Rail transit elbow joint

Abstract

The utility model relates to pipeline joint technical field, and disclose rail transit elbow joint, include: elbow joint, the inner wall of end portion and elbow joint is slidably arranged, wherein, the connecting pipe is connected with the setting of dismounting component between elbow joint, and the end portion of this connecting pipe has the sealing assembly setting with the inner wall of elbow joint. The outer wall of connecting pipe close to the one end of elbow joint has the first annular groove and second annular groove setting, the inner wall of first annular groove is closely contacted with the end surface of elbow joint and is set. The rail transit elbow joint, realizes firm connection through dismounting component, and in sealing assembly, sealing clamping body protruding end and sealing clamping seat arc sealing groove accurate clamping, increase the contact area, effectively prevent medium leakage, ensure that the sealing performance reliable at joint, and the preliminary contact structure of connecting pipe and elbow joint can also assist positioning, improve the connection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of pipe joint technology, specifically to a rail transit bend pipe joint. Background Technology

[0002] In rail transit pipeline systems, pipe bends are critical connecting components, and their performance directly affects the stability of pipeline operation. Traditional pipe bends often have several problems: low connection and disassembly efficiency is one of the more common issues. They often rely on tools for fixing or disassembling, which is cumbersome and time-consuming, making it difficult to meet the rail transit sector's demand for convenient equipment maintenance.

[0003] Therefore, we proposed a rail transit bend joint to solve the problem. Utility Model Content

[0004] The purpose of this utility model is to provide a rail transit bend joint, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rail transit bend joint, comprising: Pipe bend fitting; The connecting pipe is slidably positioned at its end against the inner wall of the bend joint; The connecting pipe and the bend joint are connected by a disassembly assembly, and the end of the connecting pipe and the inner wall of the bend joint are provided with a sealing assembly.

[0006] Preferably, the outer wall of the connecting pipe near the elbow joint has a first annular groove and a second annular groove, and the inner wall of the first annular groove is in close contact with the end face of the elbow joint.

[0007] Preferably, the disassembly / assembly assembly includes: The arc-shaped rubber block is fixedly installed on the inner wall of the arc-shaped notch on the outer wall of the bend joint; The clamp rod is fixedly installed at one end to the concave surface of the arc-shaped rubber block, and the other end of the clamp rod is engaged with the groove on the second annular groove on the outer wall of the connecting pipe.

[0008] Preferably, the bottom surface of the end where the lever engages with the slot is rounded.

[0009] Preferably, a U-shaped rubber sleeve is fixedly installed on the inner wall of the slot, and the rubber sleeve is engaged with the end of the lever with rounded corners.

[0010] Preferably, an arc-shaped elastic plastic support is fixedly installed on the top surface of the middle structure of the clamp rod, and the end of the elastic plastic support away from the clamp rod is fixedly installed to the inner wall of the arc-shaped notch.

[0011] Preferably, the disassembly / assembly assembly further includes: The rotating cover is rotatably set with the annular groove opened on the outer wall of the bend joint, and can rotate along the inner wall of the annular groove. An arc-shaped elastic sheet is in a state of compression deformation. One end of the arc-shaped elastic sheet is fixedly installed on the inner wall of the rotating cover, and the other end of the arc-shaped elastic sheet is fixedly installed with a pressure block that contacts the outer wall of the bent pipe joint.

[0012] Preferably, the outer wall of the rotating cover has anti-slip texture, and the end face of the pressing block that contacts the outer wall of the bend joint is arc-shaped. The anti-slip texture increases the grip friction and avoids slippage during operation; the arc end face reduces frictional damage between the pressing block and the bend joint and ensures smooth rotation.

[0013] Preferably, the sealing assembly includes: A sealing bracket is fixedly installed on the inner wall of the bend joint; The sealing bracket has an arc-shaped sealing groove on the side facing the connecting pipe. The sealing clip is fixedly installed on the inner side wall of the second annular groove on the outer wall of the end of the connecting pipe; The sealing card body has a raised side facing the sealing card seat, and it is sealed and engaged with the arc-shaped sealing groove on the side of the sealing card seat. The cooperation between the raised side and the arc-shaped sealing groove increases the sealing contact area, improves the sealing performance of the connection part, and prevents media leakage.

