Integrated cylinder head with rocker arm mounted in penetrating manner

Abstract

The integrated cylinder head comprises a cylinder head main body and is characterized in that a side wall is formed on the upper end face of the cylinder head main body, a boss and a concave cavity are formed in the side wall, four rocker arm seats are formed at the junction of the boss and the concave cavity, the rocker arm seats are arranged on the same straight line, and the rocker arm seats are arranged on the cylinder head main body. The rocker arm seats are provided with pin shaft installation holes, the pin shaft installation holes are higher than the side walls and used for installing pin shafts of rocker arms, the rocker arm seats on the two outer sides are provided with positioning holes, and the positioning holes are located in the outer surfaces of the rocker arm seats. Fasteners are inserted into the positioning holes to limit the two ends of the rocker arm mounting shaft, axial movement of the rocker arm mounting shaft is prevented, and noise caused by collision between the rocker arm mounting shaft and external parts is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinder heads, in particular to an integrated cylinder head with a rocker arm installed in an interlaced manner. Background Art

[0002] The rocker arm on the cylinder head is generally installed by connecting the cylinder head and the cylinder head cover to the rocker arm and the rocker arm mounting shaft. This installation method is not convenient on the one hand, and the connection strength is not high on the other hand.

[0003] Therefore, in order to facilitate the installation of the rocker arm, Patent 201620383969.6 provides a cylinder head for a general purpose machine. In this technical solution, four support ears are formed on the top surface of the support seat, which makes it convenient to insert the rocker arm mounting shaft into the support ears. When the rocker arm rotates, the rocker arm mounting shaft will also rotate, which will further cause the rocker arm mounting shaft to move axially, causing the rocker arm to collide with the outer components to produce noise. Utility Model Content

[0004] The purpose of the utility model is to provide an integrated cylinder head with an interlaced rocker arm, a positioning hole is opened on the rocker arm seat, and fasteners are inserted into the positioning hole to limit the two ends of the rocker arm mounting shaft to prevent axial movement of the rocker arm mounting shaft, and further avoid collision between the rocker arm mounting shaft and external components to generate noise.

[0005] The utility model provides the following technical solution: an integrated cylinder head for inserting rocker arms, comprising a cylinder head body, a side wall formed on the upper end surface of the cylinder head body, a boss and a cavity formed in the side wall, four rocker arm seats formed at the junction of the boss and the cavity, the rocker arm seats are on the same straight line, pin shaft mounting holes are formed on the rocker arm seats, the pin shaft mounting holes are higher than the side walls and are used to mount the pin shafts of the rocker arms, positioning holes are formed on the two outer rocker arm seats, and the positioning holes are located on the outer surfaces of the rocker arm seats.

[0006] In order to reduce the wear inside the rocker arm seat, lubricating oil holes are opened on the rocker arm seats on both outer sides, and the lubricating oil holes are located on one side of the positioning hole.

[0007] In order to enhance the rigidity and strength of the rocker arm seat, the thickness of the two outer rocker arm seats is greater than that of the two inner rocker arm seats, the two outer rocker arm seats are respectively connected to the side walls, and connecting ribs are formed between the two inner rocker arm seats, and a connecting platform is formed between the side wall and the side of the boss, and the connecting platform is formed in the middle of the concave cavity, and a connecting seat is also formed on the surface of the connecting platform, and the connecting seat is U-shaped and formed between the two inner rocker arm seats.

[0008] In order to align the piston rod with the rocker arm position, two piston rod installation cavities are opened in the concave cavity, and the piston rod installation cavities are respectively opened on the left and right sides of the connecting platform. The position of the piston rod installation cavity is in the same straight line as the center line between the outer rocker arm seat and the inner rocker arm seat.

[0009] In order to improve the structure of the combustion chamber, an air inlet and an air outlet are respectively formed on both side surfaces of the cylinder head body, a base is formed on the lower end surface of the cylinder head body, a bathtub-shaped combustion chamber is formed in the base, and an upwardly concave air inlet and air outlet are formed on the top surface of the combustion chamber, and the air inlet and air outlet are respectively connected to the air inlet and air outlet.

[0010] In order to relieve the pressure of the combustion chamber, two valve installation cavities are also provided on the boss, and the valve installation cavities are respectively formed on the top surfaces of the inlet passage and the outlet passage.

[0011] In order to facilitate the installation of the spark plug, a spark plug hole is also provided in the combustion chamber, and the spark plug hole extends upward to the outside of the side wall.

[0012] In order to enhance the connection strength between the cylinder head cover and the cylinder head, four outer cover connecting holes are also opened on the cylinder head body, two of which are opened on the outside of the side wall, and the other two are opened on both sides of the piston rod mounting cavity and are located inside the side wall.

