Engine flange structure

Abstract

The utility model discloses an engine flange structure which is applied to the field of engine pipeline connection and comprises a top disc and a bottom disc, the top disc and the bottom disc are arranged in a contact mode, connecting cylinders are fixedly connected in the top disc and the bottom disc, and a positioning mechanism is arranged between the contact faces of the top disc and the bottom disc. By arranging the top disc, the bottom disc, the connecting cylinders and the positioning mechanism, during use, the connecting cylinders on the top disc and the bottom disc can be connected with various pipelines firstly, then the positioning mechanism can position the top disc and the bottom disc, the top disc and the bottom disc can be conveniently aligned, and the area of a limiting groove and the area of a limiting block are far larger than that of a threaded hole; therefore, alignment is carried out in the mode that the limiting blocks enter the limiting grooves, and the bottom disc and the top disc can be aligned more conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of engine pipeline connection, and in particular relates to an engine flange structure. Background Art

[0002] In modern industry, the engine is the core power component of various mechanical equipment and vehicles. Its performance and reliability directly affect the operating efficiency and service life of the entire system. The engine flange structure is a key component connecting the engine with various pipelines and equipment. Its design rationality and manufacturing quality are directly related to the system's sealing, safety and maintenance convenience.

[0003] The Chinese utility model patent currently announced with the number CN218407641 U discloses an engine intake duct flange connection structure, which is provided with an air intake port and a main intake pipe, the bottom end of the main intake pipe is fixedly connected to the right side of the upper end of the auxiliary intake pipe, the bottom ends of the auxiliary intake pipes are fixedly connected to the inner walls of several sleeves, the bottom ends of the sleeves are fixedly connected to the middle part of the upper end of the first diamond flange, the lower end of the first diamond flange is provided with a second diamond flange, the bottom ends of the second diamond flanges are respectively fixedly connected to the upper end of the connecting plate, the bottom ends of the first diamond flanges are fixedly connected to the first rubber block, and the upper ends of the second diamond flanges are fixedly connected to the second rubber block. The first diamond flange and the second diamond flange are fixedly connected to the connecting plate by second bolts, so that the first rubber block and the second rubber block are squeezed to increase the air tightness at the connection between the first diamond flange and the second diamond flange.

[0004] When the engine is installed with various pipes, the installation space is narrow. This patent requires that the threaded holes on the two flanges be aligned before they can be installed and fixed with bolts. However, the patent lacks a positioning structure, and it is not easy to align the two flanges in a narrow space, which increases the installation time. Utility Model Content

[0005] The purpose of the utility model is to provide an engine flange structure, which solves the problem of an existing engine flange structure that requires the threaded holes on the two flanges to be aligned before they can be installed and fixed by bolts, but lacks a positioning structure, making it difficult to align the two flanges in a narrow space, thereby increasing the installation time.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: an engine flange structure, comprising a top plate and a bottom plate, the top plate and the bottom plate being arranged in contact with each other, a connecting tube being fixedly connected to each other, and a positioning mechanism being provided between the contact surfaces of the top plate and the bottom plate;

[0007] The positioning mechanism includes a positioning groove, a positioning block, a spring groove, a sliding groove, a spring, a limit block and a limit groove. The positioning groove is opened on the upper surface of the chassis, and the positioning block is welded to the lower surface of the top plate. The positioning groove and the positioning block are uniform in number and are correspondingly arranged. The spring groove is opened on both sides of the inner wall of the positioning groove, and the sliding groove is opened at one end of the spring groove. The spring is fixedly connected to the inside of the spring groove, and the limit block is slidably connected to the sliding groove. The limit block is fixedly connected to one end of the spring, and the limit groove is opened on the positioning block. The limit block and the limit groove are correspondingly arranged.

[0008] The above technical solution is adopted, by arranging a top plate, a bottom plate, a connecting tube and a positioning mechanism. When in use, first, the connecting tubes on the top plate and the bottom plate can be connected to various pipes, and then the positioning mechanism can position the top plate and the bottom plate, so as to facilitate the alignment of the top plate and the bottom plate, wherein the positioning mechanism includes a positioning groove, a positioning block, a spring groove, a sliding groove, a spring, a limit block and a limit groove. When in use, first, the top plate and the bottom plate are brought close to each other so that the positioning block enters the positioning groove. At this time, the side wall of the positioning block can squeeze the limit block so that the limit block slides in the sliding groove, and then squeeze the spring so that the spring is compressed in the spring groove. When the limit block contacts the limit groove, the spring recovers its deformation, which can enable the limit block to enter the limit groove. When the sound of the limit block hitting the inner wall of the limit groove is heard, it indicates that the bottom plate and the top plate are fully contacted and aligned. The area of ​​the limit groove and the limit block is much larger than the area of ​​the threaded hole. Therefore, alignment is performed by the limit block entering the limit groove, which can make it more convenient to align the bottom plate and the top plate.

