Noise elimination and heat insulation pad used in engine compartment of engineering vehicle

Abstract

The utility model relates to the technical field of heat insulation pads, and discloses a noise elimination and heat insulation pad used in an engine compartment of an engineering vehicle, which comprises a noise elimination and heat insulation pad main body, the noise elimination and heat insulation pad main body comprises a first waterproof cloth, a first adhesive layer, a base material layer, a second adhesive layer and a second waterproof cloth which are connected in sequence, the first adhesive layer and the second adhesive layer are both phenolic resin glue, and the base material layer is made of glass fibers. Compared with the prior art, the sound-absorbing thermal insulation pad has obvious advantages in the aspect of sound absorption, meanwhile, the first waterproof cloth and the second waterproof cloth are arranged, waterproof fibers are added to the fabric on the surface of the thermal insulation pad, water on the upper surface and the lower surface can be prevented from entering the thermal insulation pad, and the thermal insulation pad has good heat resistance and can be used for a long time in a high-temperature vibration environment.

Description

Technical Field

[0001] The utility model relates to the technical field of heat insulation pads, in particular to a sound-absorbing and heat-insulating pad for the interior of an engineering vehicle engine compartment. Background Art

[0002] Compared with automobiles, the operating environment of engineering vehicles is relatively harsh. Especially during construction, the engine generates noise and high temperature, which are urgent problems for driving construction personnel. The engine compartment heat insulation pad is the key to solving such problems.

[0003] The main functions of the engine compartment heat insulation pad are to reduce engine noise, maintain the temperature of the engine compartment, and prevent the overheating of the engine compartment from affecting the stability of the components inside the compartment. It not only eliminates a large amount of noise in the compartment, reduces the heat dissipation in the compartment, but also can reduce the damage to the paint quality of the engine compartment in the long term.

[0004] The existing heat insulation pads for engineering vehicle engine compartments can play a role in reducing noise, heat preservation and heat insulation in the short term. However, due to the long-term vibration and the intrusion of oil and water in the compartment, the heat insulation pads are prone to aging and structural damage and lose their functions. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problems existing in the prior art, and to provide a sound-absorbing and heat-insulating pad for the interior of an engineering vehicle engine compartment.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A sound-absorbing and heat-insulating pad for the interior of an engineering vehicle engine compartment, comprising a sound-absorbing and heat-insulating pad main body, the sound-absorbing and heat-insulating pad main body includes a first waterproof cloth, a first adhesive layer, a base material layer, a second adhesive layer and a second waterproof cloth which are sequentially connected. Among them, both the first adhesive layer and the second adhesive layer are phenolic resin adhesives, and the production material of the base material layer is glass fiber.

[0008] Preferably, a washer is arranged on the sound-absorbing and heat-insulating pad main body. The washer consists of two parts, a non-slip ring body and a support ring body, which are sequentially connected and fixed. A non-slip tip is arranged on one side of the non-slip ring body, and the non-slip tip is used to puncture into the sound-absorbing and heat-insulating pad main body. The support ring body is used to pass through the sound-absorbing and heat-insulating pad main body. The support ring body is in a T shape. One end of the support ring body is connected to the non-slip ring body, and the other end is located on the other side of the sound-absorbing and heat-insulating pad main body.

[0009] Preferably, the second waterproof cloth is arranged in a plate shape. The outer end of the first waterproof cloth is connected to the outside of the second waterproof cloth and is designed in a duckbill structure.

[0010] Preferably, the duckbill structure includes two adjacent first R-angle parts and second R-angle parts, and the diameter of the first R-angle part is 1.3 cm, and the diameter of the second R-angle part is 1.5 cm.

