Engine cylinder cover with noise reduction structure

Abstract

The utility model discloses an engine cylinder cover with a noise reduction structure, which belongs to the technical field of engine accessories and comprises a cylinder cover body, four groups of circular grooves are formed in the top end of the cylinder cover body, air inlets and air outlets are formed in inner cavities of the four groups of circular grooves, a sealing gasket is fixedly connected to the lower surface of the cylinder cover body, and the air inlets and the air outlets are communicated with the sealing gasket. A connecting mechanism is arranged at the top end of the cylinder cover body, a sound insulation plate used for insulating engine noise is arranged at the bottom end of the cylinder cover body, a sound absorption layer used for absorbing the engine noise is arranged at the bottom end of the sound insulation plate, a sound absorption plate is arranged at the bottom end of the sound absorption layer, and a metal protection plate is fixedly connected to the lower surface of the sound absorption plate. And a water inlet pipe and a water outlet pipe are arranged on the two sides of the cylinder cover table correspondingly, so that the noise reduction effect of the engine cylinder cover is improved, the influence of noise on the surrounding environment is reduced, and the use experience of a user is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of engine accessories, in particular to an engine cylinder cover with a noise reduction structure. BACKGROUND

[0002] An engine is a kind of machine that can convert other forms of energy into mechanical energy, and an engine is a kind of machine that can convert other forms of energy into mechanical energy, and an engine cylinder cover is one of engine accessories.

[0003] The existing engine cylinder cover is usually assembled with the engine through a plurality of fasteners, and the engine cylinder cover only protects the parts inside the engine, cannot play a sound insulation role, and thus the noise generated when the engine works is transmitted to the outside through the cylinder cover, which is too large to easily affect the surrounding environment and reduce the user's experience.

[0004] According to the engine cylinder cover with announcement number: CN213627799U, the cylinder cover body is provided with a cross-shaped reinforcing rib at the bottom of the concave cavity structure, and the reinforcing rib is extended from the bottom to the side wall. The reinforcing rib is provided at the bottom of the concave cavity structure of the cylinder cover body, and the reinforcing rib is provided on the side wall, so that the structural strength of the cylinder cover body is enhanced; since the reinforcing rib is a sheet-shaped protruding structure, the reinforcing rib also blocks the airflow in the cylinder cover, thereby reducing the noise of the cylinder cover.

[0005] According to the above-mentioned engine cylinder cover, only the reinforcing rib is used to block the noise, and the noise is still transmitted to the outside of the engine cylinder cover through the reinforcing rib, so that the noise reduction effect of the engine cylinder cover is poor, which easily affects the surrounding environment and reduces the user's experience, so we need to propose an engine cylinder cover with a noise reduction structure. INVENTION CONTENTS

[0006] The utility model aims at providing an engine cylinder cover with a noise reduction structure, which increases the sealing property of the engine cylinder cover after assembly with the engine by the setting of the sealing gasket, avoids the transmission of noise from the gap, protects the sound-absorbing plate by the metal protective plate, preliminarily reduces the noise by the metal protective plate, then absorbs the noise by the sound-absorbing plate, reduces the volume of the noise, then reduces the noise again by the sound-absorbing layer, and finally isolates the noise reduced multiple times to the inside of the cylinder cover by the sound insulation plate at the top, so as to improve the noise reduction effect of the engine cylinder cover, reduce the influence of the noise on the surrounding environment, and improve the user's experience, so as to solve the problems in the above background technology.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: A engine cylinder cover with noise reduction structure, including cylinder cover body, the top of cylinder cover body is equipped with round groove, four groups of round groove are equipped with, the inner chamber of four groups of round groove all is equipped with air inlet and exhaust port, the lower surface of cylinder cover body is fixedly connected with the sealing gasket for avoiding that the engine noise runs out from the gap, the top of cylinder cover body is equipped with the connecting mechanism that the staff is convenient to cylinder cover and takes, the bottom of cylinder cover body is equipped with the sound insulation board for insulating engine noise, the bottom of sound insulation board is equipped with the sound absorption layer for sucking engine noise, the bottom of sound absorption layer is equipped with sound absorption board, the lower surface of sound absorption board is fixedly connected with metal protection plate, the both sides of cylinder cover body are equipped with water inlet pipe and drain pipe respectively.

