Supporting structure for fixing heat insulation cotton of engine exhaust manifold

Abstract

The utility model relates to the technical field of engines, and discloses a supporting structure for fixing heat insulation cotton of an engine exhaust manifold, which comprises an engine main body, a cylinder cover and the exhaust manifold are arranged on the engine main body, a heat insulation cotton support is fixed between the cylinder cover and the exhaust manifold, the heat insulation cotton is covered on the exhaust manifold, and the heat insulation cotton support is fixed on the engine main body. The heat insulation cotton is fixed on a heat insulation cotton support, and the heat insulation cotton support is formed by splicing a plurality of V-shaped thin plates and tightly attached to a cylinder cover and a V-shaped flange of an exhaust manifold. A plurality of screw hole fixing heat insulation cotton supports are additionally arranged on the side face of the cylinder cover, the heat insulation cotton supports are bent at the top of the cylinder cover and punched to weld nuts or bolts, so that a plurality of fixing screw hole structures can be generated above the cylinder cover, and a plurality of fixing screw hole structures can be additionally arranged below the exhaust manifold in the mode that the nuts or the bolts are welded through punching and the like. The heat insulation cotton is tightly attached to the cylinder cover housing and the engine body without assembly gaps, and the purposes of safe heat insulation and protection are achieved.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, specifically to a support structure for fixing the heat insulation cotton of an engine exhaust manifold. Background Technology

[0002] Every year, a large number of non-road agricultural machinery engines, especially cotton harvesters and corn harvesters, catch fire and are destroyed due to inadequate heat insulation, resulting in significant economic losses and posing personal safety risks to drivers.

[0003] The thermal insulation of the engine exhaust manifold has gaps because the cylinder head top surface and the engine block did not have pre-drilled holes for fastening bolts. This gaps prevent the insulation cotton from adhering tightly to the cylinder head and engine block, and the lack of thermal insulation at these gaps poses a fire risk. Utility Model Content

[0004] The technical problem this invention aims to solve is that there is an assembly gap between the engine exhaust manifold insulation cotton and the cylinder head, which can easily lead to overheating and ignition.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is to provide a support structure for fixing heat insulation cotton in an engine exhaust manifold, including an engine body, a cylinder head and an exhaust manifold on the engine body, a heat insulation cotton bracket fixed between the cylinder head and the exhaust manifold, heat insulation cotton covering the exhaust manifold, the heat insulation cotton being fixed on the heat insulation cotton bracket, the heat insulation cotton bracket being spliced ​​from multiple V-shaped thin plates, which are closely attached to the V-shaped flanges of the cylinder head and the exhaust manifold.

[0006] Optionally, a plurality of first screw holes are provided at a wider position above the heat insulation cotton bracket, and a second screw hole is provided on the cylinder head at a position corresponding to the first screw holes, with bolts provided in the first and second screw holes.

[0007] Optionally, a plurality of third screw holes are provided at a narrower position below the heat insulation cotton bracket, and the lower end of the heat insulation cotton is fixed to the third screw holes by bolts, and the position of the third screw holes is lower than that of the exhaust manifold.

[0008] Optionally, the top of the heat insulation cotton bracket is bent toward the cylinder head, and the top of the bent heat insulation cotton bracket is provided with multiple fourth screw holes, and the upper end of the heat insulation cotton is fixed to the fourth screw holes by bolts.

[0009] In summary, this utility model adds multiple screw holes to the side of the cylinder head to fix the heat insulation cotton bracket. The heat insulation cotton bracket is bent at the top of the cylinder head and holes are drilled and welded with nuts or bolts, creating multiple fixing screw hole structures on the top of the cylinder head. By extending the bracket downwards and drilling and welding nuts or bolts, multiple fixing screw hole structures can be added below the exhaust manifold. This ensures the heat insulation cotton is tightly attached to the cylinder head cover and engine block without any assembly gaps, achieving the purpose of safe heat insulation protection. Simultaneously, the heat insulation cotton bracket, tightly attached to the side of the cylinder head, adopts an inverted V-shaped structure design, closely adhering to the V-shaped flange of the exhaust manifold, preventing the flow of hot air inside the heat insulation cotton from causing aging and oil leakage of the cylinder head cover sealing strip, and preventing potential fire risks. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the installation of the thermal insulation cotton bracket of this utility model;

[0011] Figure 2 This is a schematic diagram of the installation of the thermal insulation cotton of this utility model;

[0012] In the diagram: 1. Fourth screw hole; 2. First screw hole; 3. Third screw hole; 4. Cylinder head cover; 5. Heat insulation cotton bracket; 6. Cylinder head; 7. Exhaust manifold; 8. Engine body; 9. Heat insulation cotton. Detailed Implementation

[0013] The following combination Figure 1-2 The present invention will be described in further detail below.

