Fixing device for flange welding

Abstract

The utility model discloses a fixing device for flange welding, which belongs to the technical field of flange welding and comprises a base, a flange clamping unit and a pipeline clamping unit, the flange clamping unit comprises a lifting component and a fixing component, and an electric rotating disc is arranged between the lifting component and the fixing component. The fixing assembly comprises an air cylinder set and a positioning pin used for being clamped in a flange hole, and the positioning pin is connected to the air cylinder set. The pipeline clamping unit comprises a rotating fastening assembly and a rotating supporting assembly, the rotating fastening assembly comprises a gear and a fastening ring, a circle of teeth are arranged on the outer wall of the fastening ring, the teeth are meshed with the gear, and the interior of the gear is connected with the driving assembly. The flange clamping unit and the pipeline clamping unit are arranged, the electric rotating disc and the motor are used for driving the transmission shaft to achieve synchronous rotation of a flange and a pipeline, and it is guaranteed that welding work is completed smoothly; and meanwhile, the two second air cylinders are arranged to control and adjust the position of the positioning pin, so that the flanges with different sizes are fixed.

Description

Technical Field

[0001] This utility model relates to the field of flange welding technology, and in particular to a fixing device for flange welding. Background Technology

[0002] A flange, also called a flange plate or flange, is a part used to connect shafts, for connecting pipe ends; flanges are also used on equipment inlets and outlets to connect two pieces of equipment, such as speed reducer flanges. A flange connection or flange joint refers to a detachable connection consisting of a flange, gasket, and bolts connected together as a combined sealing structure.

[0003] Pipe flanges refer to flanges used for piping in piping systems, and on equipment, they refer to the inlet and outlet flanges. Flanges have holes, and bolts are used to tightly connect two flanges. A gasket is used for sealing between flanges. Flanges are classified into threaded flanges, welded flanges, and clamp flanges.

[0004] In daily welding work, there are often situations where pipes and flanges are welded and fixed together. Existing fixing devices cannot properly fix flanges of different sizes; and there are some inconveniences when welding flanges and pipes, such as the inability to achieve synchronous rotation of the flange and pipe.

[0005] Based on the above problems, a fixing device for flange welding is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a fixing device for flange welding to solve the problems in the prior art.

[0007] To achieve the above objectives, this utility model provides a fixing device for flange welding, including a base and a flange clamping unit and a pipe clamping unit disposed on the base. The flange clamping unit includes a lifting assembly and a fixing assembly connected to the lifting assembly. The lifting assembly and the fixing assembly are connected by an electric rotating disk. The fixing assembly includes a cylinder assembly connected to the electric rotating disk and a positioning pin for engaging in the flange hole. The positioning pin is connected to the cylinder assembly.

[0008] The pipe clamping unit includes a rotating fastening assembly for clamping the pipe and a rotating support assembly disposed on the right side of the rotating fastening assembly. The rotating fastening assembly includes a gear and a fastening ring meshing with the gear. A ring groove is provided on the side wall of the fastening ring, and a ring of teeth is provided on the outer wall of the fastening ring. The teeth mesh with the gear, and the interior of the gear is connected to the drive assembly.

[0009] Preferably, the lifting assembly includes a support column and a lead screw disposed in the inner cavity of the support column. The lower end of the lead screw is rotatably connected to a lead screw seat, and the upper end of the lead screw is connected to a knob, which is disposed outside the support column.

[0010] Preferably, the lead screw is provided with a movable block, one side of which is slidably connected to a slide rail, the slide rail being disposed on the inner wall of the support column, the other side of which is connected to a support block, and the support block extending out of the right side of the support column and slotted to connect with the fixed end of the electric rotary disk.

[0011] Preferably, the cylinder assembly includes a first cylinder, a connecting block, and two second cylinders. The fixed end of the first cylinder is connected to the rotating end of the electric rotary disk, and the free end of the first cylinder is connected to the connecting block. The upper and lower sides of the connecting block are respectively connected to the fixed ends of the two second cylinders. The free end of the second cylinder is connected to the positioning pin through a positioning seat. The positioning pin and the positioning seat are detachably connected to realize the replacement of the positioning pin.

[0012] Preferably, the rotating fastening assembly is mounted on the rotating support, and the driving assembly includes a motor and a transmission shaft. The transmission shaft meshes internally with a gear and is rotatably connected to a shaft bracket. One side of the transmission shaft is connected to the motor. Two L-shaped slide rods are mounted on the shaft bracket. One end of the slide rod is fixed to the shaft bracket, and the other end slides against the annular groove of the fastening ring.

[0013] Preferably, the fastening ring is provided with a plurality of fasteners on both sides of the teeth.

[0014] Preferably, the rotary support assembly includes a rotary seat and a semi-circular groove disposed on the rotary seat.

[0015] Therefore, the flange welding fixing device of the present invention, which adopts the above-described structure, has the following beneficial effects:

[0016] (1) The device is equipped with a flange clamping unit. The flange position is adjusted by the lifting assembly. The position of the positioning pin is adjusted by two second cylinders, thereby clamping flanges of different sizes. The first cylinder is also provided to control the distance between the flange and the pipe, ensuring the accuracy of welding.