[0011] Preferably, both the first waterproof cloth and the second waterproof cloth are polyester fiber and polypropylene waterproof fiber blend layers.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] The present utility model has obvious advantages in sound absorption. At the same time, by arranging the first waterproof cloth and the second waterproof cloth, the fabric on the surface of the heat insulation pad is added with waterproof fibers, which can prevent the intrusion of water on the upper and lower surfaces, and also has good heat resistance, and can be used for a long time in a high-temperature vibration environment. Description of the Drawings

[0014] Figure 1 It is the front view of a sound-absorbing and heat-insulating pad for the interior of an engineering vehicle engine compartment proposed by the present utility model;

[0015] Figure 2 It is the side sectional view of a sound-absorbing and heat-insulating pad for the interior of an engineering vehicle engine compartment proposed by the present utility model;

[0016] Figure 2 A is an enlarged schematic view of the end position of the sound-absorbing and heat-insulating pad main body;

[0017] Figure 3 It is the washer schematic view of a sound-absorbing and heat-insulating pad for the interior of an engineering vehicle engine compartment proposed by the present utility model;

[0018] Figure 4 It is the side view schematic view of a sound-absorbing and heat-insulating pad for the interior of an engineering vehicle engine compartment proposed by the present utility model;

[0019] Figure 5 It is the pre-pressing forming composition schematic view of a sound-absorbing and heat-insulating pad for the interior of an engineering vehicle engine compartment proposed by the present utility model;

[0020] Figure 6 It is the sound absorption performance diagram of a sound-absorbing and heat-insulating pad for the interior of an engineering vehicle engine compartment proposed by the present utility model.

[0021] In the figure: 1. First waterproof cloth; 2. First adhesive layer; 3. Base material layer; 4. Second adhesive layer; 5. Second waterproof cloth; 6. Anti-slip ring body; 7. Support ring body; 8. Sound-absorbing and heat-insulating pad main body; 9. Duckbill structure; 10. First R-angle part; 11. Second R-angle part. Detailed Embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0023] Referring to Figures 1-6 , a sound-absorbing and heat-insulating pad for the interior of an engineering vehicle engine compartment, comprising a sound-absorbing and heat-insulating pad main body 8, wherein the sound-absorbing and heat-insulating pad main body 8 includes a first waterproof cloth 1, a first adhesive layer 2, a base material layer 3, a second adhesive layer 4, and a second waterproof cloth 5 that are sequentially connected. Among them, both the first adhesive layer 2 and the second adhesive layer 4 are phenolic resin adhesives, and the production material of the base material layer 3 is glass fiber.

[0024] Through the selection of the above materials and the setting of the structure, this sound-absorbing and heat-insulating pad has obvious advantages in sound absorption. At the same time, by setting the first waterproof cloth 1 and the second waterproof cloth 5, the fabric on the surface of the heat-insulating pad is added with waterproof fibers, which can prevent the intrusion of water on the upper and lower surfaces (there are two existing products: 1. It can only play a waterproof role on the upper and lower surfaces, and the side cannot be waterproof for a long time; 2. Spraying some adhesives on the side to form a film or manually covering a waterproof film, which generates a lot of labor costs, but the film seal is not tight, and there is still a great risk of leakage in the long term, and some are even unhealthy and environmentally unfriendly). At the same time, it also has good heat resistance (the combined action of the waterproof cloth and the base material), and can be used for a long time in a high-temperature vibration environment. Compared with the prior art, this product can meet the requirements of the engineering vehicle engine compartment, can effectively reduce engine noise (the combined action of the waterproof cloth and the base material, the sound absorption performance is as Figure 6 shown. Measured by reverberation sound absorption ASTM C423, ISO 354, in the medium and high frequency range (1000 - 5000Hz) of this product, the sound absorption coefficient is higher than the standard requirement, and the sound absorption effect is more obvious), maintain the temperature of the engine compartment, prevent the engine compartment from overheating and affecting the stability of the components in the compartment, not only eliminate a large amount of noise in the compartment, reduce the heat dissipation in the compartment, but also reduce the damage to the paint quality of the engine compartment in the long term.

