Pipeline butt joint positioning and fixing device

Abstract

The utility model belongs to the technical field of workpiece positioning, and particularly relates to a pipeline butt joint positioning and fixing device which comprises a clamp body used for embracing the periphery of a pipeline, the clamp body comprises a first arc-shaped hoop part and a second arc-shaped hoop part which are arranged at intervals in the axial direction of the pipeline, and the first arc-shaped hoop part is used for embracing a section of pipeline to be in butt joint; the second arc-shaped hoop part is used for embracing the other section of pipeline to be butted, the first arc-shaped hoop part and the second arc-shaped hoop part are connected and fixed in the axial direction through a plurality of full-thread bolts, and a plurality of first connecting bases are evenly fixed to the peripheral wall of the first arc-shaped hoop part in the circumferential direction; and a plurality of second connecting seats in one-to-one correspondence with the first connecting seats are uniformly fixed on the peripheral wall of the second arc-shaped hoop part along the circumferential direction. The device can synchronously restrain and position two sections of pipelines, and is quick to mount, simple and convenient to operate and high in construction efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of workpiece positioning technology, specifically relating to a pipe docking positioning and fixing device. Background Technology

[0002] In municipal engineering, building water supply and drainage, and industrial pipeline installation, it is often necessary to connect two or more sections of pipeline. Ensuring precise alignment and stable fixation of the pipe joints is crucial for guaranteeing connection quality, sealing, and overall pipeline safety. Currently, traditional pipeline connection methods rely heavily on manual support and alignment by multiple workers. This traditional approach has significant drawbacks: First, manual support is difficult to maintain consistently, and the pipeline is prone to shifting, sinking, or rotating during construction, leading to misalignment and non-concentricity. Thermal deformation during welding further exacerbates this shift, severely affecting the straightness and concentricity of the connection, creating potential quality issues. Second, large-diameter pipelines are heavy and bulky, making multi-person operation not only labor-intensive and costly, but also cumbersome and time-consuming, resulting in low construction efficiency. Furthermore, in high-temperature, spark-producing, or toxic gas-producing environments such as welding and cutting, personnel must support the pipeline at close range, posing a significant threat to their personal safety and posing potential risks of burns and electric shock.

[0003] Chinese patent CN209614728U discloses a pipe docking positioning device, including a clamp, a base, limiting crossbars, and a tightening mechanism. The clamp is a circular clamp component; the base is fixedly connected to the lower circumference of the circular clamp structure; several limiting crossbars are fixedly connected to the axial direction of the circular clamp structure; the long side of the limiting crossbars is parallel to the central axis of the clamp; and the tightening mechanism is fixedly connected to the end of the limiting crossbars away from the clamp. This patent has a reasonable structure, is easy to use, and has high stability. However, the alignment accuracy of this patent depends entirely on the operator's simultaneous adjustment of multiple tightening mechanisms. If any tightening rod moves asynchronously, it can easily cause pipe misalignment, making it difficult to control the alignment accuracy. In actual use, one end must be precisely fixed first, and then multiple people must work together to repeatedly and synchronously adjust the tightening rods at multiple points on the other end, requiring continuous measurement and correction. This is not only inefficient but also places high demands on the professional skills of the operators. Utility Model Content

[0004] The purpose of this invention is to provide a pipe docking positioning and fixing device that can achieve synchronous constraint and positioning of two pipe sections, avoid the shaking and displacement problems caused by manual support, and is quick to install, easy to operate, and has high construction efficiency.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A pipe docking positioning and fixing device includes a clamp body for clamping the outer periphery of a pipe. The clamp body includes a first arc-shaped clamping part and a second arc-shaped clamping part spaced apart along the axial direction of the pipe. The first arc-shaped clamping part is used to clamp one section of the pipe to be docked, and the second arc-shaped clamping part is used to clamp another section of the pipe to be docked. The first arc-shaped clamping part and the second arc-shaped clamping part are axially connected and fixed by a plurality of fully threaded bolts. A plurality of first connecting seats are uniformly fixed along the circumferential direction on the outer peripheral wall of the first arc-shaped clamping part. Each first connecting seat has a first axial through hole. A plurality of second connecting seats corresponding one-to-one with the first connecting seats are uniformly fixed along the circumferential direction on the outer peripheral wall of the second arc-shaped clamping part. Each second connecting seat has a second axial through hole. Each fully threaded bolt passes through a pair of corresponding first axial through holes and second axial through holes.

[0007] Furthermore, the first arc-shaped clamp includes two first semi-circular clamps that are mated together. Both ends of the two first semi-circular clamps extend radially outward to form first connecting ears. The two first semi-circular clamps are connected by fastening bolts that pass through their first connecting ears.

[0008] Furthermore, the second arc-shaped clamp includes two semi-circular clamps that are mated together. Both ends of the two semi-circular clamps extend radially outward to form second connecting ears. The two semi-circular clamps are connected by fastening bolts that pass through their second connecting ears.

