Y-shaped intake manifold structure

Abstract

The invention discloses a Y-shaped intake manifold structure, and relates to the field of automobile engine accessories, the Y-shaped intake manifold structure comprises a manifold main body and a support frame, the manifold main body comprises a connecting pipe, and two ends of the connecting pipe are fixedly communicated with a second common air passage and a first common air passage. In the design of the air passage system, the first air passage and the second air passage are independent air passages before intersection and form the shared air passage after intersection, the air flow coordination is ensured, the length of the center line of the shared air passage exceeds 80 mm so as to ensure uniform flow, the left air passage group and the right air passage group in the air passage system are symmetrically arranged, the air flow is optimized, and the flow loss is reduced; key support is provided by matching of the first movable plate and rotation of the special-shaped gear, stable positioning of the shared air channel is ensured, and the supporting mechanism not only optimizes an air flow path and improves the efficiency of an air inlet system, but also simplifies the installation process of the air inlet manifold, prevents movement or inclination in the installation process, and ensures accurate alignment of a gasket and a contact surface.

Description

Technical Field

[0001] The invention relates to the technical field of automobile engine accessories, in particular to a Y-shaped intake manifold structure. Background Art

[0002] The intake manifold is located between the throttle and the engine intake valve. It is called a manifold because after the air enters the throttle and passes through the manifold for buffering, the air flow path diverges here, corresponding to the number of engine cylinders. For example, a four-cylinder engine has four paths, and a five-cylinder engine has five paths, which guide the air into each cylinder separately. The gas flow characteristics in the intake system are extremely complex, including the speed of the air flow, pressure fluctuations, and vortices. These characteristics directly affect the engine's charging efficiency, that is, the mixing of air and fuel in the cylinder. Improving the charging efficiency can significantly improve the engine's power and fuel economy.

[0003] For example, the "intake manifold structure" with publication number: CN112922755B includes an intake manifold, which defines a plurality of branch channels, the plurality of branch channels are connected to corresponding intake ports of an internal combustion engine arranged in the direction of its cylinder bank, and the intake manifold is provided with an additional gas introduction port connected to the corresponding branch channels; and an additional gas introduction channel forming member, which is attached to the intake manifold and defines an additional gas inlet and an additional gas introduction channel that connects the additional gas inlet with the corresponding additional gas introduction port, wherein the additional gas introduction channel forming member extends across the branch channels and is provided with a guide wall, which is used to define the additional gas introduction channel in cooperation with the outer surface of the intake manifold and the inner surface of the additional gas introduction channel forming member.

[0004] However, in the prior art, in a naturally aspirated engine, the working state of the intake manifold is directly affected by the throttle opening. When the throttle opening is small, the throttle is closed and the intake flow rate is reduced, which leads to insufficient air supply in the cylinder. At the same time, the vacuum degree in the intake manifold increases. The high vacuum degree indicates that the pressure in the intake manifold is lower than the atmospheric pressure. This state often limits the maximum power output and acceleration response of the engine, because the insufficient air flow leads to an incomplete combustion process, and the intake manifold is easy to be difficult to accurately position during installation due to the lack of stable support, which leads to incomplete or unstable docking between the intake manifold and other engine components. Summary of the invention

