An excavator engine cover assembly

Abstract

The utility model discloses an excavator engine hood assembly relates to excavator engine hood technical field, in order to solve the problem that the swing of current limiting structure cannot effectively limit excavator engine hood assembly in the operation process due to vibration, this excavator engine hood assembly includes engine hood, skeleton, limiting component, limiting component is used for connecting engine hood and skeleton, and limiting component includes limiting block and elastic fixed block, and elastic fixed block is equipped with the clamping slot, and limiting block is set in the clamping slot and can be inserted, so setting, realize accurate limiting of engine hood, avoid the swing of engine hood in the operation process, significantly improve the overall stability of engine hood, reduce the risk of structural damage due to vibration, thereby improve the stability, reliability and durability of engine hood.

Description

Technical Field

[0001] This utility model relates to the field of excavator engine cover technology, and more specifically, to an excavator engine cover assembly. Background Technology

[0002] In the design of modern excavators, the engine hood, as a crucial structure protecting the engine and related components, directly impacts the ease of maintenance and operational stability of the equipment. Traditional excavator engine hood assemblies are typically fixed by a pair of hinges. This design allows the hood to be opened freely, facilitating maintenance and repair of internal components. However, vibration is unavoidable during actual operation, especially under complex working conditions where it becomes more severe. This vibration can cause the non-mounted side of the engine hood to sway left and right or up and down, generating significant noise that interferes with operator work. It also significantly impacts the overall structural stability of the engine hood and the lifespan of the hinges, potentially leading to cracking and compromising the hood's sealing and protective performance.

[0003] Currently, most excavator engine hood assemblies rely on latching springs for limiting the non-mounting side. While this method theoretically restricts engine hood movement, it presents several problems in practice. During assembly, the spring tension is often difficult to control precisely, resulting in unstable tension that can be either too loose or too tight. If too loose, the engine hood's swing cannot be effectively limited; if too tight, it can cause additional stress on the engine hood and hinge structure, accelerating component damage. This design, relying on latching springs for limiting movement, fails to fundamentally solve the engine hood's stability problem during operation.

[0004] Therefore, how to solve the problem that the existing limiting structure cannot effectively limit the swaying of the excavator engine hood assembly caused by vibration during operation is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide an excavator engine hood assembly that achieves precise positioning of the engine hood, avoids swaying of the engine hood during operation, significantly improves the overall stability of the engine hood, reduces the risk of structural damage caused by vibration, and thus improves the stability, reliability and durability of the engine hood.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An excavator engine hood assembly includes an engine hood, a frame, and a limiting component. The limiting component is used to connect the engine hood and the frame. The limiting component includes a limiting block and an elastic fixing block. The elastic fixing block is provided with a slot, and the limiting block is detachably disposed in the slot.

[0008] In some embodiments, a locking assembly is also included, which includes a locking member and a locking tongue. The locking member is disposed on the frame, and the locking tongue is rotatably disposed on the engine hood. By rotating the locking tongue, the locking tongue can be locked or unlocked with the locking member.

[0009] In some embodiments, the latch is connected to the engine hood via an adjusting screw and a connecting assembly. The latch is adjustablely located on the adjusting screw and locked by a locking nut.

[0010] In some embodiments, a rubber retaining block is also included, which is mounted on the engine hood via an adjustable screw and a mounting bracket to limit the distance between the engine hood and the frame.

[0011] In some embodiments, a rubber sheet is attached to the end face of the engine hood opposite to the frame.

[0012] In some embodiments, at least two sets of limiting components are provided, and the at least two sets of limiting components are arranged along the extension direction of the skeleton.

[0013] In some embodiments, the limiting block includes a connecting part and a limiting part, the connecting part is provided with an adjusting elongated hole, and the connecting part is connected to the frame through the adjusting elongated hole and bolts.

[0014] In some embodiments, the contact surface between the limiting portion and the elastic fixing block is configured as an inclined surface.

[0015] In some embodiments, the elastic fixing block has a U-shaped structure and is adjustablely mounted on the engine hood via a mounting plate and a clamping plate.

[0016] In some embodiments, the elastic fixing block is a nylon block.