[0009] Furthermore: an airtight cavity is provided on the lower surface of the top plate and the upper surface of the bottom plate, a first sealing ring is fixedly connected to the airtight cavity on the lower surface of the top plate, a second sealing ring is fixedly connected to the airtight cavity on the upper surface of the bottom plate, a groove is provided in the first sealing ring, a snap ring is provided on the second sealing ring, and the snap ring and the groove are provided correspondingly.

[0010] By adopting the above technical solution, an airtight cavity, a first sealing ring, a second sealing ring, a groove and a snap ring are set up. When the bottom plate and the top plate are fully contacted and aligned, the bottom plate and the top plate form an airtight cavity. Then the first sealing ring and the second sealing ring in the airtight cavity contact each other, and by squeezing, the snap ring can enter the groove, so that the connection between the bottom plate and the top plate can be sealed.

[0011] Furthermore: the cross-section of the connecting tube is trapezoidal.

[0012] By adopting the above technical solution, by setting the shape of the connecting tube, when in use, the cross section of the connecting tube is designed to be trapezoidal, which can connect pipes with different inner diameters and improve practicality.

[0013] Furthermore: the cross section of the groove is set to be an inverted trapezoid, the cross section of the clamping ring is set to be a regular trapezoid, and the cross section area of ​​the clamping ring is larger than the cross section area of ​​the groove.

[0014] By adopting the above technical solution, by setting the shapes of the groove and the snap ring, when in use, the groove is designed to be an inverted trapezoidal shape, and the snap ring is designed to be a right trapezoidal shape. The snap ring can enter the groove through the extrusion force, and the cross-sectional area of ​​the snap ring is larger than the cross-sectional area of ​​the groove. While the snap ring fills the groove, the groove can cause the snap ring to deform, further improving the sealing performance.

[0015] Furthermore: a smooth portion is provided at one end of the limiting block close to the limiting groove.

[0016] By adopting the above technical solution and providing the rounded portion, the rounded portion on the limit block can decompose the direction of the extrusion force on the limit block during use, making it easier for the limit block to enter or exit the limit groove.

[0017] Furthermore: both ends of the bottom plate and the top plate are fixedly connected with extension plates, threaded holes are opened on the extension plates, and sealing bolts are arranged in the threaded holes.

[0018] By adopting the above technical solution, an extension plate, a threaded hole and a sealing bolt are set. When in use, the extension plate is fixed on the chassis and the top plate. When the top plate and the chassis are fully contacted and aligned, the sealing bolt can enter the threaded hole to fix the chassis and the top plate.

[0019] Furthermore: a sealing gasket is provided on the upper surface of the chassis, and the sealing gasket matches the shape of the upper surface of the chassis.

[0020] By adopting the above technical solution and providing a sealing gasket, the sealing gasket can further improve the sealing performance after the bottom plate and the top plate come into contact during use.

[0021] Furthermore: a chamfered plate is provided between the extension plate and the chassis to reduce stress concentration.

[0022] By adopting the above technical solution and providing the chamfered plate, the chamfered plate can reduce stress concentration during use and can lower the stress level that the sealing bolt bears after being tightened.

[0023] In summary, the present invention has the following beneficial effects:

[0024] By setting a positioning mechanism, when in use, first the connecting tubes on the top plate and the bottom plate can be connected with various pipes, and then the positioning mechanism can position the top plate and the bottom plate, so as to facilitate the alignment of the top plate and the bottom plate, wherein the positioning mechanism includes a positioning groove, a positioning block, a spring groove, a sliding groove, a spring, a limit block and a limit groove. When in use, first the top plate and the bottom plate are brought close to each other so that the positioning block enters the positioning groove. At this time, the side wall of the positioning block can squeeze the limit block so that the limit block slides in the sliding groove, and then squeeze the spring so that the spring is compressed in the spring groove. When the limit block contacts the limit groove, the spring recovers its deformation, which can enable the limit block to enter the limit groove. When the sound of the limit block hitting the inner wall of the limit groove is heard, it indicates that the bottom plate and the top plate are fully contacted and aligned.

