A fuel filler door protective cover for a mining truck

Abstract

The utility model discloses a kind of MT heavy mine truck oil filler port protective cover, it is related to the technical field of automobile accessories, comprising: support frame, dust cover, transmission mechanism, reset mechanism and sealing assembly, support frame is used to fixedly installed on oil filling check valve;Dust cover is slidably arranged on the outside of support frame, for covering or exposing oil filling check valve;Transmission mechanism connects support frame and dust cover, for guiding dust cover to linearly slide relative to support frame;Reset mechanism connects support frame and dust cover, for providing the force that makes dust cover reset;Sealing assembly is arranged between support frame and dust cover, for sealing when dust cover is closed, effectively reduce equipment failure rate, effectively reduce maintenance personnel labor intensity, effectively improve operating efficiency, effectively ensure that equipment is more smoothly operated.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a protective cover for the refueling port of an MT heavy-duty mining truck. Background Technology

[0002] The fuel filler neck of the diesel tank in MT series mining heavy-duty trucks is a critical component, and its normal operation directly affects the cleanliness of the fuel and fuel consumption. While fuel filler necks have been continuously improved in recent years, existing protective measures are no longer sufficient. Inadequate fuel filler neck protection has led to numerous problems, including severe internal pollution of the diesel tank, clogged fuel filters causing poor fuel delivery, premature wear and blockage of valves such as the PT pump, injectors, and actuators, resulting in abrasive wear of internal engine components, black smoke, reduced power, increased failure rate, and increased fuel and lubricant consumption. These malfunctions not only severely impact equipment efficiency but also increase the complexity of engine maintenance and the workload of drivers and maintenance personnel. Existing technology urgently needs improvement to solve the problem of difficult-to-clean fuel filler neck dust, meet equipment usage requirements, and ensure smooth production operations. Utility Model Content

[0003] The purpose of this utility model is to provide a protective cover for the refueling port of an MT heavy-duty mining truck, so as to solve the problems existing in the prior art, effectively reduce the equipment failure rate, effectively reduce the labor intensity of maintenance personnel, effectively improve the work efficiency, and effectively ensure smoother operation of the equipment.

[0004] To achieve the above objectives, this utility model provides the following solution:

[0005] This utility model provides a protective cover for the refueling port of an MT heavy-duty mining truck, comprising: a support frame, a dust cover, a transmission mechanism, a reset mechanism, and a sealing assembly. The support frame is fixedly installed on a refueling check valve. The dust cover is slidably disposed on the outside of the support frame to cover or expose the refueling check valve. The transmission mechanism connects the support frame and the dust cover, guiding the dust cover to slide linearly relative to the support frame. The reset mechanism connects the support frame and the dust cover, providing a force to reset the dust cover. The sealing assembly is disposed between the support frame and the dust cover, achieving a seal when the dust cover is closed.

[0006] Preferably, the transmission mechanism includes a first transmission rod hole disposed at the lower part of the support frame, a second transmission rod hole disposed at the bottom of the dust cover, and a T-shaped transmission rod, wherein the T-shaped transmission rod passes through the first transmission rod hole and the second transmission rod hole.

[0007] Preferably, the T-shaped transmission rod has a segmented structure, and the T-shaped transmission rod is fixedly connected by a middle joint and an internal countersunk bolt.

[0008] Preferably, the reset mechanism includes at least one pair of hanging ears symmetrically arranged in the middle of the support frame, at least one pair of lifting ears symmetrically arranged in the middle of the dust cover, and a tension reset spring, the two ends of which are respectively connected between the corresponding hanging ears and the lifting ears.

[0009] Preferably, both the hanging lug and the lifting lug are L-shaped structures.

[0010] Preferably, the sealing assembly includes a sealing ring frame fixed to the outside of the support frame, and at least one sealing ring installed on the sealing ring frame; wherein, the inner wall of the dust cover is interference-fitted with the sealing ring when closed.

[0011] Preferably, the sealing ring holder is provided with three mounting rings for installing irregularly shaped sealing rings.

[0012] Preferably, the support frame has a circular structure.

[0013] Preferably, the lower part of the support frame is provided with a reinforcing boss, and the first transmission rod hole is formed on the reinforcing boss.

[0014] Preferably, the dust cover is provided with a handle at the rear.

