Positioning device for double-wall pipe

Abstract

The utility model relates to the technical field of double-wall pipe installation, in particular to a double-wall pipe positioning device which comprises a first double-wall pipe, one end of the first double-wall pipe is connected with a first flange plate in a hot melting mode, the first flange plate is connected with a second flange plate in a bolt mode, and one end of the second flange plate is connected with a second double-wall pipe in a hot melting mode. Positioning and fixing assemblies are arranged on the first flange plate and the second flange plate; according to the positioning device for the double-wall pipe, the two ends of the double-wall pipe are connected with the flange plates in a hot melting mode before leaving a factory, the positioning and fixing assemblies are arranged on the flange plates, and the double-wall pipe with the flange plates at the two ends is conveyed to a designated position; flange plates needing to be in butt joint are directly pre-positioned and fixed through the positioning cylinder and the positioning and fixing assembly, then two double-wall pipes can be installed through bolt fixing, and rapid positioning and installation of the double-wall pipes in a narrow space are achieved.

Description

Technical Field

[0001] This utility model relates to the field of double-walled pipe installation, specifically a positioning device for double-walled pipes. Background Technology

[0002] Double-walled tubes are tubular materials with specific structures and functions. They are usually composed of two layers: the outer layer is made of high-quality, soft cross-linked polyolefin material, while the inner layer is made by hot melt adhesive bonding.

[0003] Chinese Patent CN220242472U discloses a hot-melt connection device for HDPE double-wall corrugated pipes, including an operating table. The top of the operating table has a movable groove, and a clamping mechanism is movably connected to the top of the operating table. A docking mechanism is movably connected inside the movable groove. A support frame is fixedly connected to the side of the operating table, and a fixing frame is fixedly connected to the top of the support frame. This invention utilizes the clamping mechanism, where a servo motor drives a gear to rotate, which in turn drives a gear to rotate. The gear then drives a rotating column to rotate within the connecting seat. The rotating column maintains the height of gear two. The rotation of gear two, through a threaded connection, causes a threaded rod to lift the clamping block. The corrugated pipe is then placed into the clamping groove. The servo motor rotates in the opposite direction, causing the threaded rod to lower the clamping block, clamping the section of the corrugated pipe located within the clamping groove. A frosted particle coating prevents the corrugated pipe from slipping, effectively surrounding and clamping the pipe completely, preventing it from falling off.

[0004] The above-mentioned scheme and existing technology for double-walled pipes usually adopt the hot-melt butt welding installation method. This method may cause installation position deviation for the installation of double-walled pipes that require pre-positioning of the two pipes, affecting the installation quality. Moreover, the hot-melt operation is inconvenient when installing in a space with limited operating space. The lack of corresponding accurate positioning and convenient on-site installation structure in this case requires improvement and optimization. Utility Model Content

[0005] The purpose of this invention is to provide a positioning device for a double-walled tube to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a positioning device for a double-walled pipe includes a first double-walled pipe, one end of which is heat-fused to a first flange, the first flange is bolted to a second flange, one end of which is heat-fused to a second double-walled pipe, and positioning and fixing components are provided on the first flange and the second flange.

[0007] Preferably, the first flange has a sealing groove at one end, multiple sets of positioning round holes, and multiple sets of threaded holes.

[0008] Preferably, a sealing ring is inserted into the sealing groove, a screw is threaded into the threaded hole, and a nut is threaded into one end of the screw.

[0009] Preferably, the second flange has a sealing groove at one end, multiple sets of positioning cylinders are fixedly connected to the second flange, multiple sets of threaded holes are provided on the second flange, and sliding holes are provided on the second flange.

[0010] Preferably, the positioning and fixing assembly includes a positioning and fixing hole located inside the first flange. One end of the positioning and fixing hole has a fan-shaped groove, and the other end of the fan-shaped groove has a clearance groove. A fixing pin is inserted into the positioning and fixing hole, and one end of the fixing pin has a fixing protrusion. An arc-shaped stop is inserted into the fan-shaped groove, and the arc-shaped stop has a clearance opening in the middle. A pressing block is fixedly connected to one end of the arc-shaped stop, and a connecting spring is fixedly connected to the middle of the arc-shaped stop. One end of the connecting spring is fixedly connected to the inside of the first flange.

[0011] Preferably, the fixing pin is slidably inserted into the sliding circular hole, and one end of the fixing pin is fixedly connected to a rotating body.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The positioning device for double-walled pipes proposed in this utility model mainly involves heat-melting flanges at both ends of the double-walled pipes before they leave the factory. The flanges are equipped with positioning and fixing components. The double-walled pipes with flanges at both ends are transported to the designated position, and the flanges to be connected are pre-positioned and fixed directly by the positioning cylinder and the positioning and fixing components. Then, the installation of the two double-walled pipes can be completed by fixing with bolts, realizing the rapid positioning and installation of double-walled pipes in narrow spaces. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a positioning device for a double-walled tube;

[0015] Figure 2 for Figure 1 Enlarged diagram of part A in the middle;

[0016] Figure 3 This is a schematic diagram of the structure of a positioning device for a double-walled tube from another perspective.

[0017] Figure 4 Figure 3 Enlarged diagram of part B in the middle;

[0018] Figure 5 This is a partial cross-sectional view of the structure of a positioning device for a double-walled tube;

[0019] Figure 6 for Figure 5Enlarged diagram of section C in the middle;

[0020] Figure 7 This is a partial structural diagram of a positioning device for a double-walled tube;

[0021] Figure 8 Another partial cross-sectional view of the structure of a positioning device for a double-walled tube;

[0022] Figure 9 as one Figure 8 Enlarged schematic diagram of part D in the middle.

