A self-leveling steel pipe welding auxiliary bracket

Abstract

The present invention discloses a self-leveling steel pipe welding auxiliary bracket, including a front and a rear group of parallel support frames, each group of support frames is provided with an electric screw lifting device and a locking and fixing device; the two ends of the pre-welded steel pipe are respectively suspended and fixed by the front and rear support frames to match with another pre-welded steel pipe group; the support frame is a steel frame of a door-type structure, and the electric screw lifting device is composed of an electromagnetic brake motor, a turbine screw lifter, a chassis, etc., and an inclination sensor is installed on the steel plate base above the hoop, which can measure the vertical angle deviation of the steel pipe and transmit the voltage corresponding to the inclination to the electromagnetic brake motor controller. The controller controls the electromagnetic brake motor to rotate after calculating the screw lifting height through an algorithm, and drives the turbine screw lifter to adjust the height of the steel pipe up and down. The bracket of the present invention is easy to install and use, can realize the adjustment of the level, height and axial direction of the steel pipe, and can be folded and carried, which can effectively meet the requirements of on-site installation and welding construction of steel pipe segments.

Description

Technical Field

[0001] The present invention belongs to the technical field of metal structure installation and construction of water conservancy and drainage projects, and relates to the installation of water conservancy, municipal engineering and construction engineering water conservancy and drainage pipelines, and specifically to a self-leveling steel pipe welding auxiliary bracket suitable for on-site welding and lengthening construction of water conservancy and drainage pressure steel pipes. Background Art

[0002] Since the installation and construction of water transmission and diversion pipelines are linear projects, pressure steel pipes are mostly produced in factories, transported to the construction site in sections and installed in place. During the installation process, the quality of pipeline welding construction directly affects the overall construction quality of the pipeline installation project.

[0003] Traditional pipeline welding construction requires two short steel pipes to be welded together and placed directly on the pipeline installation base trench for welding. Due to the flatness of the installation base trench and the on-site welding conditions, pressure steel pipes often have uneven interfaces, unstable pipelines, and contaminated joints, which increases the difficulty of pipeline welding. The quality of welded joints is poor, and the weight of the water supply pressure pipeline is heavy. When adjusting the butt joint, manual cooperation with lifting equipment such as car cranes is required to adjust the horizontality of the pressure pipeline and the gap between the joints to find the appropriate welding angle and spacing, resulting in low construction efficiency. Therefore, finding a self-leveling steel pipe welding auxiliary bracket suitable for pressure steel pipe butt welding construction on construction sites is of great significance to speed up the installation efficiency of steel pipes, improve the quality of welded joints, and reduce the intensity of manual labor. Summary of the invention

[0004] The problem to be solved by the present invention is to provide a self-leveling steel pipe welding auxiliary bracket which can effectively solve the on-site installation and welding construction problems of pressure steel pipe segments such as water supply pipelines of water pumping stations in view of the above shortcomings.

[0005] The present invention is achieved through the following technical solutions:

[0006] A self-leveling steel pipe welding auxiliary bracket, characterized in that: it comprises a front and a rear set of parallel support frames, each set of support frames is provided with an electric screw lifting device and a locking and fixing device; both ends of the pre-welded steel pipe are respectively suspended and fixed by the locking and fixing devices of the front and rear support frames, and the front end of the pre-welded steel pipe is matched with another pre-welded steel pipe group;

[0007] The supporting frame is a steel frame of portal structure;

[0008] The electric screw lifting device is composed of a servo motor fixed to the middle of the crossbeam of the support frame portal structure and a worm screw lifting mechanism driven by the servo motor. The bottom of the lifting screw of the worm screw lifting mechanism is a ball head, which is embedded in the groove on the top surface of the chassis of the locking and fixing device and is rotatably connected to the chassis.