[0015] The present invention achieves the following technical advantages over the prior art:

[0016] This utility model provides a protective cover for the refueling port of an MT heavy-duty mining truck. By fixing a support frame to the refueling check valve, a sliding dust cover, in conjunction with a transmission mechanism, achieves linear sliding, quickly covering or exposing the refueling check valve. A reset mechanism automatically provides reset force after refueling, ensuring the dust cover closes promptly without manual intervention, improving operational convenience. The sealing component cooperates with the inner wall of the dust cover to form a multi-layered sealing barrier in the closed state, effectively preventing dust, slag, and other impurities from the mining environment from entering the refueling port, avoiding diesel tank contamination and wear on related components, effectively improving operational efficiency, and ensuring smoother equipment operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of the MT heavy-duty mining truck refueling port protective cover provided by this utility model;

[0019] Figure 2 Exploded view of the fuel filler cover for the MT heavy-duty mining truck provided by this utility model;

[0020] Figure 3 A schematic diagram of the support frame in the fuel filler cover of the MT heavy-duty mining truck provided by this utility model;

[0021] Figure 4 A schematic diagram of the sealing ring in the fuel filler cover of the MT heavy-duty mining truck provided by this utility model;

[0022] In the diagram: 1. Filling check valve, 2. Support frame, 3. Hanging lug, 4. Reinforcing boss, 5. First transmission rod hole, 6. T-shaped transmission rod, 7. Sealing ring frame, 8. Sealing ring, 9. Dust cover, 10. Connecting boss, 11. Second transmission rod hole, 12. Lifting lug, 13. Handle, 14. Tension return spring. Detailed Implementation

[0023] 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.

[0024] The purpose of this utility model is to provide a protective cover for the refueling port of an MT heavy-duty mining truck, so as to solve the problems existing in the prior art, effectively reduce the equipment failure rate, effectively reduce the labor intensity of maintenance personnel, effectively improve the work efficiency, and effectively ensure smoother operation of the equipment.

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] This utility model provides a protective cover for the refueling port of an MT heavy-duty mining truck, as shown in Figures 1-4. It includes a support frame 2, a dust cover 9, a transmission mechanism, a reset mechanism, and a sealing assembly. The support frame 2 is fixedly installed on the refueling check valve 1. The dust cover 9 is slidably disposed on the outside of the support frame 2 to cover or expose the refueling check valve 1. The transmission mechanism connects the support frame 2 and the dust cover 9, guiding the dust cover 9 to slide linearly relative to the support frame 2. The reset mechanism connects the support frame 2 and the dust cover 9, providing a force to reset the dust cover 9. The sealing assembly is disposed between the support frame 2 and the dust cover 9, achieving a seal when the dust cover 9 is closed. By clearly defining each main component and its function, a complete and clear structural system for the refueling port protective cover is constructed. The components work together to effectively protect the refueling check valve 1. The support frame 2 ensures a stable connection between the protective device and the refueling check valve 1, and the dust cover 9 slidably covers and exposes the refueling check valve 1, meeting the needs of refueling operations. The transmission mechanism ensures smooth sliding of the dust cover 9, the reset mechanism automatically resets the dust cover 9, and the sealing component prevents dust and debris from entering when closed, thus improving the overall practicality and reliability of the protective device.

[0027] In a preferred embodiment, the transmission mechanism includes a first transmission rod hole 5 located at the lower part of the support frame 2, a connecting boss 10 located at the bottom of the dust cover 9, a second transmission rod hole 11 located on the connecting boss 10, and a T-shaped transmission rod 6 passing through the first transmission rod hole 5 and the second transmission rod hole 11. This simple and direct transmission mechanism design can accurately guide the dust cover 9 to slide linearly relative to the support frame 2. The cooperation between the two transmission rod holes and the T-shaped transmission rod 6 ensures that the dust cover 9 moves smoothly and steadily during opening and closing, facilitating driver operation and ensuring the stability and reliability of the protective device in actual use. Furthermore, the simple structure facilitates subsequent maintenance and repair.

[0028] In a preferred embodiment, the T-shaped transmission rod 6 is a segmented structure. The T-shaped transmission rod 6 is connected via a central joint and secured with countersunk bolts. This segmented design, along with the central joint and countersunk bolt connection, greatly facilitates the manufacturing, installation, and subsequent maintenance of the device. During manufacturing, the segmented structure is easier to form; during installation, the joint and bolt fixing method simplifies the installation process; and during later maintenance, if the T-shaped transmission rod 6 is damaged, only the countersunk bolts need to be removed, allowing for flexible disassembly of the joint, facilitating overall replacement or repair of the damaged portion, reducing maintenance costs and improving the maintainability of the equipment.

