A excavator engine cover facilitating overhauling
By using a split design and a limiting mechanism, the problem of difficult disassembly of the engine cover of existing excavators has been solved, enabling a convenient inspection and maintenance process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINING STRONG NEW ENERGY CO LTD
- Filing Date
- 2025-09-12
- Publication Date
- 2026-08-04
AI Technical Summary
Existing excavator engine covers are generally one-piece bolted, which is troublesome to disassemble and makes inspection and maintenance difficult.
The engine hood features a split design, which allows for easy disassembly through the cooperation of a limiting mechanism and the hood cover. The use of components such as a limiting box, limiting post, lever, return spring, and locking rod facilitates the opening and closing of the hood cover.
It greatly simplifies the inspection and maintenance process of excavator engines, avoids the trouble of disassembling traditional one-piece hoods, and improves maintenance efficiency.
Smart Images
Figure CN224591514U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of excavator engine cover technology, specifically an excavator engine cover that is easy to inspect and maintain. Background Technology
[0002] An excavator engine hood is a device used to protect the excavator engine. Its main function is to prevent the engine from being damaged by various factors in the external environment and working environment, such as dust, gravel, and rainwater. At the same time, the engine hood can also reduce the noise generated by the engine during operation to a certain extent, improving the comfort of the working environment.
[0003] Chinese patent CN222810099U discloses an excavator engine hood that solves the problems of current excavator engine hoods on the market. It includes a hood body with a connecting hole on one side and a heat dissipation hole on the other side. A protective frame is fixedly connected to the inner side of the hood body. A barrier net reduces the entry of external debris or dust particles into the inner side of the hood, minimizing their impact on the engine. A cleaning brush cleans the surface of the barrier net, and a drive motor drives a crossbeam to reciprocate along one side of the barrier net, reducing dust accumulation on the net surface. A rotating fixed rod drives a drive fan to rotate along one side of the limiting frame. This rotation improves the heat dissipation effect of the heat dissipation holes and enhances airflow within the hood, thereby improving the stability of the excavator engine's operation within the hood.
[0004] However, the excavator engine cover disclosed in the above patent still has certain shortcomings in practical applications. Since the existing excavator engine cover is generally a one-piece structure that is fixed to the excavator body with bolts, it is relatively troublesome to disassemble, which makes it difficult to carry out maintenance and repair of the excavator engine. Utility Model Content
[0005] The purpose of this utility model is to provide an excavator engine cover that is easy to inspect and maintain, in order to solve the problem mentioned in the background art that the existing excavator engine cover is generally a one-piece fixed to the excavator body with bolts, which is relatively troublesome to disassemble and causes certain difficulties when it is necessary to inspect and maintain the excavator engine.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an excavator engine hood that is easy to inspect and maintain, comprising an engine hood, an engine hood cover plate provided in the top inner cavity of the engine hood, a cover plate rotating shaft provided through the left end of the engine hood cover plate, the front and rear ends of the cover plate rotating shaft passing through the front and rear side walls of the engine hood respectively via bearings, the left and right side walls of the engine hood cover plate are both arc-shaped, a limit wheel is fixedly installed on the front end of the cover plate rotating shaft, a plurality of limit holes are evenly opened on the circumferential side wall of the limit wheel, and a limit mechanism is provided on the front wall of the engine hood.
[0007] Preferably, the limiting mechanism includes a limiting box, a lever, and a limiting post. The limiting box is fixedly installed on the front wall of the engine hood and is located directly below the limiting wheel. The upper and lower end posts of the limiting post respectively movably penetrate the upper and lower side walls of the limiting box, and the lever is fixedly installed on the bottom end post of the limiting post.
[0008] Preferably, the limiting mechanism further includes a squeezing block and a return spring. The squeezing block and the return spring are both located in the inner cavity of the limiting box. The squeezing block is fixedly sleeved on the surface of the limiting post, and the return spring is sleeved on the surface of the limiting post. The return spring is located at the bottom of the squeezing block, and the top end of the limiting post is movably inserted into the cavity of the limiting hole.
[0009] Preferably, the limiting mechanism further includes a locking rod and a rectangular through groove. The locking rod is fixedly installed on the circumferential side wall of the top column of the limiting post, and the rectangular through groove is opened in the top wall of the limiting box. The locking rod is adapted to the cavity of the rectangular through groove.
[0010] Preferably, the front wall of the engine hood and the body of the engine hood cover are respectively equipped with a first dustproof net and a second dustproof net, and a handle is fixed to the top wall of the right end of the engine hood cover.
[0011] Preferably, the right top wall of the engine hood has two symmetrically arranged slots, and the right side wall of the engine hood cover plate has two symmetrically arranged blocks fixedly installed. The blocks are movably inserted into the slots adjacent to them, and the bottom four corners of the engine hood are all fixed with fixing plates.