[0014] This utility model provides a rail transit bend joint. This rail transit bend joint has the following beneficial effects: 1. This rail transit bend joint achieves a stable connection through the assembly and disassembly of components; at the same time, in the sealing component, the protruding end of the sealing clip body precisely engages with the arc-shaped sealing groove of the sealing clip seat, increasing the contact area, effectively preventing media leakage, ensuring reliable sealing performance at the joint, and the initial contact structure between the connecting pipe and the bend joint can also assist in positioning and improve connection accuracy.

[0015] 2. This rail transit bend joint uses the cooperation of an arc-shaped elastic sheet and a pressure block to push the relevant components to disengage the snap-fit ​​structure, achieving rapid disassembly. During installation, simply slide the connecting pipe into the bend joint, and the snap-fit ​​structure can automatically or easily complete the snap-fit. The entire disassembly and assembly process is smooth, saving time and labor costs. In addition, the anti-slip design of the rotating cover and the arc end face of the pressure block can respectively prevent slippage during operation and reduce friction damage to components. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the rail transit bend joint of this utility model; Figure 2 This utility model relates to a rail transit bend joint. Figure 1A schematic diagram of the exploded structure of the swivel cover and the bend joint; Figure 3 This utility model relates to a rail transit bend joint. Figure 2 Enlarged structural diagram at point A in the diagram; Figure 4 This utility model relates to a rail transit bend joint. Figure 1 A partial sectional view of the structure; Figure 5 This utility model relates to a rail transit bend joint. Figure 4 Enlarged structural diagram at point B in the diagram; Figure 6 This is an exploded view of the end of the connecting pipe in the rail transit bend joint of this utility model; Figure 7 This is a cross-sectional view of the sealing component in the rail transit bend joint of this utility model; Figure 8 This is a side sectional view of the rotating cover structure in the rail transit bend joint of this utility model.

[0017] In the picture: 1. Pipe bend fitting; 2. Connecting pipe; 3. Assembly / disassembly components; 31. Rotary cover; 32. Arc-shaped rubber block; 33. Pressing block; 34. Arc-shaped elastic sheet; 35. Annular groove; 36. Arc-shaped notch; 37. Locking rod; 38. Elastic plastic support body; 39. Locking groove; 310. Rubber sleeve; 4. Sealing assembly; 41. Sealing bracket; 42. Sealing body. Detailed Implementation

[0018] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0019] like Figure 1-8 As shown, this utility model provides a technical solution: a rail transit bend joint, comprising: Pipe bend connector 1; The connecting pipe 2 is slidably disposed at its end with the inner wall of the elbow joint 1. The outer wall of the connecting pipe 2 near the elbow joint 1 has a first annular groove and a second annular groove. The inner wall of the first annular groove is in close contact with the end face of the elbow joint 1. Here, the outer wall of the connecting pipe 2 near the elbow joint 1 is provided with a first annular groove and a second annular groove. The inner wall of the first annular groove is in close contact with the end face of the elbow joint 1: the connection position of the connecting pipe 2 and the elbow joint 1 is initially located, providing a basis for subsequent sealing and snap-fitting. The connecting pipe 2 and the elbow joint 1 are connected by a disassembly and assembly assembly, and the end of the connecting pipe 2 and the inner wall of the elbow joint 1 are provided with a sealing assembly. The disassembly and assembly components include: The arc-shaped rubber block 32 is fixedly installed on the inner wall of the arc-shaped notch 6 opened on the outer wall of the elbow joint 1; The clamp rod 37 is fixedly installed at one end to the concave surface of the arc-shaped rubber block 32, and the other end of the clamp rod 37 is engaged with the groove 39 on the second annular groove on the outer wall of the connecting pipe 2. Here, the quick fixing of the connecting pipe 2 and the elbow joint 1 is achieved through a snap-fit ​​structure, and the arc-shaped rubber block 32 can provide buffering and pre-tightening force; Among them, the bottom surface of the end of the latch 37 that is engaged with the latch 39 is rounded, and a U-shaped rubber sleeve 310 is fixedly installed on the inner wall of the latch 39. The rubber sleeve 310 is engaged with the end of the latch 37 that has rounded corners. Here, the bottom surface of the end of the locking rod 37 that engages with the locking slot 39 is rounded: this reduces frictional resistance during engagement, making it easier for the locking rod 37 to quickly engage or disengage from the locking slot 39, resulting in smoother operation. The inner wall of the locking slot 39 is fixed with a U-shaped rubber sleeve 310, which engages with the rounded end of the locking rod 37: this enhances the engagement stability between the locking rod 37 and the locking slot 39, prevents loosening, and also provides a buffering and protective function to prevent wear on the locking rod 37.