[0008] Preferably, the connecting mechanism includes a connecting seat, a notch is formed in the top end of the connecting seat, a handle is rotatably connected to the inner cavity of the connecting seat notch through a rotating shaft, a clamping groove is formed in the upper surface of the cylinder cover body, the connecting seat is clamped in the inner cavity of the clamping groove, and a fixing structure for fixing the connecting seat is arranged in the inner cavity of the clamping groove.

[0009] Preferably, the fixing structure includes a positioning seat, the positioning seat is slidably connected to the inner cavity of the clamping groove, one end of the positioning seat is fixedly connected to an extension rod, the other end of the extension rod is fixedly connected to the inner side wall of the clamping groove, a spring is sleeved on the outer surface of the extension rod, and the positioning seat is provided with two groups.

[0010] Preferably, the two ends of the positioning seat are fixedly connected to support blocks, a notch is formed in the inner side wall of the clamping groove, and the support blocks are slidably connected to the inner cavity of the clamping groove notch.

[0011] Preferably, an anti-skid pad is attached to the upper surface of the positioning seat, an anti-skid vertical line is arranged on the upper surface of the anti-skid pad, and the anti-skid vertical line is provided with a plurality of groups.

[0012] Preferably, a sound absorption hole is formed in the surface of the sound absorption board, a plurality of groups of sound absorption holes are arranged, and the plurality of groups of sound absorption holes are arranged in a honeycomb shape.

[0013] Preferably, the sound absorption layer includes sound absorption cotton, the sound absorption cotton is provided with two groups, the two groups of sound absorption cotton are directly provided with sound absorption blocks, the sound absorption blocks are arranged in a conical shape, and the sound absorption blocks are provided with a plurality of groups.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1. The engine cylinder cover with the noise reduction structure avoids noise transmission from the gap, protects the sound absorption plate through the metal protective plate, preliminarily reduces noise through the metal protective plate, then absorbs noise through the sound absorption plate, reduces the volume of noise, then reduces noise again through the sound absorption layer, and finally isolates the noise reduced for multiple times to the inside of the cylinder cover through the sound insulation plate at the top, thereby improving the noise reduction effect of the engine cylinder cover, reducing the influence of noise on the surrounding environment, and improving the use experience of the user.

[0016] 2. The engine cylinder cover with the noise reduction structure is convenient for maintenance personnel to grab the engine cylinder cover when the engine cylinder cover is maintained and replaced, is convenient for disassembling the engine cylinder cover, and provides convenience for the maintenance personnel to maintain the engine.

[0017] Other features and advantages of the present application will be set forth in the following description of the application, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the application. The objects and other advantages of the present application can be realized and attained by the structure particularly pointed out in the written description and claims hereof. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic view of the overall structure of the present application;

[0019] Figure 2 It is a schematic view of the structure of the present application from the top;

[0020] Figure 3 It is a schematic view of the structure of the present application from the top;

[0021] Figure 4 It is a schematic view of the structure of the sound absorption layer of the present application;

[0022] Figure 5 It is a schematic view of the structure of the sound absorption plate of the present application.

[0023] In the drawing: 1, cylinder cover body; 2, round groove; 3, air inlet; 4, exhaust port; 5, sealing gasket; 6, connecting mechanism; 61, connecting seat; 62, handle; 63, clamping groove; 64, positioning seat; 65, telescopic rod; 66, spring; 7, sound insulation plate; 8, sound absorption layer; 81, sound absorption cotton; 82, sound absorption block; 9, sound absorption plate; 10, metal protective plate; 11, water inlet pipe; 12, drain pipe; 13, supporting block; 14, non-slip pad; 15, sound absorption hole. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0025] Please refer to Figures 1-5 The utility model provides a kind of technical scheme: a kind of engine cylinder cover with noise reduction structure, including cylinder cover body 1, the top of cylinder cover body 1 is equipped with round groove 2, four groups are provided with round groove 2, the inner cavity of four groups of round groove 2 is equipped with air inlet 3 and exhaust port 4, the lower surface of cylinder cover body 1 is fixedly connected with the sealing gasket 5 for avoiding that engine noise runs out from gap, the top of cylinder cover body 1 is provided with the connecting mechanism 6 for facilitating staff to take cylinder cover, the bottom of cylinder cover body 1 is provided with sound insulation board 7 for insulating engine noise, the bottom of sound insulation board 7 is provided with sound-absorbing layer 8 for absorbing engine noise, the bottom of sound-absorbing layer 8 is provided with sound-absorbing board 9, the lower surface of sound-absorbing board 9 is fixedly connected with metal protection plate 10, the two sides of cylinder cover body 1 are provided with water inlet pipe 11 and drain pipe 12 respectively;