[0009] The locking and fixing device includes a chassis, a steel plate base and a clamp; a slide groove is provided on the top surface of the steel plate base, a slide rail is provided on the bottom of the chassis, and the chassis slide rail is embedded in the slide groove on the top surface of the steel plate base and is slidably connected with the steel plate base for horizontal sliding adjustment of the steel pipe; multiple groups of clamps for fixing and hanging welded steel pipes are arranged on both sides of the steel plate base, and each group of clamps is symmetrically arranged and rotatably connected and fixed with the steel plate base through a rotating shaft;

[0010] An inclination sensor is arranged at the front end of the steel plate base of the first group of support frames; a controller is connected with the inclination sensor and a servo motor control.

[0011] The support frame described in the present invention is composed of a horizontal rod, an adjustable vertical rod and an oblique brace to form a door-shaped structure. The horizontal rod is hinged to the adjustable vertical rod and forms a stable supporting door-shaped structure through the oblique brace. Two groups of door-shaped beams are arranged in parallel and connected and fixed by connecting rods to form a support frame. The lower end of the vertical rod of the door-shaped structure is height-adjustable through a telescopic joint, and a detachable supporting steel plate is provided at the bottom end.

[0012] Furthermore, one side of the clamp is a stainless steel arc clamp, and a buckle is installed at the lower end of the other side. The stainless steel arc clamp passes through the bottom of the steel pipe and is inserted into the buckle to tighten and fix the hanging steel pipe.

[0013] Furthermore, the inclination sensor adopts a single-axis inclination sensor with analog voltage output and a small range accuracy of 0.005°, and is used to measure the angle between the axis of the steel pipe locked and fixed by the clamp and the horizontal line.

[0014] The servo motor of the present invention adopts an electromagnetic brake motor.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The device of the present invention adopts an adjustable column and a horizontal rod hinged to the adjustable column to form a door-shaped support frame, which can realize the disassembly and folding of the bracket and the height adjustment, and has strong portability and applicability.

[0017] 2. The device of the present invention uses an inclination sensor to detect the horizontality of the welding object, and converts the inclination information into a voltage signal and transmits it to the motor controller. The controller controls the electromagnetic brake motor to rotate and drive the turbine screw lifter to achieve automatic adjustment of the horizontality of the welding object.

[0018] 3. The device of the present invention arranges at least two sets of door frames in parallel at both ends of the welded steel pipe, and realizes the overall lifting of the steel pipe and the free adjustment of the height of both ends through the ball head under the lifting screw, thereby ensuring the horizontality of the steel pipe.

[0019] 4. The device of the present invention can achieve parallel movement along the axis within a certain range after the steel pipe is lifted by slidingly connecting the chassis with the steel plate base, and quickly adjust the spacing of the butt welds between the steel pipes, which is convenient for welding construction.

[0020] 5. The invention has a simple structure and is easy to install and use. It can be completed in just a few simple steps without requiring a lot of labor. It can adjust the horizontality, height and displacement along the axis of the welded steel pipe within a certain range. It has high installation and adjustment efficiency, is beneficial to the steel pipe welding construction, has significant effects, and can be folded and carried, is highly portable, and has high economy and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of a self-leveling steel pipe welding auxiliary support;

[0022] Figure 2 This is the front view of the self-leveling steel pipe welding auxiliary bracket;

[0023] Figure 3 This is the right view of the self-leveling steel pipe welding auxiliary bracket;

[0024] Figure 4 It is a top view of the self-leveling steel pipe welding auxiliary bracket.

[0025] Among them: 1-support frame, 11-horizontal rod, 12-adjustable vertical rod, 13-support steel plate, 14 diagonal brace, 15-connecting rod, 2-servo motor, 3-turbine screw lift, 31-lifting screw, 32-ball head, 33-turbine, 4-chassis, 5-steel plate base, 6-hoop, 61-stainless steel belt, 62-buckle, 7-tilt sensor, M is a steel pipe. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with specific implementation methods. The specific implementation methods are further descriptions of the principles of the present invention and do not limit the present invention in any way. Technologies that are the same or similar to the present invention do not exceed the scope of protection of the present invention.