[0005] The purpose of the present invention is to provide a Y-type intake manifold structure to solve the problem raised in the above-mentioned background technology that in a naturally aspirated engine, a small throttle opening leads to a reduction in intake flow, insufficient air in the cylinder, an increase in the vacuum in the intake manifold, and limited engine power and acceleration response due to incomplete combustion.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a Y-shaped intake manifold structure, comprising a manifold body and a support frame, the manifold body comprising a connecting pipe, both ends of the connecting pipe are fixedly connected with a second common air passage and a first common air passage, two supporting mechanisms are symmetrically installed on the inner side of the top of the support frame, one end of the connecting pipe is provided with a connecting mechanism, one end of the first common air passage is respectively fixedly connected with air passage one and air passage two, and one end of the second common air passage is respectively fixedly connected with air passage three and air passage four; The camming mechanism comprises two first movable plates, and the two first movable plates are fixedly connected to a rotating rod at the bottom ends of the two first movable plates, one of the rotating rods being fixedly connected to a second special-shaped gear on an outer surface of the other rotating rod, the first special-shaped gear is meshed with the second special-shaped gear, a limiting groove is provided on an outer wall of the first movable plate, a limiting block is slidably connected to the inner side of the limiting groove, and the outer surface of the limiting block is fixedly connected to the second movable plate, and the top side wall of the second movable plate is rotatably connected to a driving rod, the bottom end of the driving rod is rotatably connected to a transmission rod, and the bottom end of the transmission rod is rotatably connected to the inner wall of the supporting frame. One side of the middle of the transmission rod is fixedly connected to the first center rod, the outer surface of one end of the first center rod is rotatably connected to the second linkage rod, the top end of the second linkage rod is rotatably connected to the swing rod, the middle of the swing rod is rotatably connected to the first linkage rod, the top end of the first linkage rod is rotatably connected to the side wall of the first movable plate, and one side of the bottom end of the swing rod is fixedly connected to the second center rod.

[0007] Preferably, one end of the second center rod is rotatably connected to the inner wall of the support frame, and one end of the two rotating rods are rotatably connected to the inner wall of the support frame.

[0008] Preferably, one end of one of the rotating rods passes through the support frame, and a handle is provided on the side wall of the support frame, and the handle is fixedly connected to one of the rotating rods.

[0009] Preferably, the connecting mechanism includes a first connecting sleeve and a second connecting sleeve, connecting pipes are installed on the inner sides of the second connecting sleeve and the first connecting sleeve, a first internal thread is opened on the inner side of one end of the first connecting sleeve, a threaded pipe is threadedly connected to the inner side of the first internal thread, one end of the threaded pipe is fixedly connected to the connecting pipe, and the threaded pipe is connected to one of the connecting pipes.

[0010] Preferably, the two connecting pipes are connected, and a second sealing groove is formed on the outer surface of one end of the connecting pipe, and a second sealing ring is installed inside the second sealing groove.

[0011] Preferably, the middle parts of the inner cavities of the second connecting sleeve and the first connecting sleeve are fixedly connected with limiting sleeves, and the limiting sleeves are sleeved on the outer surface of the connecting pipe.

[0012] Preferably, a first spring is installed between the connecting pipe and the limiting sleeve, and the first spring is sleeved on the outer surface of the connecting pipe.

[0013] Preferably, a movable sleeve is sleeved on the outer surface of the second connecting sleeve, a sliding groove is provided on the outer surface of one end of the second connecting sleeve, a second spring is installed inside the sliding groove, and a convex ring is fixedly connected to the inner side of the movable sleeve.

[0014] Preferably, a through hole is provided on the outer surface of the second connecting sleeve, a first sealing groove is provided on the inner side of one end of the second connecting sleeve, and a first groove is provided on the outer surface of the middle portion of the first connecting sleeve.

[0015] Preferably, a first sealing ring is installed on the inner side of the first sealing groove, a limiting ball is installed on the inner side of the through hole, the limiting ball matches the first groove, and a second internal thread is provided on the inner side of one end of the second connecting sleeve.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, in the design of the airway system, airway one and airway two are independent airways before they intersect, and form a common airway after they intersect to ensure the coordination of gas flow. The centerline length of the common airway exceeds 80 mm to ensure uniform flow. The left airway group and the right airway group in the airway system are symmetrically arranged to optimize airflow and reduce flow losses. The cooperation of the first movable plate and the rotation of the special-shaped gear provide key support to ensure the stable positioning of the common airway. This support mechanism not only optimizes the airflow path and improves the efficiency of the intake system, but also simplifies the installation process of the intake manifold, prevents movement or tilting during installation, and ensures accurate alignment of the gasket with the contact surface.

[0017] 2. In the present invention, the two first movable plates rotate synchronously, and the swing arm is driven by the first linkage rod to ensure the consistency of the action, and the rotation of the swing arm is transmitted to the transmission rod to make it movable. The transmission rod is fixed to the support frame to provide stable support and exert force on the driving rod at the same time. The driving rod accurately limits the first common airway and the second common airway through the limit block to prevent the system from being skewed or misaligned. The limit block slides in the limit groove of the first movable plate to keep the top of the airway stable, effectively supporting and adjusting the structure of the manifold body, improving the flexibility and adaptability of the system, reducing the deviation caused by vibration or operating errors, ensuring high-precision operation under various working conditions, and thereby improving the reliability and safety of the overall operation.

