A double-walled bellows

Abstract

The utility model relates to double -walled corrugated pipe technical field, concretely relates to a double -walled corrugated pipe, including double -walled corrugated pipe body, the double -walled corrugated pipe body inside assembly has alignment mechanism, the alignment mechanism includes fixed collar, the fixed collar fixed connection in double -walled corrugated pipe body arc face outer wall, the double -walled corrugated pipe body arc face outer wall is seted up with the clamping slot, the clamping slot side is seted up with the inclined groove, the clamping slot inner wall lower surface fixedly connected with the baffle, the clamping slot inner wall front surface is seted up with the recess, the recess inner wall sliding connection slide rod, the slide rod arc face outer wall fixedly connected with the spring, the slide rod arc face outer wall fixedly connected with the fixed block, the clamping slot inside assembly has the joint assembly. The utility model is through the mechanical cooperation of clamping slot and clamping rod, replaced the traditional naked eye alignment mode, eliminated the artificial error, ensured the axis accurate alignment of two corrugated pipes, avoided the hot melt gap problem caused by the misplacement.

Description

Technical Field

[0001] This utility model relates to the field of double-wall corrugated pipe technology, specifically a double-wall corrugated pipe. Background Technology

[0002] Double-wall corrugated pipe is a new type of pipe with a ring-shaped outer wall and a smooth inner wall. It was first successfully developed in Germany in the early 1980s. After more than ten years of development and improvement, it has evolved from a single variety to a complete product series, and its production process and application technology are now very mature. Due to its excellent performance and relatively economical cost, it has been widely promoted and applied in developed countries such as Europe and the United States.

[0003] In the prior art, before hot-melt connection of double-wall corrugated pipes, the two corrugated pipes need to be aligned. However, the prior art requires manual alignment by eye, which may result in misalignment and gaps during hot-melt connection.

[0004] Therefore, a double-walled corrugated pipe is proposed to solve the problems mentioned above. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a double-wall corrugated pipe, which solves the problem that existing technologies require manual alignment, which can lead to misalignment and gaps during heat fusion connection.

[0006] To achieve the above objectives, the present invention provides the following technical solution: including a double-walled corrugated pipe body, wherein an alignment mechanism is assembled inside the double-walled corrugated pipe body;

[0007] The alignment mechanism includes a fixing collar, which is fixedly connected to the outer wall of the arc-shaped surface of the double-walled corrugated pipe body. The outer wall of the arc-shaped surface of the double-walled corrugated pipe body has a slot, and the side of the slot has an oblique groove. A stop block is fixedly connected to the lower surface of the inner wall of the slot. A groove is formed on the front of the inner wall of the slot. A slide rod is slidably connected to the inner wall of the groove. A spring is fixedly sleeved on the outer wall of the arc-shaped surface of the slide rod. A fixing block is fixedly connected to the outer wall of the arc-shaped surface of the slide rod. A snap-fit ​​assembly is assembled inside the slot.

[0008] Preferably, the snap-fit ​​assembly includes a slide groove, which is formed on the upper surface of the stop block. A connecting plate is fixedly connected to the back of the stop block. A movable rod is hinged to the lower surface of the inner wall of the connecting plate. A torsion spring is provided at the hinge point between the movable rod and the connecting plate. The movable rod is snapped into the inner wall of the slide groove.

[0009] Preferably, a clamping rod is fixedly connected to one end of the double-walled corrugated pipe body away from the clamping groove, and a through hole is provided on the side of the clamping rod.

[0010] Preferably, the spring is fixedly connected to the front side of the inner wall of the groove, and the end of the spring away from the groove is fixedly connected to the back side of the fixing block.

[0011] Preferably, the end of the slide near the connecting plate is an inclined surface, a straight surface is fixedly connected to the side of the inclined surface, and a vertical surface is fixedly connected to the side of the straight surface.

[0012] Preferably, the end of the slide rod near the stop has a first rounded corner, and the end of the through hole away from the double-walled corrugated pipe body has a second rounded corner.

