Rear axle housing of mining dump truck with electric wheels and mining dump truck with electric wheels

Abstract

The utility model provides an electric wheel mining dump truck rear axle housing and an electric wheel mining dump truck, and relates to the technical field of electric wheel mining dump trucks, the electric wheel mining dump truck rear axle housing comprises a rear axle housing body and an access cover, the rear axle housing body is provided with an access hole, and the rear axle housing body is provided with a support ring at the edge of the access hole. A flitch plate surrounding the supporting ring is further attached to the rear axle housing body, the access cover comprises a reinforcing rib structure and an access cover body used for opening or closing the access opening, and the reinforcing rib structure is arranged on the access cover body. The size of the access hole can be designed to be larger so that a maintainer can enter and exit the rear axle housing body conveniently, and on the basis, the edge of the access hole is provided with a supporting ring and a flitch plate which are used for supporting the access hole, so that the structural strength near the access hole is enhanced. In addition, by arranging the reinforcing rib structure on the access cover body, the structural strength of the access cover body with the large size and area can be enhanced, and it is guaranteed that the access cover has enough structural strength when the access opening is closed.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric wheel mine dump truck technical field, specifically, relates to a kind of electric wheel mine dump truck rear axle housing and electric wheel mine dump truck. BACKGROUND

[0002] Electric wheel mine dump truck occupies very large proportion in the transportation of large open-pit mine, because it has the advantages of simple structure, reliable, strong load capacity, good maneuverability, low energy consumption etc. With the continuous increase of domestic market demand, the development of domestic self-owned mine dump truck is also rapidly promoted. In the operation process of electric wheel mine dump truck, the driving rear axle is the most critical force transmission and load bearing component, mainly composed of axle box (rear axle housing), electric wheel, suspension device, etc. Due to the harsh open-pit mine operating environment, the vehicle needs to run for a long time under overload, which brings severe challenges to the driving axle, so there is a higher requirement for the structural strength of the rear axle housing. In order to ensure its structural strength, the size of the access hole of the rear axle housing is usually designed to be small; however, due to the small opening of the access hole, it is not conducive for the maintenance personnel to enter and exit the rear axle housing to carry out internal structure maintenance work, greatly increasing the maintenance time and affecting the overall mine production efficiency. SUMMARY

[0003] The utility model aims at at least one of the above technical problems.

[0004] To solve the above problems, the utility model provides a kind of electric wheel mine dump truck rear axle housing, including rear axle housing body, support ring, paste plate and access cover, the rear axle housing body is provided with access hole, the support ring is arranged on the edge of the access hole of the rear axle housing body, the rear axle housing body is also pasted with the paste plate surrounding the support ring, the access cover includes reinforcing rib structure and access cover body for opening or closing the access hole, and the reinforcing rib structure is arranged on the access cover body.

[0005] The electric wheel mine dump truck rear axle housing provided by the utility model can be designed to be larger in size to facilitate the maintenance personnel to enter and exit the rear axle housing body, which is beneficial to the maintenance personnel to enter and exit the rear axle housing to carry out internal structure maintenance work, greatly reduces the maintenance time and improves the overall mine production efficiency. On the basis of the larger size of the access hole, the support ring for supporting the access hole is arranged on the edge of the access hole to improve the structural strength of the rear axle housing body at the access hole, and the paste plate surrounding the support ring and the access hole is further pasted on the rear axle housing body, to further strengthen the structural strength near the access hole. In addition, due to the larger size of the access hole, the size of the access cover body is also relatively large, and by arranging the reinforcing rib structure on the access cover body, the structural strength of the access cover body with larger size and area can be strengthened to ensure that the access cover has sufficient structural strength when closing the access hole.

[0006] Furthermore, the inspection cover also includes a hinge structure, and the inspection cover body is connected to the hinge structure; the inspection cover body is used to connect to the patch through the hinge structure to flip over and cover the support ring or flip over and expose the support ring; wherein, the size of the inspection cover body is larger than the end face size of the support ring.