[0018] 3. In the present invention, one end of the first connecting sleeve is threadedly connected to the threaded pipe to provide a stable foundation. Then, the first connecting sleeve is inserted into the second connecting sleeve. During the process, the convex ring slides and compresses the second spring. The insertion action squeezes the limiting ball to make it move in the through hole. When the connecting pipes are docked, the first sealing ring is tightly closed to prevent leakage. After the movable sleeve is loosened, the elastic effect makes the connection more stable. Finally, the first groove is aligned with the through hole, and the limiting ball is firmly positioned to complete the connection and fixation. Through the cooperation of threaded connection, spring compression, limiting ball positioning and the first sealing ring, this multiple locking mechanism effectively improves the firmness of the connection and the sealing of the system, prevents leakage, ensures the stability and performance of the system, and reduces loosening caused by vibration or external factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a Y-type intake manifold structure of the present invention; Figure 2 It is a partial structural schematic diagram of a Y-type intake manifold structure of the present invention; Figure 3 It is a structural schematic diagram of a supporting mechanism in a Y-shaped intake manifold structure of the present invention; Figure 4 It is a schematic diagram of the split structure of a support mechanism in a Y-type intake manifold structure of the present invention; Figure 5 It is a structural schematic diagram of a manifold body of a Y-type intake manifold structure of the present invention; Figure 6 It is a structural schematic diagram of a Y-type intake manifold structural connection mechanism of the present invention; Figure 7 It is a schematic diagram of the disassembled structure of a Y-type intake manifold structure connecting mechanism of the present invention; Figure 8 It is a cross-sectional structural schematic diagram of a Y-shaped intake manifold structural communication mechanism of the present invention; Fig. 9 It is a structural schematic diagram of the second connecting sleeve of a Y-type intake manifold structure of the present invention.

[0020] In the figure: 1. manifold body; 11. connecting pipe; 12. airway 1; 13. airway 2; 14. airway 3; 15. airway 4; 16. first common airway; 17. second common airway; 18. threaded pipe; 2. support frame; 3. support mechanism; 31. handle; 32. first movable plate; 321. limit groove; 322. rotating rod; 33. first special-shaped gear; 34. second special-shaped gear; 35. second movable plate; 351. limit block; 36. driving rod; 37. transmission rod; 371. first center rod; 38. swing rod; 381 , second center rod; 382, ​​first linkage rod; 383, second linkage rod; 4, connecting mechanism; 41, first connecting sleeve; 411, first internal thread; 412, first groove; 42, movable sleeve; 421, convex ring; 43, second connecting sleeve; 431, through hole; 432, first sealing ring; 433, first sealing groove; 434, sliding groove; 435, second internal thread; 44, connecting pipe; 441, second sealing groove; 442, second sealing ring; 45, limiting ball; 46, limiting sleeve; 47, first spring; 48, second spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1: Reference Figure 1 - Figure 5 As shown: a Y-shaped intake manifold structure, including a manifold body 1 and a support frame 2, the manifold body 1 includes a connecting pipe 11, both ends of the connecting pipe 11 are fixedly connected with a second common air passage 17 and a first common air passage 16, two supporting mechanisms 3 are symmetrically installed on the inner side of the top of the support frame 2, one end of the connecting pipe 11 is provided with a connecting mechanism 4, one end of the first common air passage 16 is respectively fixedly connected with an air passage 1 12 and an air passage 2 13, and one end of the second common air passage 17 is respectively fixedly connected with an air passage 3 14 and an air passage 4 15; The supporting mechanism 3 includes two first movable plates 32, the bottom ends of the two first movable plates 32 are fixedly connected with rotating rods 322, the outer surface of one rotating rod 322 is fixedly connected with the second special-shaped gear 34, the outer surface of the other rotating rod 322 is fixedly connected with the first special-shaped gear 33, the first special-shaped gear 33 is meshed with the second special-shaped gear 34, the outer wall of the first movable plate 32 is provided with a limiting groove 321, the inner side of the limiting groove 321 is slidably connected with a limiting block 351, the outer surface of the limiting block 351 is fixedly connected with the second movable plate 35, and the top side wall of the second movable plate 35 A driving rod 36 is rotatably connected, and a transmission rod 37 is rotatably connected to the bottom end of the driving rod 36. The bottom end of the transmission rod 37 is rotatably connected to the inner wall of the support frame 2. A first center rod 371 is fixedly connected to one side of the middle of the transmission rod 37. A second linkage rod 383 is rotatably connected to the outer surface of one end of the first center rod 371. The top end of the second linkage rod 383 is rotatably connected to a swing rod 38. The middle part of the swing rod 38 is rotatably connected to the first linkage rod 382. The top end of the first linkage rod 382 is rotatably connected to the side wall of the first movable plate 32. A second center rod 381 is fixedly connected to one side of the bottom end of the swing rod 38.

