A connecting structure of an intake pipe for a cylinder head

Abstract

The present application provides a connection structure for an intake pipe of a cylinder head, belonging to the technical field of cylinder heads. The connection structure for the intake pipe of the cylinder head includes a cylinder head body, an intake pipe, and a fixing assembly. In the above implementation process, the intake pipe is inserted into the limiting groove, and then the threaded sleeve is rotated. When the threaded sleeve moves downward, it will drive the second annular limiting plate to move downward. Furthermore, the second annular limiting plate can squeeze the first annular limiting plate, thereby fixing the first annular limiting plate and further fixing the intake pipe. The second annular limiting plate is uniformly stressed and moves downward as a whole. When the second annular limiting plate squeezes the first annular limiting plate, the first annular limiting plate is uniformly stressed, so that the intake pipe is uniformly stressed. When affected by external stress, the intake pipe is not easily loosened, and the sealing quality between the intake pipe and the cylinder head body can be improved.

Description

Technical Field

[0001] This application relates to the technical field of cylinder heads, and more particularly, to a connection structure for an intake pipe of a cylinder head. Background Art

[0002] The cylinder head is cast from cast iron or aluminum alloy. It is the installation base of the valve mechanism and also the sealing cover of the cylinder. In traditional technology, both the cylinder head and the intake pipe are independent mechanisms. The intake pipe is fixed to the cylinder head by multiple bolts. In actual installation, it is very difficult to make the tightening degree of multiple bolts the same. The intake pipe is unevenly stressed. When affected by external stresses (such as vibration), the intake pipe is prone to looseness, resulting in a decrease in the sealing quality between the cylinder head and the intake pipe. Summary of the Invention

[0003] To make up for the above deficiencies, this application provides a connection structure for an intake pipe of a cylinder head, aiming to improve the problem that the intake pipe on the cylinder head is prone to looseness, resulting in a decrease in the sealing quality between the cylinder head and the intake pipe.

[0004] The embodiment of this application provides a connection structure for an intake pipe of a cylinder head, including a cylinder head body, an intake pipe, and a fixing component.

[0005] The cylinder head body is provided with an air inlet, the upper surface of the cylinder head body is provided with a connecting cylinder, the connecting cylinder is communicated with the air inlet, and a limiting groove is provided on the cylinder wall of the connecting cylinder.

[0006] The bottom end of the intake pipe is slidably inserted into the limiting groove.

[0007] The fixing component includes a first annular limiting plate, a second annular limiting plate, and a threaded sleeve. The first annular limiting plate is fixedly sleeved on the pipe body of the intake pipe. The threaded sleeve is threadedly sleeved on the outer wall of the connecting cylinder. The threaded sleeve is sleeved on the plate body of the first annular limiting plate. The second annular limiting plate is fixedly connected to the top end of the threaded sleeve, and the second annular limiting plate is located above the first annular limiting plate.

[0008] In the above implementation process, when installing and fixing the intake pipe, insert the intake pipe into the limit groove, and then rotate the threaded sleeve. As the threaded sleeve moves downward, it will gradually sleeve on the connecting cylinder. The downward movement of the threaded sleeve will drive the second annular limiting plate to move downward, and then the second annular limiting plate can squeeze the first annular limiting plate, thereby fixing the first annular limiting plate and further fixing the intake pipe. The second annular limiting plate is uniformly stressed and moves downward as a whole. When the second annular limiting plate squeezes the first annular limiting plate, the first annular limiting plate is uniformly stressed, so that the intake pipe is uniformly stressed. When affected by external stress, the intake pipe is not easily loosened, and the sealing quality between the intake pipe and the cylinder head body can be improved.

[0009] In a specific implementation, the bottom wall of the limit groove is provided with a first limiting rod. There are two first limiting rods, and the two first limiting rods are symmetrically arranged. The rod bodies of the two first limiting rods are both slidably inserted into the inner wall of the intake pipe wall.