[0017] This utility model provides an excavator engine hood assembly including an engine hood, a frame, and a limiting component. The limiting component connects the engine hood and the frame, effectively limiting the hood's swaying during operation and reducing collisions and friction between the hood and frame caused by vibration, thereby improving the engine hood's stability. The limiting component includes a limiting block and an elastic fixing block. The elastic characteristics of the elastic fixing block effectively absorb vibration energy, reducing the vibration amplitude of the engine hood during operation, thus reducing noise and protecting the overall structure of the engine hood. The elastic fixing block can adapt to the slight displacement of the engine hood under different working conditions, avoiding component damage caused by rigid limiting, and improving the reliability and durability of the engine hood assembly. The elastic fixing block has a slot, and the limiting block is pluggable into the slot to achieve precise limiting of the engine hood, preventing the engine hood from swaying during operation, significantly improving the overall stability of the engine hood, and reducing the risk of structural damage caused by vibration.

[0018] The excavator engine hood assembly designed in the above manner, through the cooperation of elastic fixing blocks and limiting blocks, significantly improves the stability, reliability, and durability of the engine hood. At the same time, its pluggable design and the characteristics of the elastic fixing blocks not only simplify the assembly process but also facilitate maintenance and replacement, reducing equipment maintenance costs and improving overall performance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a structural schematic diagram of the excavator engine hood assembly provided by this utility model;

[0021] Figure 2 This is a partial structural schematic diagram of the excavator engine hood assembly provided by this utility model;

[0022] Figure 3 This is a partially enlarged schematic diagram of the excavator engine hood assembly provided by this utility model.

[0023] Figure label:

[0024] 1- Engine hood;

[0025] 2-Skeleton;

[0026] 3-Limit component, 31-Limit block, 32-Elastic fixing block, 321-Slot, 33-Mounting plate, 34-Clamping plate;

[0027] 4-Locking assembly, 41-Locking part, 42-Locking tongue, 43-Adjusting screw, 44-Locking nut;

[0028] 5-Limit bolts;

[0029] 6-Mounting bracket;

[0030] 7-Rubber sheet;

[0031] 8-Hinge. Detailed Implementation

[0032] 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.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] It should be noted that the directional terms such as "up," "down," "left," and "right" used below are defined based on the accompanying diagrams in the instruction manual.

[0035] The core of this utility model is to provide an excavator engine hood assembly that achieves precise positioning of the engine hood 1, prevents the engine hood 1 from swinging during operation, significantly improves the overall stability of the engine hood 1, reduces the risk of structural damage caused by vibration, and thus improves the stability, reliability and durability of the engine hood 1.

[0036] It should be noted that the mounting side of the engine hood 1 is connected to the frame 2 via a hinge 8, which allows the non-mounting side of the engine hood 1, which is opposite to the mounting side, to rotate around the hinge 8 in a direction closer to or further away from the frame 2, thereby enabling the engine hood 1 to open and close.

[0037] Please refer to Figure 1 An excavator engine hood assembly includes an engine hood 1, a frame 2, and a limiting component 3.

[0038] Specifically, the limiting component 3 is used to connect the engine hood 1 and the frame 2, effectively limiting the swaying of the engine hood 1 during operation, reducing collisions and friction between the engine hood 1 and the frame 2 caused by vibration, thereby improving the stability of the engine hood 1. The limiting component 3 includes a limiting block 31 and an elastic fixing block 32. The elastic properties of the elastic fixing block 32 can effectively absorb vibration energy, reduce the vibration amplitude of the engine hood 1 during operation, thereby reducing noise and protecting the overall structure of the engine hood 1. The elastic fixing block 32 can adapt to the slight displacement of the engine hood 1 under different working conditions, avoiding component damage caused by rigid limiting, and improving the reliability and durability of the engine hood 1 assembly. The elastic fixing block 32 is provided with a slot 321, and the limiting block 31 is pluggable into the slot 321 to achieve precise limiting of the engine hood 1, preventing the engine hood 1 from swaying during operation, significantly improving the overall stability of the engine hood 1, and reducing the risk of structural damage caused by vibration.

