Cylinder cover water jacket structure of diesel engine

Abstract

The cylinder cover water jacket structure of the diesel engine comprises a cylinder cover water jacket body, a water cooling jacket is fixedly installed on the front face of the cylinder cover water jacket body, a connecting pipe is fixedly connected to the front face of the water cooling jacket, a water pipe is connected to the tail end of the connecting pipe, and positioning structures are movably installed in the connecting pipe and the water pipe. According to the cylinder cover water jacket structure of the diesel engine, a positioning structure is arranged, a positioning sleeve is inserted into a connecting pipe, an inserting cylinder is inserted into the connecting pipe, a rotating button is rotated, the rotating button synchronously drives a rotating rod to rotate, and due to the fact that a limiting ring has limiting on a threaded cylinder in the vertical direction, the threaded cylinder is connected to the rotating rod in a sleeving mode and moves downwards; and meanwhile, the threaded barrel further extends into the threaded hole in a threaded connection mode, the steps are repeated, the water pipe and the positioning sleeve are further installed and connected, and the connecting pipe and the water pipe are preliminarily installed and fixed through the positioning structure.

Description

Technical Field

[0001] This utility model relates to the field of cylinder head water jacket technology, specifically a cylinder head water jacket structure for a diesel engine. Background Technology

[0002] The cylinder head water jacket has water channels cut into the outer wall of the cylinder liner and is combined with the engine's cooling water system to play a role in cooling. When in use, the cylinder head water jacket needs to be connected to the water pipe of the water-cooled cooling system. The cylinder head water jacket is an important part of the engine cooling system. Its main function is to transfer the temperature of the engine combustion chamber and cylinder inner wall to the coolant through heat conduction, thereby achieving the purpose of cooling.

[0003] According to a utility model patent with Chinese patent application number 202021079491.0, a diesel engine block cooling water jacket is used. Through reasonable design of the cooling circuit, the cooling performance of the diesel engine block cooling water jacket can be improved, ensuring that the diesel engine can work normally and reliably under suitable temperature conditions within the working range and during operation. However, after long-term use, the connection between the water pipe of the water-cooled cooling system and the cylinder head water jacket is prone to wear, resulting in damage to the connection and water leakage. It is also inconvenient to quickly disassemble the water pipe connection for later maintenance. Therefore, it is necessary to propose a cylinder head water jacket structure for diesel engines to solve the above-mentioned problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a cylinder head water jacket structure for a diesel engine, which has the advantages of facilitating the disassembly and maintenance of the cylinder head water jacket connection machine inlet in the later stages, thus solving the problem of inconvenience in maintaining the cylinder head water jacket inlet in the prior art.

[0005] To facilitate the disassembly and maintenance of the cylinder head water jacket connector inlet in the later stages, this utility model provides the following technical solution: a cylinder head water jacket structure for a diesel engine, including a cylinder head water jacket body, a water cooling jacket fixedly installed on the front side of the cylinder head water jacket body, a connecting pipe fixedly connected to the front side of the water cooling jacket, a water pipe connected to the end of the connecting pipe, a positioning sleeve inserted inside the connecting pipe and the water pipe, and a positioning structure movably installed inside the connecting pipe and the water pipe;

[0006] The positioning structure includes a turntable, which is provided on the outer surface of the connecting pipe. A plug-in cylinder is fixedly installed at the bottom of the turntable. A rotating knob is provided inside the turntable. A rotating rod is fixedly connected to the bottom of the rotating knob. A threaded cylinder is sleeved on the outer surface of the rotating rod.

[0007] Furthermore, each of the connecting pipe and the water pipe has a positioning plate on one of its corresponding sides, and the positioning plate is internally threaded with a positioning bolt.

[0008] Furthermore, a sealing ring is provided at the connection between the outer wall of the positioning sleeve and the inner wall of the connecting pipe and the water pipe, and a sealing gasket is provided between the two positioning plates.

[0009] Furthermore, four sets of branch channels are provided on one side of the water-cooling jacket, and the branch channels are connected to the interior of the cylinder head water jacket body.

[0010] Furthermore, a threaded hole is provided on the outer surface of the positioning sleeve, and the threaded cylinder is threadedly connected to the inside of the threaded hole.