[0013] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0014] (1) A positioning hole is opened on the outer rocker arm seat, and fasteners are inserted into the positioning hole to limit the two ends of the rocker arm mounting shaft to prevent axial movement of the rocker arm mounting shaft, thereby further preventing the rocker arm mounting shaft from colliding with external components and generating noise;

[0015] (2) The rocker arm seat is connected to the concave cavity and the boss at the same time, which enhances the rigidity and strength of the rocker arm seat, integrates the rocker arm seat with the cylinder head body, and transmits the force of the rocker arm mounting shaft to the concave cavity and the boss through the rocker arm seat. The setting of the rocker arm seat avoids the axial movement of the rocker arm mounting shaft and avoids the noise caused by the collision between the rocker arm and the supporting component.

[0016] (3) Open a lubricating oil hole and inject lubricating oil into the rocker arm seat from the lubricating oil hole to lubricate the rocker arm mounting shaft and the rocker arm, thereby reducing the wear between the rocker arm mounting shaft and the rocker arm seat;

[0017] (4) An air inlet duct and an air outlet duct are formed on the top surface of the combustion chamber, and the air inlet duct and the air outlet duct are connected to the air inlet port and the air outlet port respectively, thereby improving the shape and area of ​​the combustion chamber so that the surface area ratio is between 2.6 and 2.8, meeting the emission standards of the third stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0020] Figure 2 The utility model Figure 1 A partial enlarged schematic diagram of the middle A area;

[0021] Figure 3 It is a top view of the utility model;

[0022] Figure 4 It is a bottom view of the utility model;

[0023] In the figure: 1. Cylinder head body; 11. Outer cover connecting hole; 2. Side wall; 21. Boss; 22. Valve mounting cavity; 23. Concave cavity; 3. Rocker arm seat; 31. Lubricating oil hole; 32. Connecting rib; 33. Connecting seat; 34. Connecting platform; 35. Positioning hole; 5. Air inlet; 6. Air outlet; 7. Pin mounting hole; 8. Base; 81. Piston rod mounting cavity; 82. Combustion chamber; 83. Air inlet duct; 84. Air outlet duct; 85. Spark plug hole. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0025] See also Figure 1 and Figure 2The utility model provides a technical solution: an integrated cylinder head with an interlaced rocker arm, including a side wall 2 formed on the upper end surface of a cylinder head body 1, a boss 21 and a cavity 23 formed in the side wall 2, the cavity 23 formed beside the boss 21, and four rocker arm seats 3 formed at the junction of the boss 21 and the cavity 23. The rocker arm seats 3 are distributed in parallel and on the same straight line, so that the rocker arm seats 3 are connected to the boss 21 and the cavity 23 at the same time, thereby enhancing the rigidity and strength of the rocker arm seats 3, so that the rocker arm seats 3 and the cylinder head body 1 form a As a whole, the rocker arm seat 3 is provided with a pin shaft mounting hole 7, which is also on the same straight line. The height of the pin shaft mounting hole 7 is higher than the side wall 2 and is used to install the mounting shaft of the rocker arm. The two outer rocker arm seats 3 are provided with positioning holes 35, and the positioning holes 35 are located on the outer surface of the rocker arm seat 3. The positioning holes 35 are used for inserting pins or other fasteners to position the two ends of the mounting shaft of the rocker arm to prevent the rocker arm mounting shaft in the rocker arm seat 3 from axial movement, which further causes it to collide with the external support and generate noise.

[0026] Lubricating oil holes 31 are provided on the two outer rocker seats 3, and the lubricating oil holes 31 are located on one side of the positioning hole 35. The lubricating oil enters the rocker arm mounting shaft and the rocker arm from the lubricating oil holes 31 to lubricate the rocker arm and reduce the loss of the rocker arm seat 3 caused by the rotation of the rocker arm mounting shaft in the rocker arm seat 3.

[0027] like Figure 3 As shown, the thickness of the two outer rocker seats 3 is greater than that of the two inner rocker seats 3, the two outer rocker seats 3 are respectively connected to the side walls 2, and connecting ribs 32 are formed between the two inner rocker seats 3 to enhance the strength of the two inner rocker seats 3, a connecting platform 34 is also formed between the side wall 2 and the boss 21, and a connecting seat 33 is also formed on the surface of the connecting platform 34, the connecting seat 33 is U-shaped, and is formed between the two inner rocker seats 3, further enhancing the strength and rigidity between the two inner rocker seats 3, and the connecting ribs 32 are formed on the surface of the connecting seat 33.

[0028] Two piston rod mounting cavities 81 are provided in the concave cavity 23, and the piston rod mounting cavities 81 are respectively provided on the left and right sides of the connecting platform 34. The position of the piston rod mounting cavity 81 is in the same straight line as the center line between the outer rocker arm seat and the inner rocker arm seat, so that the position of the piston rod mounting cavity 81 corresponds to the position of the rocker arm, thereby causing the rocker arm to swing up and down.