[0039] It should be noted that the limiting block 31 is fixed to the frame 2, while the elastic fixing block 32 is installed on the non-installation side of the engine hood 1. When the engine hood 1 is rotated, the limiting block 31 can be precisely inserted into the slot 321 of the elastic fixing block 32, achieving a stable connection between the two, thereby completing the closing operation of the engine hood 1. If it is necessary to open the engine hood 1, simply apply an appropriate external force to the engine hood 1 to allow the limiting block 31 to smoothly exit from the slot 321 of the elastic fixing block 32, thus enabling the engine hood 1 to open.

[0040] In the above embodiment, the elastic fixing block 32 is a nylon block. Nylon material has good elasticity and shock absorption properties, which can effectively absorb the vibration energy generated by the engine hood 1 during operation and reduce noise caused by vibration. This design significantly improves the operating environment, reduces the noise exposure level of operators, and reduces the impact of vibration on the engine hood 1 and related components, thus extending the service life of the equipment. Nylon material has high wear resistance and fatigue resistance, and can maintain stable performance during long-term use. Even under frequent opening and closing operations and complex working conditions, the nylon block can still maintain good limiting and support functions, reducing the risk of component damage due to material wear and extending the service life of the elastic fixing block 32.

[0041] The excavator engine hood assembly configured in the above manner, through the cooperation of the elastic fixing block 32 and the limiting block 31, significantly improves the stability, reliability, and durability of the engine hood 1. At the same time, its pluggable design and the characteristics of the elastic fixing block 32 not only simplify the assembly process but also facilitate maintenance and replacement, reducing equipment maintenance costs and improving overall performance.

[0042] In the above embodiments, a locking assembly 4 is also included. The locking assembly 4 includes a locking member 41 and a locking tongue 42. The locking member 41 is disposed on the frame 2, and the locking tongue 42 is rotatably disposed on the engine hood 1. By rotating the locking tongue 42, the locking tongue 42 can be locked or unlocked with the locking member 41.

[0043] It should be noted that the introduction of locking assembly 4 further enhances the stability and reliability of the engine hood 1 in the closed state. Through the locking of the locking tongue 42 and the locking element 41, the engine hood 1 can be effectively prevented from accidentally loosening or opening during operation due to vibration or external forces, ensuring the stability of the engine hood 1 under complex working conditions. The design of the locking element 41 and the locking tongue 42 makes locking and unlocking operations simple and convenient. The engine hood 1 can be locked or unlocked simply by rotating the locking tongue 42, without the need for complex tools or cumbersome operating procedures, improving operational efficiency and saving maintenance and repair time. The locking function of locking assembly 4 provides additional safety for the engine hood 1. During excavator operation, especially under bumpy or vibrating conditions, locking assembly 4 ensures that the engine hood 1 remains tightly closed, preventing safety hazards caused by accidental opening of the engine hood 1 and protecting the safety of operators and equipment.

[0044] In the above situation, the locking tongue 42 is connected to the engine cover 1 via the adjusting screw 43 and the connecting assembly. The locking tongue 42 is adjustablely located on the adjusting screw 43 and is locked by the locking nut 44.

[0045] Understandably, the locking tongue 42 is connected to the engine hood 1 via the adjusting screw 43 and the connecting assembly. This design allows the locking tongue 42 to be adjusted in position on the adjusting screw 43, thereby achieving precise positioning and fitting, reducing problems such as loose locking or difficulty in unlocking due to assembly errors. This adjustability makes the assembly process more flexible, improves the consistency of assembly quality, and ensures that each engine hood 1 assembly achieves the best locking effect. The locking tongue 42 is locked by the locking nut 44. This fastening method ensures that the locking tongue 42 remains stable in the adjusted position, preventing the locking tongue 42 from loosening or shifting due to vibration or external force. The use of the locking nut 44 enhances the fixing reliability of the locking tongue 42, extends the service life of the locking assembly 4, and reduces the risk of failure due to loose parts. The design of the adjusting screw 43 and the locking nut 44 makes the installation and adjustment process of the locking tongue 42 more flexible. During installation or maintenance, operators can easily adjust the position of the locking tongue 42 according to actual needs and quickly fix it by tightening the locking nut 44. No complicated tools or professional skills are required, which improves maintenance efficiency and reduces maintenance costs.