[0020] Furthermore, an arc-shaped elastic plastic support 38 is fixedly installed on the top surface of the middle structure of the lever 37, and the end of the elastic plastic support 38 away from the lever 37 is fixedly installed on the inner wall of the arc-shaped notch 36. Here, the elastic plastic support 38 provides elastic support for the locking rod 37, ensuring that the locking rod 37 always remains effectively engaged with the locking slot 39, and also assists the locking rod 37 in resetting during disassembly.

[0021] The disassembly and assembly components also include: The rotating cover 31 is rotatably configured with the annular groove 35 opened on the outer wall of the elbow joint 1, and can rotate along the inner wall of the annular groove 35. The arc-shaped elastic sheet 34 is in a compressed deformation state. One end of the arc-shaped elastic sheet 34 is fixedly installed on the inner wall of the rotating cover 31, and the other end of the arc-shaped elastic sheet 34 is fixedly installed with a pressing block 33 that contacts the outer wall of the bent pipe joint 1. Here, rotating the rotating cover 31 can drive the arc-shaped elastic sheet 34 to rotate together. When the pressing block 33 at the bottom of the arc-shaped elastic sheet 34, which is in a compressed state, moves to the arc-shaped rubber block 32, the arc-shaped elastic sheet 34 will open, causing the pressing block 33 to press down on the arc-shaped rubber block 32, thereby easily pressing the locking rod 37, causing the locking rod 37 to lift up, and causing the end of the locking rod 37 to disengage from the locking groove 39, thus completing the disassembly work without the need for tools, which is quite convenient.

[0022] Among them, the outer wall of the rotating cover 31 has anti-slip texture, and the end face of the pressing block 33 that contacts the outer wall of the elbow joint 1 is rounded. Here, the anti-slip texture increases grip friction and prevents slippage during operation; the rounded end face reduces frictional damage between the pressure block and the bend joint, ensuring smooth rotation.

[0023] The sealing assembly includes: The sealing bracket 41 is fixedly installed on the inner wall of the elbow joint 1; The sealing bracket 41 has an arc-shaped sealing groove on the side facing the connecting pipe 2; The sealing clip 42 is fixedly installed on the inner side wall of the second annular groove on the outer wall of the end of the connecting pipe 2; The sealing card body 42 is convex on the side facing the sealing card seat 41 and is sealed and engaged with the arc-shaped sealing groove on the side of the sealing card seat 41. Here, the combination of the protrusion and the arc-shaped sealing groove increases the sealing contact area, improves the sealing performance of the connection, and prevents media leakage.

[0024] When the rail transit bend joint is in use, when the end of the connecting pipe 2 slides into the inner wall of the bend joint 1, the inner wall of the first annular groove on its outer wall makes tight contact with the end face of the bend joint 1 to achieve initial positioning. The protruding end of the sealing clip 42 at the second annular groove precisely engages with the arc-shaped sealing groove of the sealing clip seat 41 on the inner wall of the bend joint 1, thereby enhancing the sealing and leak-proof effect by increasing the contact area. At the same time, the arc-shaped rubber block 32 in the arc-shaped notch 36 on the outer wall of the bend joint 1 drives the clamping rod 37, causing its rounded end to engage in the groove 39 of the connecting pipe 2. The U-shaped rubber sleeve 310 in the groove 39 further reinforces the engagement stability. The arc-shaped part of the clamping rod 37 in the middle of the groove further enhances the engagement stability. The elastic plastic support 38 provides continuous elastic support to ensure a firm connection. During disassembly, the rotating cover 31 with anti-slip texture is rotated so that it rotates along the annular groove 35 of the elbow joint 1, which drives the arc-shaped elastic sheet 34, which is in a compressed state, to move synchronously. When the pressure block 33 rotates to the arc-shaped rubber block 32, the arc-shaped elastic sheet 34 opens and pushes the pressure block 33 to press down on the arc-shaped rubber block 32, causing the locking rod 37 to lift up and disengage from the locking groove 39. Disassembly can be completed without tools. The entire process is achieved through the synergistic action of one elbow joint, one connecting pipe, one set of disassembly and assembly components, and one set of sealing components, which enables quick connection, reliable sealing, and convenient disassembly and assembly.