[0007] Furthermore, the hinge structure includes two hinge rods, and two hinge supports are provided on the plate. One end of each of the two hinge rods is connected to the outer side of the inspection cover body, and the other end of each of the two hinge rods is hinged to the corresponding hinge support.

[0008] Furthermore, the inspection cover body has a symmetrical structure, and the two hinge rods are symmetrical about the line of symmetry of the inspection cover body; the hinge structure also includes a connecting rod, which connects the two hinge rods, and the length of the connecting rod is greater than the length of the hinge rod.

[0009] Furthermore, the inspection cover also includes a baffle plate. The inspection cover body has a heat dissipation vent, and the baffle plate is disposed on the upper side of the heat dissipation vent, and the baffle plate is set at an acute angle to the inspection cover body.

[0010] Furthermore, the inspection cover also includes a sealing ring, which is disposed on the inner side of the inspection cover body, and the inspection cover body is used to contact the support ring through the sealing ring.

[0011] Furthermore, the reinforcing rib structure includes a first reinforcing rib, a second reinforcing rib, a third reinforcing rib, and a fourth reinforcing rib that form a "well" shaped structure.

[0012] Furthermore, the inspection port is circular, and / or the support ring is made of high-strength alloy steel, and / or the inspection port is located at the rear middle position in the axial direction of the rear axle housing body.

[0013] Furthermore, the inspection cover also includes a door lock structure, which is disposed on the inspection cover body. The panel is provided with a door lock engagement structure, which is used to lock or unlock with the door lock engagement structure.

[0014] This utility model also provides an electric wheel mining dump truck, including the rear axle housing of the electric wheel mining dump truck as described above.

[0015] Since the technological improvements and beneficial effects of the electric wheel mining dump truck are at least the same as those of the rear axle housing of the electric wheel mining dump truck, the electric wheel mining dump truck will not be described in detail here. Attached Figure Description

[0016] Figure 1 The structure schematic diagram of the maintenance cover of the rear axle housing of the electric wheel mine self-unloading vehicle according to the embodiment of the utility model is closed;

[0017] Figure 2 The structure schematic diagram of the maintenance cover of the rear axle housing of the electric wheel mine self-unloading vehicle according to the embodiment of the utility model is opened;

[0018] Figure 3 The structure schematic diagram of the maintenance cover of the rear axle housing of the electric wheel mine self-unloading vehicle according to the embodiment of the utility model is opened;

[0019] Figure 4 The structure schematic diagram of the maintenance cover of the rear axle housing of the electric wheel mine self-unloading vehicle according to the embodiment of the utility model is opened;

[0020] Mark explanation:

[0021] 1, rear axle housing body;11, maintenance opening;21, support ring;22, paste plate;23, hinge support;24, door lock matching structure;3, maintenance cover;31, maintenance cover body;311, heat dissipation opening;32, hinge structure;321, hinge rod;322, connecting rod;33, shielding plate;34, sealing ring;35, reinforcing rib structure;351, first reinforcing rib;352, second reinforcing rib;353, third reinforcing rib;354, fourth reinforcing rib;36, door lock structure. Specific implementation

[0022] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below with reference to the drawings.

[0023] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "upper", "lower" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0024] The Z axis in the drawing represents the vertical direction, that is, the up-down position, and the positive direction of the Z axis represents the upper side, and the negative direction of the Z axis represents the lower side;The Y axis in the drawing represents the left-right position, and the positive direction of the Y axis represents the left side, and the negative direction of the Y axis represents the right side;The X axis in the drawing represents the longitudinal direction, that is, the front-rear position, and the positive direction of the X axis represents the front side, and the negative direction of the X axis represents the rear side. It should be noted that the meanings of the aforementioned Z axis, Y axis and X axis are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0025] The term "include" and variations thereof, as used herein, is meant to be open-ended and permit the inclusion of any number of additives, adjuvants, materials, solvents, or substances, etc., whether specifically recited or not; the term "based on" means "based, at least in part, on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional in some embodiments". Related definitions are given throughout the detailed description. It is to be noted that the concepts mentioned in the present application are illustrative and not restrictive, and those skilled in the art should understand that "one" "multiple" modification is illustrative and not restrictive, and those skilled in the art should understand that "one" or "multiple" modification is illustrative and not restrictive, unless otherwise explicitly stated in the context.

