A sealing structure for connecting air conditioning pipes of a construction machine

Abstract

The utility model discloses an engineering machinery air conditioning pipeline connection sealing structure, including the connection outer tube, the one end of connection outer tube and the inside of one end of sleeve are engaged connection, the one end of connection outer tube is pasted with the one side of the spacing chuck that is arranged in the inside of sleeve through the first sealing washer, and the other end of sleeve is located in the spacing chuck other side and is provided with air conditioning pipeline body in the inside, and the one end of air conditioning pipeline body is passed through the spacing chuck and the first sealing washer and is engaged with the one end of connection outer tube in the middle, and the one end of connection outer tube is welded to have the positioning base plate on the outside, and the positioning base plate is connected with the connecting pressure plate that is arranged on the outside of sleeve through the mounting bolt and the mounting nut. The engineering machinery air conditioning pipeline connection sealing structure, through adopting the stable mode of multiple sealing connection, makes in use complex working condition, reduces the leakage while also being convenient for installation and removal, replaces the damaged part, improves the practicality of use.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, specifically a sealing structure for air conditioning pipeline connections in engineering machinery. Background Technology

[0002] During the operation of construction machinery (such as excavators, loaders, cranes, etc.), the air conditioning system is a key component to ensure the comfort of operators, and the connection and sealing performance of the air conditioning pipes directly affects the cooling efficiency and stability of the system.

[0003] Existing air conditioning pipe connection sealing structures for construction machinery mostly use a single rubber sealing ring or threaded seal, which relies on the bolt preload during installation. Under long-term vibration, the sealing ring is prone to displacement and compression attenuation, leading to seal failure. In addition, some connection structures are integrated designs, and if the seal is damaged, the entire pipe or joint needs to be replaced, increasing maintenance time and costs. To address these issues, existing equipment needs to be improved. Utility Model Content

[0004] The purpose of this utility model is to provide a sealing structure for air conditioning pipe connections in engineering machinery, in order to solve the problems mentioned in the background art. The existing sealing structures for air conditioning pipe connections in engineering machinery mostly use a single rubber sealing ring or threaded seal, which rely on the bolt preload during installation. Under long-term vibration, the sealing ring is prone to displacement and compression attenuation, leading to sealing failure. In addition, some connection structures are integrated designs, and after the seal is damaged, the entire pipe or joint needs to be replaced, which increases maintenance time and cost.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealing structure for air conditioning pipe connections in engineering machinery, including a connecting outer pipe,

[0006] One end of the connecting outer tube is engaged with the inside of one end of the connecting sleeve, and the one end of the connecting outer tube is attached to one side of the limiting chuck set in the middle of the inside of the connecting sleeve through the first sealing gasket. The other end of the connecting sleeve is provided with an air conditioning pipe body located on the other side of the limiting chuck, and one end of the air conditioning pipe body passes through the middle of the limiting chuck and the first sealing gasket and is engaged with the inside of one end of the connecting outer tube. At the same time, the limiting baffle set on the outside of the air conditioning pipe body is connected to the limiting chuck through multiple mounting screws. A positioning base plate is welded to the outside of the connecting sleeve near the connecting outer tube, and the positioning base plate is connected to the connecting pressure plate set on the outside of the connecting sleeve through mounting bolts and mounting nuts. At the same time, the connecting outer tube and the outside of the connecting sleeve are provided with reinforcement components.

[0007] Preferably, both the connecting outer tube and the connecting sleeve are made of stainless steel, and one end of the connection between the connecting outer tube and the connecting sleeve has a stepped bevel structure. At the same time, an elastic rubber sleeve is provided between one end of the connecting outer tube and one end of the connecting sleeve.

[0008] Preferably, a sealing rubber sleeve is provided between the inside of the other end of the connecting sleeve and the outside of the other end of the air conditioning pipe body, and the sealing rubber sleeve has a T-shaped structure. At the same time, a sealing cover is provided on the outside of the sealing rubber sleeve at the other end of the connecting sleeve. The inside of the sealing cover is threaded to the outside of the other end of the connecting sleeve, and the sealing cover is made of stainless steel.

[0009] Preferably, the first sealing gasket has anti-slip textures on both sides, and the first sealing gasket is made of silicone rubber material that is resistant to high and low temperatures. At the same time, multiple metal gaskets are equidistantly arranged inside the first sealing gasket.

[0010] Preferably, the elastic rubber sleeve and the sealing rubber sleeve have the same structure, and the elastic rubber sleeve includes a main sealing ring and an auxiliary sealing gasket. The main sealing ring is made of silicone rubber that is resistant to high and low temperatures, and the main sealing ring has an annular protrusion inside. The auxiliary sealing gasket is made of nitrile rubber and has a honeycomb structure.