[0023] In the present embodiment, in the design of the airway system, the parts of airway one 12 and airway two 13 before the intersection are independent airways, and they are arranged symmetrically along the central axis of the airway. The airways after the intersection form a common airway to ensure the coordination of gas flow. The centerline length of the common airway needs to be more than 80 mm to ensure uniform flow. In the airway system, airway one 12, airway two 13 and the first common airway 16 form the left airway group, while airway three 14, airway four 15 and the second common airway 17 form the right airway group. The left airway group and the right airway group are based on the central axis of the intake manifold and present a completely symmetrical structure. This design ensures that the four airways have consistent speed and flow loss during the flow process, optimizes the airflow path, and reduces the performance loss caused by uneven flow.

[0024] When positioning the first common air duct 16 and the second common air duct 17, the cooperation of the two first movable plates 32 plays a key supporting role. First, the rotation of the first special-shaped gear 33 will exert a force on the second special-shaped gear 34, so that the two rotate together and in opposite directions. This action is transmitted to the two first movable plates 32 through the two rotating rods 322, so that the two first movable plates 32 also rotate. Since the two first movable plates 32 rotate in opposite directions, they can effectively close together, thereby providing stable support for the first common air duct 16 and the second common air duct 17. This support mechanism not only ensures the correct positioning of the common air duct, but also optimizes the flow path of the airflow, further improving the overall efficiency of the intake system. It is achieved that the manifold body 1 can be temporarily fixed in an appropriate position first, so that the position can be adjusted and the bolts can be installed more conveniently. In addition, it can also help maintain the stability of the manifold body 1, prevent movement or tilting during installation, and ensure that the gasket is correctly aligned with the contact surface.

[0025] Embodiment 2: Figure 3 and Figure 4 As shown, one end of the second center rod 381 is rotatably connected to the inner wall of the support frame 2, and one end of the two rotating rods 322 are rotatably connected to the inner wall of the support frame 2. One end of one of the rotating rods 322 passes through the support frame 2, and a handle 31 is provided on the side wall of the support frame 2, and the handle 31 is fixedly connected to one of the rotating rods 322.

[0026] In this embodiment, when the two first movable plates 32 rotate at the same time, they will drive the first linkage rod 382. The first linkage rod 382 is connected to the swing rod 38, causing the swing rod 38 to move synchronously. This linkage mechanism ensures the consistency of movement between the two movable plates, thereby maintaining the coordination of the system. The swing rod 38 rotates around the second center rod 381. Since the swing rod 38 is connected to the transmission rod 37, the rotation of the swing rod 38 will be transmitted to the transmission rod 37, causing it to move accordingly. The bottom end of the transmission rod 37 is fixedly connected to the inner wall of the support frame 2, so that the transmission rod 37 can provide stable support through the support frame 2 when it moves. When the transmission rod 37 moves, it will apply a force to the drive rod 36. The other end of the drive rod 36 is connected to the limit block 351, so the drive rod 36 will apply a force to the second movable plate 35 through this connection to start moving.