[0026] It is to be noted that the "one" "multiple" modification mentioned in the present application is illustrative and not restrictive, and those skilled in the art should understand that "one" or "multiple" modification is illustrative and not restrictive, unless otherwise explicitly stated in the context.

[0027] Referring to Figures 1-4 The rear axle housing body 1 of the electric wheel mine dump truck according to the present application comprises a rear axle housing body 1, a support ring 21, a paste plate 22 and a maintenance cover 3, the rear axle housing body 1 is provided with a maintenance opening 11, the support ring 21 is arranged at the edge of the maintenance opening 11, the paste plate 22 surrounding the support ring 21 is further arranged on the rear axle housing body 1, and the maintenance cover 3 comprises a reinforcing rib structure 35 and a maintenance cover body 31 for opening or closing the maintenance opening 11, and the reinforcing rib structure 35 is arranged on the maintenance cover body 31.

[0028] The rear axle housing body of the electric wheel mine dump truck according to the present application, the size of the maintenance opening 11 can be designed to be larger, so that the maintenance personnel can enter and exit the rear axle housing body 1, which is beneficial to the maintenance personnel to enter and exit the rear axle housing body to perform internal structure maintenance work, greatly reducing the maintenance time and improving the overall mine production efficiency. On the basis of the larger size of the maintenance opening 11, the support ring 21 for supporting the maintenance opening 11 is arranged at the edge of the maintenance opening 11 to improve the structural strength of the rear axle housing body 1 at the maintenance opening 11, and the paste plate 22 surrounding the support ring 21 and the maintenance opening 11 is further arranged on the rear axle housing body 1, thereby further strengthening the structural strength near the maintenance opening 11. In addition, due to the larger size of the maintenance opening 11, the size of the maintenance cover body 31 is also relatively large, and by arranging the reinforcing rib structure 35 on the maintenance cover body 31, the structural strength of the maintenance cover body 31 with a larger size area can be strengthened, so that the maintenance cover 3 has sufficient structural strength when closing the maintenance opening 11.

[0029] Referring to Figures 1-3Optionally, the maintenance cover 3 further comprises a hinge structure 32, and the maintenance cover body 31 is connected with the hinge structure 32; the maintenance cover body 31 is used to be connected with the patch plate 22 through the hinge structure 32 to flip to cover or expose the support ring 21; wherein the size of the maintenance cover body 31 is slightly larger than the size of the end surface of the support ring 21.

[0030] In the embodiment, the maintenance cover body 31 is hinged with the patch plate 22 through the hinge structure 32 to open or close the maintenance opening 11 in a flipping manner. When the maintenance cover body 31 covers the support ring 21 in a flipping manner, the maintenance opening 11 is closed at the same time; when the maintenance cover body 31 exposes the support ring 21 in a flipping manner, the maintenance opening 11 is opened at the same time.

[0031] It can be understood that the support ring 21 has a certain axial length, and the maintenance cover body 31 covers the axial end surface of the support ring 21. In order to ensure that the support ring 21 can be covered by the maintenance cover body 31, the size of the maintenance cover body 31 is slightly larger than the size of the end surface of the support ring 21. The end surface of the support ring 21 is a flat annular surface.

[0032] In the embodiment, the patch plate 22 is equivalent to thickening the thickness of the rear axle housing body 1 at this position, and the end of the hinge away from the maintenance cover body 31 is connected with the patch plate 22 to improve the stability of the hinge installation.