[0011] Preferably, the reinforcement component includes a positioning seat, a connecting rod, a connecting seat, and a positioning block. The positioning seat is located outside the connecting outer tube. At the same time, one end of a plurality of connecting rods equidistantly arranged on the positioning seat is engaged with a rubber ferrule correspondingly arranged inside the connecting seat located outside the connecting sleeve. Each connecting rod has a positioning block on its inner side near the connecting seat end, and the positioning block is connected to the connecting seat by mounting screws.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the sealing structure for connecting air conditioning pipes in engineering machinery of this utility model adopts a multi-layer sealing connection to ensure stability, which makes it adaptable to complex working conditions during use, reduces leakage, and facilitates installation, disassembly, and replacement of damaged parts, thereby improving its practicality.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present invention;

[0015] Figure 2 This is a frontal cross-sectional view of the present invention.

[0016] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0017] In the diagram: 1. Connecting outer pipe; 2. Connecting sleeve; 3. Limiting chuck; 4. First sealing gasket; 5. Air conditioning pipe; 6. Limiting stop plate; 7. Sealing rubber sleeve; 8. Sealing outer cover; 9. Elastic rubber sleeve; 10. Positioning base plate; 11. Connecting pressure plate; 12. Positioning seat; 13. Connecting rod; 14. Connecting seat; 1401. Rubber ferrule; 15. Positioning block. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-3 This utility model provides a technical solution: a sealing structure for connecting air conditioning pipes in engineering machinery, based on... Figure 1 , Figure 2 and Figure 3 As shown, one end of the connecting outer tube 1 is internally engaged with one end of the connecting sleeve 2, and the other end of the connecting outer tube 1 is fitted to one side of the limiting chuck 3 set in the middle of the connecting sleeve 2 through the first sealing gasket 4. The first sealing gasket 4 improves the sealing performance of the connection between the connecting outer tube 1 and the limiting chuck 3. The other end of the connecting sleeve 2 is provided with the air conditioning pipe body 5 located on the other side of the limiting chuck 3, and one end of the air conditioning pipe body 5 passes through the middle of the limiting chuck 3 and the first sealing gasket 4 and is engaged with the inside of the connecting outer tube 1. The first sealing gasket 4 has anti-slip textures on both sides and is made of high and low temperature resistant silicone rubber. At the same time, multiple metal gaskets are equidistantly arranged inside the first sealing gasket 4 to improve the service life of the first sealing gasket 4, improve the sealing effect, and reduce the risk of leakage. Meanwhile, a limiting baffle 6 is provided on the outside of the air conditioning pipe body 5. Multiple mounting screws are connected to the limiting chuck 3. The mounting screws, limiting baffle 6, and limiting chuck 3 work together to facilitate the limiting and fixing of the air conditioning pipe body 5, improving the stability of the engagement between the air conditioning pipe body 5 and the connecting outer pipe 1. A sealing rubber sleeve 7 is provided between the inside of the other end of the connecting sleeve 2 and the outside of the other end of the air conditioning pipe body 5. The sealing rubber sleeve 7 has a T-shaped structure. At the same time, a sealing outer cover 8 is provided on the other end of the connecting sleeve 2 outside the sealing rubber sleeve 7. The inside of the sealing outer cover 8 is threaded to the outside of the other end of the connecting sleeve 2. The sealing outer cover 8 is made of stainless steel. The use of the sealing rubber sleeve 7 and the sealing outer cover 8 improves the stability of the connection between the air conditioning pipe body 5 and the other end of the connecting sleeve 2, and ensures the coaxiality of the air conditioning pipe body 5 and the connecting sleeve 2 when they are connected, avoiding sealing failure due to misalignment.

[0020] To further explain, both the connecting outer tube 1 and the connecting sleeve 2 are made of stainless steel, and one end of the connection between the connecting outer tube 1 and the connecting sleeve 2 has a stepped bevel structure. At the same time, an elastic rubber sleeve 9 is provided between one end of the connecting outer tube 1 and one end of the connecting sleeve 2 to further improve the sealing performance of the engagement between the connecting outer tube 1 and the connecting sleeve 2.

[0021] To further explain, the elastic rubber sleeve 9 and the sealing rubber sleeve 7 have the same structure. The elastic rubber sleeve 9 includes a main sealing ring and an auxiliary sealing gasket. The main sealing ring is made of silicone rubber that is resistant to high and low temperatures. At the same time, the main sealing ring has an annular protrusion inside to enhance the fit between the elastic rubber sleeve 9 and the sealing rubber sleeve 7 and the corresponding connecting outer pipe 1 and air conditioning pipe body 5. The auxiliary sealing gasket is made of nitrile rubber and has a honeycomb structure, which facilitates the improvement of the buffering and sealing performance at the connection between the connecting outer pipe 1 and the connecting sleeve 2, as well as at the connection between the air conditioning pipe body 5 and the connecting sleeve 2.

[0022] according to Figure 1 and Figure 2 As shown, a positioning base plate 10 is welded to the outer side of the connecting sleeve 2 near the connecting outer tube 1. The positioning base plate 10 is connected to the connecting pressure plate 11 correspondingly provided on the outer side of the connecting sleeve 2 by mounting bolts and mounting nuts. The mounting bolts and mounting nuts facilitate the connection and fixation of the positioning base plate 10 and the connecting pressure plate 11, improving the stability of the connection between the connecting sleeve 2 and the connecting outer tube 1. At the same time, reinforcement components are provided on the outer side of the connecting outer tube 1 and the connecting sleeve 2.

