Engineering machine cover

By using an electromagnet-controlled sliding door design and fiberglass material, the problem of balancing the convenience of maintenance access and space occupation in engineering machinery cover parts has been solved, enabling an efficient and convenient maintenance process in narrow environments.

CN224107158UActive Publication Date: 2026-04-10CHINA RAILWAY CONSTR HEAVY IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA RAILWAY CONSTR HEAVY IND
Filing Date
2025-03-17
Publication Date
2026-04-10

AI Technical Summary

Technical Problem

Existing engineering machinery cover components struggle to balance ease of use and space occupancy when it comes to accessing maintenance doors, making operation particularly inconvenient in confined spaces.

Method used

The sliding door design, which uses electromagnets to lock and unlock the door, combined with fiberglass material and a pulley structure, reduces space occupation and improves flexibility.

Benefits of technology

It enables efficient and convenient maintenance in confined spaces, reduces space occupation, improves maintenance efficiency and structural flexibility, and adapts to usage needs under extreme conditions.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an engineering machinery covering part, which belongs to the technical field of engineering machinery and comprises a main cover and a sliding door, the main cover comprises a main body framework and a skin fixed on the main body framework, and a door frame structure is arranged on the main body framework; the sliding door comprises two door leaves, an upper track beam assembly and a lower track beam assembly, the upper track beam assembly and the lower track beam assembly are fixed to the two sides of the door frame structure respectively, and the two door leaves are arranged in parallel and are in sliding fit with the upper track beam and the lower track beam respectively to achieve opening and closing of the sliding door; the door frame structure is provided with an electromagnet used for attracting the door leaf, and locking and unlocking of the door leaf are achieved through switching of power-on and power-off of the electromagnet. The engineering machinery covering part is efficient and convenient in the overhauling process, door leaves do not need to be opened outwards or extra space does not need to be occupied, and the engineering machinery covering part is suitable for narrow tunnels or environments with limited space.
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Description

TECHNICAL FIELD

[0001] The utility model relates to engineering machinery technical field, concretely is engineering machinery covering piece. BACKGROUND

[0002] Tunnel engineering machinery often operates under extreme conditions, and the cross section of the tunnel is not uniform, and the working environment is extremely harsh. Dust and water vapor often permeate inside the tunnel, so a covering piece must be installed to protect internal components from damage, and a maintenance opening must be reserved to facilitate adjustment and maintenance of the internal structure. The design structure of the covering piece is diverse, and its rationality mainly depends on whether it can provide sufficient protection and whether it is convenient to maintain.

[0003] In terms of maintenance function, the covering piece usually has maintenance openings on the periphery and the top. These maintenance openings include double doors, side-hinged doors, and bottom-hinged doors with hinge or hinged structures; installation doors (cover plate doors) that are disassembled by bolts; and top-hinged doors that combine hinge structures with gas springs. Almost every maintenance door is equipped with a door lock to ensure fixation. These doors each have their advantages and disadvantages: side-hinged doors, double-hinged doors, and bottom-hinged doors with hinge structures (such as hinges) are convenient to operate, but they occupy a relatively large space and are not suitable for narrow tunnel environments; installation doors that use bolts directly need to be disassembled each time for maintenance, which is relatively cumbersome to operate, but they occupy a relatively small space and are easy to store after disassembly, providing high flexibility; top-hinged doors with hinge structures and gas springs are also convenient to operate, but they occupy more space during maintenance and have a complex top structure. For top-hinged doors of different sizes, the selection of gas springs and the design of hinge point structures are required, which increases design costs.

[0004] In summary, it is necessary to design a covering piece with a maintenance door that is easy to open and close and occupies little or no construction space. INVENTION CONTENTS

[0005] The utility model provides a kind of engineering machinery covering piece to solve the technical problem that the maintenance door of existing engineering machinery covering piece is difficult to consider in two aspects of use convenient and space occupation.

[0006] According to one aspect of the utility model, a kind of engineering machinery covering piece is provided, including main cover and sliding door, the main cover includes main body framework and the skin fixed on main body framework, door frame structure is provided on the main body framework;The sliding door includes two door leaves, upper rail beam assembly and lower rail beam assembly, the upper rail beam assembly and lower rail beam assembly are respectively fixed on the two sides of door frame structure, two the door leaves are parallelly arranged and respectively with upper rail and lower rail beam sliding cooperation to realize the opening and closing of sliding door;Electromagnet for adsorbing door leaf is provided on the door frame structure, the locking and unlocking of door leaf are realized by the on-off switching of electromagnet.