[0033] Referring to Figures 1-3 Optionally, the hinge structure 32 comprises two hinge rods 321, the patch plate 22 is provided with two hinge supports 23, one end of each of the two hinge rods 321 is connected with the outer side surface of the maintenance cover body 31, and the other end of each of the two hinge rods 321 is hinged with the corresponding hinge support 23.

[0034] In the embodiment, the hinge structure 32 comprises two hinge units, each hinge unit comprises a hinge rod 321, one end of the hinge rod 321 is connected with the outer side surface of the maintenance cover body 31, and the other end is hinged with the corresponding hinge support 23 of the patch plate 22. The hinge structure 32 is arranged on the outer side of the maintenance cover body 31, which is convenient for installation and does not affect the closing of the maintenance opening 11 by the maintenance cover body 31. The maintenance cover body 31 provides a flipping path through the two hinge units, which has high stability.

[0035] Referring to Figures 1-3Optionally, the inspection cover body 31 has a symmetrical structure, and the two hinge rods 321 are symmetrical about the line of symmetry of the inspection cover body 31; the hinge structure 32 further includes a connecting rod 322, which is connected between the two hinge rods 321, and the length of the connecting rod 322 is greater than the length of the hinge rod 321.

[0036] In this embodiment, the inspection cover body 31 has a symmetrical structure, such as a circular or square shape. For a circular inspection cover body 31, any diameter is a line of symmetry; for a square inspection cover body 31, the diagonals are lines of symmetry, and the line connecting the midpoints of opposite sides is also a line of symmetry. The symmetrical design of the two hinge rods 321 about the lines of symmetry of the inspection cover body 31 ensures that the constraint force exerted by the hinge structure 32 when the inspection cover 31 is flipped is symmetrical, making the flipping more stable.

[0037] Furthermore, a connecting rod 322 connects the two hinge rods 321, linking the two hinge rods 321 together. Under the action of the connecting rod 322, the two hinge units form an "I"-shaped hinge structure 32, ensuring the consistency of movement between the two hinge units and the smoothness of opening or closing the inspection cover 3. The length of the connecting rod 322 is greater than the length of the hinge rods 321, meaning the connection points between the two hinge rods 321 and the inspection cover body 31 are relatively far apart, preventing the stress on the inspection cover body 31 at the hinge rod 321 connection points from becoming too concentrated.

[0038] See Figure 1 and Figure 3 Optionally, the inspection cover 3 further includes a baffle plate 33. The inspection cover body 31 has a heat dissipation vent 311. The baffle plate 33 is disposed on the upper side of the heat dissipation vent 311, and the baffle plate 33 is set at an acute angle to the inspection cover body 31.

[0039] In the normal working state of the electric wheel mining dump truck, the inspection cover body 31 is closed. In this embodiment, the inspection cover body 31 is also provided with heat dissipation vents 311, so that the internal structure of the rear axle housing body 1 can be cooled through the heat dissipation vents 311. The heat dissipation vents 311 can be elongated, and multiple heat dissipation vents 311 are arranged at intervals along the extension direction perpendicular to the heat dissipation vents 311, thereby improving the heat dissipation effect. Moreover, the opening of the heat dissipation vents 311 will not reduce the structural strength of the inspection cover body 31 too much. In particular, the inspection cover body 31 is also provided with reinforcing rib structures 35, so that even with the opening of the heat dissipation vents 311, the inspection cover body 31 can maintain a certain structural strength.

[0040] In this embodiment, as Figure 3As shown, the heat dissipation vent 311 is a narrow, elongated opening, preventing larger impurities from entering the rear axle housing body 1. Furthermore, a baffle plate 33 is provided on the upper side of each heat dissipation vent 311, forming an acute angle with the inspection cover body 31. This baffle plate 33 ensures that debris such as coal slag cannot fall into the interior of the rear axle housing body 1 through the heat dissipation vent 311. The elongated rectangular heat dissipation vent 311 also has rounded corners to prevent stress concentration at the corners.