[0011] Furthermore, a limiting ring is provided on the outer surface of the threaded cylinder, and the limiting ring is slidably installed on the inner wall of the insertion cylinder.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] The cylinder head water jacket structure of this diesel engine, through the setting of a positioning structure, allows for the following steps during use: first, the positioning sleeve is inserted into the inside of the connecting pipe, then the insert sleeve is inserted into the inside of the connecting pipe, and the knob is rotated. The knob will synchronously drive the rotating rod to rotate. Due to the vertical limitation of the limiting ring on the threaded sleeve, the threaded sleeve is sleeved on the rotating rod and moves downward. At the same time, the threaded sleeve is further threaded and extended into the inside of the threaded hole. The above steps are repeated to further install and connect the water pipe and the positioning sleeve. The positioning structure provides initial installation and fixation of the connecting pipe and the water pipe, solving the problem of inconvenience in later maintenance of the cylinder head water jacket in the prior art.

[0014] The cylinder head water jacket structure of this diesel engine, through the setting of positioning bolts, allows the connecting pipe and water pipe to be connected and fixed to the positioning plate during use, thereby achieving a second connection and fixation between the connecting pipe and water pipe. The positioning structure and positioning bolts provide a double connection and fixation between the connecting pipe and water pipe, resulting in better sealing of the connection and extending the service life of the connecting pipe and water pipe. Attached Figure Description

[0015] Figure 1 This is a three-dimensional view of the cylinder head water jacket structure of this utility model;

[0016] Figure 2 This is a front sectional view of the connecting pipe and water pipe of this utility model;

[0017] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0018] In the diagram: 1. Cylinder head water jacket body; 2. Water cooling jacket; 3. Branch channel; 4. Connecting pipe; 5. Positioning plate; 6. Water pipe; 7. Positioning sleeve; 8. Sealing ring; 9. Positioning structure; 901. Turntable; 902. Insert sleeve; 903. Rotary knob; 904. Rotating rod; 905. Threaded cylinder; 10. Threaded hole; 11. Limiting ring; 12. Positioning bolt. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3 The cylinder head water jacket structure of a diesel engine in this embodiment includes a cylinder head water jacket body 1, a water cooling jacket 2 fixedly installed on the front side of the cylinder head water jacket body 1, a connecting pipe 4 fixedly connected to the front side of the water cooling jacket 2, a water pipe 6 connected to the end of the connecting pipe 4, a positioning sleeve 7 inserted inside the connecting pipe 4 and the water pipe 6, and a positioning structure 9 movably installed inside the connecting pipe 4 and the water pipe 6.

[0021] The positioning structure 9 includes a turntable 901. The turntable 901 is provided on the outer surface of the connecting pipe 4. A plug-in cylinder 902 is fixedly installed at the bottom of the turntable 901. A rotating knob 903 is provided inside the turntable 901. A rotating rod 904 is fixedly connected to the bottom of the rotating knob 903. A threaded cylinder 905 is sleeved on the outer surface of the rotating rod 904.

[0022] In the implementation of the case, by setting the positioning structure 9, when in use, the positioning sleeve 7 is first inserted into the inside of the connecting pipe 4, the insertion cylinder 902 is inserted into the inside of the connecting pipe 4, and the rotating knob 903 is rotated. The rotating knob 903 will synchronously drive the rotating rod 904 to rotate. Since the limiting ring 11 has a vertical limiting on the threaded cylinder 905, the threaded cylinder 905 is sleeved on the rotating rod 904 and moves downward. At the same time, the threaded cylinder 905 is further threaded and extended into the inside of the threaded hole 10. The above steps are repeated to further install and connect the water pipe 6 and the positioning sleeve 7. The positioning structure 9 is used to initially install and fix the connecting pipe 4 and the water pipe 6.

[0023] In the implementation of the case, by setting the positioning bolt 12, during use, the connecting pipe 4 and the water pipe 6 are connected and fixed to the positioning plate 5 through the positioning bolt 12, so that the connecting pipe 4 and the water pipe 6 are connected and fixed again. The positioning structure 9 and the positioning bolt 12 connect and fix the connecting pipe 4 and the water pipe 6 both inside and outside, so that the connection between the connecting pipe 4 and the water pipe 6 has a better sealing performance and extends the service life of the connecting pipe 4 and the water pipe 6.

