Axle housing of drive axle of special mining vehicle

Abstract

The utility model provides a special mining vehicle drive axle housing which comprises an axle housing body, the axle housing body is of a structure formed by rolling a steel plate, shaft head mounting flanges are welded to the two ends of the axle housing body, and the shaft head mounting flanges and shaft heads are positioned through spigots and axially fixed through threaded fasteners. A plurality of axle housing annular ribs are arranged on the inner wall of the axle housing body in parallel in the circumferential direction of the axle housing body, and axle housing longitudinal ribs are arranged on the inner wall of the axle housing body in the axial direction of the axle housing body. The defects that in a tailor-welded structure or a cast structure in the prior art, an axle housing is large in overall mass, the manufacturing process is relatively complex, and the bearing capacity of a shaft head is insufficient can be overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of special mining vehicle drive axles, in particular to a special mining vehicle drive axle housing. Background Art

[0002] At present, heavy-duty mining dump trucks are widely used in major transportation tasks such as open-pit mining, construction projects, and traffic construction because of their large load capacity, high transportation efficiency, and good economy. In general, mining dump trucks are divided into two categories according to the drive form: mechanical transmission and electric transmission mining trucks. For mining trucks with a load capacity of more than 100 tons, the traditional mechanical transmission system is complex in design, and its large size and high quality also make it difficult to manufacture. Therefore, electric wheel mining dump trucks are widely used, and the bridge housing is its main load-bearing part. Its structural design and performance directly affect the overall performance and reliability of the vehicle. The drive axle used in existing special mining vehicles mostly has a bridge housing of a welded structure or a cast structure. It has the disadvantages of a large overall mass of the bridge housing, a relatively complex manufacturing process, and insufficient bearing capacity of the axle head. It is difficult to meet the harsh working conditions of mining dump trucks and the economic benefits of enterprises. Utility Model Content

[0003] Therefore, the utility model provides a special mining vehicle drive axle housing, which can overcome the defects of the welded structure or cast structure in the prior art, such as large overall mass of the bridge housing, relatively complex manufacturing process, and insufficient bearing capacity of the axle head.

[0004] In order to solve the above problems, the utility model provides a special mining vehicle drive axle bridge housing, including a bridge housing body, the bridge housing body is a steel plate rolled molding structure, shaft head mounting flanges are welded at both ends of the bridge housing body, the shaft head mounting flange and the shaft head are positioned by a stopper, and axially fixed by threaded fasteners, on the inner wall of the bridge housing body, a plurality of bridge housing annular ribs are arranged in parallel along its circumference, and bridge housing longitudinal ribs are arranged along its axial direction.

[0005] In some embodiments, any one or more of an upper support, an A-frame support, an oil and gas cylinder support, an anti-collision block support, a high-voltage wire harness support, a low-voltage wire harness support, a rear cover support and an air duct are welded to the bridge housing body.

[0006] In some embodiments, A-frame supports are provided at both ends of the bridge housing body on the front side of the vehicle, an air duct is provided between the two A-frame supports diagonally above the bridge housing body, anti-collision block supports are provided at both ends directly above the bridge housing body, an upper support is provided at the center of the bridge housing body, a high-voltage wire harness support and a low-voltage wire harness support are provided circumferentially of the upper support, oil and gas cylinder supports are provided on both sides directly behind the bridge housing body, and a rear cover support is provided at the center directly behind the bridge housing body.

[0007] In some embodiments, a rear cover assembly and a strong bayonet support are provided on the rear cover support, the rear cover assembly includes a rear cover, a strong bayonet and a rear cover handle, the rear cover is connected to the rear cover support via a hinge, and the opening and closing of the rear cover is controlled by a strong buckle and a strong buckle support.

[0008] In some embodiments, radial cross-sections of the bridge housing annular ribs and the bridge housing longitudinal ribs are both rectangular.

[0009] In some embodiments, an oil outlet hole is provided on the transition area between the second step and the third step of the shaft head, and a brake support plate and a positioning outer stop are provided on one side of the large end of the shaft head.