[0027] The stopper 351 slides along the stopper groove 321 of the first movable plate 32. This design enables the second movable plate 35 to accurately stop the top of the first common air channel 16 and the second common air channel 17, preventing the system from being greatly skewed or misaligned. The stopper 351 is adjusted within the sliding track of the stopper groove 321, further stabilizing the structure of the manifold body 1.

[0028] Through the coordinated work of the above components, the system can effectively avoid large overall skew. The tops of the first common air duct 16 and the second common air duct 17 are precisely limited, so that the overall structure remains stable during operation and reduces deviations caused by vibration or operating errors. The sliding mechanism of the second movable plate 35 and the first movable plate 32 allows fine adjustments to adapt to different working conditions and requirements. This mechanism ensures high-precision operation under various working conditions and improves the flexibility and adaptability of the system.

[0029] Through these precise linkage and limit designs, the entire system can achieve a high degree of stability and precision, which not only ensures the connection and support effects, but also improves the reliability and safety of operation.

[0030] Embodiment 3: According to Figure 6 - Fig. 9 As shown, the connecting mechanism 4 includes a first connecting sleeve 41 and a second connecting sleeve 43. A connecting pipe 44 is installed inside the second connecting sleeve 43 and the first connecting sleeve 41. A first internal thread 411 is provided inside one end of the first connecting sleeve 41. A threaded pipe 18 is threadedly connected inside the first internal thread 411. One end of the threaded pipe 18 is fixedly connected to the connecting pipe 11, and the threaded pipe 18 is connected to one of the connecting pipes 44. The two connecting pipes 44 are connected, and a second sealing groove 441 is provided on the outer surface of one end of the connecting pipe 44. A second sealing ring 442 is installed inside the second sealing groove 441. A limiting sleeve 46 is fixedly connected to the middle of the inner cavity of the second connecting sleeve 43 and the first connecting sleeve 41. The limiting sleeve 46 is sleeved on the outer surface of the connecting pipe 44. A first spring 47 is installed between the connecting pipe 44 and the limiting sleeve 46. The first spring 47 is sleeved on the outer surface of the connecting pipe 44. The outer surface of the second connecting sleeve 43 is sleeved with the movable sleeve 42, and a sliding groove 434 is provided on the outer surface of one end of the second connecting sleeve 43, and a second spring 48 is installed inside the sliding groove 434, and a convex ring 421 is fixedly connected inside the movable sleeve 42. A through hole 431 is provided on the outer surface of the second connecting sleeve 43, and a first sealing groove 433 is provided inside one end of the second connecting sleeve 43, and a first groove 412 is provided on the outer surface of the middle part of the first connecting sleeve 41. A first sealing ring 432 is installed inside the first sealing groove 433, and a limiting ball 45 is installed inside the through hole 431, and the limiting ball 45 matches the first groove 412, and a second internal thread 435 is provided inside one end of the second connecting sleeve 43.

[0031] In this embodiment, first, the first internal thread 411 at one end of the first connecting sleeve 41 is threadedly connected to the threaded tube 18. This step ensures that the first connecting sleeve 41 is firmly connected to the threaded tube 18, providing a stable foundation for subsequent connection. Next, one end of the first connecting sleeve 41 is inserted into the second connecting sleeve 43. During the insertion process, the second connecting sleeve 43 must be moved so that the convex ring 421 slides inside the sliding groove 434. At this time, the convex ring 421 will compress the second spring 48, and the compression of the spring provides the necessary pressure to keep the connection stable.

[0032] During the insertion process, the insertion action of the first connecting sleeve 41 will squeeze the limiting ball 45, causing the limiting ball 45 to move inside the through hole 431. This operation helps to ensure that the position of the limiting ball 45 is adjusted to a suitable state during the connection process. When the connecting pipe 44 of the first connecting sleeve 41 and the second connecting sleeve 43 begins to communicate, the first spring 47 will use its elastic effect to make the connection tighter to prevent leakage. This step ensures the sealing and airtightness of the system.

[0033] During the connection process, loosening the movable sleeve 42 will cause the second spring 48 to start moving under the elastic action. This will cause the limiting ball 45 to further move inside the through hole 431 under the action of the convex ring 421, ensuring the stability of the connection. Once the first connecting sleeve 41 is fully inserted into the second connecting sleeve 43, the first groove 412 will be aligned with the through hole 431. This alignment allows the limiting ball 45 to be firmly stuck in the first groove 412 and the through hole 431, thereby completing the fixation of the second connecting sleeve 43 and the first connecting sleeve 41.

