Tool for disassembling spark plug sheath of natural gas engine

Abstract

The utility model discloses a tool for disassembling a natural gas engine spark plug sheath, which comprises a guide head and an extension bar, the guide head is in interference fit with the extension bar, the bottom of the surface of the extension bar is provided with a tooth head, and the top end of the extension bar is fixedly connected with a connector. The tool is redesigned according to the size of the spark plug sheath, on the basis that the spark plug sheath and an engine cylinder cover are not damaged, the man-machine effect and the service life of the tool are well improved, the guide head at the front end of the tool is inserted into the spark plug sheath and the threaded sleeve, the tooth head on the tool is inserted into the corresponding tooth on the threaded sleeve, and therefore the spark plug sheath can be fixed. The spark plug sheath can be detached by counterclockwise rotation; the guide head at the front end of the tool can avoid slipping in the dismounting process, the tail end of the tooth head on the tool is in arc transition and is subjected to heat treatment, breakage of the tool in the dismounting process is avoided, and the service life of the tool is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of natural gas engines. Specifically, the utility model relates to a tool for disassembling the spark plug sheath of a natural gas engine. Background Technique

[0002] A spark plug is a component in the ignition system of a modern gasoline engine that introduces high-voltage current into the cylinder to generate an electric spark and ignite the combustible mixture. After the automobile has used the spark plug for a long time and many times, the spark plug may gradually age and become scrapped. Therefore, it is necessary to replace the spark plug. Due to the high working environment temperature of the spark plug, high-temperature sintering will occur between the spark plug and the sheath, making it difficult to remove both the sheath and the spark plug.

[0003] During the disassembly process of a natural gas engine, it is necessary to disassemble the spark plug sheath for inspection or replacement. Existing tools have difficulties in disassembly, and are prone to breakage and slipping during the disassembly process. A tool for disassembling the spark plug sheath of a natural gas engine is redesigned according to the size of the spark plug sheath. Without damaging the spark plug sheath and the engine cylinder head, the tool has been greatly improved in terms of ergonomics and service life. Content of the Utility Model

[0004] The utility model provides a tool for disassembling the spark plug sheath of a natural gas engine, which solves the problems raised in the above background technique.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows: A tool for disassembling the spark plug sheath of a natural gas engine includes a guiding head and an extension rod. The guiding head and the extension rod are in interference fit. The bottom of the surface of the extension rod is provided with tooth heads, and the top end of the extension rod is fixedly connected with a connecting head.

[0006] Preferably, the diameter dimensions of the guiding head are a = 20mm and c = 24mm.

[0007] Preferably, the dimensions of the tooth heads are b = 4.8mm and d = 5.5mm.

[0008] The beneficial effects of adopting the above technical solutions are as follows:

[0009] The utility model inserts the guiding head at the front end of the tool into the spark plug sheath and the bushing, and the tooth heads on the tool are inserted into the corresponding teeth on the bushing. Rotating counterclockwise can disassemble the spark plug sheath. The guiding head at the front end of the tool can prevent slipping during the disassembly process. The end of the tooth head on the tool has an arc transition and is heat-treated to avoid breakage during the disassembly process of the tool and improve the service life of the tool. Description of the Drawings

[0010] Figure 1It is a perspective view of the present utility model;

[0011] Figure 2 It is a schematic structural view of the extension rod of the present utility model;

[0012] Figure 3 It is a front view of the present utility model;

[0013] Figure 4 It is a sectional view of the present utility model;

[0014] Figure 5 It is a bottom view of the present utility model;

[0015] Wherein:

[0016] 1. Guide head; 2. Extension rod; 3. Tooth head; 4. Connector. Specific embodiments

[0017] The following is a more detailed description of the specific embodiments of the present utility model by referring to the accompanying drawings and describing the embodiments, aiming to help those skilled in the art have a more complete, accurate and in-depth understanding of the concept and technical solution of the present utility model and facilitate its implementation.

[0018] As Figures 1 to 5 shown, the present utility model is a tool for disassembling the spark plug sheath of a natural gas engine. Redesigned according to the size of the spark plug sheath, on the basis of not damaging the spark plug sheath and the engine cylinder head, the tool has been well improved in terms of ergonomics and service life.

[0019] Specifically, as Figures 1 to 5 shown, it includes a guide head 1 and an extension rod 2. There is an interference fit between the guide head 1 and the extension rod 2. At the bottom of the surface of the extension rod 2, a tooth head 3 is provided. At the top end of the extension rod 2, a connector 4 is fixedly connected. The number of tooth heads 3 is four, and they are evenly distributed at the bottom end of the extension rod 2.

[0020] The diameter size of the guide head 1 is a = 20 mm, c = 24 mm, and the size of the tooth head 3 is b = 4.8 mm, d = 5.5 mm.

[0021] The following uses specific embodiments to elaborate on the specific working methods: Embodiment 1

[0022] Insert the guide head 1 at the front end of the tool into the spark plug sheath and the bushing. Insert the tooth head 3 on the tool into the corresponding teeth on the bushing, and rotate counterclockwise to disassemble the spark plug sheath; the guide head 1 at the front end of the tool can prevent slipping during the disassembly process. The end of the tooth head 3 on the tool has an arc transition and is heat-treated to prevent the tool from breaking during the disassembly process and improve the service life of the tool.

[0023] The above has made an exemplary description of the present utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above-mentioned manner. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present utility model; or without improvement, the above-mentioned concept and technical solution of the present utility model are directly applied to other occasions, they are all within the protection scope of the present utility model.

Claims

1. A tool for disassembling the spark plug sheath of a natural gas engine, comprising a guide head (1) and an extension rod (2), characterized in that: An interference fit is provided between the guide head (1) and the extension rod (2). A tooth head (3) is provided at the bottom of the surface of the extension rod (2). A connection head (4) is fixedly connected to the top end of the extension rod (2).

2. A tool for disassembling the spark plug sheath of a natural gas engine according to claim 1, characterized in that: The diameter dimensions of the guide head (1) are a = 20 mm and c = 24 mm.

3. A tool for disassembling a spark plug sheath of a natural gas engine according to claim 1, characterized in that: The dimensions of the tooth head (3) are b = 4.8 mm and d = 5.5 mm.

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