[0025] In this embodiment, a washer is provided on the main body 8 of the sound-absorbing and heat-insulating pad. The washer consists of two parts, namely a non-slip ring body 6 and a support ring body 7, which are connected and fixed in sequence. A non-slip tip is provided on one side of the non-slip ring body 6, and the non-slip tip is used to penetrate into the main body 8 of the sound-absorbing and heat-insulating pad. The support ring body 7 is used to pass through the main body 8 of the sound-absorbing and heat-insulating pad. The support ring body 7 is in a T shape. One end of the support ring body 7 is connected to the non-slip ring body 6, and the other end is located on the other side of the main body 8 of the sound-absorbing and heat-insulating pad. When the non-slip ring body 6, the main body 8 of the sound-absorbing and heat-insulating pad, and the support ring body 7 are installed, they are first pre-installed and clamped on a specific mold, and then pressure is applied by a buttoning machine to make the long flanging of the support ring body 7 turn outwards and fold, similar to the rivet fixing form, to complete the fastening of the main body 8 of the sound-absorbing and heat-insulating pad and the washer. This washer design is convenient for preventing the product from being damaged on the material surface by a bolt gun during the installation process and for preventing the product fastening installation points from being easily loosened in a long-term vibration environment.

[0026] In this embodiment, the second waterproof cloth 5 is arranged in a plate shape. The outer end of the first waterproof cloth 1 is connected to the outer side of the second waterproof cloth 5 and is designed in a duckbill structure 9. The connection between the outer end of the first waterproof cloth 1 and the outer side of the second waterproof cloth 5 is formed by cold material hot pressing or hot material cold pressing (that is, from Figure 5 state is formed into Figure 4 state), which has good waterproof effect and reduces the aging problem inside the product. The duckbill structure 9 can concentrate the maximum pressure of the hot pressing mold on the edge of the product, pressing the fabrics and substrates of the upper, middle and lower layers into a very dense state, which not only plays a waterproof role but also prevents the glass fiber substrate from scattering. The overall thickness of the main body 8 of the sound-absorbing and heat-insulating pad is 6 mm, which is convenient for fixing the washer. The edge pressing thickness of the duckbill structure 9 is 1 mm, which is the most ideal state for dense waterproofing.

[0027] In this embodiment, the duckbill structure 9 includes two adjacent and connected first R-angle parts 10 and second R-angle parts 11, and the diameter of the first R-angle part 10 is 1.3 cm, and the diameter of the second R-angle part 11 is 1.5 cm.

[0028] In this embodiment, the first waterproof cloth 1 and the second waterproof cloth 5 are made of a blend of polyester fiber fabric and polypropylene waterproof fiber, and are formed by needling reinforcement and then hot ironing. They not only have the characteristic of high temperature resistance, but also have the functions of sound absorption and waterproofing.

[0029] The above is only a preferred specific embodiment 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 substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A sound-absorbing and heat-insulating pad for the interior of an engineering vehicle engine compartment, characterized in that: It includes a noise and heat insulation pad body, and the noise and heat insulation pad body includes a first waterproof cloth, a first adhesive layer, a base material layer, a second adhesive layer and a second waterproof cloth which are sequentially connected and arranged. Among them, both the first adhesive layer and the second adhesive layer are phenolic resin adhesives, and the production material of the base material layer is glass fiber.

2. The sound-absorbing and heat-insulating pad for the interior of an engineering vehicle engine compartment according to claim 1, characterized in that: A washer is arranged on the noise and heat insulation pad body. The washer consists of two parts, namely a non-slip ring body and a support ring body which are sequentially connected and fixed. A non-slip tip is arranged on one side of the non-slip ring body, and the non-slip tip is used for piercing into the noise and heat insulation pad body. The support ring body is used for passing through the noise and heat insulation pad body. The support ring body is in a T shape. One end of the support ring body is connected to the non-slip ring body, and the other end is located on the other side of the noise and heat insulation pad body.

3. The sound-absorbing and heat-insulating pad for the interior of an engineering vehicle engine compartment according to claim 1, wherein: The second waterproof cloth is arranged in a plate shape. The outer end of the first waterproof cloth is connected to the outside of the second waterproof cloth and is designed in a duckbill structure.

4. The sound-absorbing and heat-insulating pad for the interior of an engineering vehicle engine compartment according to claim 3, characterized in that: The duckbill structure includes two adjacent and connected first R-angle parts and second R-angle parts. The diameter of the first R-angle part is 1.3 cm, and the diameter of the second R-angle part is 1.5 cm.

5. The sound-absorbing and heat-insulating pad for the interior of an engineering vehicle engine compartment according to claim 1, wherein: Both the first waterproof cloth and the second waterproof cloth are polyester fiber and polypropylene waterproof fiber blend layers.

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