A portable pipe alignment device

Abstract

The utility model relates to pipeline welding technical field, concretely is a kind of portable pipeline butt joint device, including clamp jaw I, clamp jaw II, connecting plate and clamping screw I;The connecting plate is symmetrically arranged before and after, and the left and right ends between the front and rear two connecting plates are all fixed by pin shaft;The clamp jaw I is symmetrically arranged left and right, and the bottom end of left and right two clamp jaw I is respectively corresponding with the rotation connection of left and right two pin shafts;The clamp jaw II is set in the middle part outside of two clamp jaw I;The upper end inboard of clamp jaw I is all set as the arc surface corresponding with pipeline;The middle part upper of clamp jaw II is provided with the arc clamping seat corresponding with pipeline;Clamping screw I passes through the middle part of connecting plate from bottom to top and is in abutment with the middle part lower of clamp jaw II, and clamping screw I is threadedly connected with the middle part of connecting plate.The utility model passes through nut, screw rod and other components, the opening and closing degree of adjustable clamp jaw and the position of pipeline, to realize the promotion of pipe mouth butt joint precision, guarantee welding quality and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of pipe welding technology, and in particular to a portable pipe alignment device. Background Technology

[0002] In industries such as steel and chemicals, pipe alignment tools are key equipment in pipeline construction and maintenance.

[0003] In the early stages of pipeline construction, pipe connections primarily rely on manual alignment of pipe ends. This method is inefficient and makes it difficult to guarantee the accuracy of pipe alignment. Manual alignment cannot achieve the high-precision concentricity and misalignment requirements needed for welding, resulting in inconsistent weld quality, increased susceptibility to welding defects, and a higher risk of pipeline leaks.

[0004] As a crucial output device in the manufacturing industry, pipelines face increasingly stringent quality requirements due to the continuous expansion of pipeline construction, particularly in industries such as steel, oil, natural gas, and chemicals, where the application of large-diameter, thick-walled pipelines is growing. To meet the demands for high-quality pipeline connections, ensure the precision of pipe joint connections, and enable pipeline welding to be performed under ideal conditions, thereby improving welding quality and construction efficiency, a portable pipeline alignment device is proposed to address the problems encountered during pipeline alignment. Utility Model Content

[0005] To address the aforementioned problems, the purpose of this utility model is to provide a portable pipe alignment device that can effectively improve the accuracy of pipe alignment, lay the foundation for high-quality welding, and reduce welding defects caused by alignment deviations.

[0006] The technical solution adopted in this utility model is as follows: This utility model discloses a portable pipe alignment device, comprising a clamp I, a clamp II, a connecting plate, and a clamping screw I. The connecting plate is symmetrically arranged front and back, and the left and right ends of the two connecting plates are fixedly connected by pins. The clamp I is symmetrically arranged left and right, and the bottom ends of the two clamps I are respectively rotatably connected to the left and right pins. The clamp II is sleeved on the outer side of the middle of the two clamps I. The inner side of the upper end of the clamp I is set as an arc-shaped surface corresponding to the pipe. An arc-shaped clamping seat corresponding to the pipe is provided above the middle of the clamp II. The clamping screw I passes through the middle of the connecting plate from bottom to top and abuts against the lower middle of the clamp II, and the clamping screw I is threadedly connected to the middle of the connecting plate.

[0007] Furthermore, the upper end of each of the grippers I is configured with a two-stage stepped structure, and the inner end face of the first stage located on the inner side is configured as an arc-shaped surface corresponding to the pipe, while the second stage located on the outer side extends forward a certain distance; a protrusion is provided in the middle of the front side of each gripper II; both the protrusion and the second stage structure are connected to radial clamping screws II by threads from the outside to the inside.

[0008] Furthermore, the upper middle region of the gripper I is configured as an arc-shaped structure corresponding to the pipe.