[0026] When engine works, by the setting of sealing gasket 5, the sealing property of engine cylinder cover and engine after assembly is increased, noise is avoided from gap transmission, metal protection plate 10 is used to protect sound-absorbing board 9, metal protection plate 10 is used to preliminarily reduce noise, then sound-absorbing board 9 is used to absorb noise, reduce the volume of noise, then sound-absorbing layer 8 is used to reduce noise again, finally the noise after multiple reduction is isolated to the inside of cylinder cover by the top sound insulation board 7, so that the noise reduction effect of engine cylinder cover is improved, the influence of noise on surrounding environment is reduced, and the use experience of user is improved.

[0027] Connecting mechanism 6 includes connecting seat 61, the top of connecting seat 61 is equipped with slot, the inner cavity of connecting seat 61 slot is rotatably connected with handle 62 by pivot, the upper surface of cylinder cover body 1 is equipped with clamping groove 63, connecting seat 61 is clamped in the cavity of clamping groove 63, the inner cavity of clamping groove 63 is provided with fixed structure for fixing connecting seat 61, by the setting of handle 62, when disassembling, the angle of handle 62 is adjusted, handle 62 is moved out of the inner cavity of connecting slot, staff can lift engine cylinder cover by grabbing handle 62, by the cooperation of clamping groove 63 and connecting seat 61, connecting seat 61 and engine cylinder cover are conveniently disassembled, and maintenance and replacement are facilitated.

[0028] The fixing structure comprises a positioning seat 64 which is in sliding connection with the inner cavity of the clamping groove 63, one end of the positioning seat 64 is fixedly connected with an extension rod 65, the other end of the extension rod 65 is fixedly connected with the inner side wall of the clamping groove 63, the outer surface of the extension rod 65 is sleeved with a spring 66, the positioning seat 64 is provided with two groups, when assembling, the positioning seat 64 is pushed to extrude the spring 66, the connecting seat 61 is placed in the clamping groove 63, then the positioning seat 64 is released, the spring 66 rebounds to push the positioning seat 64 to move towards the connecting seat 61, so that the positioning seat 64 moves above the connecting seat 61, and the position of the connecting seat 61 in the clamping groove 63 is fixed.

[0029] Both ends of the positioning seat 64 are fixedly connected with support blocks 13, the inner side wall of the clamping groove 63 is provided with a slot, the support blocks 13 are in sliding connection with the inner cavity of the slot of the clamping groove 63, through the arrangement of the support blocks 13, the movement of the positioning seat 64 in the clamping groove 63 is assisted, the gravity borne by the clamping groove 63 is supported, and the stability after the connecting seat 61 is fixed is improved.

[0030] The upper surface of the positioning seat 64 is bonded with a non-slip pad 14, the upper surface of the non-slip pad 14 is provided with non-slip vertical lines, the non-slip vertical lines are provided with a plurality of groups, through the arrangement of the non-slip pad 14, the friction with the hands of the workers is increased, and through the arrangement of the non-slip vertical lines, the non-slip effect of the non-slip pad 14 is improved.

[0031] The surface of the sound absorption plate 9 is provided with sound absorption holes 15, the sound absorption holes 15 are provided with a plurality of groups, the plurality of groups of sound absorption holes 15 are arranged in a honeycomb shape, through the arrangement of the sound absorption holes 15, the noise can be absorbed to reduce the volume of the noise, and through the arrangement of the sound absorption holes 15, the noise absorption effect is improved.

[0032] The sound absorption layer 8 comprises sound absorption cotton 81, the sound absorption cotton 81 is provided with two groups, the two groups of sound absorption cotton 81 are directly provided with sound absorption blocks 82, the sound absorption blocks 82 are arranged in a conical shape, the sound absorption blocks 82 are provided with a plurality of groups, through the sound absorption cotton 81 at the bottom end, the noise is absorbed, then through the cooperation of the sound absorption blocks 82, the noise is absorbed, and the sound absorption cotton 81 at the top end absorbs the noise again.

