Electric wheel rear axle box maintenance cover

Abstract

The utility model discloses an electric wheel rear axle box maintenance cover, including maintenance cover subassembly, hinged mechanism, set up maintaining opening on rear axle box, maintenance cover subassembly includes apron, sets up the inner baffle ring and outer baffle ring of apron inboard, and the inner baffle ring and outer baffle ring are sequentially arranged from the center of apron to the outer edge, and the wallboard of maintaining opening is inserted between the inner baffle ring and outer baffle ring, and one end of hinged mechanism is fixedly connected with apron outside, and the other end is fixedly connected with the rear axle box outer wall at maintaining opening, and apron is opened and closed along the horizontal direction rotation through hinged mechanism. Through the collaborative design of double baffle ring insertion type sealing structure and horizontal rotation hinge, improve the dynamic sealing performance and the ability of resisting foreign matter invasion of rear axle box maintaining opening, improve the opening and closing operation efficiency and structural stability of large maintenance cover, effectively adapt to the extreme vibration working condition of mining area and reduce the maintenance complexity, can satisfy the requirement of high frequency maintenance convenience, precision component protection reliability and heavy equipment structure durability of mine electric wheel rear axle box.

Description

Technical Field

[0001] This utility model relates to an inspection cover for the rear axle box of an electric wheel, belonging to the technical field of mechanical engineering. Background Technology

[0002] In the field of mining transportation equipment, electric wheel mining dump trucks are driven by an electric transmission system, with the core power unit being the electric wheel assemblies installed on both sides of the rear axle box. Because these vehicles need to adapt to extreme heavy-load conditions, the electric wheels and the matching rear axle box have significantly larger structural dimensions than conventional axles to meet the requirements of high torque transmission. In addition to the transmission mechanism, the rear axle box also integrates critical systems such as high-voltage power cables, low-voltage control harnesses, hydraulic braking lines, and cooling circulation lines. This multi-functional unit layout further increases the internal space and overall diameter of the box. To ensure equipment maintainability, a maintenance port is usually opened on the rear side of the rear axle box for personnel to enter and perform fault diagnosis and component replacement. However, under the complex road conditions in mining areas, debris such as gravel and dust splashed during vehicle operation can easily enter the box through the open maintenance port, causing damage to precision electrical components or abnormal wear of the transmission system. Summary of the Invention

[0003] Purpose of the invention: To solve the above-mentioned technical problems, this utility model provides an inspection cover for the rear axle box of an electric wheel. The device adopts an inspection cover assembly including an inner retaining ring and an outer retaining ring, and is equipped with a hinge mechanism for horizontal rotation opening and closing, which solves the problem that foreign objects such as gravel and dust can easily enter the interior of the rear axle box from the open working condition under harsh working conditions in mining areas.

[0004] Technical solution: A maintenance cover for an electric wheel rear axle housing includes a maintenance cover assembly, a hinge mechanism, and a maintenance opening on the rear axle housing. The maintenance cover assembly includes a cover plate, an inner retaining ring and an outer retaining ring disposed on the inner side of the cover plate. The inner and outer retaining rings are arranged sequentially from the center of the cover plate to the outer edge. The wall panel of the maintenance opening is inserted between the inner and outer retaining rings. One end of the hinge mechanism is fixedly connected to the outer side of the cover plate, and the other end is fixedly connected to the outer wall of the rear axle housing at the maintenance opening. The cover plate is opened and closed by rotating horizontally through the hinge mechanism.

[0005] This utility model, by setting up a maintenance cover assembly including an inner and outer retaining ring, and cooperating with a horizontally rotating hinge mechanism for opening and closing, allows the maintenance port wall plate to be inserted between the two retaining rings to form a physical sealing barrier. This solves the problem that foreign objects such as gravel and dust can easily enter the rear axle box from the open working condition under harsh working conditions in mining areas, realizes the rapid opening and closing operation of the maintenance cover, and improves the protection reliability of the precision electrical components and transmission system in the rear axle box.