[0007] Optionally, the door frame structure comprises a stand column connected with the main body framework, both ends of the stand column are provided with a mounting socket, one side of the mounting socket is fixedly provided with a threaded plate, the upper rail beam assembly and the lower rail beam assembly are respectively installed in the corresponding mounting socket and fixed on the corresponding threaded plate through the fastener one.

[0008] Optionally, the stand column is provided with a buffer pad on the side close to the door leaf for buffering and limiting the door leaf.

[0009] Optionally, the upper rail beam assembly comprises an upper rail beam and a mounting bent plate arranged at both ends of the upper rail beam, and the fastener one is used to fixedly connect the mounting bent plate to the threaded plate.

[0010] Optionally, both ends of the door leaf are provided with a pulley mounting plate, the pulley mounting plate is provided with a pulley assembly, and the upper rail beam assembly and the lower rail beam assembly are both provided with a guide groove matched with the pulley assembly.

[0011] Optionally, the pulley assembly comprises a pulley shaft and pulley bodies arranged at both ends of the pulley shaft, the pulley shaft is arranged through the pulley mounting plate, and the two pulley bodies are respectively arranged on both sides of the pulley mounting plate.

[0012] Optionally, the guide groove is provided with a C-shaped protrusion and two flanges, the pulley mounting plate is arranged between the two flanges, and the end of the pulley mounting plate is arranged in the groove of the C-shaped protrusion to limit the pulley assembly.

[0013] Optionally, the door leaf comprises a door leaf main body and a glass steel door plate, the door leaf main body is a frame structure, and the glass steel door plate is fixedly installed on the door leaf main body through the fastener two.

[0014] Optionally, the cover body is provided with a quick-release cover door, the quick-release cover door comprises a cover door skin and cover door framework vertical plates, a plurality of cover door framework vertical plates form cross stiffeners, both sides of the quick-release cover door are provided with round head twist locks, and the main body framework is fixedly provided with a lock tongue baffle matched with the round head twist locks.

[0015] Optionally, the skin is provided with an upper flange structure at the position of the quick-release cover door, and the upper flange structure is located on the inner side of the quick-release cover door to limit the quick-release cover door.

[0016] In summary, the present application has at least one of the following beneficial technical effects:

[0017] The side of the engineering machinery cover is provided with a push-pull door controlled by an electromagnet, an electromagnet is pre-buried in the door frame, the electromagnet is used to lock or unlock the door leaf, and the door can be easily opened by pressing the switch during maintenance, without the need of traditional manual locks or disassembly operation, so that the maintenance process is more efficient and convenient, compared with traditional hinged doors or downward turning doors, the push-pull door is designed to minimize the space occupation, the push-pull door is designed to slide on the top and bottom tracks, without the need of opening the door leaf outwardly or occupying additional space, and is particularly suitable for narrow tunnels or environments with limited space, and still can ensure flexible opening and closing. In addition, by adopting the glass steel material and the push-pull door controlled by the electromagnet, the overall weight is reduced, the structure is simplified, and the maintenance efficiency is improved. The design of the quick-release door and the push-pull door not only saves space, but also ensures high reliability and long service life in harsh environments, has strong adaptability, and can better meet the use requirements of the engineering machinery under extreme conditions.

[0018] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The utility model will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings that form a part of this application are intended to provide a further understanding of the utility model, and the schematic embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute undue limitation on the utility model. In the drawings:

[0020] Figure 1 It is an overall structure schematic view of an oblique downward viewing angle for the preferred embodiment of the utility model;

[0021] Figure 2 It is an overall structure schematic view of an oblique upward viewing angle of the main cover 1 for the preferred embodiment of the utility model;

[0022] Figure 3 It is an overall structure schematic view of an oblique downward viewing angle of the quick-release cover plate door at the position of the main cover for the preferred embodiment of the utility model;

[0023] Figure 4 It is an overall structure schematic view of an oblique downward viewing angle and an oblique upward viewing angle of the quick-release cover plate door for the preferred embodiment of the utility model;

[0024] Figure 5 It is an overall structure schematic view of a width direction section of the main cover 1 for the preferred embodiment of the utility model;