[0009] Furthermore, several first connecting seats are welded to the outer peripheral wall of the first arc-shaped clamp.

[0010] Furthermore, the first axial through hole is an internal threaded hole on the first connecting seat, and the full threaded bolt is threadedly engaged with the internal threaded hole on the first connecting seat.

[0011] Furthermore, several second connecting seats are welded to the outer peripheral wall of the second arc-shaped clamp.

[0012] Furthermore, the second axial through hole is an internally threaded hole on the second connecting seat, and the full-threaded bolt is threadedly engaged with the internally threaded hole on the second connecting seat.

[0013] Furthermore, both the inner walls of the first and second arc-shaped clamps are provided with anti-slip serrations. Alternatively, in another preferred embodiment, anti-slip rubber is adhered to both the inner walls of the first and second arc-shaped clamps.

[0014] Furthermore, the first arc-shaped clamp, the second arc-shaped clamp, and the threaded bolts are all made of stainless steel or hot-dip galvanized steel.

[0015] Furthermore, the number of fully threaded bolts is ≥4.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention uses a first and second arc-shaped clamp to simultaneously bind and constrain two sections of pipe to be joined. When the threaded bolts are tightened, the two sections are synchronously pulled closer and automatically centered, effectively avoiding the misalignment problem caused by manual adjustment and significantly improving the straightness and concentricity of the connection. Simultaneously, the first and second arc-shaped clamps are tightly connected by circumferentially distributed threaded bolts, forming a rigid reinforcing ring at the pipe joint. This effectively resists pipe displacement and deformation caused by its own weight, welding heat stress, or external disturbances, ensuring connection quality. Furthermore, this device is easy to operate; simply place the first and second arc-shaped clamps onto the pipes, insert the threaded bolts, and tighten them synchronously to complete the installation, resulting in high construction efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the structure of the first arc-shaped clamp, the first connecting seat, and the first axial through hole in this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the second arc-shaped clamp, the second connecting seat, and the second axial through hole in this utility model;

[0022] In the picture:

[0023] 1. First arc-shaped clamp; 101. First semi-circular clamp; 102. First connecting ear; 2. Second arc-shaped clamp; 201. Second semi-circular clamp; 202. Second connecting ear; 3. Fully threaded bolt; 4. First connecting seat; 5. First axial through hole; 6. Second connecting seat; 7. Second axial through hole. Detailed Implementation

[0024] The present invention will now be described and illustrated in detail with reference to the embodiments.

[0025] Example 1

[0026] like Figure 1-4As shown, the pipe docking positioning and fixing device includes a clamp body for clamping the outer periphery of the pipe. The clamp body includes a first arc-shaped clamping part 1 and a second arc-shaped clamping part 2 arranged at intervals along the axial direction of the pipe. The first arc-shaped clamping part 1 is used to clamp a section of the pipe to be docked, and the second arc-shaped clamping part 2 is used to clamp another section of the pipe to be docked. The first arc-shaped clamping part 1 and the second arc-shaped clamping part 2 are connected and fixed axially by a number of fully threaded bolts 3. A number of first connecting seats 4 are evenly fixed circumferentially on the outer peripheral wall of the first arc-shaped clamping part 1. Each first connecting seat 4 is provided with a first axial through hole 5. A number of second connecting seats 6 corresponding one-to-one with the first connecting seats 4 are evenly fixed circumferentially on the outer peripheral wall of the second arc-shaped clamping part 2. Each second connecting seat 6 is provided with a second axial through hole 7. Each fully threaded bolt 3 passes through a pair of corresponding first axial through holes 5 and second axial through holes 7.

[0027] The first arc-shaped clamp 1 includes two first semi-circular clamps 101 that are mated together. Both ends of the two first semi-circular clamps 101 extend radially outward to form first connecting ears 102. The two first semi-circular clamps 101 are connected by fastening bolts that pass through their first connecting ears 102.

[0028] The second arc-shaped clamp 2 includes two semi-circular clamps 201 that are mated together. Both ends of the two semi-circular clamps 201 extend radially outward to form second connecting ears 202. The two semi-circular clamps 201 are connected by fastening bolts that pass through their second connecting ears 202.

[0029] Several first connecting seats 4 are welded to the outer peripheral wall of the first arc-shaped clamp part 1.

[0030] The first axial through hole 5 is an internal threaded hole on the first connecting seat 4, and the full thread bolt 3 is threadedly engaged with the internal threaded hole on the first connecting seat 4.

[0031] Several second connecting seats 6 are welded to the outer peripheral wall of the second arc-shaped clamp part 2.

[0032] The second axial through hole 7 is an internal threaded hole on the second connecting seat 6, and the full thread bolt 3 is threadedly engaged with the internal threaded hole on the second connecting seat 6.

[0033] The inner walls of both the first arc-shaped clamp part 1 and the second arc-shaped clamp part 2 are provided with anti-slip serrations.

[0034] The first arc-shaped clamp 1, the second arc-shaped clamp 2, and the threaded bolt 3 are all made of stainless steel or hot-dip galvanized steel.

