Engine cylinder head rocker arm device carried on generator

Abstract

The utility model discloses an engine cylinder head rocker arm device carried on a generator, which comprises an exhaust rocker arm shaft, an air inlet rocker arm shaft and a pair of rocker arms, the two rocker arms are respectively arranged on a base corresponding to a cylinder head shell through the exhaust rocker arm shaft and the air inlet rocker arm shaft, and the engine cylinder head rocker arm device further comprises a check block arranged between the two rocker arms. The check block is installed on the cylinder head shell in a screwed mode through a bolt, the inner side end of the exhaust rocker arm shaft and the inner side end of the air inlet rocker arm shaft are blocked on the check block, when the rocker arm works to swing and shake, the check block can be stressed to rotate under the action of the two rocker arm shafts, and a limiting column is arranged on the rotating side of the check block. Fixing of the rocker arm shaft is improved by arranging the check block, so that rotation of the rocker arm shaft caused when the rocker arm works is reduced, out-of-roundness caused by high temperature and rotation of the rocker arm shaft in a shaft hole, allowing the rocker arm shaft to penetrate through, in the base is reduced, and breakage of the base is avoided; and when the check block limits and abuts against the two rocker arm shafts, the situation that only the rocker arm shaft on one side is limited and fixed due to stress rotation is not likely to happen.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to an engine cylinder head rocker arm device mounted on a generator. Background Art

[0002] In the operation of gasoline generators, the main function of the engine rocker arm cylinder head is to convert the rotational motion of the crankshaft or camshaft into the opening and closing motion of the valve. The rocker arm not only transmits force, but also bears large bending moments, so it needs to have sufficient strength and rigidity. When the engine is running continuously at high speed, the rocker arm shaft on the base will rotate and move axially. The continuous friction and high temperature will cause the gasoline engine cylinder head rocker arm base to deform. The shaft hole on the base for the rocker arm shaft to pass through is easy to lose roundness at high temperatures, especially the base at the exhaust end may even break. Utility Model Content

[0003] In view of the defects of the above-mentioned prior art, the technical problem to be solved by the utility model is to provide an engine cylinder head rocker arm device of a gasoline generator which can reduce the deformation of the cylinder head base, prevent the axial shaking and rotation of the rocker arm shaft caused by the out-of-roundness of the shaft hole on the base, and reduce the radial movement of the rocker arm shaft.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: an engine cylinder head rocker arm device mounted on a generator, comprising an exhaust rocker arm shaft, an intake rocker arm shaft and a pair of rocker arms, the two rocker arms are respectively installed on bases corresponding to the cylinder head housing through the exhaust rocker arm shaft and the intake rocker arm shaft, and also includes a stopper arranged between the two rocker arms, the stopper is installed on the cylinder head housing by screwing bolts, the inner ends of the exhaust rocker arm shaft and the intake rocker arm shaft are respectively blocked on the stopper, when the rocker arm swings during operation, the stopper can be forced to rotate under the action of the two rocker arm shafts and a limit column is provided on the rotating side of the stopper.

[0005] Preferably, the outer end of the exhaust rocker arm shaft extends to the outer shell of the cylinder head and is fixed by the outer shell, thereby strengthening the fixation of the exhaust rocker arm shaft.

[0006] Preferably, the outer shell is provided with a hollow column protruding outward, and the outer end of the exhaust rocker arm shaft is fixed by inserting the hollow column.

[0007] Preferably, the inner ends of the exhaust rocker arm shaft and the intake rocker arm shaft are both semicircular shafts, and the vertical surfaces are pressed tightly by a stopper.

[0008] Preferably, the exhaust rocker arm shaft and the intake rocker arm shaft are both arranged to be higher at the front and lower at the rear and tilted.

[0009] Preferably, the stopper is provided with an upwardly bent L-shaped baffle at the abutment point between the inner end of the exhaust rocker arm shaft and the intake rocker arm shaft.

[0010] Preferably, the stopper is fixedly installed on the cylinder head by a right-handed bolt.

[0011] The beneficial effects of the present utility model are as follows: By providing a stopper that can tightly abut against the inner ends of the exhaust rocker arm shaft and the intake rocker arm shaft, the fixation of the rocker arm shaft is improved, thereby reducing the rotation of the rocker arm shaft caused by the operation of the rocker arm, alleviating the out-of-roundness of the shaft hole on the base through which the rocker arm shaft passes under high temperature and the rotation of the rocker arm shaft, avoiding the fracture of the base, and improving the working efficiency and working safety of the rocker arm; The stopper can rotate under the action of the two rocker arm shafts and is limited and fixed by the limit post. When the stopper limits and tightly abuts against the two rocker arm shafts, it is not easy to rotate due to the force, resulting in only limiting and fixing one side of the rocker arm shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the cylinder head;

