Axle housing, axle assembly and operation machine

Abstract

The utility model relates to the field of operation machinery, and discloses an axle housing, an axle assembly and operation machinery. The axle housing comprises an axle package structure; the axle tube structure comprises a mounting part and a connecting part, the mounting part and the connecting part are distributed in the axial direction of the axle tube structure, and the connecting part is connected with the mounting part and the axle package structure; the two side walls of the connecting part are connected with the two side walls of the mounting part in a one-to-one correspondence mode, the two side walls of the connecting part are gradually close to each other in the direction from the mounting part to the axle package structure, and the connecting part deviates from the inner surface of the axle tube structure and is gradually away from the axis of the axle tube structure. The two side walls of the connecting part are gradually close to each other, so that the sections of the mounting part and the connecting part are in smooth transition, and the section of the connecting part is gradually reduced, so that the sections of the connecting part and the axle package structure are in smooth transition, and the condition of stress concentration between the mounting part and the connecting part can be reduced; and the stress concentration between the connecting part and the axle package structure is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of operating machinery, in particular to a bridge housing, a vehicle bridge assembly and an operating machinery. Background Art

[0002] In the field of vehicle design and production, the bridge housing is a key component of the vehicle transmission system, and its structural stability and durability are crucial to the safety and performance of the entire vehicle.

[0003] A bridge housing in the related art includes a bridge package structure and a bridge tube structure. The bridge tube structure includes a mounting portion and a connecting portion along the axial direction of the bridge tube structure. The connecting portion connects the mounting portion and the bridge package structure, the mounting portion is used to connect to the vehicle frame, and the bridge package structure is used to accommodate components such as a differential.

[0004] The cross-sectional dimensions of the bridge housing at the junction of the mounting portion and the connecting portion vary greatly in the above-mentioned related art, resulting in a sudden change in the cross-sectional dimensions at the junction, which is prone to stress concentration and affects the fatigue life of the bridge housing. Utility Model Content

[0005] In view of this, the utility model provides a bridge housing, a vehicle axle assembly and an operating machine to solve the problem of a sudden change in cross section at the junction of a mounting portion and a connecting portion of a bridge housing in the related art.

[0006] In a first aspect, the utility model provides a bridge housing, comprising:

[0007] Bridge pack structure;

[0008] A bridge tube structure, comprising a mounting portion and a connecting portion, wherein the mounting portion and the connecting portion are distributed along the axial direction of the bridge tube structure, and the connecting portion connects the mounting portion and the bridge package structure;

[0009] Among them, the two side walls of the connecting part are connected one by one with the two side walls of the mounting part, and along the direction from the mounting part to the bridge bag structure, the two side walls of the connecting part gradually approach each other, and along the direction from the mounting part to the bridge bag structure, the connecting part deviates from the surface inside the bridge tube structure and gradually moves away from the axis of the bridge tube structure.

[0010] In an optional embodiment, the surface of the connecting portion facing away from the interior of the bridge tube structure includes a first curved surface segment and a first plane segment that are connected and tangent to each other, the first curved surface segment is recessed toward the interior of the bridge tube structure, the first curved surface segment is connected to the mounting portion, and the first plane segment is connected to and tangent to the outer wall of the bridge bag structure;

[0011] And / or, the surface of the connecting portion facing the interior of the bridge tube structure includes a second curved segment and a second plane segment that are connected and tangent to each other, the second curved segment protrudes toward the interior of the bridge tube structure, the second curved segment is connected to the mounting portion, and the second plane segment is connected to and tangent to the inner wall of the bridge bag structure.

[0012] In an optional embodiment, the side edge of the first curved surface segment and / or the side edge of the first planar segment are provided with rounded corners.

[0013] In an optional embodiment, the rounded corner of the side edge of the first curved surface segment close to one end of the first flat surface segment is larger than the rounded corner of the remaining portion of the side edge of the first curved surface segment.

[0014] In an optional embodiment, the bridge tube structure includes two mounting parts, two connecting parts and two supporting parts;

[0015] The mounting portions and the connecting portions are connected one-to-one, there is a spacing between the two supporting portions, the two supporting portions extend between the two mounting portions and are both connected to the two mounting portions, the two supporting portions also extend between the two connecting portions and are both connected to the two connecting portions, and the connecting portions are both connected to the bridge bag structure.

