A connection device for municipal pipeline installation

Abstract

This utility model relates to the field of municipal pipeline installation technology and discloses a connecting device for municipal pipeline installation, including a first connecting ring and a second connecting ring. A convex ring is provided on the inner surface of the inner sleeve, and a spring is installed on the upper surface of the convex ring. The other end of the spring is installed on the lower surface of the cover plate. This utility model eliminates the traditional threaded connection method, replacing it with bolts that fix the pipeline to the first and second connecting rings. The conical surface of the connecting rod compresses the ball bearings, forcing them to abut against the inner wall of the outer sleeve. This converts the radial pressure into axial displacement of the inner sleeve and compresses the spring. The spring's reaction force is transmitted back to the ball bearings through the convex ring, forming a radial multi-point locking of the connecting rod. Simultaneously, the mechanical locking of the top plate by the fixing plate achieves axial constraint, ensuring that the connecting rod remains without gaps or displacement within the mounting hole under long-term vibration conditions, thus solving the problem of increased fit clearance and separation caused by water hammer effect.

Description

Technical Field

[0001] This utility model relates to the field of municipal pipeline installation technology, specifically a connection device for municipal pipeline installation. Background Technology

[0002] Municipal pipeline installation refers to the engineering process of laying, connecting, and maintaining various underground or above-ground pipeline systems in urban public infrastructure, mainly including pipelines for water supply, drainage, gas, heating, electricity, and communications. Its core objective is to ensure the safe, stable, and efficient operation of the pipeline system to meet the needs of urban residents and industries.

[0003] In existing technologies, pipe connectors are commonly used for installing small-sized municipal pipelines. During installation, external threads are first machined at the ends of the two pipes, which are then screwed into the connector. However, over long-term use, the continuous vibration caused by water flow impact (especially the water hammer effect) can lead to fretting wear on the threaded mating surfaces, causing the mating clearance to widen. When the clearance accumulates to a critical value, the mechanical constraint between the municipal pipeline and the connector decreases significantly, potentially leading to separation failure. Utility Model Content

[0004] The purpose of this utility model is to provide a connection device for municipal pipeline installation, which solves the problem that continuous vibration caused by water flow impact (especially water hammer effect) during long-term use of existing small-sized municipal pipelines can lead to fretting wear on the threaded mating surface, thereby increasing the mating clearance.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a connecting device for municipal pipeline installation, comprising a first connecting ring and a second connecting ring. The first connecting ring has an extension plate on its circumferential side, and a connecting rod on the upper surface of the extension plate. The second connecting ring has a housing on its circumferential side, an outer sleeve installed inside the housing, and a cover plate installed on the upper surface of the housing. An inner sleeve is provided inside the outer sleeve, and an opening is provided on the circumferential side of the inner sleeve. A ball bearing is provided inside the opening, and the outer surface of the ball bearing contacts the inner wall of the outer sleeve. A protruding ring is provided on the inner surface of the inner sleeve, and a spring is installed on the upper surface of the protruding ring. The other end of the spring is installed on the lower surface of the cover plate.

[0007] Furthermore, the upper end of the connecting rod is provided with a tapered surface.

[0008] Furthermore, the upper surface of the inner sleeve is provided with a connecting plate, and the upper end of the connecting plate penetrates the cover plate and is fitted with a top plate.

[0009] Furthermore, the outer surface of the cover plate is provided with a mounting groove, and a fixing plate is hinged to the inner surface of the mounting groove. One side of the fixing plate abuts against the outer surface of the top plate.

[0010] Furthermore, the inner surface of the outer sleeve is provided with an auxiliary groove, and the outer surface of the inner sleeve is provided with an auxiliary block, which is slidably connected inside the auxiliary groove.

[0011] Furthermore, a mounting hole is provided on the lower surface of the housing, one end of which passes through the housing, the outer sleeve and the inner sleeve in sequence. The connecting rod is installed inside the mounting hole, and the outer surface of the connecting rod is in contact with the outer surface of the ball.

[0012] This utility model has the following beneficial effects:

[0013] (1) This utility model eliminates the traditional threaded connection method and replaces it with bolts to fix the pipe between the first connecting ring and the second connecting ring. The conical surface of the connecting rod squeezes the ball, forcing the ball to abut against the inner wall of the outer sleeve. The radial pressure is converted into the axial displacement of the inner sleeve and compresses the spring. The spring reaction force is transmitted back to the ball through the convex ring, forming a radial multi-point locking of the connecting rod. At the same time, the fixing plate mechanically locks the top plate to achieve axial constraint, ensuring that the connecting rod has no gap and no displacement in the mounting hole under long-term vibration conditions, and solving the problem of the expansion of the fit gap and separation caused by the water hammer effect.

