Exhaust valve for engine

Abstract

The utility model discloses an exhaust valve for an engine. The exhaust valve comprises a valve body and an execution piece installed on one side of the valve body. The execution piece is connected with a valve clack shaft on the valve body through an arranged transmission assembly. The transmission assembly comprises a first connecting plate connected with a driving shaft of the execution piece and a second connecting plate connected with the valve clack shaft. The first connecting plate is connected with a driving shaft of the execution piece through a notch formed in the first connecting plate, and the second connecting plate is connected with the valve clack shaft through a polygonal hole formed in the second connecting plate. The notch is connected with the driving shaft of the execution piece, and the polygonal hole is connected with the valve clack shaft, so that the connection between the transmission assembly and the execution piece and the connection between the transmission assembly and the valve clack are more accurate and stable, and the working performance of the exhaust valve is improved; the structure is simple, and manufacturing and mounting are easy; therefore, the phenomenon that the valve clack shaft or a driving shaft of the execution piece is prone to breakage in the using process due to the fact that the two ends of the transmission assembly are welded to the execution piece and the valve clack shaft is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of engine exhaust equipment, in particular to an exhaust valve for an engine. Background Art

[0002] In the engine exhaust system, the exhaust valve operating device is a key component to ensure the normal operation of the exhaust valve. However, due to the welding method used in the traditional operating device, the connection is often overburned during the welding process, which causes the drive shaft of the actuator and the valve disc shaft to bend, deform, and break during use, thereby affecting the working performance of the exhaust valve. Therefore, it is necessary to design a new exhaust valve operating device to improve the stability and reliability of its connection. Utility Model Content

[0003] The purpose of the utility model is to provide an exhaust valve for an engine to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an exhaust valve for an engine, comprising a valve body and an actuator installed on one side of the valve body; the actuator is connected to a valve flap shaft on the valve body through a transmission assembly; the transmission assembly comprises a first connecting plate connected to the driving shaft of the actuator and a second connecting plate connected to the valve flap shaft; the first connecting plate is connected to the driving shaft of the actuator through a notch, and the second connecting plate is connected to the valve flap shaft through a polygonal hole.

[0005] As a preferred technical solution of the present utility model: the transmission assembly includes a connecting rod, and one end of the connecting rod is connected to the first connecting plate through a first ball-end connecting rod.

[0006] As a preferred technical solution of the utility model: the other end of the connecting rod is connected to the second connecting plate through a second ball-end connecting rod.

[0007] As a preferred technical solution of the utility model: the driving shaft of the actuator passes through the first connecting plate and is connected to a first nut.

[0008] As a preferred technical solution of the utility model: one end of the valve flap shaft passes through the second connecting plate and is connected to a second nut.

[0009] As a preferred technical solution of the present utility model: the first nut and the second nut are both self-locking nuts.

[0010] As a preferred technical solution of the utility model: both ends of the linkage rod are provided with threaded parts, and the threaded parts are connected with a third nut.

[0011] By adopting the above technical solution, the utility model has the following beneficial effects: 1. The notch is connected to the driving shaft of the actuator, and the polygonal hole is used to connect the valve disc shaft, so that the connection between the transmission assembly and the actuator and the valve disc is more accurate and stable, and the working performance of the exhaust valve is improved; in particular, the problem of bending, deformation and breakage of the driving shaft and the valve disc shaft due to overburning during use caused by welding when the transmission assembly is connected to the driving shaft of the actuator and the valve disc shaft is eliminated;

[0012] 2. Since the corresponding shafts are connected by notches and polygonal holes, it not only solves the problem that the two ends of the transmission assembly are welded on the actuator and the valve disc shaft, which causes the valve disc shaft or the actuator drive shaft to break during use, but also has the advantages of simple structure, easy manufacturing, installation and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the exploded structure of the transmission assembly and the valve body of the utility model;

[0015] Figure 3 It is a schematic diagram of the main structure of the transmission assembly of the utility model.

[0016] In the figure: 1. valve body; 2. actuator; 3. transmission assembly; 30. connecting rod; 31. first ball head connecting rod; 32. first connecting plate; 33. second connecting plate; 34. polygonal hole; 35. notch; 36. second ball head connecting rod; 37. threaded portion; 38. third nut; 4. valve disc shaft; 5. first nut; 6. second nut. DETAILED DESCRIPTION

[0017] Embodiments of the present utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present utility model, and should not be construed as limitations on the present utility model. In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "upper surface", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0018] See also Figure 1-3The utility model provides an embodiment: an exhaust valve for an engine, comprising a valve body 1, an actuator 2 installed on one side of the valve body 1; the actuator 2 is connected to a valve flap shaft 4 on the valve body 1 through a transmission assembly 3; the transmission assembly 3 comprises a first connecting plate 32 connected to the driving shaft of the actuator 2 and a second connecting plate 33 connected to the valve flap shaft 4; the first connecting plate 32 is connected to the driving shaft of the actuator through a notch 35, and the second connecting plate 33 is connected to the valve flap shaft 4 through a polygonal hole 34.