[0009] Furthermore, the gripper II is composed of two clamping plates, front and rear; the left and right ends of the two clamping plates are fixedly connected by a pin, and the middle parts are connected by a fixing block; the bottom of the fixing block abuts against the top of the clamping screw I.

[0010] Furthermore, the outer end face of the second-stage stepped structure and the protrusion is locked to the clamping screw II by a nut.

[0011] Furthermore, a rotating handle is provided at the bottom end of the clamping screw I.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. Saves time and effort: Using the matching device proposed in this utility model for pipe docking can significantly save pipe assembly time and reduce the physical burden on operators. One person can operate independently to complete the pipe matching task.

[0013] 2. Improved Welding Quality: The design of this device fully considers the requirements of pipeline welding processes. The pipeline alignment device effectively solves problems such as inconsistent pipe end angles and large misalignments that occurred during previous pipeline alignment processes. It significantly improves the precision of pipeline welding assembly, providing strong support for enhancing welding quality.

[0014] 3. Portable and easy to operate: This device is lightweight and can be easily carried to different work sites, saving space and increasing work efficiency. Furthermore, it is made from readily available materials, with few technical difficulties, making it highly practical. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a portable pipe alignment device proposed in this utility model.

[0016] In the attached drawings, the following reference numerals are used: 1-clamping claw I; 2-clamping claw II; 3-connecting plate; 4-clamping screw I; 5-arc-shaped clamping seat; 6-two-stage stepped structure; 61-first-stage step; 62-second-stage step; 7-protrusion; 8-clamping screw II; 9-rotating handle; 10-nut. Detailed Implementation

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] It should be noted that in the description of this utility model, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not mean that the device or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0019] See appendix Figure 1 The present invention proposes a portable pipe fitting device, which includes two grippers I1, grippers II2, two connecting plates 3 and clamping screws I4.

[0020] The two connecting plates 3 are symmetrically arranged with a certain distance between them, and the left and right ends of the two connecting plates 3 are fixedly connected by pins; the two grippers I1 are symmetrically arranged with a certain distance between them, and the bottom ends of the two grippers I1 are respectively rotatably connected to the pins between the left and right ends of the two connecting plates 3; in this embodiment, the upper middle part of the gripper I1 is set as an arc-shaped structure corresponding to the pipe.

[0021] The gripper II2 is composed of two horizontal clamping plates, front and back; the left and right ends of the two horizontal clamping plates are fixedly connected by pins, and the middle parts of the two horizontal clamping plates are fixedly connected by a fixing block; the gripper II2 is sleeved between the outer middle parts of the two grippers I1.

[0022] The inner side of the upper end of each of the grippers I1 is set as an arc-shaped surface corresponding to the pipe; an arc-shaped clamping seat 5 corresponding to the pipe is provided above the middle part of the gripper II2; and the arc-shaped clamping seat 5 and the inner arc-shaped surfaces of the upper ends of the two grippers I1 are all on the same plane. A threaded tube is fixed between the middle parts of the two connecting plates 3; the clamping screw I4 passes through the threaded tube in the middle of the connecting plate 3 from bottom to top and abuts against the lower part of the fixing block in the middle of the jaw II2. The clamping screw I4 is threadedly connected to the threaded tube, and a rotating handle 9 is provided at the bottom end of the clamping screw I4.

[0023] In this embodiment, the upper end of each gripper I1 is provided with a two-stage stepped structure 6, and the inner end face of the first-stage step 61 located on the inner side is set as an arc-shaped surface corresponding to the pipe, while the second-stage step 62 located on the outer side extends forward by a certain distance; a protrusion 7 is provided in the middle of the front side of the gripper II2; both the protrusion 7 and the second-stage step 62 are connected to radial clamping screws II8 by threads from the outside to the inside. All three clamping screws II8 are on the same plane. The outer end faces of the second-stage step 62 and the protrusion 7 are locked to the clamping screws II8 by nuts 10.