[0023] In the figure: First double-walled pipe 1, First flange 2, Sealing groove 201, Positioning round hole 202, Threaded hole 203, Sealing ring 204, Screw 205, Nut 206, Second flange 3, Positioning cylinder 301, Sliding round hole 302, Second double-walled pipe 4, Positioning and fixing assembly 5, Positioning and fixing hole 501, Fan-shaped groove 502, Clearance groove 503, Fixing pin 504, Fixing protrusion 505, Arc-shaped stop 506, Clearance opening 507, Pressing block 508, Connecting spring 509, Rotary hand body 510. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] Please see Figures 1-9 The present invention provides the following two preferred embodiments:

[0026] Example 1: A positioning device for a double-walled pipe includes a first double-walled pipe 1, one end of which is heat-fused to a first flange 2, the first flange 2 is bolted to a second flange 3, and one end of the second flange 3 is heat-fused to a second double-walled pipe 4. Positioning and fixing components 5 are provided on the first flange 2 and the second flange 3. One end of the first flange 2 has a sealing groove 201, multiple sets of positioning holes 202, and multiple sets of threaded holes 203. A sealing ring 204 is inserted into the sealing groove 201, and a screw 205 is threaded into the threaded hole 203. One end of the screw 205 is threaded to a nut 206. One end of the second flange 3 has a sealing groove 201, multiple sets of positioning cylinders 301 are fixedly connected to the second flange 3, multiple sets of threaded holes 203, and sliding holes 302.

[0027] In use, the two ends of the double-walled pipe are heat-fused to the flanges. The installation of the two double-walled pipes can be achieved by fixing the first flange 2 and the second flange 3 with the butt bolts. Before the butt installation, the positioning cylinder 301, the positioning hole 202 and the positioning and fixing component 5 are used for pre-positioning and pre-fixing.

[0028] Example 2: Based on Example 1, the positioning and fixing component 5 includes a positioning and fixing hole 501, which is located inside the first flange 2. One end of the positioning and fixing hole 501 has a fan-shaped groove 502, and one end of the fan-shaped groove 502 has a clearance groove 503. A fixing pin 504 is inserted into the positioning and fixing hole 501, and one end of the fixing pin 504 has a fixing protrusion 505. An arc-shaped stop 506 is inserted into the fan-shaped groove 502, and the arc-shaped stop 506 has a clearance opening 507 in the middle. A pressing block 508 is fixedly connected to one end of the arc-shaped stop 506, and a connecting spring 509 is fixedly connected to the middle of the arc-shaped stop 506. One end of the connecting spring 509 is fixedly connected to the inside of the first flange 2. The fixing pin 504 is slidably inserted into the sliding round hole 302, and one end of the fixing pin 504 is fixedly connected to a rotating body 510.

[0029] During use, before flange docking and installation, align the fixing pin 504 and fixing protrusion 505 with the positioning fixing hole 501, and simultaneously align the positioning cylinder 301 with the positioning round hole 202 for insertion. This completes the positioning work before installing the two double-walled pipes. After positioning, rotate the handle 510 to rotate and press the fixing protrusion 505 through the arc-shaped stop 506 and insert it into the inside of the fan-shaped groove 502. This completes the pre-fixing of the positioning and prevents the bolts from loosening and affecting the positioning effect. When disassembling the two pipes, first press the pressing block 508 to press the arc-shaped stop 506 into the relief groove 503 and align the relief opening 507 with the fixing protrusion 505. Rotate the handle 510 to release the restriction on the fixing protrusion 505, and then detach the two flanges to complete the disassembly of the two pipes.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning device for a double-walled tube, characterized in that: It includes a first double-walled pipe (1), one end of which is heat-fused to a first flange (2), the first flange (2) is bolted to a second flange (3), one end of which is heat-fused to a second double-walled pipe (4), and the first flange (2) and the second flange (3) are provided with positioning and fixing components (5).

2. The positioning device for a double-walled tube according to claim 1, characterized in that: The first flange (2) has a sealing groove (201) at one end, multiple sets of positioning round holes (202) on the first flange (2), and multiple sets of threaded holes (203) on the first flange (2).

3. The positioning device for a double-walled tube according to claim 2, characterized in that: A sealing ring (204) is inserted into the sealing groove (201), and a screw (205) is threaded into the threaded hole (203). A nut (206) is threaded into one end of the screw (205).

4. The positioning device for a double-walled tube according to claim 1, characterized in that: The second flange (3) has a sealing groove (201) at one end, a number of positioning cylinders (301) are fixedly connected to the second flange (3), a number of threaded holes (203) are provided on the second flange (3), and a sliding hole (302) is provided on the second flange (3).

5. The positioning device for a double-walled tube according to claim 1, characterized in that: The positioning and fixing assembly (5) includes a positioning and fixing hole (501) located inside the first flange (2). One end of the positioning and fixing hole (501) has a fan-shaped groove (502), and the other end of the fan-shaped groove (502) has a clearance groove (503). A fixing pin (504) is inserted into the positioning and fixing hole (501). One end of the fixing pin (504) has a fixing protrusion (505). An arc-shaped stop block (506) is inserted into the fan-shaped groove (502). The arc-shaped stop block (506) has a clearance opening (507) in the middle. One end of the arc-shaped stop block (506) is fixedly connected to a pressing block (508). A connecting spring (509) is fixedly connected to the middle of the arc-shaped stop block (506). One end of the connecting spring (509) is fixedly connected inside the first flange (2).

6. The positioning device for a double-walled tube according to claim 5, characterized in that: The fixing pin (504) is slidably inserted into the sliding round hole (302), and a rotating body (510) is fixedly connected to one end of the fixing pin (504).

Images