[0041] See Figure 2 and Figure 4 Optionally, the inspection cover 3 further includes a sealing ring 34, which is disposed on the inner side of the inspection cover body 31, and the inspection cover body 31 is used to contact the support ring 21 through the sealing ring 34.

[0042] In this embodiment, a sealing ring 34 is provided on the inner side of the inspection cover body 31 near the edge. The sealing ring 34 is, for example, a shock-absorbing rubber strip, which can be attached and fixed to the inspection cover body 31. When the inspection opening 11 is closed, the sealing ring 34 contacts the end face of the support ring 21, thus sealing the opening and preventing dirt such as coal slag and dust from falling into the rear axle housing body 1. Moreover, the setting of the shock-absorbing rubber strip can also prevent the inspection cover 3 from colliding with the support ring 21 and generating noise during vehicle movement.

[0043] See Figure 2 and Figure 4 Optionally, the reinforcing rib structure 35 includes a first reinforcing rib 351, a second reinforcing rib 352, a third reinforcing rib 353, and a fourth reinforcing rib 354 forming a "well" shaped structure.

[0044] In this embodiment, the reinforcing rib structure 35 is disposed on the inner side of the inspection cover body 31. This avoids inconvenience in the placement of the outer side shielding plate 33 of the inspection cover 31 and does not affect the airflow of the heat dissipation vent 311. The reinforcing rib structure 35 is specifically in the shape of a "well" and a portion of the heat dissipation vents 311 are located inside the "well" shaped structure, ensuring sufficient strength of the inspection cover body 31.

[0045] Specifically, the "well"-shaped reinforcing rib structure 35 may include a first reinforcing rib 351, a second reinforcing rib 352, a third reinforcing rib 353, and a fourth reinforcing rib 354. The first reinforcing rib 351 and the second reinforcing rib 352 are arranged opposite each other, one above the other, and the third reinforcing rib 353 and the fourth reinforcing rib 354 are arranged opposite each other, one to the left and one to the right.

[0046] See Figures 1-4Optionally, the access hole 11 is circular, and / or the support ring 21 is made of high-strength alloy steel, and / or the access hole 11 is located at the middle of the rear part in the axial direction of the rear axle housing body 1.

[0047] In this embodiment, the access hole 11 is circular, and correspondingly, the support ring 21 is also circular. Compared with the rectangular access hole 11, the circular access hole 11 and the support ring 21 designed in this embodiment can avoid the problem of stress concentration at the sharp point of the rectangular access hole 11. The support ring 21 is made of high-strength alloy steel and is welded and fixed with the rear axle housing body 1 to ensure the structural strength at the access hole 11. The access hole 11 is located at the center of the rear part of the entire rear axle housing, which is exactly in the middle of the two electric wheels, facilitating the maintenance personnel to maintain the parts of the two electric wheels. In addition, the lower end of the support ring 21 is less than 1m away from the ground, which facilitates the maintenance personnel to enter and exit the interior of the rear axle housing without the aid of auxiliary tools.

[0048] Referring to Figure 1 Optionally, the access cover 3 further comprises a door lock structure 36, the door lock structure 36 is arranged on the access cover body 31, and the door lock cooperation structure 24 is arranged on the paste plate 22, and the door lock structure 36 is used for locking cooperation or unlocking separation with the door lock cooperation structure 24.

[0049] In this embodiment, the access cover body 31 is locked by the locking cooperation of the door lock structure 36 and the door lock cooperation structure 24, so as to lock the access cover 3 and prevent the access cover 3 from being accidentally opened during the operation of the vehicle.

[0050] Another embodiment of the utility model provides a mine electric wheel self-unloading vehicle, which comprises the mine electric wheel self-unloading vehicle rear axle housing.