[0016] In an optional embodiment, the surface of the mounting portion facing the interior of the bridge tube structure and the surface of the supporting portion facing the interior of the bridge tube structure are connected by a rounded and smooth transition;

[0017] And / or, the surface of the connecting portion facing the interior of the bridge tube structure is connected to the surface of the supporting portion facing the interior of the bridge tube structure through a rounded and smooth transition.

[0018] In an optional embodiment, along the direction from the mounting portion to the connecting portion, the surface of the supporting portion facing the interior of the bridge tube structure gradually moves away from the axis of the bridge tube structure.

[0019] In an optional embodiment, along the direction from the mounting portion to the connecting portion, the surface of the mounting portion facing the interior of the bridge tube structure gradually moves away from the axis of the bridge tube structure.

[0020] In a second aspect, the utility model further provides an axle assembly, comprising the axle housing as described above.

[0021] Thirdly, the utility model further provides an operating machine, comprising the axle housing as described above, or the operating machine comprises the axle assembly as described above.

[0022] In the bridge shell provided in the embodiment of the utility model, the connecting part connects the mounting part and the bridge bag structure, the two side walls of the connecting part and the two side walls of the mounting part are connected one by one, and as the connecting part extends toward the bridge bag structure, the two side walls of the connecting part gradually approach each other, so that the cross-sections of the mounting part and the connecting part are smoothly transitioned, and the cross-section of the connecting part is gradually reduced, so that the cross-sections of the connecting part and the bridge bag structure are smoothly transitioned, thereby reducing the stress concentration between the mounting part and the connecting part, and the stress concentration between the connecting part and the bridge bag structure. At the same time, as the connecting part extends toward the bridge bag structure, the outer surface of the connecting part gradually tilts toward the outside of the bridge tube structure, so that the cross-section change at the connection between the connecting part and the bridge bag structure is smoother, thereby also reducing the problem of stress concentration between the connecting part and the bridge bag structure.

[0023] The vehicle axle assembly and the operating machine provided by the utility model include the axle housing provided by the utility model, and thus include all the above advantages of the axle housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a front view of a bridge housing according to an embodiment of the utility model;

[0026] Figure 2 for Figure 1 The AA section view in the view shown;

[0027] Figure 3 for Figure 1 a top view of the illustrated diagram;

[0028] Figure 4 for Figure 3 a CC sectional view of the illustrated diagram;

[0029] Figure 5 for Figure 1 The BB section view in the figure is shown.

[0030] Description of reference numerals:

[0031] 1. Bridge package structure; 2. Bridge tube structure; 201. Installation part; 202. Connection part; 202a. First curved surface segment; 202b. First plane segment; 202c. Second curved surface segment; 202d. Second plane segment; 203. Support part; 3. Shaft head; a. Axis line. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0033] Combine the following Figures 1 to 5 , describing the bridge housing provided in an embodiment of the utility model.

[0034] Specifically, the bridge housing includes a bridge pack structure 1 and a bridge tube structure 2 .

[0035] Optionally, the bridge package structure 1 includes a cylindrical portion and a spherical portion. The axial direction of the cylindrical portion intersects the axial direction of the bridge tube structure 2, for example, the axial directions of the cylindrical portion and the bridge tube structure 2 are perpendicular. The spherical portion is arranged at one end of the cylindrical portion, and the end surface of the cylindrical portion away from the end of the spherical portion is used to install the reducer.

[0036] The bridge tube structure 2 includes a mounting portion 201 and a connecting portion 202. The mounting portion 201 and the connecting portion 202 are distributed along the axial direction of the bridge tube structure 2. The mounting portion 201 is used to connect to the vehicle frame, and the connecting portion 202 connects the mounting portion 201 and the bridge package structure 1. Specifically, the bridge tube structure 2 is configured as a tube structure. The mounting portion 201 and the connecting portion 202 are arranged on the same side of the axis a of the bridge tube structure 2, and both form the tube wall of the bridge tube structure 2. The connecting portion 202 is connected to the cylindrical portion of the bridge package structure 1, such as Figure 3 As shown, along the front and rear direction of the bridge housing, Figure 3 In the up-down direction, the size of the mounting portion 201 is larger than the size of the cylindrical portion.

[0037] Among them, Figure 3 As shown, the two side walls of the connecting portion 202 are connected to the two side walls of the mounting portion 201 in a one-to-one correspondence, and along the direction from the mounting portion 201 to the bridge package structure 1, the two side walls of the connecting portion 202 gradually approach each other. Along the direction from the mounting portion 201 to the bridge package structure 1, the connecting portion 202 is away from the surface inside the bridge tube structure 2, and gradually moves away from the axis a of the bridge tube structure 2, as shown in FIG. Figure 4 As shown, the surface of the connecting portion 202 facing away from the inside of the bridge tube refers to the surface of the connecting portion 202 facing away from the axis a or the outer surface of the connecting portion 202 .