[0027] Combined with the attached pictures.

[0028] As shown in the figure, the self-leveling steel pipe welding auxiliary bracket of the present invention includes a support frame 1, a servo motor 2, a turbine screw lift 3, a chassis 4, a steel plate base 5, a clamp 6 and an inclination sensor 7.

[0029] The support frame 1 is provided with a horizontal rod 11, an adjustable vertical rod 12, a supporting steel plate 13, an oblique brace 14, and a connecting rod 15. The horizontal rod 11 is rotatably connected to one end of the adjustable vertical rod 12, and the bottom end of the adjustable vertical rod 12 is detachably connected to the supporting steel plate 13. One end of the oblique brace 14 is installed on the upper part of the adjustable vertical rod 12, and the other end is connected to the horizontal rod 11 to form a stable supporting triangle.

[0030] Two horizontal rods 11, adjustable vertical rods 12, diagonal braces 14, and connecting rods 15 are symmetrically arranged in parallel. The cross-section of each horizontal rod 11, adjustable vertical rod 12, diagonal brace 14, and connecting rod 15 is rectangular. A mounting platform is provided between the two horizontal rods 11, and a detachable supporting steel plate 13 is provided at the bottom of the adjustable vertical rod.

[0031] The servo motor 2 is mounted on the mounting platform, and its rotating shaft is fixedly connected to the turbine 32, and is connected to the inclination sensor 7 through a signal line. The angle information and output signal measured by the inclination sensor 7 control the motor to rotate and drive the adjusting screw to move up and down. The servo motor 2 adopts an electromagnetic brake motor.

[0032] The turbine screw lift 3 comprises a lifting screw 31 , a ball head 32 and a turbine 33 . The turbine screw lift 3 is installed on a mounting platform. The lifting screw 31 passes through the center of the turbine and then passes through the mounting platform and is fixedly connected to the lower ball head 32 .

[0033] A spherical groove is provided on the top of the chassis 4, which is nested and connected with the ball head 32; an I-shaped slide rail is provided at the bottom of the chassis 4, which is nested and combined with the slide groove on the top surface of the steel plate base 5. One end of the slide groove on the top surface of the steel plate base 5 is closed, and the other end is provided with a removable limit screw.

[0034] Hoops 6 are provided on both sides of the steel plate base 5, and the hoop 6 is rotatably connected to the two sides of the steel plate base; a stainless steel belt 61 is provided at the lower end of the left hoop 6, and a buckle 62 is provided at the lower end of the right hoop 6.

[0035] As shown in the figure, the support frame 1 in this example can be made of forged steel or steel, and the surface is treated with anti-corrosion, with high strength and hardness. The overall height of the support frame 1 is 60 to 100 cm, and the length of the lifting screw 31 is 100 cm; the electromagnetic brake motor adopts a servo motor 2, which has high-precision control capability, and is provided with a disc brake at the non-axial extension end of the motor. When the power is suddenly cut off, the brake presses the brake disc and the motor stops running immediately, which can effectively prevent the welded steel pipe M from suddenly falling and injuring people; the clamp 6 is rotatably connected to the steel plate base 5, which can realize the locking and fixation of steel pipes M with different diameters within a certain range, effectively improving the adaptability of this bracket.

[0036] The construction method of the self-leveling steel pipe welding auxiliary support of the present invention comprises the following steps:

[0037] 1) After the bracket is transported to the site, it is opened and each component is installed, and then the inclination sensor 7 is calibrated;

[0038] 2) After the steel pipe M is transported to the construction site, a set of brackets is placed at both ends of the two sections of the steel pipe M that need to be butt-jointed. When placing, a set of support brackets 1 with an inclination sensor 7 is placed at the end close to the steel pipe M that needs to be welded, and a set of support brackets 1 without an inclination sensor 7 is placed at the other end away from the welding joint;

[0039] 3) When preparing for welding, start the electromagnetic brake motor, adjust the height of the clamp 6 to the top of the steel pipe M, pass the stainless steel belt 61 at the lower end of the clamp 6 through the bottom of the steel pipe M, insert it into the buckle 62 and lock it;

[0040] 4) After all the clamps 6 are locked and fixed, start the electromagnetic brake motor to lift the steel pipe M 20 to 30 cm off the ground, and then start the inclination sensor 7 to control one end of the steel pipe M to automatically rise and fall to adjust the horizontality.