[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention achieves a split design for the engine hood through the engine hood and hood cover. When maintenance of the excavator engine is required, simply pull down the limiting post using the lever, causing it to disengage from the limiting hole on the limiting wheel surface. During this process, the pressing block inside the limiting box moves downward and compresses the return spring. Once the locking rod on the limiting post descends through the rectangular slot into the limiting box, rotating the limiting post prevents the locking rod from being directly below the rectangular slot. Under the action of the return spring, the locking rod then abuts against the top wall of the inner cavity of the limiting box. The limiting post can be positioned and fixed, preventing it from rising and re-inserting into the limiting hole after the release of the lever. Then, the hood cover can be opened by the handle, allowing the locking block to disengage from the slot and the hood cover to rotate around the cover plate axis, so that the hood cover can be placed vertically. This makes it convenient to inspect and maintain the excavator engine inside the engine hood, avoiding the problem that the existing excavator engine hood is generally a one-piece fixed to the excavator body by bolts, which is more troublesome to disassemble. This greatly facilitates the inspection and maintenance of the engine. Attached Figure Description
[0013] Figure 1 This is a first-view structural schematic diagram of an excavator engine hood that is easy to inspect and maintain according to the present invention; Figure 2 This utility model Figure 1 Enlarged structural diagram at point A; Figure 3 This utility model Figure 1 Enlarged structural diagram at point B; Figure 4 This is a cross-sectional schematic diagram of the limiting box structure of an excavator engine hood that is easy to inspect and maintain, according to the present invention.
[0014] In the diagram: 1. Engine hood; 101. Slot; 2. Fixing plate; 3. First dustproof net; 4. Engine hood cover plate; 401. Cover plate pivot; 402. Locking block; 5. Second dustproof net; 6. Handle; 7. Limiting wheel; 8. Limiting hole; 9. Limiting box; 10. Pulley; 11. Limiting post; 12. Locking rod; 13. Rectangular through slot; 14. Pressing block; 15. Return spring. Detailed Implementation
[0015] 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.
[0016] Please see Figure 1, Figure 2 , Figure 3 , Figure 4 This utility model provides a technical solution: an excavator engine hood that is easy to inspect and maintain, including an engine hood 1, an engine hood cover plate 4 disposed in the top inner cavity of the engine hood 1, a cover plate rotating shaft 401 passing through the left end of the engine hood cover plate 4, the front and rear ends of the cover plate rotating shaft 401 passing through the front and rear side walls of the engine hood 1 respectively via bearings, the purpose of which is to allow the engine hood cover plate 4 to rotate. The left and right side walls of the engine hood cover plate 4 are both arc-shaped, the purpose of which is to prevent the engine hood cover plate 4 from not rotating normally. A limiting wheel 7 is welded to the front end of the cover plate rotating shaft 401, and multiple limiting holes 8 are evenly opened on the circumferential side wall of the limiting wheel 7. A limiting mechanism is provided on the front wall of the engine hood 1.
[0017] The limiting mechanism includes a limiting box 9, a lever 10, and a limiting post 11. The limiting box 9 is welded to the front wall of the engine hood 1 and is located directly below the limiting wheel 7. The upper and lower ends of the limiting post 11 movably penetrate the upper and lower side walls of the limiting box 9, respectively. The lever 10 is welded to the bottom end of the limiting post 11 to facilitate the movement of the limiting post 11 via the lever 10. The limiting mechanism also includes a pressing block 14 and a return spring 15. All springs 15 are located within the inner cavity of the limiting box 9, and the pressing block 14 is welded and sleeved on the surface of the limiting post 11. The return spring 15 is sleeved on the surface of the limiting post 11 and is located at the bottom of the pressing block 14. The top end of the limiting post 11 is movably inserted into the cavity of the limiting hole 8. When the limiting post 11 is inserted into the limiting hole 8, the limiting wheel 7 is locked, preventing the cover plate rotating shaft 401 from rotating. The limiting mechanism also includes a locking rod 12 and a rectangular through slot 1. 3. The locking rod 12 is welded to the circumferential side wall of the top column of the limiting post 11. The rectangular through groove 13 is opened on the top wall of the limiting box 9, and the locking rod 12 is adapted to the groove cavity of the rectangular through groove 13. The purpose is to allow the locking rod 12 to pass through the rectangular through groove 13. The first dustproof net 3 and the second dustproof net 5 are respectively installed on the front wall of the engine cover 1 and the plate of the engine cover 4. The purpose is to provide dustproof and heat dissipation effects. The handle 6 is welded to the top wall of the right end of the engine cover 4. The purpose is to facilitate opening the engine cover 4. Two symmetrically arranged locking grooves 101 are opened on the top right side of the engine cover 1. Two symmetrically arranged locking blocks 402 are welded to the right side of the engine cover 4. The locking blocks 402 are movably inserted into the groove cavity of the adjacent locking groove 101. The purpose is to improve the installation stability of the engine cover 4. Fixing plates 2 are welded to the bottom four corners of the engine cover 1. The purpose is to facilitate the fixing of the engine cover 1.