[0010] The utility model provides a special mining vehicle drive axle housing, which adopts a steel plate rolled structure of the housing body, effectively solving the problem of difficulty in forming a large-size housing structure, and at the same time, the weight of the product is greatly reduced compared with the conventional casting or welding structure of the housing. The shaft head and the housing are positioned by the stopper and axially fixed by the threaded fastener, so that the connection strength of the shaft head is doubled, and at the same time, a staggered rectangular cross-section reinforcement rib structure is arranged inside the housing body, so that the bearing capacity of the housing body is also greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of a drive axle housing of a special mining vehicle according to an embodiment of the utility model;

[0012] Figure 2 It is a left side view of the drive axle housing of a special mining vehicle according to an embodiment of the utility model;

[0013] Figure 3 A schematic diagram of the structure of one side of the axle housing body of a special mining vehicle drive axle housing according to an embodiment of the utility model;

[0014] Figure 4 This is a schematic diagram of the structure of the other side of the axle housing body of the special mining vehicle drive axle housing according to an embodiment of the utility model;

[0015] Figure 5 This is a schematic diagram of the shaft head structure of the drive axle housing of a special mining vehicle according to an embodiment of the utility model;

[0016] Figure 6 The utility model is a schematic diagram of the rear cover assembly structure of the drive axle housing of a special mining vehicle according to an embodiment of the utility model.

[0017] The reference numerals are as follows:

[0018] 1. Bridge housing body; 2. Shaft head; 21. Oil outlet hole; 22. Brake support plate; 23. Positioning outer stopper; 11. Bridge housing annular rib; 12. Bridge housing longitudinal rib; 13. Upper support; 14. A-frame support; 15. Oil and gas cylinder support; 16. Anti-collision block support; 17. High-voltage wire harness support; 18. Low-voltage wire harness support; 19. Strong bayonet support; 110. Rear cover support; 111. Rear cover assembly; 112. Air duct; 111a. Rear cover; 111b. Strong bayonet; 111c. Rear cover handle; 3. Threaded fasteners; 4. Shaft head mounting flange. DETAILED DESCRIPTION

[0019] See also Figures 1 to 6 As shown, according to an embodiment of the utility model, a special mining vehicle drive axle bridge housing is provided, including a bridge housing body 1, wherein the bridge housing body 1 is a steel plate rolled molding structure, shaft head mounting flanges 4 are welded at both ends of the bridge housing body 1, the shaft head mounting flanges 4 and the shaft head 2 are positioned by stoppers, and axially fixed by threaded fasteners, and on the inner wall of the bridge housing body 1, a plurality of bridge housing annular ribs 11 are arranged in parallel along its circumference, and bridge housing longitudinal ribs 12 are arranged along its axial direction. Since the special mining vehicle drive axle of the present application is relatively large in size, when it is manufactured by traditional welding or casting technology, due to its huge volume, the process requirements are more complicated, and it is often the case that the welding strength cannot meet the requirements, or the casting defects are large, resulting in the limitation of the overall axle load-bearing capacity, and the high load-bearing requirements cannot be met. The present application adopts a bridge housing body 1 of a steel plate rolled structure, which effectively solves the problem of difficulty in molding a large-size bridge housing structure, and at the same time, the product weight is greatly reduced compared with the bridge housing of conventional casting or welding structure. The shaft head 2 and the bridge housing body 1 are positioned by means of a stopper and axially fixed by threaded fasteners, thereby increasing the connection strength of the shaft head 2 by several times. At the same time, staggered bridge housing annular ribs 11 and bridge housing longitudinal ribs 12 are arranged inside the bridge housing body 1, thereby greatly increasing the bearing capacity of the bridge housing body 1.

[0020] In a specific embodiment, any one or more of an upper support 13, an A-frame support 14, an oil and gas cylinder support 15, an anti-collision block support 16, a high-voltage harness support 17, a low-voltage harness support 18, a rear cover support 110 and an air duct 112 are welded on the bridge housing body 1. The outer wall of the bridge housing body is reasonably planned and designed, and can be selected or used in combination according to the axle matching requirements, which can meet more working condition design requirements.

[0021] In a specific embodiment, the two ends of the bridge housing body 1 located in front of the vehicle are provided with A-frame supports 14, the upper part of the bridge housing body 1 is provided with an air duct 112 between the two A-frame supports 14, the two ends directly above the bridge housing body 1 are provided with anti-collision block supports 16, the upper support 13 is provided at the center of the bridge housing body 1, the circumferential position of the upper support 13 is provided with a high-voltage harness support 17 and a low-voltage harness support 18, the two sides directly behind the bridge housing body 1 are provided with oil and gas cylinder supports 15, and the center position directly behind the bridge housing body 1 is provided with a rear cover support 110. This design scheme has a more compact overall structure and effectively solves the overall axle space layout problem.