[0046] The locking tongue 42 can be adjusted up and down along the direction of approaching and moving away from the engine hood 1. This design provides high flexibility, allowing for fine-tuning based on the actual gap between the engine hood 1 and the frame 2. This adjustment capability ensures that the locking tongue 42 can precisely engage with the locking element 41, guaranteeing reliable locking performance even in the event of minor deformation due to assembly errors or equipment aging. The locking tongue 42 can abut against the locking element 41 on the frame 2, thereby achieving a secure lock on the engine hood 1. This design ensures that the engine hood 1 will not accidentally loosen or open due to vibration or external forces during excavator operation, significantly improving the reliability and safety of the equipment under complex working conditions.

[0047] Furthermore, the locking element 41 adopts a straight Z-shaped bracket design, which is simple in structure and easy to manufacture and install. This design not only reduces production costs but also improves assembly efficiency. At the same time, the Z-shaped structure provides sufficient strength and stability to ensure good locking performance during long-term use. The tight fit between the locking tongue 42 and the locking element 41 ensures that the engine hood 1 remains closed during operation, preventing mechanical failure or safety accidents caused by accidental opening of the engine hood 1. This design provides additional safety for operators and equipment, especially in working conditions with high vibration or complex working environments.

[0048] In one embodiment, the limiting bolt 5 can be a rubber limiting lug with an adjustable screw 43. The screw is connected to the engine cover 1 through the mounting bracket 6, and the position of the engine cover 1 when it falls can be limited by the degree to which the screw is screwed in.

[0049] It should be noted that by replacing the traditional rigid limiting bolts 5 with rubber retaining blocks, the flexible properties of the rubber material provide cushioning when the engine hood 1 falls, reducing the impact force and noise caused by rigid collisions. This design not only protects the structural integrity of the engine hood 1 and the frame 2, but also significantly reduces the noise level during operation, improving the operating environment. The flexible support of the rubber retaining blocks, while limiting the falling position of the engine hood 1, can absorb some vibration energy, reducing the swaying amplitude of the engine hood 1 during operation. This design further enhances the structural stability of the engine hood 1, reduces the risk of structural damage caused by vibration, and extends the service life of the engine hood 1 and related components. Moreover, the flexible design of the rubber retaining blocks allows it to adapt to complex working conditions. In bumpy or vibrating working environments, the cushioning effect of the rubber material can effectively reduce the direct impact between the engine hood 1 and the frame 2, ensuring stable operation of the equipment under harsh conditions.

[0050] The rubber retaining block has a built-in screw, and the degree to which the screw is screwed in can be precisely adjusted to determine the position of the engine cover 1 when it falls. This adjustability allows the retaining block to adapt to different models of engine covers 1 and frames 2, as well as dimensional deviations that may occur during assembly, ensuring optimal fit between the engine cover 1 and the frame 2 and improving the system's versatility and adaptability. The rubber retaining block is connected to the mounting bracket 6 via its built-in screw, making installation and removal simple and quick. This design not only simplifies the assembly process, reduces assembly time and costs, but also facilitates quick replacement of the retaining block during maintenance, improving the maintainability of the equipment.

[0051] Furthermore, the rubber limiting block works in conjunction with other limiting components 3 in the engine hood 1 assembly (such as the elastic fixing block 32, locking component 4, etc.) to further optimize the stability, shock absorption performance, and maintenance convenience of the engine hood 1. This design not only improves the overall performance of the engine hood 1 assembly but also provides strong support for the efficient operation of the excavator, while reducing equipment maintenance costs and downtime.

[0052] It should be noted that the rubber retaining lug provides the force to keep the locking tongue 42 pressed tightly against the locking member 41, further enhancing the connection stability between the engine hood 1 and the frame 2. This design ensures that during excavator operation, even under vibration or external force, the engine hood 1 remains tightly closed, preventing accidental opening of the engine hood 1 due to loosening or incomplete sealing of the locking tongue 42, significantly improving the safety and reliability of equipment operation. The flexible nature of the rubber retaining lug provides cushioning between the locking tongue 42 and the locking member 41, absorbing some vibration energy and further enhancing the shock absorption performance of the engine hood 1. This design helps reduce noise and component fatigue caused by vibration, improving the overall operational stability of the equipment. This cushioning effect not only protects the structural integrity of the locking tongue 42 and the locking member 41 but also reduces the risk of component fatigue damage due to long-term vibration, extending the service life of the locking assembly 4.