[0017] (2) This device is equipped with a rotating fastening assembly for the pipeline. By clamping the front end of the pipeline in the fastening ring, the fasteners on the fastening ring can be adjusted to fix pipelines of different sizes. At the same time, teeth are provided on the outer wall of the fastening ring, which mesh with the gear at the lower end. The gear is driven by a motor and a transmission shaft to rotate, which in turn drives the teeth to rotate, thereby realizing the rotation of the pipeline. By setting an L-shaped slide rod on the shaft frame, one end slides against the annular groove on the fastening ring to limit the position of the fastening ring. Meanwhile, the rear end of the pipeline is placed in the semi-circular slide groove of the rotating support assembly, which provides sliding support for the pipeline. In addition, an electric rotating disk is set for the clamping assembly of the flange. By setting the rotation speed of the electric rotating disk and the rotation speed of the motor, the flange and the pipeline can rotate synchronously.

[0018] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0020] Figure 2 This is a cross-sectional view of the fastening ring according to an embodiment of the present utility model;

[0021] Figure label:

[0022] 1. Base; 2. Lifting assembly; 21. Support column; 22. Lead screw; 23. Knob; 24. Moving block; 25. Slide rail; 26. Support block; 3. Fixing assembly; 31. Positioning pin; 32. First cylinder; 33. Connecting block; 34. Second cylinder; 35. Positioning seat; 4. Electric rotating disk; 5. Rotation fastening assembly; 51. Rotation support; 52. Gear; 53. Fastening ring; 54. Tooth; 55. Motor; 56. Drive shaft; 57. Fastener; 6. Rotation support assembly; 61. Rotating seat; 62. Semi-circular slide groove. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0024] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] Example

[0026] like Figure 1 , Figure 2 As shown, this utility model provides a fixing device for flange welding, including a base 1 and a flange clamping unit and a pipe clamping unit disposed on the base 1. Through the cooperation of the flange clamping unit and the pipe clamping unit, the flange and the pipe are clamped and rotated synchronously to ensure the smooth progress of the welding work.

[0027] The flange clamping unit includes a lifting assembly 2 and a fixing assembly 3 connected to the lifting assembly 2. The lifting assembly 2 and the fixing assembly 3 are connected by an electric rotary disk 4. The lifting assembly 2 includes a support column 21 and a lead screw 22 disposed in the inner cavity of the support column 21. The support column 21 has an inner cavity and a slot on its right side, which communicates with the inner cavity. The lower end of the lead screw 22 is rotatably connected to a lead screw seat, and the upper end of the lead screw 22 is connected to a knob 23. The knob 23 is disposed outside the support column 21, and the rotation of the lead screw 22 is controlled by the knob 23.

[0028] A movable block 24 is provided on the lead screw 22. One side of the movable block 24 is slidably connected to the slide rail 25, which is located on the inner wall of the inner cavity of the support column 21. The other side of the movable block 24 is connected to the support block 26. The support block 26 extends out of the right side slot of the support column 21 and is connected to the fixed end of the electric rotary disk 4. When adjusting the position, the knob 23 is rotated to drive the lead screw 22 to rotate, thereby realizing the up and down movement of the movable block 24.

[0029] The fixing assembly 3 includes a cylinder group connected to the electric rotary disk 4 and a positioning pin 31 for locking onto the flange hole. Multiple positioning pins 31 are configured and connected to the cylinder group. The cylinder group includes a first cylinder 32, a connecting block 33, and two symmetrically arranged second cylinders 34. The fixed end of the first cylinder 32 is connected to the rotating end of the electric rotary disk 4, and the free end of the first cylinder 32 is connected to the connecting block 33. The extension and retraction of the first cylinder 32 adjusts the distance between the flange and the pipe locked by the front positioning pin 31, ensuring smooth welding. The upper and lower sides of the connecting block 33 are connected to the fixed ends of the two second cylinders 34, respectively. The free ends of the second cylinders 34 are connected to the positioning pins 31 via positioning seats 35. The positioning pins 31 and positioning seats 35 are detachably connected, allowing for replacement of the positioning pins 31. When locking flanges of different sizes, the second cylinders 34 are activated to control their extension and retraction, thus locking flanges of different sizes.

[0030] The pipe clamping unit includes a rotating fastening assembly 5 for clamping the pipe and a rotating support assembly 6 located on the right side of the rotating fastening assembly 5. The rotating fastening assembly 5 and the rotating support assembly 6 work together to fix and support the pipe, ensuring the stable rotation of the pipe during the welding process and ensuring the quality of the welding.

[0031] The rotating fastening assembly 5 is mounted on the rotating support 51. The rotating fastening assembly 5 includes a gear 52 and a fastening ring 53 that meshes with the gear 52. A ring groove is provided on the side wall of the fastening ring. The groove is a slidable groove. A ring of teeth 54 is provided on the outer wall of the fastening ring 53. The teeth 54 mesh with the gear 52. The inside of the gear 52 is connected to the drive assembly. The drive assembly drives the gear 52 to rotate, thereby driving the fastening ring 53 to rotate.

