Movable connecting device for air suction pipe

Abstract

The utility model provides a movable connecting device for an air suction pipe, which relates to the technical field of connecting devices and comprises a corrugated pipe, first sealing elements are fixed at two ends of the corrugated pipe, first flanges are fixed on the outer walls of the two first sealing elements, and air suction pipe main bodies are arranged at two ends of the corrugated pipe. Through the arrangement of the corrugated pipe, the two air suction pipe main bodies are subjected to butt joint treatment, and the corrugated pipe can absorb changes through self stretching and bending when the air suction pipe main bodies are subjected to displacement, vibration or thermal expansion, so that the stability of the air suction pipe main bodies is protected; the connecting plates can be attached to the two sides of the air suction pipe body all the time under the thrust of the springs, when the air suction pipe body displaces and inclines, the connecting plates and the springs can conduct buffering treatment on the connecting positions of the air suction pipe body, the problems that the air suction pipe body suddenly inclines and is damaged are avoided, the air suction pipe body is limited through the arrangement of the stabilizing plates, and the service life of the air suction pipe body is prolonged. And the phenomenon of large-amplitude inclination is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of connection devices, in particular to a movable connection device for an air intake pipe. Background Art

[0002] Suction pipe articulation devices are commonly used in the exhaust systems of vehicles or mechanical equipment to connect different parts of the pipes to ensure smooth flow of gas.

[0003] At present, a kind of movable connection device of the suction pipe in the prior art cannot reduce the influence of the vibration and stress of the suction pipe main body on the suction pipe main body, and has poor practicality. In addition, a kind of movable connection device of the suction pipe in the prior art does not have a buffering and stabilizing structure for the connection of the suction pipe main body, which may cause the connection of the suction pipe main body to wear and break, and has poor practicality. Utility Model Content

[0004] The purpose of the utility model is to solve the problems in the prior art that the vibration and stress of the intake duct main body cannot be reduced and the influence on the intake duct main body is not provided with a buffering and stable structure for the connection of the intake duct main body, which may cause wear and fracture of the connection of the intake duct main body, and to propose a movable connection device for the intake duct.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: an air intake pipe movable connection device, including a bellows, a first sealing member is fixed at both ends of the bellows, a first flange is fixed on the outer wall of the two first sealing members, an air intake pipe body is provided at both ends of the bellows, a second sealing member is fixed at the opposite end of the two air intake pipe bodies, a second flange is fixed on the outer wall of the two second seals, the first flange and the second flange are fixed to each other by bolts, a friction increasing sleeve is fixed on the outer wall of the two first flanges, studs are threadedly connected at both ends of the outer wall of the friction increasing sleeve, a stabilizing plate is provided at one end of the two studs located in the ferrule, and a buffering structure for buffering and stabilizing the air intake pipe body is provided at the opposite end of the two stabilizing plates.

[0006] Preferably, the buffer structure includes an inner cavity opened at one end of the stabilizing plate facing the air intake pipe body, a plurality of springs are fixed on the inner wall of the inner cavity, and a connecting plate is commonly fixed to the other ends of the plurality of springs, and the end of the connecting plate away from the spring passes through the inner cavity and fits against the outer wall of the air intake pipe body.

[0007] Preferably, both ends of the connecting plate are fixed with limiting blocks, and both sides of the inner cavity of the stabilizing plate are provided with limiting grooves matching the limiting blocks.

[0008] Preferably, a rotating shaft is provided between the stud and the stabilizing plate, and two ends of the rotating shaft are rotatably connected to the stabilizing plate and the stud respectively.

[0009] Preferably, a rotating plate is fixed to one end of the stud outside the ferrule, and a friction-enhancing sleeve is fixed on the outer wall of the rotating plate.

[0010] Preferably, a guide column is fixed to one end of the first flange facing the second flange, and a guide groove matching the guide column is formed on one end of the second flange facing the first flange.

[0011] Compared with the prior art, the advantages and positive effects of the present invention are:

[0012] 1. In this utility model, the two suction pipe bodies are butted together by the use of a bellows. The bellows are made of multiple layers of thin metal sheets, exhibiting excellent flexibility and pressure resistance. When the suction pipe bodies undergo displacement, vibration, or thermal expansion, the bellows can absorb these changes through its own expansion and contraction, thus maintaining the stability of the suction pipe bodies.