[0013] Figure 2 is Figure 1 the A-A sectional view of

[0014] Figure 3 is a schematic structural diagram of the rocker arm shaft stopper;

[0015] In the figure: 1 - cylinder head, 2 - exhaust rocker arm shaft, 3 - rocker arm, 4 - rocker arm shaft stopper, 5 - intake rocker arm shaft, 6 - positioning pin. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] In order to better understand the improvements made by the present utility model compared with the prior art, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0017] As Figure 1 shown in FIG. -2, an engine cylinder head rocker arm device mounted on a generator mainly consists of an exhaust rocker arm shaft 2, an intake rocker arm shaft 5, and a pair of rocker arms 3. The exhaust rocker arm shaft 2 and the intake rocker arm shaft 5 are both inserted obliquely with the front end higher than the rear end into the shaft holes on the base through which the rocker arm shaft passes. The two rocker arms 3 are respectively installed on the corresponding bases of the cylinder head housing through the exhaust rocker arm shaft 2 and the intake rocker arm shaft 5.

[0018] To strengthen the fixation of the exhaust rocker arm shaft 2, a hollow column protruding outward is provided on the outer shell. The outer end of the exhaust rocker arm shaft 2 extends to the outer shell of the cylinder head 1, and the outer end of the exhaust rocker arm shaft 2 is inserted into the hollow column for fixation. As Figure 3As shown in the figure, in order to limit and fix the exhaust rocker arm shaft 2 and the intake rocker arm shaft 5, a stop block 4 is provided between the two rocker arms 3. The stop block 4 is installed on the cylinder head housing by screwing bolts. The inner ends of the exhaust rocker arm shaft 2 and the intake rocker arm shaft 5 are both semi-circular shafts, and the inner ends of the exhaust rocker arm shaft 2 and the intake rocker arm shaft 5 are respectively blocked on the stop block 4. L-shaped baffles bent upward are provided at the tightening positions of the stop block 4.

[0019] The stop block 4 tightly abuts against the right side of the exhaust rocker arm shaft 2 and the left side of the intake rocker arm shaft 5. For the convenience of installation, the stop block 4 is fixedly installed on the cylinder head 1 by a right-handed bolt. When the rocker arm 3 swings and shakes during operation, the exhaust rocker arm shaft 2 and the intake rocker arm shaft 5 are limited and fixed by the stop block 4. The stop block 4 rotates under the action of the two rocker arm shafts, and a limit post 6 is provided on the rotating side of the stop block 4, so as to realize the limitation of the exhaust rocker arm shaft 2 and the intake rocker arm shaft 5.

[0020] The above is only the preferred specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent replacements or changes, and should be covered within the protection scope of the present invention.

Claims

1. An engine cylinder head rocker arm device mounted on a generator, comprising an exhaust rocker arm shaft (2), an intake rocker arm shaft (5) and a pair of rocker arms (3), wherein the two rocker arms (3) are respectively mounted on bases corresponding to the cylinder head housing through the exhaust rocker arm shaft (2) and the intake rocker arm shaft (5), and characterized in that: It also includes a stopper (4) arranged between the two rocker arms (3), the stopper (4) being screwed and mounted on the cylinder head housing by means of bolts, the inner ends of the exhaust rocker arm shaft (2) and the intake rocker arm shaft (5) being respectively blocked on the stopper (4), and when the rocker arm (3) is working and swinging, the stopper (4) can be rotated under the action of the two rocker arm shafts, and a limit column (6) is provided on the rotating side of the stopper (4).

2. The engine cylinder head rocker arm device mounted on a generator according to claim 1, characterized in that: The outer end of the exhaust rocker arm shaft (2) extends to the outer shell of the cylinder head (1) and is fixed by the outer shell.

3. The engine cylinder head rocker arm device mounted on a generator according to claim 2, characterized in that: The outer shell is provided with a hollow column protruding outward, and the outer end of the exhaust rocker arm shaft (2) is fixed by inserting into the hollow column.

4. The engine cylinder head rocker arm device mounted on a generator according to claim 1, characterized in that: The inner ends of the exhaust rocker arm shaft (2) and the intake rocker arm shaft (5) are both semicircular shafts, and the vertical surfaces are tightly pressed by a stopper (4).

5. The engine cylinder head rocker arm device mounted on a generator according to claim 1, characterized in that: The exhaust rocker arm shaft (2) and the intake rocker arm shaft (5) are both arranged with a tilt such that they are higher at the front and lower at the rear.

6. The engine cylinder head rocker arm device mounted on a generator according to claim 1, characterized in that: An upwardly bent L-shaped baffle is provided at the abutment points between the baffle (4) and the inner end of the exhaust rocker arm shaft (2) and the intake rocker arm shaft (5).

7. The engine cylinder head rocker arm device mounted on a generator according to claim 1, characterized in that: The stopper (4) is fixedly mounted on the cylinder head (1) by means of right-handed bolts.

Images