[0010] In a specific implementation, the pipe wall of the intake pipe is provided with slots. There are two slots, and the two first limiting rods are respectively slidably inserted into the two slots.

[0011] In a specific implementation, a sealing gasket is provided on the bottom wall of the intake pipe, and the sealing gasket is correspondingly arranged with the bottom wall of the limit groove.

[0012] In a specific implementation, the rod bodies of the two first limiting rods both slidably penetrate through the gasket body of the sealing gasket.

[0013] In a specific implementation, the outer wall of the threaded sleeve is provided with connecting blocks. There are several connecting blocks, and the several connecting blocks are evenly distributed. The blocks of the several connecting blocks are all provided with jacks.

[0014] In a specific implementation, the connecting structure of the intake pipe for the cylinder head further includes a limiting component. The limiting component includes a second limiting rod, a threaded rod, and a third annular limiting plate. The rod body of the second limiting rod slidably penetrates through the barrel wall of the threaded sleeve. The threaded rod is connected to the bottom end of the second limiting rod. The third annular limiting plate is fixedly sleeved on the outer wall of the connecting cylinder. The plate body of the third annular limiting plate is provided with a threaded hole, and the threaded rod is correspondingly arranged with the threaded hole.

[0015] In a specific implementation, the diameter of the threaded rod is smaller than the diameter of the second limiting rod, and the center of the threaded rod and the center of the second limiting rod are on the same vertical line.

[0016] In a specific embodiment, the bottom surface of the third annular limiting plate is fixedly connected to the upper surface of the cylinder head body.

[0017] In a specific embodiment, a plurality of threaded holes are provided, and the plurality of threaded holes are evenly distributed in a circumferential manner, and the plurality of threaded holes are correspondingly arranged with the threaded rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0019] Figure 1 is a schematic front view structure diagram of the connecting structure of the intake pipe for the cylinder head provided by the embodiment of the present application;

[0020] Figure 2 is a partial structure schematic diagram of the connecting cylinder and the threaded sleeve provided by the embodiment of the present application;

[0021] Figure 3 is a schematic front view sectional structure diagram of the connecting structure of the intake pipe for the cylinder head provided by the embodiment of the present application;

[0022] Figure 4 is a partial sectional structure schematic diagram of the cylinder head body and the intake pipe provided by the embodiment of the present application;

[0023] Figure 5 is a schematic sectional structure diagram of the fixing component provided by the embodiment of the present application.

[0024] In the figure: 100 - cylinder head body; 110 - air inlet; 120 - connecting cylinder; 121 - limiting groove; 122 - first limiting rod; 200 - intake pipe; 210 - slot; 220 - sealing gasket; 300 - fixing component; 310 - first annular limiting plate; 320 - second annular limiting plate; 330 - threaded sleeve; 331 - connecting block; 332 - jack; 400 - limiting component; 410 - second limiting rod; 420 - threaded rod; 430 - third annular limiting plate; 431 - threaded hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the scope of protection of this application.

[0027] Please refer to Figure 1 , this application provides a connection structure for an intake pipe of a cylinder head, including a cylinder head body 100, an intake pipe 200, and a fixing assembly 300.

[0028] Please refer to Figures 1-5 , the cylinder head body 100 is provided with an air inlet 110, and a connection cylinder 120 is provided on the upper surface of the cylinder head body 100. The connection cylinder 120 communicates with the air inlet 110, and a limiting groove 121 is provided on the cylinder wall of the connection cylinder 120.

[0029] Please refer to Figures 1-5 , the bottom end of the intake pipe 200 is slidably inserted into the limiting groove 121. A first limiting rod 122 is provided on the bottom wall of the limiting groove 121. There are two first limiting rods 122, and the two first limiting rods 122 are symmetrically arranged. The rod bodies of the two first limiting rods 122 are slidably inserted into the pipe wall of the intake pipe 200. Two slots 210 are provided on the pipe wall of the intake pipe 200. The two first limiting rods 122 are respectively slidably inserted into the two slots 210. The two first limiting rods 122 are used to limit the intake pipe 200, which can improve the stability of the intake pipe 200. A sealing gasket 220 is provided on the bottom wall of the intake pipe 200. The sealing gasket 220 corresponds to the bottom wall of the limiting groove 121. The rod bodies of the two first limiting rods 122 slidably penetrate through the gasket body of the sealing gasket 220.