[0013] 2. In the present invention, the spring is provided so that the connecting plate will always fit the two sides of the intake pipe body under the thrust of the spring. When the intake pipe body is displaced and tilted, the connecting plate and the spring will buffer the connection of the intake pipe body to avoid sudden tilting and damage. In addition, the stabilizing plate is provided to limit the intake pipe body to avoid large tilting, and the stability is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional diagram of a movable connection device for an air intake pipe proposed in the utility model;

[0015] Figure 2 This is a cross-sectional view of a movable connection device for an air intake pipe proposed in the utility model;

[0016] Figure 3 This is a schematic diagram of the bellows structure of a movable connection device for an air intake pipe proposed in the utility model;

[0017] Figure 4 The utility model provides a schematic diagram of a buffer structure of a movable connection device for an air intake pipe.

[0018] Legend: 1. Bellows; 2. First seal; 3. First flange; 4. Intake pipe body; 5. Second seal; 6. Second flange; 7. Bolt; 8. Guide column; 9. Guide groove; 10. Ring; 11. Stud; 12. Rotating plate; 13. Friction sleeve; 14. Rotating shaft; 15. Stabilizing plate; 16. Buffer structure; 1601. Inner cavity; 1602. Spring; 1603. Connecting plate; 17. Limit block; 18. Limit groove. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0021] Example 1, as Figure 1-4 As shown, the utility model provides an air intake pipe movable connection device, including a bellows 1, a first sealing member 2 is fixed at both ends of the bellows 1, a first flange 3 is fixed on the outer wall of the two first sealing members 2, an air intake pipe body 4 is provided at both ends of the bellows 1, a second sealing member 5 is fixed at the opposite end of the two air intake pipe bodies 4, a second flange 6 is fixed on the outer wall of the two second sealing members 5, the first flange 3 and the second flange 6 are fixed to each other by bolts 7, a friction increasing sleeve 13 is fixed on the outer wall of the two first flanges 3, studs 11 are threadedly connected at both ends of the outer wall of the friction increasing sleeve 13, a stabilizing plate 15 is provided at one end of the two studs 11 located in the ring 10, and a buffering structure 16 for buffering and stabilizing the air intake pipe body 4 is provided at the opposite end of the two stabilizing plates 15.

[0022] The effect achieved by the entire embodiment 1 is that, through the provision of the first flange 3, the second flange 6 and the bolts 7, the two suction pipe bodies 4 can be fixedly installed with the two ends of the bellows 1. The bellows 1 is made of multiple layers of thin metal sheets and has good flexibility and pressure resistance. When the suction pipe body 4 is displaced, vibrated or thermally expanded, the bellows 1 can absorb these changes through its own expansion and contraction and bending, thereby protecting the stability of the suction pipe body 4. Through the provision of the first seal 2 and the second seal 5, the two suction pipe bodies 4 are more tightly sealed when they are installed and docked with the bellows 1, thereby improving the sealing performance of the device. Through the provision of the buffer structure 16, the connection of the suction pipe body 4 is buffered to prevent it from suddenly tilting and damaging. Moreover, through the provision of the stabilizing plate 15, the suction pipe body 4 is limited to prevent it from tilting significantly, thereby enhancing stability.

[0023] Example 2, as Figure 1-4As shown, the buffer structure 16 includes an inner cavity 1601 opened at one end of the stabilizing plate 15 facing the air intake pipe body 4, a plurality of springs 1602 are fixed on the inner wall of the inner cavity 1601, and a connecting plate 1603 is fixed to the other end of the plurality of springs 1602. The end of the connecting plate 1603 away from the spring 1602 passes through the inner cavity 1601 and fits against the outer wall of the air intake pipe body 4. The two ends of the connecting plate 1603 are fixed with a limiting block 17. Limiting grooves 18 matching the limiting blocks 17 are provided on both sides, a rotating shaft 14 is provided between the stud 11 and the stabilizing plate 15, and the two ends of the rotating shaft 14 are rotatably connected to the stabilizing plate 15 and the stud 11 respectively. A rotating plate 12 is fixed to the end of the stud 11 outside the ring 10, and a friction-increasing sleeve 13 is fixed to the outer wall of the rotating plate 12. A guide column 8 is fixed to the end of the first flange 3 facing the second flange 6, and a guide groove 9 matching the guide column 8 is provided on the end of the second flange 6 facing the first flange 3.