[0032] The drive assembly includes a motor 55 and a drive shaft 56. The drive shaft 56 meshes with the inner hole of the gear 52 and is rotatably connected to a shaft bracket. Two L-shaped sliding rods are mounted on the shaft bracket; one end of each rod is fixed to the shaft bracket, and the other end slides against the annular groove of the fastening ring 53, thus limiting the position of the fastening ring 53. The shaft bracket is mounted on a rotating support 51. One side of the drive shaft 56 is connected to the motor 55, which is mounted on the rotating support 51 via a motor mount. Multiple fasteners 57 are located on both sides of the teeth 54 of the fastening ring 53. The fasteners 57 are conventionally configured, for example, a screw connecting to a limiting plate. The screw is rotatably connected to the side wall of the fastening ring 53, and rotating the screw limits the position of the pipe by the limiting plate.

[0033] The rotating support assembly 6 includes a rotating seat 61 and a semi-circular groove 62 disposed on the rotating seat 61. The pipe is slidably locked in the semi-circular groove 62. During the rotation of the pipe, the front end of the pipe is fixed inside the fastening ring 53, and the rear end is placed in the semi-circular groove 62. During the meshing of the gear 52 and the teeth 54, the semi-circular groove 62 at the rear end plays a limiting role for the pipe. Together with the sliding rod at the front end, it plays a limiting role for the fastening ring 53, so that the fastening ring 53 will not rotate with the inner hole of the gear 52 as the center due to the meshing action, but will rotate around the central axis of the pipe itself.

[0034] In the above structure, the cylinder group, motor 55 and electric rotary table 4 are all controlled by a controller (a common setting in this field) to adjust the flange speed, pipeline speed and the distance between the flange and the pipeline.

[0035] Therefore, the present invention provides a flange welding fixing device with the above-mentioned structure. By setting up a flange clamping unit and a pipe clamping unit, the flange and the pipe are rotated synchronously by using an electric rotary disk and a motor-driven transmission shaft, ensuring the smooth completion of the welding work. At the same time, by setting up two second cylinders, the position of the positioning pin is controlled and adjusted to fix flanges of different sizes.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A fixing device for flange welding, characterized in that: it comprises a base and a flange clamping unit and a pipeline clamping unit arranged on the base, the flange clamping unit comprises a lifting assembly and a fixing assembly connected to the lifting assembly, the lifting assembly and the fixing assembly are connected through an electric rotary disc, the fixing assembly comprises a cylinder group connected with the electric rotary disc and a positioning pin used for clamping on a flange hole, the positioning pin is connected to the cylinder group; the pipeline clamping unit comprises a rotating fastening assembly used for clamping a pipeline, a rotary support assembly arranged on the right side of the rotating fastening assembly, the rotating fastening assembly comprises a gear and a fastening ring engaged with the gear, a circular annular groove is arranged on the side wall of the fastening ring, a plurality of teeth are arranged on the outer wall of the fastening ring, the teeth are engaged with the gear, the inside of the gear is connected with a driving assembly.

2. The fixing device for welding of flanges according to claim 1, characterized in that: the lifting assembly comprises a support column and a lead screw arranged in the inner cavity of the support column, the lower end of the lead screw is rotatably connected to a lead screw seat, the upper end of the lead screw is connected with a knob, the knob is arranged on the outside of the support column.

3. A fixture for welding flanges according to claim 2, characterized in that: a moving block is arranged on the lead screw, one side of the moving block is slidably connected to a slide rail, the slide rail is arranged on the inner wall of the support column, the other side of the moving block is connected with a supporting block, the supporting block extends out of the right slot of the support column and is connected with the fixed end of the electric rotary disc.

4. The fixture of claim 1 wherein: the cylinder group comprises a first cylinder, a connecting block and two second cylinders, the fixed end of the first cylinder is connected with the rotating end of the electric rotary disc, the free end of the first cylinder is connected with the connecting block, the upper and lower sides of the connecting block are respectively connected with the fixed ends of the two second cylinders, the free ends of the second cylinders are connected with the positioning pin through a positioning seat.

5. The fixture of claim 1 wherein: the rotating fastening assembly is arranged on a rotating support, the driving assembly comprises a motor and a transmission shaft, the transmission shaft is engaged with the inside of the gear, the transmission shaft is rotatably connected to a shaft support, one side of the transmission shaft is connected with the motor; two L-shaped slide rods are arranged on the shaft support, one end of the L-shaped slide rod is fixed on the shaft support, the other end of the L-shaped slide rod is slidably abutted in the annular groove of the fastening ring.

6. The fixture of claim 1 wherein: a plurality of fasteners are arranged on both sides of the teeth of the fastening ring.

7. The fixture of claim 1 wherein: the rotary support assembly comprises a rotary seat and a semicircular slide groove arranged on the rotary seat.

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