[0019] In summary, the notch 35 is used to connect with the driving shaft of the actuator 2, and the polygonal hole 34 is used to connect with the valve flap shaft 4, so that the connection between the transmission assembly 3 and the actuator 2 and the valve flap shaft 4 is more accurate and stable, thereby improving the working performance of the exhaust valve; in particular, the problem of bending, deformation and breakage of the driving shaft and the valve flap shaft 4 due to overburning during use caused by welding when the transmission assembly 3 is connected with the driving shaft of the actuator 2 and the valve flap shaft 4 is eliminated;

[0020] At the same time, since the groove 35 and the polygonal hole 34 are used to connect with the corresponding shaft, it not only solves the problem that the two ends of the transmission assembly are welded to the actuator and the valve flap shaft 4, which causes the valve flap shaft 4 or the driving shaft of the actuator 2 to be easily broken during use, but also has the advantages of simple structure, easy manufacturing and installation, and easy assembly.

[0021] In order to improve the smoothness of the transmission assembly 3 during power transmission, the transmission assembly 3 includes a connecting rod 30, and one end of the connecting rod 30 is connected to the first connecting plate 32 through a first ball head connecting rod 31.

[0022] Furthermore, the other end of the connecting rod 30 is connected to the second connecting plate 33 via a second ball-end connecting rod 36 .

[0023] In summary, the ball connection can be used to achieve power transmission of different axes, provide multi-angle rotation, enable the steering mechanism to steer smoothly, reduce vibration and achieve smooth steering.

[0024] On the basis of the above solution, the driving shaft of the actuator 2 passes through the first connecting plate 32 and is connected to the first nut 5. Further, one end of the valve flap shaft 4 passes through the second connecting plate 33 and is connected to the second nut 6. Specifically, the first nut 5 and the second nut 6 are both self-locking nuts.

[0025] To summarize, by tightening the self-locking nut, the valve disc shaft 4 and the drive shaft are tightly fixed. Therefore, while ensuring reliable connection between the transmission assembly 3 and the actuator 2 and the valve body 1, disassembling the two nuts facilitates the installation and replacement of the transmission assembly 3, thereby solving the problem that the transmission assembly 3 in the existing equipment is difficult to disassemble after installation.

[0026] At the same time, in order to facilitate the processing of the notch 35 and the polygonal hole 34, the notch 35 is processed into a waist-shaped groove, and the polygonal hole 34 is processed into a rectangular hole or a trapezoidal hole, so that the square hole is locked with a self-locking nut to achieve a stable connection between the exhaust valve disc shaft and the drive shaft.

[0027] Furthermore, since both ends of the connecting rod 30 are provided with a threaded portion 37, and the threaded portion 37 is threadedly engaged with the third nut 38, when the two ball head connecting rods are threadedly engaged with the threaded portion 37, the rotating connecting rod 30 can adjust the gap between the two ball head connecting rods. After the adjustment is completed, the third nut 38 is tightened until one side of the third nut 38 is pressed against the cross-section of the ball head connecting rod, thereby ensuring that the gap between the two ball head connecting rods is stable.

[0028] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. An exhaust valve for an engine, characterized in that: It comprises a valve body (1) and an actuator (2) installed on one side of the valve body (1); The actuator (2) is connected to the valve disc shaft (4) on the valve body (1) via a transmission assembly (3); The transmission assembly (3) comprises a first connecting plate (32) connected to the driving shaft of the actuator (2) and a second connecting plate (33) connected to the valve flap shaft (4); The first connecting plate (32) is connected to the driving shaft of the actuator via a provided notch (35), and the second connecting plate (33) is connected to the valve flap shaft (4) via a provided polygonal hole (34).

2. An exhaust valve for an engine according to claim 1, characterized in that: The transmission assembly (3) comprises a connecting rod (30), and one end of the connecting rod (30) is connected to the first connecting plate (32) via a first ball-end connecting rod (31).

3. An exhaust valve for an engine according to claim 2, characterized in that: The other end of the connecting rod (30) is connected to the second connecting plate (33) via a second ball-end connecting rod (36).

4. An exhaust valve for an engine according to claim 2 or 3, characterized in that: The driving shaft of the actuator (2) passes through the first connecting plate (32) and is connected to a first nut (5).

5. An exhaust valve for an engine according to claim 4, characterized in that: One end of the valve flap shaft (4) passes through the second connecting plate (33) and is connected to a second nut (6).

6. An exhaust valve for an engine according to claim 5, characterized in that: The first nut (5) and the second nut (6) are both self-locking nuts.

7. An exhaust valve for an engine according to claim 6, characterized in that: Both ends of the linkage rod (30) are provided with threaded portions (37), and the threaded portions (37) are connected to a third nut (38).

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