[0014] This utility model discloses a support structure for fixing the heat insulation cotton of an engine exhaust manifold, referring to... Figure 1 and Figure 2 The engine includes an engine body 8, on which a cylinder head 6 and an exhaust manifold 7 are mounted. A heat insulation cotton bracket 5 is fixed between the cylinder head 6 and the exhaust manifold 7. The exhaust manifold 7 is covered with heat insulation cotton 9, which is fixed to the heat insulation cotton bracket 5. The heat insulation cotton bracket 5 is made of multiple V-shaped thin plates spliced ​​together and is in close contact with the V-shaped flange of the cylinder head 6 and the exhaust manifold 7.

[0015] In a further embodiment, a plurality of first screw holes 2 are provided at a wider position above the heat insulation cotton bracket 5, and a second screw hole is provided at a position corresponding to the first screw hole 2 on the cylinder head 6. Bolts are provided in the first screw hole 2 and the second screw hole. A plurality of third screw holes 3 are provided at a narrower position below the heat insulation cotton bracket 5, and the lower end of the heat insulation cotton 9 is fixed to the third screw hole 3 by bolts, and the position of the third screw hole 3 is lower than that of the exhaust manifold 7. The top of the heat insulation cotton bracket 5 is bent toward the cylinder head 6, and a plurality of fourth screw holes 1 are provided at the top of the bent heat insulation cotton bracket 5. The upper end of the heat insulation cotton 9 is fixed to the fourth screw hole 1 by bolts.

[0016] Example

[0017] In this embodiment, the heat insulation cotton bracket 5 is a thin plate with a sheet metal thickness of 1-3mm. Five second screw holes are added to the side of the cylinder head 6 to fix the heat insulation cotton bracket 5. The heat insulation cotton bracket 5 is fixed by using the first and last two second screw holes on the side of the cylinder head 6. Alternatively, the number and position of the second screw holes can be set according to the needs of engine assembly or disassembly. Alternatively, the heat insulation cotton bracket 5 can be cut in half from the middle, and each half can be fixed by using bolts on the side of the cylinder head 6.

[0018] When fixing the heat insulation cotton 9, the heat insulation cotton bracket 5 is bent at the top of the cylinder head 6 to create seven fourth screw holes 1 above the cylinder head 6. The upper end of the heat insulation cotton 9 is fixed by drilling and welding nuts or bolts. The lower end of the heat insulation cotton 9 is fixed by drilling and welding nuts or bolts. Finally, the heat insulation cotton 9 is fixed with a total of eleven screw holes, so that the heat insulation cotton 9 is tightly attached to the cylinder head cover 4 and the engine body 8 without assembly gap, thus achieving the purpose of safe heat insulation protection.

[0019] When in use, first fix the heat insulation cotton bracket 5 between the cylinder head 6 and the exhaust manifold 7, then wrap the heat insulation cotton 9 around the exhaust manifold 7, and fix the upper and lower ends of the heat insulation cotton 9 to the fourth screw hole 1 and the third screw hole 3 respectively. At the same time, the heat insulation cotton bracket 5 is close to the side of the cylinder head 6 and adopts an inverted V-shaped structure design, which is close to the V-shaped flange of the exhaust manifold 7 to prevent the hot air flow inside the heat insulation cotton 9 from causing aging and oil leakage of the sealing strip of the cylinder head cover 4 and the potential risk of fire.

[0020] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A support structure for fixing an exhaust heat insulating cotton to an engine exhaust manifold, characterized by, The application relates to an engine heat insulation device, which comprises an engine body (8), a cylinder cover (6) and an exhaust manifold (7) arranged on the engine body (8), a heat insulation cotton support (5) fixed between the cylinder cover (6) and the exhaust manifold (7), and heat insulation cotton (9) arranged on the exhaust manifold (7) and fixed on the heat insulation cotton support (5).

2. The support structure for fixing the exhaust manifold insulating cotton of an engine according to claim 1, characterized in that, A plurality of first screw holes (2) are arranged at a wider position of the heat insulation cotton support (5), second screw holes are arranged at positions corresponding to the first screw holes (2) on the cylinder cover (6), and bolts are arranged in the first screw holes (2) and the second screw holes.

3. The support structure for fixing the exhaust manifold insulating cotton of an engine according to claim 2, characterized in that, A plurality of third screw holes (3) are arranged at a narrower position below the heat insulation cotton support (5), the lower end of the heat insulation cotton (9) is fixed on the third screw holes (3) through bolts, and the third screw holes (3) are lower than the exhaust manifold (7).

4. The support structure for fixing the exhaust manifold insulating cotton of an engine according to claim 2, characterized in that, The top of the heat insulation cotton support (5) is bent towards the cylinder cover (6), the top of the bent heat insulation cotton support (5) is provided with a plurality of fourth screw holes (1), and the upper end of the heat insulation cotton (9) is fixed on the fourth screw holes (1) through bolts.

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