[0006] In a preferred embodiment, to achieve better sealing, foam is provided between the inner and outer retaining rings, and after the inspection cover assembly is closed, the wall panel of the maintenance port is inserted between the inner and outer retaining rings and abuts against the foam.

[0007] By adding foam between the inner and outer retaining rings, the elastic sealing effect between the maintenance port wall plate and the retaining ring is improved, effectively preventing the intrusion of fine dust and enhancing multiple sealing protections.

[0008] In a preferred embodiment, in order to achieve stable support for the large maintenance cover, two sets of hinge mechanisms are symmetrically arranged along the horizontal center line of the cover plate, and the hinge mechanism also includes a column fixedly installed on the outer side of the cover plate, with the two ends of the column being fixedly connected to the two sets of hinge mechanisms respectively.

[0009] By symmetrically arranging two sets of hinge mechanisms along the horizontal centerline of the cover plate and connecting them with rigid columns, the overall structural strength of the cover plate and the balance of the opening and closing process are improved, avoiding deformation caused by single-point force.

[0010] In a preferred embodiment, in order to achieve modular installation and maintenance of the hinge mechanism, the hinge mechanism includes a first connecting plate, a second connecting plate, and a hinge part. The second connecting plate is fixedly connected to the outer wall of the rear axle box at the maintenance port. One end of the first connecting plate is fixedly connected to the cover plate, and the other end is hinged to the second connecting plate through the hinge part.

[0011] By adopting a split design for the first connecting plate, the second connecting plate, and the hinge, the disassembly and replacement convenience of the hinge mechanism are improved, and maintenance costs are reduced.

[0012] In a preferred embodiment, in order to optimize stress and simplify the structure, the first connecting plate includes a first connecting part and a second connecting part. The first connecting part is fixedly connected to the cover plate, one end of the second connecting part is integrally connected to the first connecting part, and the other end is hinged to the second connecting plate through a hinge part.

[0013] By designing the first connecting plate as an integral first connecting part and second connecting part, the continuity of the hinge force transmission path is improved and the risk of connection loosening is reduced.

[0014] In a preferred embodiment, in order to achieve precise positioning and temporary fixation of the opening and closing angle of the inspection cover, the second connecting part is provided with a first positioning hole, and the second connecting plate is provided with a second positioning hole. The first positioning hole and the second positioning hole are located on the same rotation radius with the hinge part as the rotation center, and the first positioning hole and the second positioning hole are detachably connected through the positioning part.

[0015] By providing positioning holes with the same rotation radius corresponding to the second connecting part and the second connecting plate, and in conjunction with the detachable positioning part, the stability and safety of the cover plate in specific opening positions, such as maintenance angles, are improved.

[0016] Preferably, to avoid interference and wear between the articulation mechanism and the outer wall of the rear axle housing, there is a gap between the end of the second connecting part near the articulation part and the outer wall of the rear axle housing. By leaving a gap between the articulation end of the second connecting part and the housing wall, the freedom of hinge movement is improved, adapting to vehicle vibration conditions and extending the service life of the mechanism.

[0017] In a preferred embodiment, to achieve reliable locking and shockproof release of the hinge, the hinge includes a bolt, a lock nut, and a washer. The washer is fitted onto the bolt, and the bolt passes through both the second connecting part and the second connecting plate before being connected to the lock nut. The two end faces of the washer abut against the second connecting part and the second connecting plate, respectively.

[0018] By adopting a hinge structure consisting of bolts, lock nuts, and washers, the connection node's resistance to loosening under continuous vibration in the mining area is improved.

[0019] In a preferred embodiment, to achieve rapid locking of the first and second positioning holes, the positioning part includes a pin and a cotter pin. The pin includes a pin head, a pin shank, and a through hole extending radially through the pin shank. After the pin passes through the first and second positioning holes, the cotter pin is inserted into the through hole to position the pin. By using a pin and a cotter pin as the positioning part, operational convenience and positioning reliability are improved.