[0025] The above description is merely an illustrative embodiment of this utility model and is not intended to limit the scope of this utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model. Furthermore, it should be noted that the components of this utility model are not limited to the overall application described above. Each technical feature described in the specification of this utility model can be used individually or in combination as needed. Therefore, this utility model naturally covers other combinations and specific applications related to the points of this utility model.

Claims

1. A rail transit bend joint, characterized in that: include: (1) Bend fitting; The connecting pipe (2) is slidably disposed at its end against the inner wall of the elbow joint (1); The connecting pipe (2) and the bend joint (1) are connected by a disassembly and assembly assembly, and the end of the connecting pipe (2) and the inner wall of the bend joint (1) are provided with a sealing assembly.

2. The rail transit bend joint according to claim 1, characterized in that: The outer wall of the connecting pipe (2) near the elbow joint (1) has a first annular groove and a second annular groove, and the inner wall of the first annular groove is in close contact with the end face of the elbow joint (1).

3. The rail transit bend joint according to claim 1, characterized in that: The disassembly / assembly components include: The arc-shaped rubber block (32) is fixedly installed on the inner wall of the arc-shaped notch (36) opened on the outer wall of the elbow joint (1); One end of the clamp rod (37) is fixedly installed on the concave surface of the arc-shaped rubber block (32), and the other end of the clamp rod (37) is engaged with the groove (39) on the second annular groove on the outer wall of the connecting pipe (2).

4. The rail transit bend joint according to claim 3, characterized in that: The bottom surface of the end where the lever (37) engages with the slot (39) is rounded.

5. The rail transit bend joint according to claim 3, characterized in that: The inner wall of the slot (39) is fixedly installed with a U-shaped rubber sleeve (310), and the rubber sleeve (310) is engaged with the end of the rod (37) with rounded corners.

6. The rail transit bend joint according to claim 3, characterized in that: An arc-shaped elastic plastic support (38) is fixedly installed on the top surface of the middle structure of the lever (37), and the end of the elastic plastic support (38) away from the lever (37) is fixedly installed on the inner wall of the arc-shaped notch (36).

7. The rail transit bend joint according to claim 1, characterized in that: The disassembly / assembly assembly also includes: The shroud (31) is rotatably set with the annular groove (35) opened on the outer wall of the elbow joint (1), and can rotate along the inner wall of the annular groove (35); The arc-shaped elastic sheet (34) is in a compressed deformation state. One end of the arc-shaped elastic sheet (34) is fixedly installed on the inner wall of the rotating cover (31), and the other end of the arc-shaped elastic sheet (34) is fixedly installed with a pressing block (33) that contacts the outer wall of the bent pipe joint (1).

8. The rail transit bend joint according to claim 7, characterized in that: The outer wall of the rotating cover (31) has anti-slip texture, and the end face of the pressing block (33) that contacts the outer wall of the elbow joint (1) is arc-shaped.

9. The rail transit bend joint according to claim 1, characterized in that: The sealing assembly includes: A sealing bracket (41) is fixedly installed on the inner wall of the elbow joint (1); The sealing bracket (41) has an arc-shaped sealing groove on the side facing the connecting pipe (2); The sealing clip (42) is fixedly installed on the inner side wall of the second annular groove on the outer wall of the end of the connecting pipe (2); The sealing card body (42) facing the sealing card seat (41) is convex and is sealed and engaged with the arc-shaped sealing groove on the side of the sealing card seat (41).

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