[0038] In this embodiment, the connecting portion 202 connects the mounting portion 201 and the bridge bag structure 1, and the two side walls of the connecting portion 202 are connected to the two side walls of the mounting portion 201 in a one-to-one correspondence, and as the connecting portion 202 extends toward the bridge bag structure 1, the two side walls of the connecting portion 202 gradually approach each other, so that the cross-sections of the mounting portion 201 and the connecting portion 202 are smoothly transitioned, and the cross-section of the connecting portion 202 is gradually reduced, so that the cross-sections of the connecting portion 202 and the bridge bag structure 1 are smoothly transitioned, thereby reducing the stress concentration between the mounting portion 201 and the connecting portion 202, and the stress concentration between the connecting portion 202 and the bridge bag structure 1. At the same time, as the connecting portion 202 extends toward the bridge bag structure 1, the outer surface of the connecting portion 202 gradually tilts toward the outside of the bridge tube structure 2, so that the cross-section change at the connection between the connecting portion 202 and the bridge bag structure 1 is smoother, thereby also reducing the problem of stress concentration between the connecting portion 202 and the bridge bag structure 1.

[0039] Specifically, the bridge tube structure 2 is disposed on both sides of the bridge package structure 1, and the bridge tube structure 2 is connected to the bridge package structure 1. The ends of the bridge tube structure 2 that are away from the bridge package structure 1 are connected to the shaft head 3.

[0040] refer to Figure 3 As shown, in some embodiments provided by the present invention, the angle between the two side walls of the connecting portion 202 is b, for example, the value range of b is 40-50°.

[0041] refer to Figure 4 As shown, in some embodiments provided by the present invention, the surface of the connecting portion 202 facing away from the inside of the bridge tube structure 2 includes a first curved surface segment 202a and a first flat surface segment 202b that are connected and tangent to each other.

[0042] The first curved surface segment 202a is recessed toward the inside of the bridge tube structure 2 , the first curved surface segment 202a is connected to the mounting portion 201 , and the first plane segment 202b is connected to and tangent to the outer wall of the bridge bag structure 1 .

[0043] In this embodiment, the first plane section 202b is tangent to the outer wall of the bridge bag structure 1, so that the first plane section 202b and the outer wall of the outer bag structure have a smooth transition, which can reduce stress concentration. Since the first plane section 202b is inclined relative to the mounting portion 201, the first curved surface section 202a is connected and transitioned between the mounting portion 201 and the first plane section 202b, which can avoid the problem of cross-sectional mutation caused by the angle change between the mounting portion 201 and the first plane section 202b.

[0044] refer to Figure 4 As shown, in some embodiments provided by the present invention, the angle between the first plane segment 202b and the axis a of the bridge tube structure 2 is c, for example, the value range of c is 30-40°.

[0045] In some embodiments provided by the present invention, the surface of the connecting portion 202 facing the interior of the bridge tube structure 2 includes a second curved segment 202c and a second plane segment 202d that are connected and tangent to each other, the second curved segment 202c protrudes toward the interior of the bridge tube structure 2, the second curved segment 202c is connected to the mounting portion 201, and the second plane segment 202d is connected to and tangent to the inner wall of the bridge bag structure 1.

[0046] In this embodiment, the second plane segment 202d is tangent to the inner wall of the bridge bag structure 1, so that the second plane segment 202d and the inner wall of the outer bag structure have a smooth transition, which can reduce stress concentration. Since the second plane segment 202d is inclined relative to the mounting portion 201, the second curved surface segment 202c is connected and transitioned between the mounting portion 201 and the second plane segment 202d, which can avoid the problem of cross-sectional mutation caused by the angle change between the mounting portion 201 and the second plane segment 202d.

[0047] Optionally, the angle between the second plane segment 202d and the axis a ranges from 30° to 40°.

[0048] refer to Figure 1 and Figure 3 As shown, in some embodiments provided by the present invention, the side edge of the first curved surface segment 202a and / or the side edge of the first plane segment 202b are provided with rounded corners. The problem of cross-sectional mutation can be reduced by providing rounded corners, thereby avoiding stress concentration.