[0014] (2) This utility model restricts the circumferential rotational freedom of the inner sleeve relative to the outer sleeve by the sliding fit of the auxiliary block embedded in the auxiliary groove, ensuring that the inner sleeve can only make axial displacement along the direction of the auxiliary groove, thereby maintaining the precise alignment of the ball and the connecting rod, preventing the failure of force transmission due to rotational misalignment, and ensuring the stable conversion of radial locking force and the directional release of spring energy.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0018] Figure 2 This is a cross-sectional view of the overall structure of this utility model during assembly;

[0019] Figure 3 This is an exploded view of the overall structure of this utility model;

[0020] Figure 4 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0021] Figure 5 This utility model Figure 3 Enlarged schematic diagram of the structure at point B;

[0022] The attached diagram lists the components represented by each number as follows:

[0023] In the figure: 1. First connecting ring; 101. Extension plate; 102. Connecting rod; 2. Second connecting ring; 201. Housing; 3. Outer sleeve; 301. Auxiliary groove; 4. Cover plate; 5. Inner sleeve; 501. Protruding ring; 502. Connecting plate; 503. Auxiliary block; 6. Ball bearing; 7. Spring; 8. Top plate; 9. Fixing plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0025] Please see Figures 1-5 As shown, this utility model is a connecting device for municipal pipeline installation, including a first connecting ring 1 and a second connecting ring 2. The peripheral side of the first connecting ring 1 is provided with an extension plate 101, and the upper surface of the extension plate 101 is provided with a connecting rod 102. The peripheral side of the second connecting ring 2 is provided with a housing 201. An outer sleeve 3 is installed inside the housing 201, and a cover plate 4 is installed on the upper surface of the housing 201. An inner sleeve 5 is provided inside the outer sleeve 3. An opening is provided on the peripheral side of the inner sleeve 5, and a ball bearing 6 is provided inside the opening. The outer surface of the ball bearing 6 is in contact with the inner wall of the outer sleeve 3. A protruding ring 501 is provided on the inner surface of the inner sleeve 5, and a spring 7 is installed on the upper surface of the protruding ring 501. The other end of the spring 7 is installed on the lower surface of the cover plate 4.

[0026] The upper end of the connecting rod 102 is provided with a tapered surface;

[0027] The upper surface of the inner sleeve 5 is provided with a connecting plate 502, and the upper end of the connecting plate 502 penetrates the cover plate 4 and is equipped with a top plate 8.

[0028] The outer surface of the cover plate 4 is provided with an installation groove, and a fixing plate 9 is hinged to the inner surface of the installation groove. One side of the fixing plate 9 abuts against the outer surface of the top plate 8.

[0029] By eliminating the traditional threaded connection method and replacing it with bolts to fix the pipe between the first connecting ring 1 and the second connecting ring 2, the conical surface of the connecting rod 102 is used to squeeze the ball 6, forcing the ball 6 to abut against the inner wall of the outer sleeve 3. This converts the radial pressure into the axial displacement of the inner sleeve 5 and compresses the spring 7. The reaction force of the spring 7 is transmitted back to the ball 6 through the convex ring 501, forming a radial multi-point locking of the connecting rod 102. At the same time, the fixing plate 9 mechanically locks the top plate 8 to achieve axial constraint, ensuring that the connecting rod 102 has no gaps or displacement in the mounting hole under long-term vibration conditions, thus solving the problem of increased fit clearance and separation caused by water hammer effect.

[0030] An auxiliary groove 301 is provided on the inner surface of the outer sleeve 3, and an auxiliary block 503 is provided on the outer surface of the inner sleeve 5. The auxiliary block 503 is slidably connected to the inside of the auxiliary groove 301.

[0031] By sliding the auxiliary block 503 into the auxiliary groove 301, the circumferential rotational freedom of the inner sleeve 5 relative to the outer sleeve 3 is constrained, ensuring that the inner sleeve 5 can only make axial displacement along the direction of the auxiliary groove 301, thereby maintaining the precise alignment of the ball 6 and the connecting rod 102, preventing the failure of force transmission due to rotational misalignment, and ensuring the stable conversion of radial locking force and the directional release of the energy stored in the spring 7.