[0029] In a preferred embodiment, the reset mechanism includes at least one pair of hooks 3 symmetrically arranged in the middle of the support frame 2, at least one pair of lifting lugs 12 symmetrically arranged in the middle of the dust cover 9, and a tension reset spring 14. The two ends of the tension reset spring 14 are respectively connected between the corresponding hooks 3 and lifting lugs 12. The reset mechanism formed by the symmetrically arranged hooks 3, lifting lugs 12, and tension reset spring 14 can accurately and stably provide a reset force for the dust cover 9. After the dust cover 9 is opened, the tension reset spring 14 can reliably pull the dust cover 9 back to its initial position using its elastic restoring force, achieving an automatic reset function. Moreover, this symmetrical structure ensures a uniform distribution of tension, guaranteeing that the dust cover 9 will not shift or jam during the reset process, thus ensuring the smoothness and stability of the protective device's use.

[0030] In a preferred embodiment, both the hook 3 and the lifting lug 12 are L-shaped structures. Compared to connectors with ordinary shapes, the L-shaped hook 3 and lifting lug 12 have better stability and connection strength. The L-shaped structure effectively prevents the spring 14 from slipping or shifting during use after installation, ensuring that the reset mechanism is always in a reliable working state. At the same time, the L-shaped design also allows the tension return spring 14 to better exert its elastic force, accurately realizing the reset function of the dust cover 9.

[0031] In a preferred embodiment, the sealing assembly includes a sealing ring frame 7 fixed to the outside of the support frame 2, and at least one sealing ring 8 mounted on the sealing ring frame 7. The inner wall of the dust cover 9 is press-fitted with the sealing ring 8 when closed. This design of the sealing assembly, by fixing the sealing ring 8 with the sealing ring frame 7 and utilizing the press-fit between the inner wall of the dust cover 9 and the sealing ring 8, achieves a good sealing effect when the dust cover 9 is closed. This effectively prevents dust, rainwater, and other impurities from entering the filler port, protects the filler check valve 1 and related components from external contaminants, extends the service life of the components, and ensures the normal operation of the equipment.

[0032] In a preferred embodiment, the sealing ring holder 7 is provided with three mounting rings for installing irregularly shaped sealing rings 8. The design of the three mounting rings and the irregularly shaped sealing rings 8 achieves multiple sealing functions. Different types of sealing rings 8 can effectively block different dust particles, liquids, and external environmental factors. This multi-seal structure greatly improves the reliability and comprehensiveness of the seal, and can better meet the refueling port protection requirements of MT heavy-duty mining trucks in various complex working conditions and harsh environments.

[0033] In a preferred embodiment, the support frame 2 is a circular structure. The circular structure of the support frame 2 offers better versatility and adaptability, enabling it to fit various shapes of refueling check valves 1 and the refueling port installation locations of MT heavy-duty mining trucks. This reduces the difficulty of equipment adaptation and minimizes installation problems caused by interface incompatibility. Simultaneously, the circular structure distributes stress evenly, maintaining structural stability under the long-term weight of the dust cover 9 and external forces during operation, making it less prone to deformation and damage.

[0034] In a preferred embodiment, a reinforcing boss 4 is provided at the lower part of the support frame 2, and the first transmission rod hole 5 is formed on the reinforcing boss 4. The reinforcing boss 4 enhances the structural strength and load-bearing capacity of the lower part of the support frame 2. Because the first transmission rod hole 5 is formed on the reinforcing boss 4, the support frame 2 can more stably bear the force transmitted by the transmission rod during the linear sliding of the T-shaped transmission rod 6 to open and close the dust cover 9, and is less prone to shaking or deformation. This ensures the smooth operation of the transmission mechanism and also improves the reliability and stability of the entire protective cover device during operation.

[0035] In a preferred embodiment, a handle 13 is provided at the rear of the dust cover 9. The handle 13 greatly facilitates the driver's operation of the dust cover 9. During refueling operations, the driver can easily pull the dust cover 9 by simply grasping the handle 13, thus covering or exposing the refueling check valve 1, greatly improving the convenience and efficiency of the refueling operation. The handle 13's location at the rear of the dust cover 9 is ergonomically designed, making the driver's operation more comfortable and natural.

[0036] The specific usage instructions for the MT heavy-duty mining truck fuel filler cap are as follows:

[0037] Open the protective shield before refueling.

[0038] Locating handle 13: When the driver arrives at the refueling port, he finds handle 13 located at the rear of the dust cover 9.

[0039] Pull handle 13: After grasping handle 13, pull backward with even force. At this time, the dust cover 9 will start to move under the action of the pulling force.