[0020] Beneficial effects: This utility model improves the dynamic sealing performance and resistance to foreign object intrusion of the rear axle box maintenance port through the synergistic design of the double-ring plug-in sealing structure and the horizontal rotating hinge; it improves the opening and closing efficiency and structural stability of the large maintenance cover; at the same time, it effectively adapts to the extreme vibration conditions in the mining area and reduces the complexity of maintenance by utilizing the modular hinge mechanism and elastic foam; it can meet the core requirements of mine electric wheel rear axle boxes for high-frequency maintenance convenience, precision component protection reliability and heavy equipment structural durability. Attached Figure Description

[0021] 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.

[0022] Figure 1 This is a schematic diagram of the overall structure of the inspection cover of this utility model;

[0023] Figure 2 This is a schematic diagram showing the inspection cover of this utility model in the open state;

[0024] Figure 3 This is a sectional view of the inspection cover of this utility model;

[0025] Figure 4 This is a structural diagram of the hinge part of this utility model;

[0026] Figure 5 This is a structural diagram of the positioning part of this utility model. Detailed Implementation

[0027] 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.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] like Figures 1-3 As shown, an inspection cover for an electric wheel rear axle housing includes an inspection cover assembly 1, a hinge mechanism 2, and a maintenance opening 4 on the rear axle housing 3. The inspection cover assembly 1 includes a cover plate 11, an inner retaining ring 12 and an outer retaining ring 13 disposed on the inner side of the cover plate 11. The inner retaining ring 12 and the outer retaining ring 13 are arranged sequentially from the center of the cover plate 11 to the outer edge. The wall panel of the maintenance opening 4 is inserted between the inner retaining ring 12 and the outer retaining ring 13. One end of the hinge mechanism 2 is fixedly connected to the outer side of the cover plate 11, and the other end is fixedly connected to the outer wall of the rear axle housing 3 at the maintenance opening 4. The cover plate 11 is opened and closed by rotating horizontally through the hinge mechanism 2.

[0031] By setting up an inspection cover assembly 1 containing an inner retaining ring 12 and an outer retaining ring 13, and cooperating with a hinge mechanism 2 that allows horizontal rotation for opening and closing, the wall panel of the maintenance port 4 can be inserted between the two retaining rings to form a physical sealing barrier. This solves the problem that foreign objects such as gravel and dust can easily enter the interior of the rear axle box 3 from the open working conditions under harsh mining conditions, realizes the rapid opening and closing operation of the inspection cover, and improves the protection reliability of the precision electrical components and transmission system inside the rear axle box 3.

[0032] To achieve better sealing, foam 14 is provided between the inner retaining ring 12 and the outer retaining ring 13. After the inspection cover assembly 1 is closed, the wall panel of the maintenance port 4 is inserted between the inner retaining ring 12 and the outer retaining ring 13 and abuts against the foam 14.

[0033] By adding foam 14 between the inner retaining ring 12 and the outer retaining ring 13, the elastic sealing effect between the maintenance port 4 wall panel and the retaining ring is improved, effectively preventing the intrusion of fine dust and enhancing multiple sealing protections. In order to prevent the foam 14 from falling off, in this embodiment, the foam 14 has adhesive backing and is attached to the cover plate 11 between the inner retaining ring 12 and the outer retaining ring 13.

[0034] To achieve stable support for the large maintenance cover, two sets of hinge mechanisms 2 are symmetrically arranged along the horizontal center line of the cover plate 11. The hinge mechanism 2 also includes a column 5 fixedly installed on the outer side of the cover plate 11. The two ends of the column 5 are fixedly connected to the two sets of hinge mechanisms 2 respectively.

[0035] By symmetrically arranging two sets of hinge mechanisms 2 along the horizontal center line of the cover plate 11 and connecting them with rigid columns 5, the overall structural strength of the cover plate 11 and the balance of the opening and closing process are improved, avoiding deformation caused by single-point force.