[0025] By setting an airtight cavity, a first sealing ring, a second sealing ring, a clamping groove and a clamping ring, when the bottom plate and the top plate are completely in contact and aligned, the bottom plate and the top plate form an airtight cavity, and then the first sealing ring and the second sealing ring in the airtight cavity contact each other, and by squeezing, the clamping ring can enter the clamping groove, and the connection between the bottom plate and the top plate can be sealed.

[0026] Based on the above improvements, the overall technical effect achieved by this device is that the area of ​​the limit groove and the limit block is much larger than the area of ​​the threaded hole. Therefore, alignment is performed by the limit block entering the limit groove, which can make it more convenient to align the chassis and top plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 2 It is a left view of the utility model;

[0029] Figure 3 This utility model Figure 2 Stereoscopic cross-section at AA in the middle;

[0030] Figure 4 This is a structural diagram of the second sealing ring, the clamping groove and the clamping ring of the utility model;

[0031] Figure 5 It is a structural schematic diagram of the top plate, extension plate and chamfered plate of the utility model;

[0032] Figure 6 This utility model Figure 5 Enlarged view of point A in the middle.

[0033] In the figure, 1. top plate; 2. bottom plate; 3. connecting tube; 4. positioning mechanism; 5. airtight chamber; 6. first sealing ring; 7. second sealing ring; 8. retaining groove; 9. retaining ring; 10. smooth part; 11. extension plate; 12. threaded hole; 13. sealing bolt; 14. sealing gasket; 15. chamfered plate; 401. positioning groove; 402. positioning block; 403. spring groove; 404. sliding groove; 405. spring; 406. limit block; 407. limit groove. DETAILED DESCRIPTION

[0034] The present invention will be described in further detail below with reference to the accompanying drawings.

[0035] Example:

[0036] See also Figures 1-6 The utility model provides a technical solution: an engine flange structure, including a top plate 1 and a bottom plate 2, the top plate 1 and the bottom plate 2 are arranged in contact, a connecting tube 3 is fixedly connected to the top plate 1 and the bottom plate 2, and a positioning mechanism 4 is provided between the contact surfaces of the top plate 1 and the bottom plate 2;

[0037] The positioning mechanism 4 includes a positioning groove 401, a positioning block 402, a spring groove 403, a sliding groove 404, a spring 405, a limit block 406 and a limit groove 407. The positioning groove 401 is opened on the upper surface of the chassis 2, and the positioning block 402 is welded to the lower surface of the top plate 1. The positioning groove 401 and the positioning block 402 are uniform in number and are correspondingly arranged. The spring groove 403 is opened on both sides of the inner wall of the positioning groove 401, and the sliding groove 404 is opened at one end of the spring groove 403. The spring 405 is fixedly connected to the inside of the spring groove 403, and the limit block 406 is slidably connected to the sliding groove 404. The limit block 406 is fixedly connected to one end of the spring 405. The limit groove 407 is opened on the positioning block 402, and the limit block 406 and the limit groove 407 are correspondingly arranged.

[0038] By providing the top plate 1, the bottom plate 2, the connecting tube 3 and the positioning mechanism 4, when in use, first the connecting tube 3 on the top plate 1 and the bottom plate 2 can be connected to various pipes, and then the positioning mechanism 4 can position the top plate 1 and the bottom plate 2, so as to facilitate alignment of the top plate 1 and the bottom plate 2;

[0039] When the locking cam 406 is in contact with the locking groove 407, the spring 405 recovers its deformation, allowing the locking cam 406 to enter the locking groove 407. When the sound of the locking cam 406 hitting the inner wall of the locking groove 407 is heard, it indicates that the bottom plate 2 and the top plate 1 are completely in contact and aligned. The area of ​​the locking groove 407 and the locking cam 406 are much larger than the area of ​​the threaded hole 12. Therefore, the locking cam 406 is aligned by entering the locking groove 407, which can make it easier to align the bottom plate 2 and the top plate 1.