[0030] Please refer to Figures 1-5, the fixing component 300 includes a first annular limiting plate 310, a second annular limiting plate 320 and a threaded sleeve 330. The first annular limiting plate 310 is fixedly sleeved on the pipe body of the air inlet pipe 200. The threaded sleeve 330 is threadedly sleeved on the outer wall of the connecting cylinder 120. The threaded sleeve 330 is sleeved on the plate body of the first annular limiting plate 310. A connecting block 331 is arranged on the outer wall of the threaded sleeve 330. There are several connecting blocks 331, and several connecting blocks 331 are evenly distributed. A jack 332 is opened on the block body of each of the several connecting blocks 331. The connecting block 331 and the jack 332 are used to facilitate the worker to rotate the threaded sleeve 330. One end of a crowbar can be inserted into the jack 332, and the threaded sleeve 330 can be rotated by prying with the crowbar. The second annular limiting plate 320 is fixedly connected to the top end of the threaded sleeve 330, and the second annular limiting plate 320 is located above the first annular limiting plate 310.

[0031] Please refer to Figure 1 , 2 , 3 and 5. The connecting structure of the air inlet pipe for the cylinder head further includes a limiting component 400. The limiting component 400 includes a second limiting rod 410, a threaded rod 420 and a third annular limiting plate 430. The rod body of the second limiting rod 410 slidably penetrates through the barrel wall of the threaded sleeve 330. The threaded rod 420 is connected to the bottom end of the second limiting rod 410. The diameter of the threaded rod 420 is smaller than the diameter of the second limiting rod 410. The center of the threaded rod 420 and the center of the second limiting rod 410 are on the same vertical straight line.

[0032] In this embodiment, the third annular limiting plate 430 is fixedly sleeved on the outer wall of the connecting cylinder 120. The bottom surface of the third annular limiting plate 430 is fixedly connected to the upper surface of the cylinder head body 100. A threaded hole 431 is opened on the plate body of the third annular limiting plate 430. The threaded rod 420 is arranged corresponding to the threaded hole 431. There are several threaded holes 431, and several threaded holes 431 are evenly distributed in a circle. Several threaded holes 431 are all arranged corresponding to the threaded rod 420. By sliding the second limiting rod 410 downward and threadedly inserting the threaded rod 420 into the threaded hole 431, the second limiting rod 410 can be limited, and then the threaded sleeve 330 can be limited, and the rotation of the threaded sleeve 330 can be prevented.

[0033] Working principle of the connection structure of the intake pipe for the cylinder head: When installing and fixing the intake pipe 200, insert the intake pipe 200 into the inside of the limit groove 121, so that the two first limit rods 122 are respectively inserted into the two slots 210. Then rotate the threaded sleeve 330, so that the threaded sleeve 330 moves downward, and the threaded sleeve 330 will gradually sleeve on the connection cylinder 120. When the threaded sleeve 330 moves downward, it will drive the second annular limit plate 320 to move downward, and then the second annular limit plate 320 can squeeze the first annular limit plate 310, and then the first annular limit plate 310 can be fixed, and then the intake pipe 200 can be fixed. Then slide the second limit rod 410 downward, and then rotate the second limit rod 410, so that the threaded rod 420 is threadedly inserted into the threaded hole 431, and then the second limit rod 410 is limited, and then the threaded sleeve 330 is limited, and then the reverse rotation of the threaded sleeve 330 is prevented. The second annular limit plate 320 is uniformly stressed and moves downward as a whole. When the second annular limit plate 320 squeezes the first annular limit plate 310, the first annular limit plate 310 is uniformly stressed, and then the intake pipe 200 is uniformly stressed. When affected by external stress, the intake pipe 200 is not easily loosened, and the sealing quality between the intake pipe 200 and the cylinder head body 100 can be improved.