[0024] In the implementation of the case, by setting a sealing ring 9, a sealing ring 9 is set at the contact surface between the positioning sleeve 7 and the inner wall of the connecting pipe 4 and the water pipe 6, which further improves the sealing performance of the cooling water delivery between the connecting pipe 4 and the water pipe 6. Furthermore, by setting a sealing gasket between the positioning plates 5, the sealing performance of the connecting pipe 4 and the water pipe 6 can be further improved, thus extending the service life of the connecting pipe 4 and the water pipe 6.

[0025] In summary, the cylinder head water jacket structure of this diesel engine, by setting the positioning structure 9, allows for the following steps during use: first, the positioning sleeve 7 is inserted into the inside of the connecting pipe 4, then the insertion sleeve 902 is inserted into the inside of the connecting pipe 4, and the rotating knob 903 is rotated. The rotating knob 903 will synchronously drive the rotating rod 904 to rotate. Since the limiting ring 11 has a vertical limiting effect on the threaded sleeve 905, the threaded sleeve 905 is sleeved on the rotating rod 904 and moves downward. At the same time, the threaded sleeve 905 is further threaded and extended into the threaded hole 10. The above steps are repeated to further install and connect the water pipe 6 and the positioning sleeve 7. The positioning structure 9 provides initial installation and fixation of the connecting pipe 4 and the water pipe 6, solving the problem in the background technology of the inconvenience of later maintenance of the cylinder head water jacket inlet.

[0026] Furthermore, by setting the positioning bolt 12, during use, the connecting pipe 4 and the water pipe 6 are connected and fixed to the positioning plate 5 through the positioning bolt 12, so that the connecting pipe 4 and the water pipe 6 are connected and fixed again. The positioning structure 9 and the positioning bolt 12 connect and fix the connecting pipe 4 and the water pipe 6 both inside and outside, so that the connection between the connecting pipe 4 and the water pipe 6 has better sealing performance and extends the service life of the connecting pipe 4 and the water pipe 6.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cylinder head water jacket structure for a diesel engine, comprising a cylinder head water jacket body (1), characterized in that: A water cooling jacket (2) is fixedly installed on the front side of the cylinder head water jacket body (1). A connecting pipe (4) is fixedly connected to the front side of the water cooling jacket (2). A water pipe (6) is connected to the end of the connecting pipe (4). A positioning sleeve (7) is inserted into the inside of the connecting pipe (4) and the water pipe (6). A positioning structure (9) is movably installed inside the connecting pipe (4) and the water pipe (6). The positioning structure (9) includes a turntable (901). The turntable (901) is provided on the outer surface of the connecting pipe (4). A plug-in cylinder (902) is fixedly installed at the bottom of the turntable (901). A rotating knob (903) is provided inside the turntable (901). A rotating rod (904) is fixedly connected to the bottom of the rotating knob (903). A threaded cylinder (905) is sleeved on the outer surface of the rotating rod (904).

2. The cylinder head water jacket structure of a diesel engine according to claim 1, characterized in that: Positioning plates (5) are provided on one side of each of the connecting pipe (4) and the water pipe (6), and positioning bolts (12) are threaded inside the positioning plates (5).

3. The cylinder head water jacket structure of a diesel engine according to claim 2, characterized in that: A sealing ring (8) is provided at the connection between the outer wall of the positioning sleeve (7) and the inner wall of the connecting pipe (4) and the water pipe (6), and a sealing gasket is provided between the two positioning plates (5).

4. The cylinder head water jacket structure of a diesel engine according to claim 1, characterized in that: The water cooling jacket (2) has four sets of branch channels (3) on one side, and the branch channels (3) are connected to the inside of the cylinder head water jacket body (1).

5. The cylinder head water jacket structure of a diesel engine according to claim 1, characterized in that: The outer surface of the positioning sleeve (7) is provided with a threaded hole (10), and the threaded cylinder (905) is threadedly connected to the inside of the threaded hole (10).

6. The cylinder head water jacket structure of a diesel engine according to claim 1, characterized in that: A limiting ring (11) is provided on the outer surface of the threaded cylinder (905), and the limiting ring (11) is slidably installed on the inner wall of the plug-in cylinder (902).

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