[0035] The number of fully threaded bolts 3 is ≥4.

[0036] Working principle and process:

[0037] During pipeline connection construction, the first arc-shaped clamp 1 and the second arc-shaped clamp 2 are first fitted onto the two sections of pipeline to be connected. At this time, both the first arc-shaped clamp 1 and the second arc-shaped clamp 2 are in a semi-locked state, that is, they are initially clamped onto the pipeline to be connected by their respective fastening bolts, but a certain amount of looseness is still retained, allowing the first arc-shaped clamp 1 and the second arc-shaped clamp 2 to make circumferential rotational fine adjustments around the outer circumference of the pipeline.

[0038] Subsequently, the fully threaded bolts 3 are sequentially inserted into the first axial through hole 5 on the first connecting seat 4 and the corresponding second axial through hole 7 on the second connecting seat 6. Since the first arc-shaped clamp part 1 and the second arc-shaped clamp part 2 are in a semi-locked state, during the insertion and initial tightening of the fully threaded bolts 3, the first arc-shaped clamp part 1 and the second arc-shaped clamp part 2 can flexibly make slight rotations and displacements, thereby easily driving the two sections of pipe to be connected to be aligned and adjusted.

[0039] After all the threaded bolts 3 are installed and pre-tightened, the two pipe sections are basically aligned. At this point, the fastening bolts on the first arc-shaped clamp 1 and the second arc-shaped clamp 2 are then fully tightened in sequence to completely fix the device to the pipe. During this process, the first arc-shaped clamp 1 and the second arc-shaped clamp 2 are pulled closer by the threaded bolts 3 and finally rigidly connected as one unit. The two pipe sections to be connected are firmly fixed in the centered position, thus completing the final precise positioning and axial reinforcement of the pipe.

Claims

1. A pipe docking positioning and fixing device, comprising a clamp body for engaging the outer periphery of the pipe, characterized in that, The clamp body includes a first arc-shaped clamp (1) and a second arc-shaped clamp (2) spaced apart along the axial direction of the pipe. The first arc-shaped clamp (1) is used to clamp a section of pipe to be connected, and the second arc-shaped clamp (2) is used to clamp another section of pipe to be connected. The first arc-shaped clamp (1) and the second arc-shaped clamp (2) are connected and fixed in the axial direction by a number of fully threaded bolts (3). A number of first connecting seats (4) are evenly fixed along the circumferential direction on the outer peripheral wall of the first arc-shaped clamp (1). Each first connecting seat (4) is provided with a first axial through hole (5). A number of second connecting seats (6) corresponding one-to-one with the first connecting seats (4) are evenly fixed along the circumferential direction on the outer peripheral wall of the second arc-shaped clamp (2). Each second connecting seat (6) is provided with a second axial through hole (7). Each fully threaded bolt (3) is simultaneously inserted into a pair of corresponding first axial through holes (5) and second axial through holes (7).

2. The pipe docking positioning and fixing device according to claim 1, characterized in that, The first arc-shaped clamp (1) includes two first semi-circular clamps (101) that are mated together. Both ends of the two first semi-circular clamps (101) extend radially outward to form first connecting ears (102). The two first semi-circular clamps (101) are connected by fastening bolts that pass through their first connecting ears (102).

3. The pipe docking positioning and fixing device according to claim 1, characterized in that, The second arc-shaped clamp (2) includes two second semi-circular clamps (201) that are mated together. Both ends of the two second semi-circular clamps (201) extend radially outward to form second connecting ears (202). The two second semi-circular clamps (201) are connected by fastening bolts that pass through their second connecting ears (202).

4. The pipe docking positioning and fixing device according to claim 1, characterized in that, Several first connecting seats (4) are welded to the outer peripheral wall of the first arc-shaped clamp (1).

5. The pipe docking positioning and fixing device according to claim 1, characterized in that, The first axial through hole (5) is an internal threaded hole on the first connecting seat (4), and the full thread bolt (3) is threadedly engaged with the internal threaded hole on the first connecting seat (4).

6. The pipe docking positioning and fixing device according to claim 1, characterized in that, Several second connecting seats (6) are welded to the outer peripheral wall of the second arc-shaped clamp (2).

7. The pipe docking positioning and fixing device according to claim 1, characterized in that, The second axial through hole (7) is an internal threaded hole on the second connecting seat (6), and the full thread bolt (3) is threadedly engaged with the internal threaded hole on the second connecting seat (6).

8. The pipe docking positioning and fixing device according to claim 1, characterized in that, Anti-slip serrations are provided on the inner wall of both the first arc-shaped clamp part (1) and the second arc-shaped clamp part (2).

9. The pipe docking positioning and fixing device according to claim 1, characterized in that, The first arc-shaped clamp (1), the second arc-shaped clamp (2), and the threaded bolt (3) are all made of stainless steel or hot-dip galvanized steel.

10. The pipe docking positioning and fixing device according to claim 1, characterized in that, The number of fully threaded bolts (3) is ≥4.

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