[0033] Specific use: when the engine is working, the sealing gasket 5 is arranged to increase the sealing performance of the engine cylinder cover after the engine is assembled, to avoid noise transmission from the gap, the sound-absorbing plate 9 is protected by the metal protection plate 10, the metal protection plate 10 preliminarily reduces noise, then the sound-absorbing plate 9 absorbs noise to reduce the volume of noise, the sound-absorbing plate 9 increases the noise absorption effect of the sound-absorbing plate 9 through the sound-absorbing holes 15, then the noise is transmitted to the bottom sound-absorbing cotton 81 to absorb noise, then the sound-absorbing block 82 cooperates to absorb noise, the top sound-absorbing cotton 81 absorbs noise again, then the noise after multiple noise reduction is isolated by the sound insulation plate 7 arranged at the top to isolate the noise in the engine cylinder cover, thereby improving the noise reduction effect of the engine cylinder cover, reducing the influence of noise on the surrounding environment, and improving the user experience.

[0034] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An engine cylinder head having a noise reduction structure, comprising a cylinder head body (1), characterized by: The top end of the cylinder cover body (1) is provided with a circular groove (2), the circular groove (2) is provided with four groups, the inner cavity of the four groups of circular grooves (2) is provided with an air inlet (3) and an exhaust port (4), the lower surface of the cylinder cover body (1) is fixedly connected with a sealing gasket (5) for avoiding engine noise from running out of the gap, the top end of the cylinder cover body (1) is provided with a connecting mechanism (6) for facilitating workers to take the cylinder cover, the bottom end of the cylinder cover body (1) is provided with a sound insulation board (7) for isolating engine noise, the bottom end of the sound insulation board (7) is provided with a sound absorbing layer (8) for absorbing engine noise, the bottom end of the sound absorbing layer (8) is provided with a sound absorbing plate (9), the lower surface of the sound absorbing plate (9) is fixedly connected with a metal protective plate (10), the two sides of the cylinder cover body (1) are respectively provided with a water inlet pipe (11) and a drain pipe (12).

2. The engine cylinder head with noise reduction structure according to claim 1, characterized in that: The connecting mechanism (6) comprises a connecting seat (61), the top end of the connecting seat (61) is provided with a notch, the inner cavity of the connecting seat (61) notch is rotationally connected with a handle (62) through a rotating shaft, the upper surface of the cylinder cover body (1) is provided with a clamping groove (63), the inner cavity of the connecting seat (61) and the clamping groove (63) are matched and clamped, and the inner cavity of the clamping groove (63) is provided with a fixing structure for fixing the connecting seat (61).

3. The engine cylinder head with noise reduction structure according to claim 2, characterized in that: The fixing structure comprises a positioning seat (64), the positioning seat (64) is slidably connected with the inner cavity of the clamping groove (63), one end of the positioning seat (64) is fixedly connected with a telescopic rod (65), the other end of the telescopic rod (65) is fixedly connected with the inner side wall of the clamping groove (63), the outer surface of the telescopic rod (65) is sleeved with a spring (66), and the positioning seat (64) is provided with two groups.

4. The engine cylinder head with noise reduction structure according to claim 3, characterized in that: Both ends of the positioning seat (64) are fixedly connected with a supporting block (13), the inner side wall of the clamping groove (63) is provided with a notch, and the supporting block (13) is slidably connected with the inner cavity of the clamping groove (63) notch.

5. The engine cylinder head with noise reduction structure according to claim 3, characterized in that: The upper surface of the positioning seat (64) is bonded with a non-slip pad (14), the upper surface of the non-slip pad (14) is provided with anti-skid vertical lines, and the anti-skid vertical lines are provided with several groups.

6. The engine cylinder head with noise reduction structure according to claim 1, characterized in that: The surface of the sound absorbing plate (9) is provided with sound absorbing holes (15), the sound absorbing holes (15) are provided with several groups, and the several groups of sound absorbing holes (15) are arranged in a honeycomb shape.

7. The engine cylinder head with noise reduction structure according to claim 1, characterized in that: The sound absorbing layer (8) comprises sound absorbing cotton (81), the sound absorbing cotton (81) is provided with two groups, the two groups of sound absorbing cotton (81) are directly provided with sound absorbing blocks (82), the sound absorbing blocks (82) are conical, and the sound absorbing blocks (82) are provided with several groups.

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