[0053] In the above embodiment, a rubber sheet 7 is attached to the end face of the engine hood 1 opposite to the frame 2.

[0054] Understandably, the rubber sheet 7 attached to the opposite end face of the engine hood 1 and frame 2 has a certain amount of compression, which can effectively absorb vibration energy when the engine hood 1 is closed, reducing noise caused by vibration. This design significantly improves the operating environment, reduces the noise exposure level of operators, and reduces the impact of vibration on the engine hood 1 and related components, extending the service life of the equipment. The presence of the rubber sheet 7 avoids direct contact between the engine hood 1 and other sheet metal parts. This cushioning effect reduces structural damage caused by rigid collisions between metal parts, protects the surfaces of the engine hood 1 and frame 2, prevents scratches and wear, and improves the overall durability of the equipment. When the rubber sheet 7 is compressed, the friction between it and the frame 2 can effectively prevent the engine hood 1 from swinging. This design further enhances the stability of the engine hood 1, especially during excavator operation, reducing the swing amplitude of the engine hood 1 caused by vibration or external forces, ensuring the stable operation of the engine hood 1 under complex working conditions.

[0055] Through the synergistic action of the limiting component 3, locking component 4, rubber limiting lug, and rubber sheet 7, the engine hood 1 achieves high stability and reliability in the closed state. The limiting component 3 ensures effective connection between the engine hood 1 and the frame 2, while also providing vibration damping and noise reduction. The locking component 4 ensures a secure lock on the engine hood 1, the rubber limiting lug limits the distance between the engine hood 1 and the frame 2, and the rubber sheet 7 provides vibration damping, noise reduction, and anti-sway functions. This multi-layered limiting and buffering design significantly improves the overall performance of the engine hood 1 assembly, reducing structural damage and functional failures caused by vibration or external forces. It not only enhances the stability, reliability, and safety of the engine hood 1 but also improves the operating environment by reducing vibration and noise, thereby increasing the overall operating efficiency and service life of the equipment.

[0056] It should be noted that the hardness of the rubber retaining block is greater than that of the rubber sheet 7, enabling it to provide more stable support when subjected to the impact and continuous pressure of the engine hood 1 falling. This design ensures that the engine hood 1 maintains a precise position when closed, reducing swaying caused by vibration or external forces and significantly enhancing the stability of the engine hood 1. Although the rubber retaining block has a high hardness, it still possesses a certain degree of elasticity, absorbing some impact energy when the engine hood 1 falls, thus acting as a buffer. This design, in conjunction with the shock-absorbing function of the rubber sheet 7, further optimizes the shock absorption performance of the engine hood 1 assembly, reducing the impact of noise and vibration on the operating environment.

[0057] Based on the above embodiments, at least two sets of limiting components 3 are provided, with at least two sets of limiting components 3 arranged along the extension direction of the frame 2, capable of limiting the engine hood 1 from multiple positions. This design significantly enhances the overall stability of the engine hood 1 in the closed state, effectively preventing the engine hood 1 from swaying or shifting due to vibration or external forces during operation, ensuring that the engine hood 1 and the frame 2 always maintain a tight fit. The multiple sets of limiting components 3 arranged along the extension direction of the frame 2 make the force on the engine hood 1 more uniform when closed, reducing local stress concentration, lowering the risk of structural damage due to excessive force at a single point, and extending the service life of the engine hood 1 and related components. By providing multiple sets of limiting components 3, even if one set of limiting components 3 fails due to wear or malfunction, the other limiting components 3 can still continue to function, ensuring the stability of the engine hood 1. This redundant design significantly improves the reliability of the engine hood 1 assembly and reduces equipment downtime caused by the failure of the limiting components 3.