[0041] 5) After the horizontal adjustment is completed, align the two steel pipes M. If the heights are different due to the influence of the foundation surface, start the electromagnetic brake motors on the support frames 1 at both ends of one section of the steel pipe M to adjust the lifting until the interface heights of the two sections of the steel pipe M are consistent.

[0042] 6) Slide the steel plate base 5 along the axial direction of the steel pipe M to adjust the gap between the two steel pipes to the required width for welding, and start welding.

[0043] 7) After the welding is completed and the weld stress is released, the motor is started, the steel pipe M is lowered to the installation base groove or other support body, the support frame 1 is removed, and the next section of the steel pipe M is welded.

Claims

1. A self-leveling steel pipe welding auxiliary bracket, characterized in that: It includes a front and a rear set of parallel support frames, each set of support frames is provided with an electric screw lifting device and a locking and fixing device; both ends of the pre-welded steel pipe are respectively suspended and fixed by the locking and fixing devices of the front and rear support frames, and the front end of the pre-welded steel pipe is matched with another pre-welded steel pipe group; The supporting frame is a steel frame of portal structure; The electric screw lifting device is composed of a servo motor fixed to the middle of the crossbeam of the support frame portal structure and a worm screw lifting mechanism driven by the servo motor. The bottom of the lifting screw of the worm screw lifting mechanism is a ball head, which is embedded in the groove on the top surface of the chassis of the locking and fixing device and is rotatably connected to the chassis. The locking and fixing device includes a chassis, a steel plate base and a clamp; A slide groove is provided on the top surface of the steel plate base, and a slide rail is provided on the bottom of the chassis. The chassis slide rail is embedded in the slide groove on the top surface of the steel plate base and is slidably connected to the steel plate base for horizontal sliding adjustment of the steel pipe; multiple groups of clamps for fixing and hanging welded steel pipes are arranged on both sides of the steel plate base, and each group of clamps is symmetrically arranged and rotatably connected and fixed to the steel plate base through a rotating shaft; An inclination sensor is arranged at the front end of the steel plate base of the first group of support frames; a controller is connected with the inclination sensor and a servo motor control.

2. The self-leveling steel pipe welding auxiliary bracket according to claim 1 is characterized in that: The support frame is composed of a horizontal rod, an adjustable vertical rod and an oblique brace to form a door-shaped structure. The horizontal rod is hinged to the adjustable vertical rod and forms a stable supporting door-shaped structure through the oblique brace. Two groups of door-shaped beams are arranged in parallel and connected and fixed by connecting rods to form a support frame. The lower end of the vertical rod of the door-shaped structure is height-adjustable through a telescopic joint, and a detachable supporting steel plate is provided at the bottom end.

3. The self-leveling steel pipe welding auxiliary bracket according to claim 2 is characterized in that: One side of the clamp is a stainless steel arc clamp, and the lower end of the other side is equipped with a buckle. The stainless steel arc clamp passes through the bottom of the steel pipe and is inserted into the buckle to tighten and fix the hanging steel pipe.

4. The self-leveling steel pipe welding auxiliary bracket according to claim 2 is characterized in that: The inclination sensor adopts a single-axis inclination sensor with analog voltage output and a small range accuracy of 0.005°, and is used to measure the angle between the axis of the steel pipe locked and fixed by the clamp and the horizontal line.

5. The self-leveling steel pipe welding auxiliary support according to claim 2 is characterized in that: The servo motor is an electromagnetic brake motor.

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