[0025] Figure 6 It is an overall structure exploded schematic view of the push-pull door 18 for the preferred embodiment of the utility model;

[0026] Figure 7 It is a schematic view of the main cover door frame structure for the preferred embodiment of the utility model;

[0027] Figure 8 It is the schematic view of the main cover door frame structure of the preferred embodiment of the utility model;

[0028] Figure 9 It is the structure schematic view of the upper track beam assembly of the preferred embodiment of the utility model;

[0029] Figure 10 It is the schematic view of the section structure of the upper track beam assembly of the preferred embodiment of the utility model;

[0030] Figure 11 It is the schematic view of the door leaf structure of the preferred embodiment of the utility model.

[0031] Legend:

[0032] 1, main cover, 2, tool cabinet, 3, tool cabinet, 4, cover plate, 11, main body framework, 12, skin, 13, 14, 15, 16, 17, quick-release cover door, 18, left sliding door, 19, right sliding door, 113, 114, 115, valve block mounting bracket, 116, 117, electric control cabinet mounting bracket, 131, cover door skin, 132, cover door framework vertical plate, 133, top anti-skid tread, 134, round head twist lock, 119, lock tongue baffle, 121, upper flange structure, 181, door leaf, 182, upper track beam assembly, 183, lower track beam assembly, 118, door frame structure, 1181, electromagnet, 1182, fastener three, 1131, bent plate, 1132, mounting plate, 1161, 1171, mounting plate, 1183, pull rivet nut, 1184, round hole, 1185, wire binding plate, 1188, rubber block, 1821, upper track beam, 1822, mounting bent plate, 1823, fastener one, 1811, door leaf main body, 1812, pulley assembly, 1813, glass steel door plate, 1815, fastener two, 1831, lower track beam, 1821-1, C-shaped protrusion, 1821-2, flange, 1811-1, pulley mounting plate. DETAILED DESCRIPTION

[0033] The embodiments of the utility model are explained in detail below in combination with the drawings, but the utility model can be implemented in multiple different ways limited and covered by the following.

[0034] The embodiments of the utility model are explained in detail below in combination with the drawings, but the utility model can be implemented in multiple different ways limited and covered by the following. Figures 1-11 The application is further explained in detail.

[0035] The embodiments of the application disclose an engineering machinery covering piece.

[0036] Refer to Figure 1From the overall structure, the engineering machinery cover mainly includes a main cover 1, the main cover 1 in the engineering machinery cover provides structural support, protects the internal components and ensures the stable operation of the equipment. The front and rear of the main cover 1 are cooled by hexagonal punched screens, and the middle part is completely hollow due to the obstruction of other structures. The overall front and rear flow channels are smooth and well-ventilated.

[0037] In the specific embodiment, based on appearance and functional considerations, tool cabinets 2 and 3, and a cover plate 4 are also provided on the main cover. The tool cabinets 2 and 3 are also modeling modules, symmetrically arranged on the left and right sides, and the modeling is inspired by the compound eye of a bee. The left and right sides increase the cooling screen and the inclination angle, and cooperate with other structures to create the characteristics of a small and light overall machine. The overall modeling features are separated from the main cover 1, which is not only beautiful but also does not affect the main structure.

[0038] Specifically, referring to Figure 2 , the main cover includes a main body framework and a skin fixed to the main body framework. The main body framework of the main cover provides structural support and rigidity, ensuring the stable installation and safety of the internal components of the equipment, while optimizing the spatial layout to enable effective combination of various components. The skin serves as an external protective layer, preventing damage to the equipment from the external environment, while enhancing the rigidity of the overall structure to ensure the flatness and aesthetics of the appearance.