[0051] Since the technical improvement and beneficial effect of the mine electric wheel self-unloading vehicle are at least the same as those of the mine electric wheel self-unloading vehicle rear axle housing, the mine electric wheel self-unloading vehicle will not be described again.

[0052] The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features.

[0053] Although the utility model discloses as above, the protection scope of the utility model is not limited to this. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will all fall within the protection scope of the utility model.

Claims

1. A rear axle housing for an electric wheel mining dump truck, characterized in that, The rear axle housing includes a rear axle housing body (1), a support ring (21), a panel (22), and a maintenance cover (3). The rear axle housing body (1) is provided with a maintenance port (11). The support ring (21) is provided at the edge of the maintenance port (11) on the rear axle housing body (1). The panel (22) surrounding the support ring (21) is also affixed to the rear axle housing body (1). The maintenance cover (3) includes a reinforcing rib structure (35) and a maintenance cover body (31) for opening or closing the maintenance port (11). The reinforcing rib structure (35) is provided on the maintenance cover body (31).

2. The rear axle housing of the electric wheel mining dump truck according to claim 1, characterized in that, The inspection cover (3) further includes a hinge structure (32), and the inspection cover body (31) is connected to the hinge structure (32); the inspection cover body (31) is used to connect to the patch (22) through the hinge structure (32) to flip over and cover the support ring (21) or flip over and expose the support ring (21); wherein, the size of the inspection cover body (31) is larger than the end face size of the support ring (21).

3. The rear axle housing of the electric wheel mining dump truck according to claim 2, characterized in that, The hinge structure (32) includes two hinge rods (321), and two hinge supports (23) are provided on the plate (22). One end of each of the two hinge rods (321) is connected to the outer side of the inspection cover body (31), and the other end of each of the two hinge rods (321) is hinged to the corresponding hinge support (23).

4. The rear axle housing of the electric wheel mining dump truck according to claim 3, characterized in that, The inspection cover body (31) has a symmetrical structure, and the two hinge rods (321) are symmetrical about the line of symmetry of the inspection cover body (31); the hinge structure (32) also includes a connecting rod (322), which is connected between the two hinge rods (321), and the length of the connecting rod (322) is greater than the length of the hinge rod (321).

5. The rear axle housing of the electric wheel mining dump truck according to claim 2, characterized in that, The inspection cover (3) also includes a shield (33). The inspection cover body (31) has a heat dissipation vent (311). The shield (33) is located on the upper side of the heat dissipation vent (311), and the shield (33) is set at an acute angle to the inspection cover body (31).

6. The rear axle housing of the electric wheel mining dump truck according to claim 2, characterized in that, The inspection cover (3) also includes a sealing ring (34), which is disposed on the inner side of the inspection cover body (31) and the inspection cover body (31) is used to contact the support ring (21) through the sealing ring (34).

7. The rear axle housing of the electric wheel mining dump truck according to any one of claims 1-6, characterized in that, The reinforcing rib structure (35) includes a first reinforcing rib (351), a second reinforcing rib (352), a third reinforcing rib (353), and a fourth reinforcing rib (354) that form a "well" shaped structure.

8. The rear axle housing of the electric wheel mining dump truck according to any one of claims 1-6, characterized in that, The inspection port (11) is circular, and / or the support ring (21) is made of high-strength alloy steel, and / or the inspection port is located at the rear middle position of the rear axle housing body (1) in the axial direction.

9. The rear axle housing of the electric wheel mining dump truck according to any one of claims 2-6, characterized in that, The inspection cover (3) also includes a door lock structure (36), which is disposed on the inspection cover body (31). The panel (22) is provided with a door lock engagement structure (24), which is used to lock or unlock with the door lock engagement structure (24).

10. An electric wheel mining dump truck, characterized in that, Includes the rear axle housing of the electric wheel mining dump truck as described in any one of claims 1-9.

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