[0058] In complex operating environments, such as bumpy or vibrating conditions, multiple sets of limiting components 3 can more effectively limit the swaying of the engine hood 1, ensuring that the engine hood 1 remains stably closed under various operating conditions. This design improves the adaptability and stability of the equipment in harsh environments and reduces equipment failures caused by changes in operating conditions.

[0059] In the above embodiment, the limiting block 31 includes a connecting part and a limiting part. The connecting part is provided with an adjustment elongated hole, and the connecting part is connected to the frame 2 through the adjustment elongated hole and bolts.

[0060] Understandably, the connecting part of the limiting block 31 is provided with an adjusting elongated hole, which is connected to the frame 2 by bolts. This design allows for fine adjustment of the left and right position (along the extension direction of the frame 2) of the limiting block 31 during installation. This adjustability ensures that the limiting block 31 can accurately cooperate with the elastic fixing block 32 or other limiting structures on the engine hood 1, achieving optimal limiting effect even under minor deformation caused by assembly errors or equipment aging, thus improving the system's adaptability and reliability. The limiting block 31 adopts a wedge-shaped protrusion design. This structure forms a stable wedge-shaped limit when the engine hood 1 is closed, effectively preventing the engine hood 1 from swinging or shifting. The wedge-shaped protrusion limiting block 31 is connected to the frame 2 by bolts, ensuring its fixed stability during long-term use, reducing the risk of loosening due to vibration or external forces, and significantly improving the reliability of the engine hood 1 assembly.

[0061] In a preferred embodiment, the contact surface between the limiting part and the elastic fixing block 32 is set as an inclined surface.

[0062] It should be noted that the contact surface between the limiting part and the elastic fixing block 32 is set as an inclined plane (approximately 10°). When the engine hood 1 is closed, the wedge-shaped protruding limiting block 31 inserts into the groove 321 of the nylon block, forming a wedge-shaped tenon and mortise structure. This design utilizes the wedge principle of the inclined plane to significantly enhance the limiting stability of the engine hood 1 in the closed state, effectively preventing the engine hood 1 from swinging or shifting due to vibration or external force. The inclined plane design allows the limiting block 31 and the groove 321 of the nylon block to generate greater friction and clamping force when in contact, automatically forming a tight clamping state when the engine hood 1 falls, ensuring a tight fit between the engine hood 1 and the frame 2, maintaining a stable closed state even under complex working conditions. The inclined plane design not only provides a reliable clamping effect when closed, but also facilitates the opening of the engine hood 1. Due to the wedge-shaped structure of the inclined surface, when it is necessary to open the engine hood 1, simply lift the engine hood 1 upwards, and the wedge-shaped protrusion limiting block 31 and the nylon block slot 321 can quickly disengage, reducing the force required to open and improving the convenience of operation.

[0063] In the above case, the elastic fixing block 32 has a U-shaped structure and is adjustablely mounted on the engine hood 1 via the mounting plate 33 and the clamping plate 34.

[0064] Understandably, the U-shaped structure of the elastic fixing block 32 provides a wider support area and a more uniform force distribution. When the engine hood 1 is closed, the U-shaped structure better encloses and secures the limiting block 31, significantly enhancing the stability of the engine hood 1 during operation, reducing swaying or loosening caused by vibration or external forces, and improving the reliability of equipment operation. The elastic fixing block 32 is adjustablely mounted on the engine hood 1 via the mounting plate 33 and clamping plate 34, and has a slotted hole allowing for flexible adjustment of its vertical position (along the direction towards or away from the engine hood 1). This allows the elastic fixing block 32 to accommodate dimensional deviations that may occur during assembly, ensuring optimal fit between the limiting block 31 and the elastic fixing block 32, and improving the system's versatility and adaptability.