[0039] The skin 12 is fixed to the main body framework 11 by welding, ensuring the flatness and structural strength of the skin 12. At the top of the internal cavity formed by the main cover 1, hydraulic-related valve block mounting brackets 113, 114, and 115 are arranged, and the tail space of the main cover 1 is provided with electrical and electronic control cabinet mounting brackets 116 and 117. This structural design optimizes the top space of the cover, making the internal structure of the entire machine more compact and reasonable. Compared to traditional sheet metal cover, this structure not only improves the structural strength, but also maintains the rigidity of the cover, while ensuring the strength of the electrical and hydraulic component mounting brackets. Among them, the valve block mounting brackets 113, 114, and 115 are designed for hydraulic valve groups, and the design ideas are consistent. Taking the valve block mounting bracket 113 as an example, it is composed of a bent plate 1131 directly welded to the main body framework 11 and an installation plate 1132 with a cross-shaped waist hole adjustment function. Compared to directly installing the hydraulic valve block on the main body framework 11, this design provides the ability to adjust the position of the hydraulic valve block, thereby realizing a more flexible and convenient installation method. In particular, the tail electrical and electronic control cabinet mounting brackets 116 and 117 are not interfered by other components, and only need to set waist holes on the installation plates 1161 and 1171 to avoid interference with the installation beam itself, without the need for excessive design to increase costs.

[0040] Referring to Figure 3 , the main cover 1 is composed of top quick-release cover doors 13, 14, 15, 16, and 17, and the design of the above quick-release cover doors is consistent.

[0041] Referring to Figure 4 and Figure 5 Take the quick-release cover plate door 13 as an example, which is composed of a cover plate door skin 131, cover plate door framework vertical plates 132, and a top anti-skid tread plate 133. The plurality of cover plate door framework vertical plates 132 form cross-stiffening ribs (the vertical plate wide edge is perpendicular to the cover plate door skin 131, and the wide edge is greater than the high edge), similar to a simplified truss structure, which realizes the lightweight of the door body under the premise of ensuring the structural strength. Two cover plate door round head turn locks 134 are arranged on both sides of the quick-release cover plate door and cooperatively act with the lock tongue baffle 119 welded on the main body framework 11. At the same time, an upturned edge structure 121 is arranged on the skin 12 corresponding to the position of the quick-release cover plate door 13, which is located on the inner side of the quick-release cover plate door and is used for limiting the quick-release cover plate door. Since the size of the quick-release cover plate door 13 is greater than the size of the upturned edge structure 121 on the skin 12, when installing, the side of the quick-release cover plate door 13 with the top anti-skid tread plate 133 should be directed to the outside of the cover, and the other side should be in close contact with the skin 12, keeping the uniform gap around. Turning the two round head turn locks 134 and making the lock tongue card into the lock tongue baffle 119 can complete the locking of the quick-release cover plate door 13. The upturned edge structure 121 on the skin 12 has the functions of waterproofing and limiting. When maintenance or disassembly is needed, loosen the round head turn locks 134 and lift the handle, and the door can be directly disassembled.

[0042] Referring to Figure 6 The main body framework is provided with a door frame structure; the sliding door comprises two door leaves, an upper track beam assembly and a lower track beam assembly, the upper track beam assembly and the lower track beam assembly are respectively fixed on both sides of the door frame structure, the two door leaves are arranged in parallel and are respectively in sliding cooperation with the upper track beam and the lower track beam to realize the opening and closing of the sliding door; the door frame structure is provided with electromagnets for adsorbing the door leaves, and the locking and unlocking of the door leaves are realized through the on-off switching of the electromagnets. Such a design realizes the stable opening and closing of the door through the sliding cooperation of the two door leaves of the sliding door with the upper and lower track beam assemblies, saves space and adapts to narrow environments. The electromagnets are used to control the locking and unlocking of the door leaves, and through the on-off switching, convenient door operation is realized without the need for traditional door locks. This design improves the maintenance efficiency, avoids the occupation of space, enhances the flexibility and reliability of the structure, and is particularly suitable for work environments with limited space and frequent opening.

[0043] Referring to Figure 7 and Figure 8 In the door frame structure 118, two electromagnets 1181 are pre-embedded and connected through fasteners 1182. Specifically, a pull rivet nut 1183 is installed at the bottom, the wires of the electromagnets 1181 pass through the circular hole 1184 in the middle, and then extend to the nearest electric control cabinet structure along the wire board 1185.

[0044] The door frame structure 118 is provided with a connecting column connected with the main body framework on both sides, the connecting column is cut off partially to form a mounting socket, and a sealing plate 1186 and a threaded plate 1187 are welded on the mounting socket. The upper rail beam assembly and the lower rail beam assembly are respectively installed in the corresponding mounting sockets and fixed on the corresponding threaded plates through fasteners one.