[0029] like Figure 4As shown, an air inlet 5 and an air outlet 6 are respectively formed on both side surfaces of the cylinder head body 1, a base 8 is formed on the lower end surface of the cylinder head body 1, a bathtub-shaped combustion chamber 82 is formed in the base 8, an upwardly recessed air inlet duct 83 and an air outlet duct 84 are formed on the top surface of the combustion chamber 82, the air inlet duct 83 and the air outlet duct 84 are respectively connected to the air inlet 5 and the air outlet 6, the gas is introduced into the combustion chamber 82 through the air inlet 5 and the air inlet duct 83 in turn, the combustion chamber 82 is fully burned, and the gas is discharged from the air outlet 6 through the air outlet duct 84, the valve arrangement structure is simplified, the shape and area of ​​the combustion chamber 82 are improved, the surface area ratio is between 2.6 and 2.8, and the three-stage emission indicators are met.

[0030] Two valve installation cavities 22 are also provided on the boss 21. The valve installation cavities 22 are respectively formed on the top surfaces of the intake duct 83 and the outlet duct 84. When the air pressure in the combustion chamber 82 is too high, the rocker arm is pushed to swing by the up and down movement of the piston rod, further opening the valve on the valve installation cavity 22 to relieve pressure.

[0031] A spark plug hole 85 is also provided in the combustion chamber 82. The spark plug hole 85 extends upward to the outside of the side wall 2. The upper end of the spark plug hole 85 is provided on the outside of the side wall 2, and the lower end extends into the combustion chamber 82, so as to facilitate the installation of the spark plug.

[0032] Four outer cover connecting holes 11 are also provided on the cylinder head main body 1, two of which are provided on the outer side of the side wall 2, and the other two are provided on both sides of the piston rod mounting cavity 81, and are located inside the side wall 2. By providing the four outer cover connecting holes 11 on the outer side and the inner side of the side wall 2, the cylinder head cover is connected to the inner side and the outer side of the cylinder head side wall at the same time, thereby enhancing the connection strength between the cylinder head cover and the cylinder head.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An integrated cylinder head with a rocker arm installed in a through-type manner, comprising a cylinder head body, characterized in that: A side wall is formed on the upper end surface of the cylinder head body, a boss and a cavity are formed in the side wall, four rocker seats are formed at the junction of the boss and the cavity, the rocker seats are on the same straight line, pin mounting holes are opened on the rocker seats, the height of the pin mounting holes is higher than the side wall, and the pins of the rocker arms are installed, and positioning holes are opened on the two outer rocker seats, and the positioning holes are located on the outer surfaces of the rocker seats.

2. The integrated cylinder head with a through-mounted rocker arm according to claim 1 is characterized in that: Lubricating oil holes are provided on the rocker arm seats at the two outer sides, and the lubricating oil holes are located on one side of the positioning hole.

3. The integrated cylinder head with a through-mounted rocker arm according to claim 1 is characterized in that: The thickness of the two outer rocker seats is greater than that of the two inner rocker seats. The two outer rocker seats are connected to the side walls respectively. Connecting ribs are formed between the two inner rocker seats. A connecting platform is formed between the side walls and the side faces of the boss. The connecting platform is formed in the middle of the concave cavity. A connecting seat is also formed on the surface of the connecting platform. The connecting seat is U-shaped and formed between the two inner rocker seats.

4. The integrated cylinder head with a through-mounted rocker arm according to claim 3 is characterized in that: Two piston rod installation cavities are provided in the concave cavity, and the piston rod installation cavities are respectively provided on the left and right sides of the connecting platform. The positions of the piston rod installation cavities are in the same straight line as the center line between the outer rocker arm seat and the inner rocker arm seat.

5. The integrated cylinder head with a through-mounted rocker arm according to claim 1 is characterized in that: An air inlet and an air outlet are respectively formed on both side surfaces of the cylinder head body, a base is formed on the lower end surface of the cylinder head body, a bathtub-shaped combustion chamber is formed in the base, an upwardly recessed air inlet and air outlet are formed on the top surface of the combustion chamber, and the air inlet and air outlet are respectively connected to the air inlet and air outlet.

6. The integrated cylinder head with a through-mounted rocker arm according to claim 5 is characterized in that: The boss is also provided with two valve installation cavities, and the valve installation cavities are respectively formed on the top surfaces of the inlet passage and the outlet passage.

7. The integrated cylinder head with a through-mounted rocker arm according to claim 6 is characterized in that: A spark plug hole is also provided in the combustion chamber, and the spark plug hole extends upward to the outside of the side wall.

8. The integrated cylinder head with a through-mounted rocker arm according to claim 1 is characterized in that: The cylinder head body is also provided with four outer cover connection holes, two of which are provided on the outside of the side wall, and the other two are provided on both sides of the piston rod mounting cavity and are located inside the side wall.

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