[0024] The effect achieved by the entire embodiment 2 is that, through the setting of the spring 1602, the connecting plate 1603 will always fit the two sides of the intake pipe body 4 under the thrust of the spring 1602, and when the intake pipe body 4 is displaced and tilted, the connecting plate 1603 and the spring 1602 will buffer the connection of the intake pipe body 4 to avoid it from suddenly tilting and being damaged, and through the setting of the stabilizing plate 15, the intake pipe body 4 is limited to avoid it from tilting significantly, and the stability is stronger. Through the setting of the guide column 8 and the guide groove 9, the docking installation of the first flange 3 and the second flange 6 is faster and more practical. By the user rotating the rotating plate 12, the stud 11 can be driven to rotate, thereby driving the stabilizing plate 15 to move, so that it can control the tilt angle of the intake pipe body 4.

[0025] Working principle: When the device is in use, the two intake pipe bodies 4 can be fixedly installed on the two ends of the bellows 1 through the arrangement of the first flange 3, the second flange 6 and the bolts 7. After installation, the user rotates the rotating plate 12 to drive the stud 11 to rotate, thereby driving the stabilizing plate 15 to move, so that it can control the inclination angle of the intake pipe body 4. Through the arrangement of the spring 1602, the connecting plate 1603 will always fit the two sides of the intake pipe body 4 under the thrust of the spring 1602. When the intake pipe body 4 is displaced and tilted, the connecting plate 1603 and the spring 1602 will buffer the connection of the intake pipe body 4 to avoid sudden tilting and damage. Moreover, through the arrangement of the stabilizing plate 15, the intake pipe body 4 is limited to avoid large tilting.

[0026] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A suction pipe movable connection device, comprising a bellows (1), characterized in that: Both ends of the bellows (1) are fixed with first seals (2), and the outer walls of the two first seals (2) are fixed with first flanges (3). Both ends of the bellows (1) are provided with an air intake pipe body (4), and the opposite ends of the two air intake pipe bodies (4) are fixed with second seals (5), and the outer walls of the two second seals (5) are fixed with second flanges (6). The first flange (3) and the second flange (6) are fixed to each other by bolts (7). The outer walls of the two first flanges (3) are fixed with friction sleeves (13), and the outer walls of the friction sleeves (13) are both threadedly connected with studs (11). One end of the two studs (11) located in the ring (10) is provided with a stabilizing plate (15), and the opposite ends of the two stabilizing plates (15) are provided with a buffer structure (16) for buffering and stabilizing the air intake pipe body (4).

2. The movable connection device for an air intake pipe according to claim 1, characterized in that: The buffer structure (16) includes an inner cavity (1601) provided at one end of the stabilizing plate (15) facing the air intake pipe body (4), a plurality of springs (1602) being fixed on the inner wall of the inner cavity (1601), a connecting plate (1603) being fixed to the other ends of the plurality of springs (1602), and an end of the connecting plate (1603) away from the springs (1602) passing through the inner cavity (1601) and being in contact with the outer wall of the air intake pipe body (4).

3. The movable connection device for an air intake pipe according to claim 2, characterized in that: Limit blocks (17) are fixed at both ends of the connecting plate (1603), and limiting grooves (18) matching the limiting blocks (17) are provided on both sides of the inner cavity (1601) in the stabilizing plate (15).

4. The movable connection device for an air intake pipe according to claim 2, characterized in that: A rotating shaft (14) is provided between the stud (11) and the stabilizing plate (15), and two ends of the rotating shaft (14) are rotatably connected to the stabilizing plate (15) and the stud (11), respectively.

5. The movable connection device for an air intake pipe according to claim 1, characterized in that: A rotating plate (12) is fixed to one end of the stud (11) outside the ferrule (10), and a friction-enhancing sleeve (13) is fixed to the outer wall of the rotating plate (12).

6. The movable connection device for an air intake pipe according to claim 1, characterized in that: A guide column (8) is fixed to one end of the first flange (3) facing the second flange (6), and a guide groove (9) matching the guide column (8) is provided on one end of the second flange (6) facing the first flange (3).

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