[0024] The two clamping jaws I1 are designed in an arc shape to better fit the outer surface of the pipe, evenly distribute the clamping force, and prevent pipe deformation and clamp detachment. The shape and size of the clamping jaws are designed according to the diameter of the pipe. The upper end of the clamping jaw I1 has a two-stage stepped structure 6, which allows for adjustment space at the other end after the first stage 61 clamps one end of the pipe. By rotating the clamping screw I4, the clamping jaw II2 rises. Under the action of the clamping jaw II, the two clamping jaws I1 begin to retract until their arc-shaped surfaces and arc-shaped clamping seats 5 clamp the pipe. At this time, the arc-shaped surfaces on the inner sides of the upper ends of the two clamping jaws I1 and the arc-shaped clamping seats 5 are on the same circumference and are radially aligned with the pipe surface. The second stage 62 uses a combination of clamping screw II8 and nut 10. By adjusting the extension length of the clamping screw II8, the position and angle of the pipe can be finely adjusted to make the two ends of the pipe flush; the concentricity of the pipe can be adjusted to ensure that the center lines of the two pipes are aligned and fixed.

[0025] The working principle of this device is as follows: Before pipe alignment, first adjust the alignment device to its maximum opening by turning the handle 9 counterclockwise, with the handle facing down. Place the first step 61 of the device on one end of the pipe, with the pipe end face extending 5-10mm beyond the first step. Then, turn the handle 9 clockwise to raise the jaw 2, bringing the arc-shaped clamping seat 5 into contact with the pipe end face until it is locked in place. Turn the clamping screw 8 counterclockwise so that the screw end face on the second step 62 is larger than the pipe diameter. The other pipe end face enters the alignment device along the second step. Using a wrench, rotate the screw inside the second step 62 to press against the pipe end face, thereby adjusting the vertical and horizontal positions of the two pipe openings until they are aligned. Then, spot weld them in place. After alignment, turn the handle 9 counterclockwise to lower the jaw 2 to its lowest position. The jaw 11 can then unfold outwards, allowing the alignment device to be removed from the pipe.

[0026] Matters not covered in this utility model are common knowledge.

[0027] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A portable pipe alignment device, characterized in that: The device includes gripper I, gripper II, a connecting plate, and clamping screw I. The connecting plate is symmetrically arranged front and back, and the left and right ends of the two connecting plates are fixedly connected by pins. The gripper I is symmetrically arranged left and right, and the bottom ends of the two grippers I are respectively rotatably connected to the left and right pins. The gripper II is sleeved on the outer side of the middle of the two grippers I. The inner side of the upper end of the gripper I is set as an arc-shaped surface corresponding to the pipe. An arc-shaped clamping seat corresponding to the pipe is provided above the middle of the gripper II. The clamping screw I passes through the middle of the connecting plate from bottom to top and abuts against the lower middle of the gripper II, and the clamping screw I is threadedly connected to the middle of the connecting plate. The upper end of each gripper I is configured with a two-stage stepped structure, and the inner end face of the first stage on the inner side is configured as an arc-shaped surface corresponding to the pipe, while the second stage on the outer side extends forward a certain distance; a protrusion is provided in the middle of the front side of each gripper II; both the protrusion and the second stage structure are connected to radial clamping screws II by threads from the outside to the inside.

2. The portable pipe alignment device according to claim 1, characterized in that: The upper middle region of the gripper I is configured as an arc-shaped structure corresponding to the pipe.

3. The portable pipe alignment device according to claim 1, characterized in that: The gripper II consists of two clamping plates, one at the front and one at the back. The two clamping plates are fixedly connected at their left and right ends by a pin and connected at their middle parts by a fixing block. The bottom of the fixing block abuts against the top of the clamping screw I.

4. A portable pipe alignment device according to claim 1, characterized in that: The outer end face of the second-stage stepped structure and the protrusion is locked to the clamping screw II by a nut.

5. A portable pipe alignment device according to claim 1, characterized in that: The bottom end of the clamping screw I is provided with a rotating handle.

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