[0036] To enable modular installation and maintenance of the hinge mechanism 2, the hinge mechanism 2 includes a first connecting plate 21, a second connecting plate 22, and a hinge part 23. The second connecting plate 22 is fixedly connected to the outer wall of the rear axle box 3 at the maintenance port 4. One end of the first connecting plate 21 is fixedly connected to the cover plate 11, and the other end is hinged to the second connecting plate 22 through the hinge part 23.

[0037] By adopting a split design of the first connecting plate 21, the second connecting plate 22, and the hinge part 23, the disassembly and replacement convenience of the hinge mechanism 2 are improved, and maintenance costs are reduced.

[0038] In order to optimize stress and simplify the structure, the first connecting plate 21 includes a first connecting part 211 and a second connecting part 212. The first connecting part 211 is fixedly connected to the cover plate 11. One end of the second connecting part 212 is integrally connected to the first connecting part 211, and the other end is hinged to the second connecting plate 22 through the hinge part 23.

[0039] By designing the first connecting plate 21 as an integral first connecting part 211 (fixed to the cover plate 11) and a second connecting part 212 (hinged to the second connecting plate 22), the continuity of the hinge force transmission path is improved and the risk of connection loosening is reduced.

[0040] In order to achieve precise positioning and temporary fixation of the opening and closing angle of the inspection cover, the second connecting part 212 is provided with a first positioning hole 2121, and the second connecting plate 22 is provided with a second positioning hole 221. The first positioning hole 2121 and the second positioning hole 221 are located on the same rotation radius with the hinge part 23 as the rotation center. The first positioning hole 2121 and the second positioning hole 221 are detachably connected through the positioning part 6.

[0041] By providing positioning holes with the same rotation radius corresponding to the second connecting part 212 and the second connecting plate 22, and cooperating with the detachable positioning part 6, the stability and safety of the cover plate 11 in a specific opening position, such as the maintenance angle, are improved.

[0042] To avoid interference and wear between the articulation mechanism 2 and the outer wall of the rear axle housing 3, a gap is provided between the end of the second connecting part 212 near the articulation part 23 and the outer wall of the rear axle housing 3. By leaving a gap between the articulation end of the second connecting part 212 and the housing wall, the freedom of hinge movement is improved, adapting to vehicle vibration conditions and extending the service life of the mechanism.

[0043] like Figure 4 As shown, to achieve reliable locking and shock-resistant disengagement of the hinge 23, the hinge 23 includes a bolt 231, a lock nut 232, and a washer 233. The washer 233 is fitted onto the bolt 231. The bolt 231 passes through both the second connecting part 212 and the second connecting plate 22 before connecting to the lock nut 232. The two end faces of the washer 233 abut against the second connecting part 212 and the second connecting plate 22, respectively. By adopting the hinge 23 structure composed of bolt 231, lock nut 232, and washer 233, the anti-loosening ability of the connection node in the continuous vibration environment of the mining area is improved. Example 1

[0044] like Figure 5 As shown, to achieve rapid locking of the first positioning hole 2121 and the second positioning hole 221, the positioning part 6 includes a pin 61 and a cotter pin 62. The pin 61 includes a pin head 611, a pin shank 612, and a through hole 613 that radially penetrates the pin shank 612. After the pin 61 passes through the first positioning hole 2121 and the second positioning hole 221, the cotter pin 62 is inserted into the through hole 613 to position the pin 61. By using the pin 61 and the cotter pin 62 as the positioning part 6, the ease of operation and positioning reliability are improved. Example 2

[0045] In order to securely lock the inspection cover in the closed state, a locking mechanism is provided between the cover plate 11 and the outer wall of the rear axle box 3 at the maintenance port 4 in this embodiment. That is, the inspection cover is securely locked in the closed state by inserting a lock seat and a handle and locking it with a padlock. Example 3

[0046] A handrail 8 is provided on the outer wall of the rear axle box 3 above the maintenance port 4 to facilitate maintenance personnel to enter the maintenance port 4.