[0045] Referring to Figure 9 , the structural design idea of the rail beam assembly is consistent in the upper rail beam assembly 182 and the lower rail beam assembly 183. Taking the upper rail beam assembly 182 as an example, the assembly is composed of an upper rail beam 1821 and two mounting bent plates 1822. The mounting bent plates 1822 are connected with the threaded plate 1187 on the door frame structure 118 through fasteners one 1823.

[0046] As Figure 10 shown, the figure shows the cross-sectional structure of the upper rail beam 1821, both ends of the door leaf are provided with pulley mounting plates, and pulley assemblies are arranged on the pulley mounting plates. The upper rail beam assembly and the lower rail beam assembly are both provided with guide grooves matched with the pulley assemblies. The guide grooves guide the movement of the pulleys, reduce the friction and wear of the door, prolong the service life, ensure the stability and accuracy of the door leaf during sliding, avoid the door leaf deviation or jamming phenomenon, and improve the overall use fluency and reliability.

[0047] The pulley assembly includes a pulley shaft and pulley bodies arranged at both ends of the pulley shaft. The pulley shaft is arranged on the pulley mounting plate, and the two pulley bodies are arranged on both sides of the pulley mounting plate. By arranging the pulley shaft on the pulley mounting plate and the pulley bodies on both sides of the pulley mounting plate, the stability and balanced distribution of the pulley assembly are ensured. The design of the pulley shaft allows the pulley bodies to rotate freely, reduces the friction, and improves the smoothness and flexibility of the sliding door. At the same time, the configuration of the pulley bodies on both sides ensures that the door leaf can remain balanced during opening and closing, avoiding the tilting or jamming of the door leaf caused by uneven force, and improving the overall use effect and durability.

[0048] A C-shaped protrusion and two flanges are arranged in the guide groove, the pulley mounting plate is arranged between the two flanges, and the end of the pulley mounting plate is arranged in the groove of the C-shaped protrusion to limit the pulley assembly. By arranging the C-shaped protrusion and the two flanges in the guide groove, the accurate positioning and stability of the pulley mounting plate in the guide rail are ensured. The end of the pulley mounting plate is arranged in the groove of the C-shaped protrusion, which can effectively prevent the pulley assembly from excessive displacement or deviation from the track during use, thereby improving the safety and reliability of the sliding door.

[0049] As Figure 11As shown, the door leaf includes a door leaf body and a glass steel door panel, the door leaf body is a frame structure, and the glass steel door panel is fixedly installed on the door leaf body through fastener two. The upper and lower sides of the door leaf body 1811 close to the positions of the upper rail beam assembly 182 and the lower rail beam assembly 183 are respectively welded with five pulley mounting plates 1811-1 for mounting pulley assemblies 1812.

[0050] The glass steel door panel 1813 is connected with the door leaf body 1811 through fastener two 1815 through bolt hole positions around. The overall structure is light, simple, stable and low in cost. The door leaf 181 is embedded into the upper rail mounting beam structure through the upper five pulley assemblies 1812 and is embedded into the lower rail beam structure through the lower five pulley assemblies 1812, so as to realize the sliding function of the sliding door.

[0051] In the initial installation process, the door leaf 181 is first installed into the rail space on the same side of the upper rail beam 1821 and the lower rail beam 1831, and then the door leaf 191 is installed into the rail space on the same side of the upper rail beam 1821 and the lower rail beam 1831; meanwhile, the installation bending 1822 is connected to the door frame structure 118 through fastener one 1823, and finally the upper and lower rail beams (1821, 1831) are respectively connected to the remaining mounting holes of the installation bending 1822. When maintenance is needed, the electromagnet is powered off, the sliding door can be slid to the cover side, the maintenance is completed, the sliding door is reset, and the electromagnet is opened to be locked. The whole maintenance door does not occupy space and is convenient to open and close.

[0052] The cover of the utility model uses quick-release type installation door at the top, which can meet the demand of the platform for walking over the top for maintenance and can realize quick release and quick installation of the maintenance door, does not occupy construction space during equipment maintenance, and does not have the cumbersome dismounting steps of bolt installation door; the upper edge is arranged on the framework skin, which can play the roles of waterproofing and limiting. The cover of the utility model creatively uses the sliding and swing door (the door moving left and right in the embedded rail) at both sides, which is convenient to open and close, does not occupy space, is suitable for more working conditions, and can still achieve maintenance and repair in a narrow tunnel. The sliding and swing door uses the pulley structure to be embedded into the installation beam at the top and the bottom, is smooth to open and close, and has simple and reliable structure. The door panel creatively uses glass steel material, the overall structure is lighter, and the cost is lower. The electromagnet is used to replace the door lock, the electromagnet installation space is pre-buried in the door frame framework, the space utilization rate is improved, the structure is more compact and reasonable, and use is more flexible and convenient. The cover of the utility model has sufficient maintenance doors around, is a semi-open cover, but has the same maintenance effect as the open cover.