[0022] In a specific embodiment, the rear cover support 110 is provided with a rear cover assembly 111 and a strong bayonet support 19, the rear cover assembly 111 includes a rear cover 111a, a strong bayonet 111b and a rear cover handle 111c, the rear cover 111a is connected to the rear cover support 110 by a hinge, and the rear cover 111a is opened and closed by the strong buckle 111b and the strong buckle support 19. When repairing the internal parts of the bridge housing, it is convenient for maintenance personnel to enter the interior for operation; at the same time, it also takes into account the heat dissipation inside the axle and prevents large foreign particles from entering the interior of the axle during high-speed driving of the vehicle.

[0023] In a specific embodiment, the radial cross-sections of the bridge housing annular ribs 11 and the bridge housing longitudinal ribs 12 are both rectangular. The bridge housing mainly plays a bearing role, and the load direction it receives is the vertical direction; at the same time, the rectangular cross-section has a large aspect ratio, which is conducive to the dispersion of the vertical load, thereby having a better bearing capacity.

[0024] In a specific embodiment, an oil outlet 21 is provided on the transition area between the second step and the third step of the shaft head 2, and a brake support plate 22 and a positioning outer stop 23 are provided on the large end side of the shaft head 2. The provision of the oil outlet 21 enables the wheel side assembly components installed at the shaft head 2 to have better lubrication performance, that is, the lubricating oil therein has better flow characteristics. The provision of the brake support plate 22, on the one hand, can effectively alleviate the problem of reduced connection strength between the bridge housing body 1 and the shaft head 2 caused by setting it on the bridge housing, that is, if the brake support plate 22 is set on the bridge housing body 1, it will cause the bridge housing body 1 to bear excessive rotational torque; on the other hand, setting it on the shaft head 2 is helpful for the installation and maintenance of the brake, and is easy to disassemble, and the brake can be repaired by removing the wheel.

[0025] Specifically, the positioning outer stop 23 on the shaft head 2 is matched with the positioning inner stop on the shaft head mounting flange 4 to complete the positioning of the shaft head 2 .

[0026] The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the utility model should be included in the protection scope of the utility model. The above is only a preferred implementation of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the utility model, and these improvements and variations should also be regarded as the protection scope of the utility model.

Claims

1. A special mining vehicle drive axle housing, characterized in that: The invention comprises a bridge housing body (1), wherein the bridge housing body (1) is a steel plate rolled structure, shaft head mounting flanges (4) are welded at both ends of the bridge housing body (1), the shaft head mounting flanges (4) and the shaft head (2) are positioned by means of stoppers, and are axially fixed by means of threaded fasteners, and a plurality of bridge housing annular ribs (11) are arranged in parallel along the circumference of the inner wall of the bridge housing body (1), and bridge housing longitudinal ribs (12) are arranged along the axial direction thereof.

2. The special mining vehicle drive axle housing according to claim 1, characterized in that: Any one or more of an upper support (13), an A-frame support (14), an oil and gas cylinder support (15), an anti-collision block support (16), a high-voltage wire harness support (17), a low-voltage wire harness support (18), a rear cover support (110) and an air duct (112) are welded to the bridge housing body (1).

3. The special mining vehicle drive axle housing according to claim 2, characterized in that: The bridge housing body (1) is provided with A-frame supports (14) at both ends on the front side of the vehicle, an air duct (112) is provided between the two A-frame supports (14) at the upper side of the bridge housing body (1), anti-collision block supports (16) are provided at both ends directly above the bridge housing body (1), an upper support (13) is provided at the center of the bridge housing body (1), a high-voltage wiring harness support (17) and a low-voltage wiring harness support (18) are provided at the circumferential position of the upper support (13), oil and gas cylinder supports (15) are provided on both sides directly behind the bridge housing body (1), and a rear cover support (110) is provided at the center directly behind the bridge housing body (1).

4. The special mining vehicle drive axle housing according to claim 2, characterized in that: A rear cover assembly (111) and a strong bayonet support (19) are arranged on the rear cover support (110); the rear cover assembly (111) comprises a rear cover (111a), a strong bayonet (111b) and a rear cover handle (111c); the rear cover (111a) is connected to the rear cover support (110) via a hinge, and the opening and closing of the rear cover (111a) are controlled by the strong bayonet (111b) and the strong bayonet support (19).

5. The special mining vehicle drive axle housing according to claim 1, characterized in that: The radial cross-sections of the bridge housing annular ribs (11) and the bridge housing longitudinal ribs (12) are both rectangular.

6. The special mining vehicle drive axle housing according to claim 1, characterized in that: An oil outlet hole (21) is provided on the transition area between the second step and the third step of the shaft head (2), and a brake support plate (22) and a positioning outer stop (23) are provided on one side of the large end of the shaft head (2).

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