[0047] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0048] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A maintenance cover for an electric wheel rear axle housing, characterized in that: The system includes an inspection cover assembly (1), a hinge mechanism (2), and a maintenance port (4) on the rear axle housing (3). The inspection cover assembly (1) includes a cover plate (11), an inner retaining ring (12) and an outer retaining ring (13) disposed on the inner side of the cover plate (11). The inner retaining ring (12) and the outer retaining ring (13) are arranged sequentially from the center of the cover plate (11) to the outer edge. The wall panel of the maintenance port (4) is inserted between the inner retaining ring (12) and the outer retaining ring (13). One end of the hinge mechanism (2) is fixedly connected to the outer side of the cover plate (11), and the other end is fixedly connected to the outer wall of the rear axle housing (3) at the maintenance port (4). The cover plate (11) is opened and closed by rotating in the horizontal direction through the hinge mechanism (2).

2. The electric wheel rear axle box inspection cover according to claim 1, characterized in that: Foam (14) is provided between the inner retaining ring (12) and the outer retaining ring (13). After the inspection cover assembly (1) is closed, the wall panel of the maintenance port (4) is inserted between the inner retaining ring (12) and the outer retaining ring (13) and abuts against the foam (14).

3. The electric wheel rear axle box inspection cover according to claim 1, characterized in that: The hinge mechanism (2) is symmetrically arranged in two sets along the horizontal center line of the cover plate (11), and also includes a column (5) fixedly installed on the outer side of the cover plate (11). The two ends of the column (5) are respectively fixedly connected to the two sets of hinge mechanisms (2).

4. The electric wheel rear axle box inspection cover according to claim 3, characterized in that: The hinge mechanism (2) includes a first connecting plate (21), a second connecting plate (22), and a hinge part (23). The second connecting plate (22) is fixedly connected to the outer wall of the rear axle box (3) at the maintenance port (4). One end of the first connecting plate (21) is fixedly connected to the cover plate (11), and the other end is hinged to the second connecting plate (22) through the hinge part (23).

5. The electric wheel rear axle box inspection cover according to claim 4, characterized in that: The first connecting plate (21) includes a first connecting part (211) and a second connecting part (212). The first connecting part (211) is fixedly connected to the cover plate (11). One end of the second connecting part (212) is integrally connected to the first connecting part (211), and the other end is hinged to the second connecting plate (22) through a hinge part (23).

6. The electric wheel rear axle box inspection cover according to claim 5, characterized in that: The second connecting part (212) is provided with a first positioning hole (2121), and the second connecting plate (22) is provided with a second positioning hole (221). The first positioning hole (2121) and the second positioning hole (221) are on the same rotation radius with the hinge part (23) as the rotation center. The first positioning hole (2121) and the second positioning hole (221) are detachably connected through the positioning part (6).

7. The electric wheel rear axle box inspection cover according to claim 5, characterized in that: There is a gap between the end of the second connecting part (212) near the hinge part (23) and the outer wall of the rear axle box (3).

8. The electric wheel rear axle box inspection cover according to claim 6 or 7, characterized in that: The hinge part (23) includes a bolt (231), a lock nut (232), and a washer (233). The washer (233) is sleeved on the bolt (231). The bolt (231) passes through the second connecting part (212) and the second connecting plate (22) and is connected to the lock nut (232). The two ends of the washer (233) abut against the second connecting part (212) and the second connecting plate (22) respectively.

9. The electric wheel rear axle box inspection cover according to claim 6, characterized in that: The positioning part (6) includes a pin (61) and a cotter pin (62). The pin (61) includes a pin head (611), a pin shank (612), and a through hole (613) that radially penetrates the pin shank (612). After the pin (61) passes through the first positioning hole (2121) and the second positioning hole (221), the cotter pin (62) is inserted into the through hole (613) to position the pin (61).

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