[0023] Specifically, the reinforcement components include a positioning seat 12, a connecting rod 13, a connecting seat 14, and a positioning block 15. The positioning seat 12 is located outside the connecting outer tube 1. At the same time, one end of a plurality of connecting rods 13 equidistantly arranged on the positioning seat 12 engages with a rubber sleeve 1401 correspondingly arranged inside the connecting seat 14 located outside the connecting sleeve 2. A positioning block 15 is provided on the inner side of the end of each connecting rod 13 near the connecting seat 14, and the positioning block 15 is connected to the connecting seat 14 by a mounting screw. By moving the positioning seat 12, the connecting rod 13 engages with the corresponding rubber sleeve 1401 inside the connecting seat 14. Then, by rotating the mounting screw, the positioning block 15 is fixed on the connecting seat 14, thereby making it difficult for the positioning seat 12, connecting rod 13, and connecting seat 14 to move, thus improving the tightness and stability of the connection between the connecting sleeve 2 and the connecting outer tube 1.

[0024] To further explain, the positioning seat 12 has multiple grooves equidistantly spaced on the side near the connecting pressure plate 11, and the grooves are engaged with the larger end of the corresponding mounting bolt. Meanwhile, the mounting nut threaded to the other end of the mounting bolt is located inside the corresponding placement groove on the positioning base plate 10, thereby improving the stability of the connection during use by preventing the mounting bolt and mounting nut from shifting their positions.

[0025] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sealing structure for air conditioning pipe connections in engineering machinery, comprising an outer connecting pipe (1), characterized in that: One end of the connecting outer tube (1) is engaged with the inside of one end of the connecting sleeve (2), and one end of the connecting outer tube (1) is attached to one side of the limiting chuck (3) set in the middle of the inside of the connecting sleeve (2) through the first sealing gasket (4). The other end of the connecting sleeve (2) is provided with an air conditioning pipe body (5) located on the other side of the limiting chuck (3), and one end of the air conditioning pipe body (5) passes through the middle of the limiting chuck (3) and the first sealing gasket (4) and is engaged with the inside of one end of the connecting outer tube (1). At the same time, the limiting baffle (6) set on the outside of the air conditioning pipe body (5) is connected to the limiting chuck (3) through multiple mounting screws. The connecting sleeve (2) is welded to the outside of one end of the connecting outer tube (1), and the positioning base plate (10) is connected to the connecting pressure plate (11) set on the outside of the connecting sleeve (2) through mounting bolts and mounting nuts. At the same time, the connecting outer tube (1) and the connecting sleeve (2) are provided with reinforcement components.

2. The sealing structure for connecting air conditioning pipes in engineering machinery as described in claim 1, characterized in that: Both the connecting outer tube (1) and the connecting sleeve (2) are made of stainless steel. One end of the connection between the connecting outer tube (1) and the connecting sleeve (2) is a stepped bevel structure. At the same time, an elastic rubber sleeve (9) is provided between one end of the connecting outer tube (1) and one end of the connecting sleeve (2).

3. The sealing structure for connecting air conditioning pipes in engineering machinery as described in claim 1, characterized in that: A sealing rubber sleeve (7) is provided between the inner end of the connecting sleeve (2) and the outer end of the air conditioning pipe body (5), and the sealing rubber sleeve (7) is a T-shaped structure. At the same time, a sealing cover (8) is provided on the outer side of the sealing rubber sleeve (7) at the other end of the connecting sleeve (2). The inner side of the sealing cover (8) is threadedly connected to the outer side of the other end of the connecting sleeve (2), and the sealing cover (8) is made of stainless steel.

4. The sealing structure for connecting air conditioning pipes in engineering machinery as described in claim 1, characterized in that: The first sealing gasket (4) has anti-slip textures on both sides, and the first sealing gasket (4) is made of silicone rubber that is resistant to high and low temperatures. At the same time, multiple metal gaskets are equidistantly arranged inside the first sealing gasket (4).

5. The sealing structure for connecting air conditioning pipes in engineering machinery as described in claim 2, characterized in that: The elastic rubber sleeve (9) and the sealing rubber sleeve (7) have the same structure. The elastic rubber sleeve (9) includes a main sealing ring and an auxiliary sealing gasket. The main sealing ring is made of silicone rubber that is resistant to high and low temperatures. At the same time, the main sealing ring has an annular protrusion inside. The auxiliary sealing gasket is made of nitrile rubber and has a honeycomb structure.

6. The sealing structure for connecting air conditioning pipes in engineering machinery as described in claim 1, characterized in that: The reinforcement assembly includes a positioning seat (12), a connecting rod (13), a connecting seat (14), and a positioning block (15). The positioning seat (12) is located outside the connecting outer tube (1). At the same time, one end of a plurality of connecting rods (13) equidistantly arranged on the positioning seat (12) is engaged with a rubber sleeve (1401) correspondingly arranged inside the connecting seat (14) on the outside of the connecting sleeve (2). A positioning block (15) is provided on the inner side of the end of each connecting rod (13) near the connecting seat (14), and the positioning block (15) is connected to the connecting seat (14) by mounting screws.

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