[0032] The lower surface of the housing 201 has a mounting hole. One end of the mounting hole passes through the housing 201, the outer sleeve 3 and the inner sleeve 5 in sequence. The connecting rod 102 is installed inside the mounting hole, and the outer surface of the connecting rod 102 is in contact with the outer surface of the ball 6.

[0033] In use, after fixing the first connecting ring 1 and the second connecting ring 2 to the two municipal pipes with bolts, the connecting rod 102 of the first connecting ring 1 is inserted into the mounting hole of the second connecting ring 2. The conical surface of the connecting rod 102 contacts the ball 6 and applies radial extrusion force, forcing the ball 6 to roll outward and abut against the inner wall of the outer sleeve 3, converting the radial force into the axial displacement of the inner sleeve 5, driving the inner sleeve 5 to move upward and compress the spring 7 to balance. The reaction force of the spring 7 is transmitted to the ball 6 through the convex ring 501, forming a multi-point radial locking of the connecting rod 102. At the same time, the sliding cooperation between the auxiliary block 503 and the auxiliary groove 301 prevents the inner sleeve 5 from rotating, ensuring accurate force transmission. When the inner sleeve 5 moves inside the outer sleeve 3, the connecting plate 502 extends outward and pushes out the top. Finally, the fixing plate 9 is rotated inward, so that the fixing plate 9 is locked to the top plate 8, realizing the bidirectional fixation of the connecting rod 102 in the mounting hole without gaps or displacement, avoiding the risk of thread wear and vibration separation.

[0034] When it is necessary to separate two municipal pipelines, first rotate the fixing plate 9 outward to release the lock on the top plate 8, then lift the top plate 8 to drive the inner sleeve 5 to move axially along the outer sleeve 3. The upward movement of the inner sleeve 5 forces the ball bearing 6 to disengage from the inner wall contact surface of the outer sleeve 3, thereby releasing the radial constraint on the connecting rod 102. At this time, the connecting rod 102 can move freely axially within the mounting hole, and the first connecting ring 1 and its connected municipal pipeline can be directly pulled outward to complete the separation.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A connecting device for municipal pipeline installation, comprising a first connecting ring (1) and a second connecting ring (2), characterized in that: The first connecting ring (1) has an extension plate (101) on its peripheral side, and a connecting rod (102) is provided on the upper surface of the extension plate (101). The second connecting ring (2) has a housing (201) on its peripheral side. An outer sleeve (3) is installed inside the housing (201), a cover plate (4) is installed on the upper surface of the housing (201), an inner sleeve (5) is provided inside the outer sleeve (3), an opening is provided on the circumferential side of the inner sleeve (5), a ball bearing (6) is provided inside the opening, and the outer surface of the ball bearing (6) is in contact with the inner wall of the outer sleeve (3). The inner surface of the inner sleeve (5) is provided with a convex ring (501), and a spring (7) is installed on the upper surface of the convex ring (501). The other end of the spring (7) is installed on the lower surface of the cover plate (4).

2. The connection device for municipal pipeline installation according to claim 1, characterized in that: The upper end of the connecting rod (102) has a tapered surface.

3. A connection device for municipal pipeline installation according to claim 1, characterized in that: The upper surface of the inner sleeve (5) is provided with a connecting plate (502), and the upper end of the connecting plate (502) penetrates the cover plate (4) and is equipped with a top plate (8).

4. A connection device for municipal pipeline installation according to claim 3, characterized in that: The outer surface of the cover plate (4) is provided with an installation groove, and a fixing plate (9) is hinged to the inner surface of the installation groove. One side of the fixing plate (9) abuts against the outer surface of the top plate (8).

5. A connection device for municipal pipeline installation according to claim 1, characterized in that: The inner surface of the outer sleeve (3) is provided with an auxiliary groove (301), and the outer surface of the inner sleeve (5) is provided with an auxiliary block (503), which is slidably connected to the inside of the auxiliary groove (301).

6. A connection device for municipal pipeline installation according to claim 1, characterized in that: The lower surface of the housing (201) is provided with an installation hole. One end of the installation hole passes through the housing (201), the outer sleeve (3) and the inner sleeve (5) in sequence. The connecting rod (102) is installed inside the installation hole. The outer surface of the connecting rod (102) is in contact with the outer surface of the ball (6).

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