[0040] Cover movement: Since the T-shaped transmission rod 6 passes through the first transmission rod hole 5 on the lower reinforcing boss 4 of the support frame 2 and the second transmission rod hole 11 at the bottom of the dust cover 9, the dust cover 9 will slide upward in a straight line along the T-shaped transmission rod 6, and the tension return spring 14 will be stretched accordingly. The dust cover 9 will gradually open, and the oiling check valve 1 will be exposed for oiling operations.

[0041] Refueling operation in progress

[0042] After the refueling check valve 1 is exposed, the refueling personnel connect the refueling equipment to the refueling check valve 1 and begin normal refueling operations. During this period, because the sealing ring bracket 7 is equipped with three mounting rings for installing the irregular-shaped sealing ring 8, and the inner wall of the dust cover 9 has an interference fit with the sealing ring 8 when closed, even if some shaking occurs during refueling, the sealing assembly can still ensure the protective effect, preventing dust and other debris from entering the refueling port and avoiding adverse effects on the refueling check valve 1 and the engine.

[0043] Close the protective shield after refueling.

[0044] Release handle 13: After refueling, the driver releases the force on handle 13.

[0045] Automatic reset: At this time, the previously stretched tension reset spring 14 begins to contract and return to its original state. The two ends of the reset spring are respectively connected to the hanging lug 3 symmetrically arranged in the middle of the support frame 2 and the lifting lug 12 symmetrically arranged in the middle of the dust cover 9. Under the action of the spring contraction force, the dust cover 9 slides down in a straight line along the T-shaped transmission rod 6 until it returns to the initial closed position.

[0046] Complete protection: After the dust cover 9 is closed, its inner wall fits tightly with the sealing ring 8 to achieve a tight seal, which can effectively prevent dust and other impurities from entering, and provide good protection for the refueling check valve 1 and engine components.

[0047] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A protective cover for the refueling port of an MT heavy-duty mining truck, characterized in that, include: Support frame, the support frame being used for fixed installation on the refueling check valve; A dust cover, which is slidably disposed on the outside of the support frame, is used to cover or expose the refueling check valve; A transmission mechanism connects the support frame and the dust cover, and is used to guide the dust cover to slide linearly relative to the support frame; A reset mechanism, which connects the support frame and the dust cover, is used to provide a force to reset the dust cover; A sealing assembly is disposed between the support frame and the dust cover, for achieving a seal when the dust cover is closed.

2. The protective cover for the refueling port of an MT heavy-duty mining truck according to claim 1, characterized in that, The transmission mechanism includes: The first transmission rod hole is located at the lower part of the support frame; The second transmission rod hole is located at the bottom of the dust cover; The T-shaped transmission rod passes through the first transmission rod hole and the second transmission rod hole.

3. A protective cover for the refueling port of an MT heavy-duty mining truck according to claim 2, characterized in that, The T-shaped transmission rod has a segmented structure, and the T-shaped transmission rod is fixedly connected by a middle joint and an internal countersunk bolt.

4. The protective cover for the refueling port of an MT heavy-duty mining truck according to claim 1, characterized in that, The reset mechanism includes: At least one pair of hanging ears symmetrically arranged in the middle of the support frame; At least one pair of lifting lugs symmetrically arranged in the middle of the dust cover; A tension return spring, the two ends of which are respectively connected between the corresponding hanging lug and the lifting lug.

5. A protective cover for the refueling port of an MT heavy-duty mining truck according to claim 4, characterized in that, Both the hanging lug and the lifting lug have an L-shaped structure.

6. A protective cover for the refueling port of an MT heavy-duty mining truck according to claim 1, characterized in that, The sealing assembly includes: A sealing ring frame fixed to the outside of the support frame; At least one sealing ring is installed on the sealing ring frame; The inner wall of the dust cover is press-fitted with the sealing ring when closed.

7. A protective cover for the refueling port of an MT heavy-duty mining truck according to claim 6, characterized in that, The sealing ring frame is provided with three mounting rings for installing irregularly shaped sealing rings.

8. A protective cover for the refueling port of an MT heavy-duty mining truck according to claim 1, characterized in that, The support frame has a circular structure.

9. A protective cover for the refueling port of an MT heavy-duty mining truck according to claim 2, characterized in that, The lower part of the support frame is provided with a reinforcing boss, and the first transmission rod hole is opened on the reinforcing boss.

10. A protective cover for the refueling port of an MT heavy-duty mining truck according to claim 1, characterized in that, A handle is provided at the rear of the dust cover.

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