[0013] Preferably, the locking rod is slidably connected to the lower surface of the inner wall of the locking slot.

[0014] Compared with the prior art, the present invention provides a double-wall corrugated pipe, which has the following beneficial effects:

[0015] First, the mechanical cooperation of the slot and the lever replaces the traditional visual alignment method, eliminating human error and ensuring that the axes of the two corrugated pipes are precisely aligned, avoiding the problem of heat fusion gaps caused by misalignment.

[0016] Second, the transition structure between the first rounded corner of the slide rod and the second rounded corner of the through hole makes the assembly process tolerant, allowing it to slide in smoothly even with some initial deviation, reducing the skill requirements of the operators and the dependence on on-site construction conditions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a top view of part of the structure of this utility model;

[0019] Figure 3 This is a top view of part of the structure of this utility model;

[0020] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0021] In the figure: 1. Double-wall corrugated pipe body; 2. Alignment mechanism; 21. Fixing collar; 22. Slot; 23. Inclined groove; 24. Slide rod; 25. Spring; 26. Fixing block; 27. Slide groove; 28. Stop block; 29. ​​Connecting plate; 210. Movable rod; 211. Locking rod; 212. Through hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example

[0024] See Figures 1-4 This embodiment provides a double-wall corrugated pipe, including a double-wall corrugated pipe body 1, and an alignment mechanism 2 is assembled inside the double-wall corrugated pipe body 1;

[0025] The alignment mechanism 2 includes a fixing collar 21, which is fixedly connected to the outer wall of the arc-shaped surface of the double-walled corrugated pipe body 1. A slot 22 is provided on the outer wall of the arc-shaped surface of the double-walled corrugated pipe body 1, and a slanted groove 23 is provided on the side of the slot 22. The slot 22 is used to accurately accommodate and guide the locking rod 211 at the other end. The slanted groove 23 may serve as an initial positioning groove to make docking easier to start. A stop block 28 is fixedly connected to the lower surface of the inner wall of the slot 22. A groove is provided on the front of the inner wall of the slot 22. A sliding rod 24 is slidably connected to the inner wall of the groove. A spring 25 is fixedly sleeved on the outer wall of the arc-shaped surface of the sliding rod 24. A fixing block 26 is fixedly connected to the outer wall of the arc-shaped surface of the sliding rod 24. A locking assembly is assembled inside the slot 22.

[0026] The snap-fit ​​assembly includes a slide groove 27, which is formed on the upper surface of the stop block 28. A connecting plate 29 is fixedly connected to the back of the stop block 28. A movable rod 210 is hinged to the lower surface of the inner wall of the connecting plate 29. A torsion spring is provided at the hinge point between the movable rod 210 and the connecting plate 29. The movable rod 210 is snapped into the inner wall of the slide groove 27.

[0027] A clamping rod 211 is fixedly connected to one end of the double-walled corrugated pipe body 1 away from the clamping groove 22. A through hole 212 is opened on the side of the clamping rod 211. The clamping rod 211 is inserted into the clamping groove 22 to achieve preliminary connection and radial positioning.

[0028] Spring 25 is fixedly connected to the front of the inner wall of the groove, and the end of spring 25 away from the groove is fixedly connected to the back of the fixing block 26. One end of spring 25 is fixed to the inner wall of the groove, and the other end is fixed to the fixing block 26, so that spring 25 always has the tendency to push the fixing block 26 and the slide rod 24 connected thereto towards the through hole 212.

[0029] The end of the slide 27 near the connecting plate 29 is an inclined surface. A straight surface is fixedly connected to the side of the inclined surface, and a vertical surface is fixedly connected to the side of the straight surface. The inclined surface guides the end of the movable rod 210 to enter smoothly, ensuring smooth movement. The straight surface provides stable support for the movable rod 210 in the locked state, preventing accidental slippage, enhancing vibration resistance, and serving as a limit stop at the end of the stroke to ensure that the locked position is fixed and reliable.