[0034] The above are only the embodiments of the present application and are not used to limit the protection scope of the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0035] As described above, the above are only the specific implementation manners of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, and all of them should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A connecting structure for an intake pipe of a cylinder head, characterized in that, including a cylinder head body (100), an air inlet (110) is formed in the cylinder head body (100), a connecting cylinder (120) is formed on the upper surface of the cylinder head body (100), the connecting cylinder (120) is communicated with the air inlet (110), and a limiting groove (121) is formed in the cylinder wall of the connecting cylinder (120); an intake pipe (200), the bottom end of the intake pipe (200) is slidably inserted into the limiting groove (121); a fixing assembly (300), the fixing assembly (300) includes a first annular limiting plate (310), a second annular limiting plate (320) and a threaded sleeve (330), the first annular limiting plate (310) is fixedly sleeved on the pipe body of the intake pipe (200), the threaded sleeve (330) is threadedly sleeved on the outer wall of the connecting cylinder (120), the threaded sleeve (330) is sleeved on the plate body of the first annular limiting plate (310), the second annular limiting plate (320) is fixedly connected to the top end of the threaded sleeve (330), and the second annular limiting plate (320) is located above the first annular limiting plate (310); wherein, a first limiting rod (122) is arranged on the bottom wall of the limiting groove (121), there are two first limiting rods (122), the two first limiting rods (122) are symmetrically arranged, and the rod bodies of the two first limiting rods (122) are slidably inserted into the inner part of the pipe wall of the intake pipe (200); a connecting block (331) is arranged on the outer wall of the threaded sleeve (330), there are several connecting blocks (331), the several connecting blocks (331) are evenly distributed, and jacks (332) are formed in the blocks of the several connecting blocks (331).

2. The connecting structure of the intake pipe for a cylinder head according to claim 1, characterized in that, a slot (210) is formed in the pipe wall of the intake pipe (200), there are two slots (210), and the two first limiting rods (122) are respectively slidably inserted into the two slots (210).

3. The connecting structure of the intake pipe for a cylinder head according to claim 2, characterized in that, a sealing gasket (220) is arranged on the bottom wall of the intake pipe (200), and the sealing gasket (220) is correspondingly arranged with the bottom wall of the limiting groove (121).

4. The connecting structure of the intake pipe for a cylinder head according to claim 3, characterized in that, the rod bodies of the two first limiting rods (122) both slidably penetrate through the gasket body of the sealing gasket (220).

5. The connecting structure of the intake pipe for a cylinder head according to claim 1, characterized in that, also included is a limiting assembly (400), the limiting assembly (400) includes a second limiting rod (410), a threaded rod (420) and a third annular limiting plate (430), the rod body of the second limiting rod (410) slidably penetrates through the cylinder wall of the threaded sleeve (330), the threaded rod (420) is connected to the bottom end of the second limiting rod (410), the third annular limiting plate (430) is fixedly sleeved on the outer wall of the connecting cylinder (120), a threaded hole (431) is formed in the plate body of the third annular limiting plate (430), and the threaded rod (420) is correspondingly arranged with the threaded hole (431).

6. The connecting structure of the intake pipe for a cylinder head according to claim 5, characterized in that, The diameter of the threaded rod (420) is smaller than the diameter of the second limiting rod (410), and the center of the threaded rod (420) and the center of the second limiting rod (410) are on the same vertical line.

7. The connecting structure of the intake pipe for a cylinder head according to claim 5, characterized in that, The bottom surface of the third annular limiting plate (430) is fixedly connected to the upper surface of the cylinder head body (100).

8. The connecting structure of the intake pipe for a cylinder head according to claim 5, characterized in that, A plurality of threaded holes (431) are provided, the plurality of threaded holes (431) are evenly distributed in a circumferential manner, and the plurality of threaded holes (431) are respectively arranged corresponding to the threaded rod (420).

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