[0065] In summary, the excavator engine hood assembly provided by this utility model adopts a wedge-shaped tenon and mortise structure that is adjustable in all directions. Through the left-right adjustment of the limiting component and the up-down adjustment of the elastic fixing block 32, the engine hood 1 is precisely positioned, effectively preventing its swaying during operation. When the engine hood 1 is closed, the wedge-shaped protruding limiting block 31, fixed on the frame 2, precisely inserts into the slot 321 of the nylon block, forming a tight wedge-shaped tenon and mortise structure when the engine hood 1 falls, achieving a secure positioning effect. Through the synergistic action of the rubber limiting block and the locking component 4, the up-down locking position of the engine hood 1 can be further adjusted to ensure that the wedge-shaped protruding limiting block 31 and the nylon block achieve the optimal degree of clamping. When the engine hood 1 is opened, because the contact surface between the wedge-shaped protruding limiting block 31 and the nylon block is an angled bevel design, when the engine hood 1 is lifted upwards, the limiting block 31 can quickly disengage from the nylon block, avoiding excessive opening force due to clamping and ensuring ease of operation. After the engine hood 1 is locked, the wedge-shaped protruding limiting block 31 is fixed relative to the frame 2, and the nylon block is fixed relative to the engine hood 1. The wedge-shaped tenon and mortise structure formed by the two not only limits the position of the non-installation side of the engine hood 1, but also, combined with the fixing effect of the hinge 8 on the installation side, effectively limits the position of both sides of the engine hood 1. This design not only ensures the accuracy of the installation position of the engine hood 1, but also effectively avoids the swaying of the engine hood 1 caused by the vibration of the whole machine, significantly reduces the force on the hinge 8 end of the engine hood 1, thereby protecting the hinge 8 from damage and extending the service life of the engine hood 1 and related components.

[0066] This excavator engine hood assembly achieves high-precision positioning of the engine hood 1 and significantly enhances vibration and noise reduction performance. This design cleverly distributes the force on the hinge 8 end of the engine hood 1, effectively reducing the burden on the hinge 8 and thus significantly extending its service life. Simultaneously, it effectively prevents the engine hood 1 from cracking due to vibration or external forces, ensuring the stability and durability of the engine hood 1 under complex working conditions and significantly improving the overall reliability of the product.

[0067] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0068] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0069] The excavator engine hood assembly provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. An excavator engine hood assembly, characterized in that, The device includes an engine hood (1), a frame (2), and a limiting component (3). The limiting component (3) is used to connect the engine hood (1) and the frame (2). The limiting component (3) includes a limiting block (31) and an elastic fixing block (32). The elastic fixing block (32) is provided with a slot (321). The limiting block (31) is detachably disposed in the slot (321).

2. The excavator engine hood assembly according to claim 1, characterized in that, It also includes a locking assembly (4), which includes a locking member (41) and a locking tongue (42). The locking member (41) is located on the frame (2), and the locking tongue (42) is rotatably located on the engine hood (1). By rotating the locking tongue (42), the locking tongue (42) can be locked or unlocked with the locking member (41).

3. The excavator engine hood assembly according to claim 2, characterized in that, The locking tongue (42) is connected to the engine cover (1) via an adjusting screw (43) and a connecting assembly. The locking tongue (42) is adjustablely located on the adjusting screw (43) and locked by a locking nut (44).

4. The excavator engine hood assembly according to claim 1, characterized in that, It also includes a rubber limiting block (5), which is provided on the engine cover (1) by an adjustable screw and a mounting bracket (6) to limit the distance between the engine cover (1) and the frame (2).

5. The excavator engine hood assembly according to claim 1, characterized in that, A rubber sheet (7) is attached to the end face of the engine hood (1) opposite to the frame (2).

6. The excavator engine hood assembly according to claim 1, characterized in that, The limiting component (3) is provided in at least two sets, and the at least two sets of the limiting component (3) are arranged along the extension direction of the skeleton (2).

7. The excavator engine hood assembly according to claim 6, characterized in that, The limiting block (31) includes a connecting part and a limiting part. The connecting part is provided with an adjusting elongated hole, and the connecting part is connected to the skeleton (2) through the adjusting elongated hole and bolts.

8. The excavator engine hood assembly according to claim 7, characterized in that, The contact surface between the limiting part and the elastic fixing block (32) is set as an inclined surface.

9. The excavator engine hood assembly according to claim 8, characterized in that, The elastic fixing block (32) has a U-shaped structure and is adjustablely mounted on the engine hood (1) via the mounting plate (33) and the clamping plate (34).

10. The excavator engine hood assembly according to claim 9, characterized in that, The elastic fixing block (32) is a nylon block.

Images