Engine cylinder head

Abstract

The utility model belongs to the technical field of engines, and particularly relates to an engine cylinder head, which comprises a cylinder head, more than two bearing seats are coaxially arranged on the cylinder head, a cam shaft and a rocker arm shaft are rotatably connected onto the bearing seats, and reinforcing plate bodies are arranged on more than two continuously adjacent bearing seats. And the left side part and the right side part of each bearing seat are fixedly connected with the reinforcing plate body through fastening screws. The bearing seat is simple in structure, reasonable in design and low in cost, the position structure between the bearing seats is fixed through the additionally-arranged reinforcing plate body, then the structural rigidity of the bearing seats can be enhanced, deformation of the bearing seats under the action of high temperature and alternating force is avoided, and it is ensured that the fit clearance between the rocker arm and the intake and exhaust valve is kept unchanged.

Description

Technical field:

[0001] The utility model belongs to the technical field of engines, in particular to an engine cylinder head. Background technology:

[0002] A motorcycle engine ignites the fuel mixture that enters the cylinder and converts the heat energy generated by its combustion into mechanical energy. The cylinder is mainly composed of a cylinder block, a cylinder head, a cylinder cover, a camshaft and a crankcase. The cylinder head is provided with an intake valve for the fuel mixture to enter, and an exhaust valve for the exhaust gas to be discharged. The opening of the intake valve and the exhaust valve is controlled by the camshaft rotating on the cylinder head driving the rocker arm, and the cam end of the camshaft presses against the rocker arm to push the corresponding valve to open.

[0003] However, due to the limited internal space of the existing cylinder head, structural avoidance is made for the installation of the camshaft, stud assembly holes, rocker arm shaft and other parts, which weakens the strength of the bearing seat used to install the rocker arm shaft and camshaft. When the engine is running, under the action of high temperature and alternating force, the assembly clearance of the rocker arm shaft is easily deformed, which in turn causes the fitting clearance between the rocker arm and the corresponding valve to change, affecting the normal operation and performance of the engine. Summary of the invention:

[0004] The purpose of the utility model is to provide an engine cylinder head, which has a simple structure, reasonable design and low cost. An additional reinforcement plate is used to enhance the structural rigidity of the bearing seat, thereby preventing it from deforming under high temperature and alternating force.

[0005] The utility model is achieved in this way:

[0006] The engine cylinder head includes a cylinder head, on which more than two bearing seats are coaxially arranged, and a camshaft and a rocker arm shaft are rotatably connected to the bearing seats. A reinforcement plate is arranged on two or more consecutive adjacent bearing seats, and the left and right sides of each bearing seat are fixedly connected to the reinforcement plate by fastening screws.

[0007] In the above-mentioned engine cylinder head, the cylinder head is a single-cylinder cylinder head, two bearing seats are provided, and the four corners of the reinforcement plate are fixedly connected to the corresponding side portions of the two bearing seats respectively.

[0008] In the above-mentioned engine cylinder head, the reinforcing plate is horizontally arranged on the top surface of the bearing seat.

[0009] In the above-mentioned engine cylinder head, the reinforcing plate body includes an intermediate plate portion and connecting feet formed by extending outward at its four corners respectively, and the spacing between the two connecting feet connected to one of the bearing seats is smaller than the spacing between the two connecting feet connected to the other bearing seat.

[0010] The outstanding advantages of the utility model compared with the prior art are:

[0011] The utility model has a simple structure, reasonable design and low cost. The position structure between the bearing seats is fixed by an additional reinforcement plate, thereby enhancing the structural rigidity of the bearing seats to avoid deformation under high temperature and alternating force, thereby ensuring that the fitting clearance between the rocker arm and the intake and exhaust valves remains unchanged. Description of the drawings:

[0012] Figure 1 It is an overall stereogram of the utility model.

[0013] In the figure: 1. Cylinder head; 2. Bearing seat; 3. Camshaft; 4. Rocker arm; 5. Reinforcement plate; 6. Fastening screws; 7. Middle plate; 8. Connecting foot. Specific implementation method:

[0014] The present invention is further described below with reference to specific embodiments. Figure 1 :

[0015] The engine cylinder head includes a cylinder head 1, on which more than two bearing seats 2 are coaxially arranged, and a camshaft 3 and a rocker arm shaft are rotatably connected to the bearing seats 2. A reinforcement plate 5 is arranged on two or more adjacent bearing seats 2, and the left and right sides of each bearing seat 2 are fixedly connected to the reinforcement plate 5 by fastening screws 6.

[0016] The utility model has a simple structure, reasonable design and low cost. The position structure between the bearing seats 2 is fixed by the additional reinforcement plate 5, thereby enhancing the structural rigidity of the bearing seat 2 to avoid deformation under the action of high temperature and alternating force, thereby ensuring that the fitting clearance between the rocker arm 4 and the intake and exhaust valves remains unchanged.

[0017] Furthermore, in this embodiment, the structure is applied to a motorcycle, whose engine is a horizontal bar engine, that is, the cylinder head 1 is a single-cylinder cylinder head 1, and two bearing seats 2 are provided, so the four corners of the reinforcement plate 5 are fixedly connected to the corresponding sides of the two bearing seats 2 respectively.

[0018] At the same time, in order to prevent the processing plate from interfering with the working action of the rocker arm 4 or other parts, the reinforcement plate 5 is horizontally arranged on the top surface of the bearing seat 2.

[0019] In addition, in order to reasonably optimize the structure of the processing plate body so that it can provide better supporting strength for the bearing seat 2, the reinforcement plate body 5 includes an intermediate plate portion 7 and connecting feet 8 formed by extending outward at its four corners. The spacing between the two connecting feet 8 connected to one of the bearing seats 2 is smaller than the spacing between the two connecting feet 8 connected to the other bearing seat 2.

[0020] The above embodiment is only one of the preferred embodiments of the present utility model, and is not intended to limit the scope of implementation of the present utility model. Therefore, any equivalent changes made based on the shape, structure, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An engine cylinder head, comprising a cylinder head (1), wherein two or more bearing seats (2) are coaxially arranged on the cylinder head (1), and a camshaft (3) and a rocker arm shaft are rotatably connected to the bearing seats (2), characterized in that: A reinforcing plate body (5) is provided on two or more consecutive adjacent bearing seats (2), and the left and right side parts of each bearing seat (2) are fixedly connected to the reinforcing plate body (5) by means of fastening screws (6).

2. The engine cylinder head according to claim 1, characterized in that: The cylinder head (1) is a single-cylinder cylinder head (1), two bearing seats (2) are provided, and the four corners of the reinforcing plate body (5) are respectively fixedly connected to the corresponding side portions of the two bearing seats (2).

3. The engine cylinder head according to claim 1 or 2, characterized in that: The reinforcing plate body (5) is horizontally arranged on the top surface of the bearing seat (2).

4. The engine cylinder head according to claim 2, characterized in that: The reinforcing plate body (5) comprises an intermediate plate portion (7) and connecting legs (8) formed by extending outward at four corners thereof, wherein the spacing between two connecting legs (8) connected to one of the bearing seats (2) is smaller than the spacing between two connecting legs (8) connected to another bearing seat (2).

Images