cylinders are retracted, the welded thin-walled large-diameter pipeline 5 is hoisted to the specified position by a crane.

[0026] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. Thin-walled carbon steel process pipeline welding clamping device, characterized by: It includes a bottom plate, a conveying roller device, an outer clamping device and an inner clamping device installed on the bottom plate; The conveying roller device comprises a roller bracket, and there are 4 roller brackets in total, which are respectively welded and fixed on the four corners of the bottom plate in an inclined manner. Each roller bracket is fixed with a roller by a shaft key, and the roller can roll, wherein the shafts of the two rollers located at the rear side of the bottom plate are respectively connected to the output shafts of two identical servo motors, and the servo motors are fixed to the roller brackets by bolts; The external clamping device comprises a U-shaped bracket, the U-shaped bracket is fixed to the bottom plate between the front and rear rollers by bolts, two first hydraulic cylinders are fixed on the left and right sides of the U-shaped bracket, the two first hydraulic cylinders are installed relatively, two V-shaped clamping blocks are fixed on the telescopic rods of the first hydraulic cylinders, the two V-shaped clamping blocks are installed relatively, and a first pressure sensor is installed at the oil inlet of each first hydraulic cylinder; The inner clamping device comprises a support frame, which is fixed to the rear side of the bottom plate by bolts, and a second hydraulic cylinder is fixedly installed on the support frame, and two third hydraulic cylinders are symmetrically fixed on the left and right sides of the telescopic rod of the second hydraulic cylinder, and a spring is fixedly installed on the telescopic rod of the third hydraulic cylinder, and an umbrella-shaped rubber pad is adhered to one end of the spring, and a third pressure sensor is installed at the oil inlet of each third hydraulic cylinder; The signal output ends of the first pressure sensor and the third pressure sensor are connected to the signal input ends of the computer through communication lines, and the signal input ends of the servo motor, the controller of the first hydraulic cylinder, the controller of the second hydraulic cylinder, and the controller of the third hydraulic cylinder are connected to the signal output ends of the computer through communication lines.

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