[0053] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An engineering machinery cover, characterized in that: comprising a main cover (1) and a sliding door (18), the main cover (1) comprises a main body framework (11) and a skin (12) fixed on the main body framework (11), and a door frame structure (118) is arranged on the main body framework (11); the sliding door (18) comprises two door leaves (181), an upper track beam assembly (182) and a lower track beam assembly (183), the upper track beam assembly (182) and the lower track beam assembly (183) are respectively fixed on both sides of the door frame structure (118), and the two door leaves (181) are arranged in parallel and are respectively in sliding fit with the upper track beam assembly (182) and the lower track beam assembly (183) to realize opening and closing of the sliding door (18); and an electromagnet for adsorbing the door leaf (181) is arranged on the door frame structure (118), and locking and unlocking of the door leaf (181) are realized by switching of power-on and power-off of the electromagnet.

2. The engineering machinery cover according to claim 1, characterized in that: the door frame structure (118) comprises a stand connected with the main body framework (11), both ends of the stand are provided with mounting sockets, one side of the mounting socket is fixed with a threaded plate (1187), and the upper track beam assembly (182) and the lower track beam assembly (183) are respectively installed in the corresponding mounting socket and fixed on the corresponding threaded plate (1187) through a fastener one (1823).

3. The engineering machinery cover according to claim 2, characterized in that: a buffer pad is arranged on one side of the stand close to the door leaf (181) for buffering and limiting the door leaf (181).

4. The engineering machinery cover according to claim 3, characterized in that: the upper track beam assembly (182) comprises an upper track beam (1821) and mounting bent plates (1822) arranged at both ends of the upper track beam (1821), and the fastener one (1823) fixedly connects the mounting bent plates (1822) to the threaded plate (1187), and the lower track beam assembly (183) is identical in structure to the upper track beam assembly (182).

5. The engineering machinery cover according to claim 4, characterized in that: pulley mounting plates (1811-1) are arranged at both ends of the door leaf (181), pulley assemblies (1812) are arranged on the pulley mounting plates (1811-1), and guide grooves matched with the pulley assemblies (1812) are arranged on the upper track beam assembly (182) and the lower track beam assembly (183).

6. The engineering machinery cover according to claim 5, characterized in that: the pulley assembly (1812) comprises a pulley shaft and pulley bodies arranged at both ends of the pulley shaft, the pulley shaft is arranged through the pulley mounting plate (1811-1), and the two pulley bodies are respectively arranged on both sides of the pulley mounting plate (1811-1).

7. The engineering machinery cover according to claim 6, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ The guide groove is provided with a C-shaped protrusion (1821-1) and two flanges (1821-2), the pulley mounting plate (1811-1) is arranged between the two flanges (1821-2), and the end of the pulley mounting plate (1811-1) is located in the groove of the C-shaped protrusion (1821-1) to limit the pulley assembly (1812).

8. The construction machine cover according to claim 1, characterized in that: The door leaf (181) comprises a door leaf main body (1811) and a glass steel door plate (1813), the door leaf main body (1811) is a frame structure, and the glass steel door plate (1813) is fixedly installed on the door leaf main body (1811) through the fastener two (1815).

9. The construction machine cover according to claim 1, characterized in that: The main cover is provided with a quick-release cover door (13), the quick-release cover door (13) comprises a cover (4) door skin (12) and cover (4) door framework vertical plates, a plurality of cover (4) door framework vertical plates form cross stiffeners, round head turn locks (134) are arranged on the two sides of the quick-release cover door (13), and the main body framework (11) is fixed with lock tongue baffle plates matched with the round head turn locks (134).

10. The construction machine cover according to claim 9, characterized in that: The skin (12) is provided with an upper flange structure (121) at the position of the quick-release cover door (13), and the upper flange structure (121) is located on the inner side of the quick-release cover door (13) to limit the quick-release cover door (13).