[0030] The end of the slide rod 24 near the stop block 28 has a first rounded corner. The first rounded corner at the end of the slide rod 24 facilitates its smooth sliding into the through hole 212 and prevents interference from sharp corners. The end of the through hole 212 away from the double-walled corrugated pipe body 1 has a second rounded corner. The second rounded corner at the entrance of the through hole 212 serves as a flared mouth guide, helping the slide rod 24 to be more easily aligned and enter.

[0031] The lever 211 is slidably connected to the lower surface of the inner wall of the slot 22. The lever 211 slides on the lower surface of the inner wall of the slot 22, and the inner wall of the slot 22 forms a tight constraint on the outer wall of the lever 211.

[0032] In practical use, the above-mentioned device is used by inserting the locking rod 211 into the locking groove 22 on the inner wall of another set of double-wall corrugated pipe bodies 1, and then rotating the double-wall corrugated pipe body 1. The locking rod 211 slides into the inner wall of the locking groove 22 through the inclined groove 23. The locking rod 211 presses the movable rod 210, and the movable rod 210 slides out through the inclined surface of the bottom sliding groove 27. Without the limiting of the movable rod 210, the spring 25 drives the fixing block 26 to move forward. The fixing block 26 drives the sliding rod 24 to insert into the through hole 212 on the side of the locking rod 211, thereby fixing the two double-wall corrugated pipe bodies 1.

[0033] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. As long as they can achieve their beneficial effects, they can be implemented. Therefore, this embodiment will not elaborate on their specific structural composition and working principle.

[0034] 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 double-wall corrugated pipe, characterized in that: Includes a double-walled corrugated pipe body (1), and an alignment mechanism (2) is assembled inside the double-walled corrugated pipe body (1). The alignment mechanism (2) includes a fixing collar (21), which is fixedly connected to the outer wall of the arc-shaped surface of the double-wall corrugated pipe body (1). The outer wall of the arc-shaped surface of the double-wall corrugated pipe body (1) is provided with a slot (22). The side of the slot (22) is provided with a slanted groove (23). A stop block (28) is fixedly connected to the lower surface of the inner wall of the slot (22). A groove is provided on the front of the inner wall of the slot (22). A slide rod (24) is slidably connected to the inner wall of the groove. A spring (25) is fixedly sleeved on the outer wall of the arc-shaped surface of the slide rod (24). A fixing block (26) is fixedly connected to the outer wall of the arc-shaped surface of the slide rod (24). A snap-fit ​​assembly is assembled inside the slot (22).

2. The double-wall corrugated pipe according to claim 1, characterized in that: The snap-fit ​​assembly includes a slide groove (27), which is formed on the upper surface of the stop block (28). A connecting plate (29) is fixedly connected to the back of the stop block (28). A movable rod (210) is hinged to the lower surface of the inner wall of the connecting plate (29). A torsion spring is provided at the hinge point between the movable rod (210) and the connecting plate (29). The movable rod (210) is snapped into the inner wall of the slide groove (27).

3. A double-wall corrugated pipe according to claim 2, characterized in that: The double-wall corrugated pipe body (1) is fixedly connected to a clamping rod (211) at one end away from the clamping groove (22), and a through hole (212) is provided on the side of the clamping rod (211).

4. A double-wall corrugated pipe according to claim 3, characterized in that: The spring (25) is fixedly connected to the front side of the inner wall of the groove, and the end of the spring (25) away from the groove is fixedly connected to the back side of the fixing block (26).

5. A double-wall corrugated pipe according to claim 2, characterized in that: The end of the groove (27) near the connecting plate (29) is an inclined surface, and a straight surface is fixedly connected to the side of the inclined surface, and a vertical surface is fixedly connected to the side of the straight surface.

6. A double-wall corrugated pipe according to claim 3, characterized in that: The slide bar (24) has a first rounded corner at the end near the stop (28), and the through hole (212) has a second rounded corner at the end away from the double-walled corrugated pipe body (1).

7. A double-wall corrugated pipe according to claim 3, characterized in that: The lever (211) is slidably connected to the lower surface of the inner wall of the slot (22).

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