[0040] refer to Figure 4 , an airtight cavity 5 is provided on the lower surface of the top plate 1 and the upper surface of the bottom plate 2, a first sealing ring 6 is fixedly connected to the airtight cavity 5 on the lower surface of the top plate 1, and a second sealing ring 7 is fixedly connected to the airtight cavity 5 on the upper surface of the bottom plate 2, a card groove 8 is provided in the first sealing ring 6, and a snap ring 9 is provided on the second sealing ring 7, and the snap ring 9 and the card groove 8 are correspondingly arranged. By setting the airtight cavity 5, the first sealing ring 6, the second sealing ring 7, the card groove 8 and the snap ring 9, when the bottom plate 2 and the top plate 1 are fully contacted and aligned, the bottom plate 2 and the top plate 1 form an airtight cavity 5, and then the first sealing ring 6 and the second sealing ring 7 in the airtight cavity 5 contact each other, and by squeezing, the snap ring 9 can enter the card groove 8, so that the connection between the bottom plate 2 and the top plate 1 can be sealed.

[0041] refer to Figure 1 The cross section of the connecting tube 3 is set to be trapezoidal. By setting the shape of the connecting tube 3, when in use, the cross section of the connecting tube 3 is designed to be trapezoidal, which can connect pipes with different inner diameters and improve practicality.

[0042] refer to Figure 4 The cross section of the slot 8 is set to an inverted trapezoid, and the cross section of the snap ring 9 is set to a regular trapezoid. The cross section area of ​​the snap ring 9 is larger than the cross section area of ​​the slot 8. By setting the shapes of the slot 8 and the snap ring 9, when in use, the slot 8 is designed to be an inverted trapezoid, and the snap ring 9 is designed to be a regular trapezoid. Through the extrusion force, the snap ring 9 can enter the slot 8, and the cross section area of ​​the snap ring 9 is larger than the cross section area of ​​the slot 8. When the snap ring 9 fills the slot 8, the slot 8 can cause the snap ring 9 to deform, thereby further improving the sealing performance.

[0043] refer to Figure 6A smooth portion 10 is provided at one end of the limit block 406 close to the limit groove 407. By providing the smooth portion 10, when in use, the smooth portion 10 on the limit block 406 can decompose the direction in which the limit block 406 is subjected to the extrusion force, which can facilitate the limit block 406 to enter or exit the limit groove 407.

[0044] refer to Figure 1 and Figure 4 , the two ends of the chassis 2 and the top plate 1 are fixedly connected with an extension plate 11, a threaded hole 12 is opened on the extension plate 11, and a sealing bolt 13 is provided in the threaded hole 12. By setting the extension plate 11, the threaded hole 12 and the sealing bolt 13, when in use, the extension plate 11 is fixed to the chassis 2 and the top plate 1. When the top plate 1 and the chassis 2 are fully contacted and aligned, the sealing bolt 13 can enter the threaded hole 12 to fix the chassis 2 and the top plate 1.

[0045] refer to Figure 4 A sealing gasket 14 is provided on the upper surface of the chassis 2, and the sealing gasket 14 is consistent with the shape of the upper surface of the chassis 2. By providing the sealing gasket 14, when in use, the sealing gasket 14 can further improve the sealing performance after the chassis 2 and the top plate 1 are in contact.

[0046] refer to Figure 5 A chamfered plate 15 is provided between the extension plate 11 and the chassis 2 for reducing stress concentration. By providing the chamfered plate 15, when in use, the chamfered plate 15 can reduce stress concentration and reduce the stress level that the sealing bolt 13 bears after being tightened.

[0047] Brief description of the usage process:

[0048] When in use, first bring the top plate 1 and the bottom plate 2 closer together so that the positioning block 402 enters the positioning groove 401. At this time, the side wall of the positioning block 402 can squeeze the limit block 406, so that the limit block 406 slides in the sliding groove 404, and then squeezes the spring 405, so that the spring 405 is compressed in the spring groove 403. When the limit block 406 contacts the limit groove 407, the spring 405 recovers its deformation, which can make the limit block 406 enter the limit groove 407. When the limit block 406 is in contact with the limit groove 407, the spring 405 recovers its deformation, which can make the limit block 406 enter the limit groove 407. When the block 406 hits the inner wall of the limiting groove 407, it indicates that the bottom plate 2 and the top plate 1 are completely in contact and aligned. The area of ​​the limiting groove 407 and the limiting block 406 is much larger than the area of ​​the threaded hole 12. Therefore, the limiting block 406 enters the limiting groove 407 to align the bottom plate 2 and the top plate 1, which is more convenient. The smooth portion 10 on the limiting block 406 can decompose the direction of the extrusion force on the limiting block 406, which can facilitate the limiting block 406 to enter or leave the limiting groove 407.