[0034] These steps not only improve the convenience of connection, but also ensure the tightness of the connected parts, prevent possible leakage, ensure the performance and stability of the overall system, and ensure the firmness and reliability of the connection through multiple steps such as threaded connection, spring compression, and stop ball 45 positioning. This multiple locking mechanism effectively reduces loosening caused by vibration or other external factors.

[0035] The use method and working principle of the device: When positioning the first common airway 16 and the second common airway 17, the cooperation of the two first movable plates 32 plays a supporting role. During the supporting process, the rotation of the first special-shaped gear 33 will exert a force on the second special-shaped gear 34, so that the two rotate together and in opposite directions. At this time, the two rotating rods 322 will rotate under the action of the first special-shaped gear 33 and the second special-shaped gear 34, respectively, and then drive the two first movable plates 32 to rotate. The two first movable plates 32 rotate in opposite directions and close together, thereby supporting the first common airway 16 and the second common airway 17.

[0036] When the two first movable plates 32 rotate at the same time, the first linkage rod 382 will drive the swing rod 38 to move, so that the movement of the first movable plate 32 is synchronously transmitted to the swing rod 38. When the swing rod 38 moves, the second linkage rod 383 applies a force to the transmission rod 37, so that the transmission rod 37 moves with the swing rod 38. The swing rod 38 rotates around the second center rod 381, so that the transmission rod 37 rotates around its bottom end, and the bottom end is connected to the inner wall of the support frame 2. When the transmission rod 37 moves, it will apply a force to the drive rod 36, so that the drive rod 36 applies a force to the second movable plate 35 through the top to promote its movement. The movement of the second movable plate 35 causes the limit block 351 to slide along the limit groove 321 on the outer surface of the first movable plate 32, thereby limiting the top of the first common air channel 16 and the second common air channel 17, further stabilizing the system and preventing the manifold body 1 from being skewed as a whole.

[0037] When connecting with the engine intake valve, first use the first internal thread 411 at one end of the first connecting sleeve 41 to threadably connect with the threaded tube 18. Then, insert the first connecting sleeve 41 into the second connecting sleeve 43. In this process, the second connecting sleeve 43 is moved so that the convex ring 421 slides inside the sliding groove 434 and squeezes the second spring 48 to start compressing. When the first connecting sleeve 41 is inserted into the second connecting sleeve 43, the limiting ball 45 is squeezed so that the limiting ball 45 moves inside the through hole 431. When the connecting pipe 44 inside the first connecting sleeve 41 begins to communicate with the connecting pipe 44 inside the second connecting sleeve 43, the elastic action of the first spring 47 will ensure a tighter connection to avoid leakage. At the same time, after loosening the movable sleeve 42, the elastic action of the second spring 48 will move the convex ring 421, so that the limiting ball 45 moves inside the through hole 431. When the first connecting sleeve 41 is connected to the second connecting sleeve 43, the first groove 412 is aligned with the through hole 431, so that the limiting ball 45 can be respectively stuck in the first groove 412 and the through hole 431, thereby completing the fixation of the second connecting sleeve 43 and the first connecting sleeve 41.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A Y-shaped intake manifold structure, comprising a manifold body (1) and a support frame (2), wherein the manifold body (1) comprises a connecting pipe (11), and both ends of the connecting pipe (11) are fixedly connected to a second common air passage (17) and a first common air passage (16), characterized in that: Two supporting mechanisms (3) are symmetrically mounted on the inner side of the top of the supporting frame (2); a connecting mechanism (4) is arranged at one end of the connecting pipe (11); one end of the first common air channel (16) is respectively fixedly connected to air channel one (12) and air channel two (13); and one end of the second common air channel (17) is respectively fixedly connected to air channel three (14) and air channel four (15); The support mechanism (3) comprises two first movable plates (32), the bottom ends of the two first movable plates (32) are fixedly connected to rotating rods (322), the outer surface of one of the rotating rods (322) is fixedly connected to a second special-shaped gear (34), the outer surface of the other rotating rod (322) is fixedly connected to a first special-shaped gear (33), the first special-shaped gear (33) is meshingly connected with the second special-shaped gear (34), the outer wall of the first movable plate (32) is provided with a limiting groove (321), the inner side of the limiting groove (321) is slidably connected to a limiting block (351), the outer surface of the limiting block (351) is fixedly connected to a second movable plate (35), and the top side of the second movable plate (35) is fixedly connected to the second movable plate (35). The wall is rotatably connected to a driving rod (36), the bottom end of the driving rod (36) is rotatably connected to a transmission rod (37), the bottom end of the transmission rod (37) is rotatably connected to the inner wall of the support frame (2), one side of the middle of the transmission rod (37) is fixedly connected to a first center rod (371), the outer surface of one end of the first center rod (371) is rotatably connected to a second linkage rod (383), the top end of the second linkage rod (383) is rotatably connected to a swing rod (38), the middle part of the swing rod (38) is rotatably connected to a first linkage rod (382), the top end of the first linkage rod (382) is rotatably connected to the side wall of the first movable plate (32), and one side of the bottom end of the swing rod (38) is fixedly connected to the second center rod (381).