[0018] Working principle: The engine hood 1 and the engine cover plate 4 achieve a split design for the engine hood. When the excavator engine needs maintenance, simply pull down the limiting post 11 via the lever 10, causing the limiting post 11 to be pulled out of the limiting hole 8 on the surface of the limiting wheel 7. During this process, the pressing block 14 inside the limiting box 9 moves downward and presses the return spring 15. When the locking rod 12 on the limiting post 11 descends into the limiting box 9 through the rectangular through groove 13, rotating the limiting post 11 prevents the locking rod 12 from being directly below the rectangular through groove 13. Under the action of the return spring 15, the locking rod 12 is then aligned with the inner cavity of the limiting box 9. The top wall abuts against the limit post 11, thus fixing the position. This prevents the limit post 11 from rising and re-inserting into the limit hole 8 after the lever 10 is released. Then, the handle 6 can be used to open the hood cover 4, causing the locking block 402 to disengage from the slot 101. This allows the hood cover 4 to rotate around the cover plate pivot 401, positioning it vertically. This facilitates the inspection and maintenance of the excavator engine inside the engine hood 1, avoiding the problem that existing excavator engine hoods are generally one-piece and bolted to the excavator body, making disassembly difficult. This greatly simplifies engine inspection and maintenance. After the inspection and maintenance are completed, the cover plate 4 is reset, and the limiting post 11 is rotated again so that the locking rod 12 is directly below the rectangular through groove 13. The lever 10 is released so that the limiting post 11 rises under the action of the reset spring 15, the locking rod 12 passes through the rectangular through groove 13, and the limiting post 11 is inserted into the limiting hole 8 to fix the cover plate rotating shaft 401.
[0019] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An excavator engine cover facilitating service and maintenance, comprising an engine cover (1), characterized in that: The engine hood (1) has an engine cover plate (4) in the top inner cavity. A cover plate shaft (401) is provided through the left end of the engine cover plate (4). The front and rear ends of the cover plate shaft (401) are respectively passed through the front and rear side walls of the engine hood (1) via bearings. The left and right side walls of the engine cover plate (4) are both arc surfaces. A limit wheel (7) is fixedly installed on the front end shaft of the cover plate shaft (401). Multiple limit holes (8) are evenly opened on the circumferential side wall of the limit wheel (7). A limit mechanism is provided on the front wall of the engine hood (1).
2. The excavator engine cover that facilitates serviceability maintenance of claim 1, wherein: The limiting mechanism includes a limiting box (9), a lever (10), and a limiting post (11). The limiting box (9) is fixedly installed on the front wall of the engine hood (1) and is located directly below the limiting wheel (7). The upper and lower ends of the limiting post (11) are respectively movable through the upper and lower side walls of the limiting box (9), and the lever (10) is fixedly installed on the bottom end of the limiting post (11).
3. The excavator engine cover that facilitates serviceability maintenance of claim 2, wherein: The limiting mechanism also includes a squeezing block (14) and a return spring (15). The squeezing block (14) and the return spring (15) are both located in the inner cavity of the limiting box (9). The squeezing block (14) is fixedly sleeved on the surface of the limiting post (11). The return spring (15) is sleeved on the surface of the limiting post (11). The return spring (15) is located at the bottom of the squeezing block (14). The top end of the limiting post (11) is movably inserted into the cavity of the limiting hole (8).
4. The excavator engine cover that facilitates serviceability maintenance of claim 3, wherein: The limiting mechanism also includes a locking rod (12) and a rectangular through groove (13). The locking rod (12) is fixedly installed on the circumferential side wall of the top column of the limiting column (11). The rectangular through groove (13) is opened on the top wall of the limiting box (9), and the locking rod (12) is adapted to the groove cavity of the rectangular through groove (13).
5. The excavator engine cover that facilitates serviceability maintenance of claim 1, wherein: The front wall of the engine hood (1) and the plate of the engine hood cover (4) are respectively equipped with a first dustproof net (3) and a second dustproof net (5), and a handle (6) is fixed on the top wall of the right end of the engine hood cover (4).
6. The excavator engine cover that facilitates serviceability maintenance of claim 5, wherein: The right top wall of the engine hood (1) has two symmetrically arranged slots (101), and the right side wall of the engine hood cover plate (4) has two symmetrically arranged blocks (402) fixedly installed. The blocks (402) are movably inserted into the slots (101) adjacent to them. The bottom four corners of the engine hood (1) are all fixed with fixing plates (2).