[0049] Then, when the bottom plate 2 and the top plate 1 are completely in contact and aligned, the bottom plate 2 and the top plate 1 form an airtight cavity 5, and then the first sealing ring 6 and the second sealing ring 7 in the airtight cavity 5 contact each other, and through extrusion, the snap ring 9 can enter the groove 8, so that the connection between the bottom plate 2 and the top plate 1 can be sealed. The groove 8 is designed to be an inverted trapezoidal shape, and the snap ring 9 is designed to be a regular trapezoidal shape. Through the extrusion force, the snap ring 9 can enter the groove 8, and the cross-sectional area of ​​the snap ring 9 is larger than the cross-sectional area of ​​the groove 8. When the snap ring 9 fills the groove 8, the groove 8 can cause the snap ring 9 to deform, further improving the sealing performance;

[0050] Finally, the extension plate 11 is fixed to the bottom plate 2 and the top plate 1. When the top plate 1 and the bottom plate 2 are completely in contact and aligned, the sealing bolts 13 can enter the threaded holes 12 to fix the bottom plate 2 and the top plate 1.

[0051] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. An engine flange structure, comprising a top plate (1) and a bottom plate (2), characterized in that: The top plate (1) and the bottom plate (2) are arranged in contact with each other, a connecting tube (3) is fixedly connected to each of the top plate (1) and the bottom plate (2), and a positioning mechanism (4) is provided between the contact surfaces of the top plate (1) and the bottom plate (2); The positioning mechanism (4) comprises a positioning groove (401) and a positioning block (402). The positioning groove (401) is provided on the upper surface of the bottom plate (2), and the positioning block (402) is welded to the lower surface of the top plate (1). The positioning groove (401) and the positioning block (402) are uniformly provided in two and are arranged correspondingly. The spring groove (403) is provided on both sides of the inner wall of the positioning groove (401). The sliding groove (404) is provided at one end of the spring groove (403). The spring (405) is fixedly connected to the inside of the spring groove (403). The limiting block (406) is slidably connected to the sliding groove (404). The limiting block (406) is fixedly connected to one end of the spring (405). The limiting groove (407) is provided on the positioning block (402). The limiting block (406) and the limiting groove (407) are arranged correspondingly.

2. The engine flange structure according to claim 1, characterized in that: An airtight cavity (5) is provided on the lower surface of the top plate (1) and the upper surface of the bottom plate (2); a first sealing ring (6) is fixedly connected to the airtight cavity (5) on the lower surface of the top plate (1); a second sealing ring (7) is fixedly connected to the airtight cavity (5) on the upper surface of the bottom plate (2); a retaining groove (8) is provided in the first sealing ring (6); a retaining ring (9) is provided on the second sealing ring (7); and the retaining ring (9) and the retaining groove (8) are correspondingly arranged.

3. The engine flange structure according to claim 1, characterized in that: The cross sections of the connecting cylinders (3) are all arranged in a trapezoidal shape.

4. The engine flange structure according to claim 2, characterized in that: The cross section of the clamping groove (8) is in the shape of an inverted trapezoid, the cross section of the clamping ring (9) is in the shape of a regular trapezoid, and the cross section area of ​​the clamping ring (9) is larger than the cross section area of ​​the clamping groove (8).

5. The engine flange structure according to claim 1, characterized in that: A smooth portion (10) is provided at one end of the limiting block (406) close to the limiting groove (407).

6. The engine flange structure according to claim 1, characterized in that: An extension plate (11) is fixedly connected to both ends of the bottom plate (2) and the top plate (1). A threaded hole (12) is provided on the extension plate (11), and a sealing bolt (13) is provided in the threaded hole (12).

7. The engine flange structure according to claim 1, characterized in that: A sealing gasket (14) is provided on the upper surface of the chassis (2), and the sealing gasket (14) matches the shape of the upper surface of the chassis (2).

8. The engine flange structure according to claim 6, characterized in that: A chamfered plate (15) for reducing stress concentration is provided between the extension plate (11) and the chassis (2).

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