2. A Y-shaped intake manifold structure according to claim 1, characterized in that: One end of the second center rod (381) is rotatably connected to the inner wall of the support frame (2), and one end of the two rotating rods (322) are both rotatably connected to the inner wall of the support frame (2).

3. A Y-shaped intake manifold structure according to claim 2, characterized in that: One end of one of the rotating rods (322) passes through the support frame (2); a handle (31) is provided on a side wall of the support frame (2); and the handle (31) is fixedly connected to one of the rotating rods (322).

4. A Y-shaped intake manifold structure according to claim 1, characterized in that: The connecting mechanism (4) comprises a first connecting sleeve (41) and a second connecting sleeve (43); connecting pipes (44) are installed inside the second connecting sleeve (43) and the first connecting sleeve (41); a first internal thread (411) is provided inside one end of the first connecting sleeve (41); a threaded pipe (18) is threadedly connected inside the first internal thread (411); one end of the threaded pipe (18) is fixedly connected to the connecting pipe (11); and the threaded pipe (18) is connected to one of the connecting pipes (44).

5. A Y-shaped intake manifold structure according to claim 4, characterized in that: The two connecting pipes (44) are connected, and a second sealing groove (441) is provided on the outer surface of one end of the connecting pipe (44), and a second sealing ring (442) is installed inside the second sealing groove (441).

6. A Y-shaped intake manifold structure according to claim 5, characterized in that: The middle parts of the inner cavities of the second connecting sleeve (43) and the first connecting sleeve (41) are fixedly connected to a limiting sleeve (46), and the limiting sleeve (46) is sleeved on the outer surface of the connecting pipe (44).

7. A Y-shaped intake manifold structure according to claim 6, characterized in that: A first spring (47) is installed between the connecting pipe (44) and the limiting sleeve (46), and the first spring (47) is sleeved on the outer surface of the connecting pipe (44).

8. A Y-shaped intake manifold structure according to claim 7, characterized in that: The outer surface of the second connecting sleeve (43) is sleeved with a movable sleeve (42), the outer surface of one end of the second connecting sleeve (43) is provided with a sliding groove (434), a second spring (48) is installed inside the sliding groove (434), and a convex ring (421) is fixedly connected to the inner side of the movable sleeve (42).

9. A Y-shaped intake manifold structure according to claim 8, characterized in that: A through hole (431) is provided on the outer surface of the second connecting sleeve (43), a first sealing groove (433) is provided on the inner side of one end of the second connecting sleeve (43), and a first groove (412) is provided on the outer surface of the middle portion of the first connecting sleeve (41).

10. A Y-shaped intake manifold structure according to claim 9, characterized in that: A first sealing ring (432) is installed inside the first sealing groove (433), a limiting ball (45) is installed inside the through hole (431), the limiting ball (45) matches the first groove (412), and a second internal thread (435) is provided inside one end of the second connecting sleeve (43).

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