[0049] refer to Figure 3 As shown, in some embodiments provided by the present invention, the rounded corner of the side edge of the first curved surface segment 202a close to one end of the first plane segment 202b is greater than the rounded corner of the rest of the side edge of the first curved surface segment 202a. The intersection of the first curved surface segment 202a and the first plane segment 202b involves the transition between the curved surface and the plane, and there is a problem of stress concentration. By increasing the rounded corner of one end of the first curved surface segment 202a close to the first plane segment 202b, the connection structure between the side edge of the first curved surface segment 202a and the side edge of the first plane segment 202b is made smoother, thereby reducing the problem of stress concentration between the first curved surface segment 202a and the first plane segment 202b.

[0050] refer to Figure 3 As shown, optionally, the rounded corner of the first plane segment 202b close to one end of the first plane segment 202b is Ra, and the rounded corner of the remaining portion is Rb. For example, the range of Ra is R25 to R40, and the range of Ra is R10 to R20.

[0051] In some embodiments provided by the present invention, the bridge tube structure 2 includes two installation parts 201 , two connection parts 202 and two support parts 203 .

[0052] The mounting portion 201 and the connecting portion 202 are connected one by one, and one of the two mounting portions 201 is used to connect to the vehicle frame. There is a spacing between the two supporting portions 203, and the two supporting portions 203 extend between the two mounting portions 201 and are both connected to the two mounting portions 201. The two supporting portions 203 also extend between the two connecting portions 202 and are both connected to the two connecting portions 202. The connecting portions 202 are both connected to the bridge bag structure 1. That is, the two mounting portions 201, the two connecting portions 202 and the two supporting portions 203 form a tubular structure, and the tubular structure is connected to the interior of the bridge bag structure 1.

[0053] In this embodiment, the two supporting parts 203 are supported between the two mounting parts 201 and the two connecting parts 202, so that the bridge tube structure 2 forms a structure similar to an I-beam, so that the bridge tube structure 2 has better bending resistance, thereby improving the bearing capacity of the bridge shell.

[0054] Furthermore, the bridge tube structure 2 and the bridge package structure 1 are configured as an integrally cast structure.

[0055] Optionally, a rib is provided on the surface of the support portion 203 facing away from the interior of the bridge tube structure 2, and both ends of the rib are respectively connected to two mounting portions 201. By providing the rib, on the one hand, the rib can support the two mounting portions 201, so that the rib shares the pressure of the support portion 203, and on the other hand, the rib can improve the connection strength between the support portion 203 and the mounting portion 201.

[0056] refer to Figure 5 As shown, in some embodiments provided by the present invention, the surface of the mounting portion 201 facing the inside of the bridge tube structure 2 and the surface of the support portion 203 facing the inside of the bridge tube structure 2 are connected by rounded corners and smooth transitions. That is, the inner surface of the mounting portion 201 and the inner surface of the support portion 203 are connected by rounded corners and smooth transitions. Such a configuration can reduce the situation of sudden changes in the cross section at the connection between the mounting portion 201 and the support portion 203, and avoid the problem of stress concentration between the mounting portion 201 and the support portion 203.

[0057] Optionally, the fillet between the inner surface of the mounting portion 201 and the inner surface of the supporting portion 203 is Rc. For example, the value range of Rc is R15 to R25.

[0058] In some embodiments provided by the present invention, the surface of the connecting portion 202 facing the inside of the bridge tube structure 2 and the surface of the supporting portion 203 facing the inside of the bridge tube structure 2 are connected by rounded corners and smooth transitions. That is, the inner surface of the connecting portion 202 and the inner surface of the supporting portion 203 are connected by rounded corners and smooth transitions. Such a configuration can reduce the situation of sudden changes in the cross section at the connection between the connecting portion 202 and the supporting portion 203, and avoid the problem of stress concentration between the connecting portion 202 and the supporting portion 203.

[0059] refer to Figure 4 As shown, in some embodiments provided by the present invention, along the direction from the mounting portion 201 to the connecting portion 202, the surface of the supporting portion 203 facing the inside of the bridge tube structure 2 gradually moves away from the axis a of the bridge tube structure 2. That is, along the direction from the mounting portion 201 to the connecting portion 202, the inner surface of the supporting portion 203 gradually moves away from the axis a of the bridge tube structure 2.

[0060] like Figure 4 As shown, the support portion 203 is arranged between the shaft head 3 and the bridge bag structure 1, and the wall thickness of the shaft head 3 is greater than the wall thickness of the bridge bag structure 1. In this embodiment, by making the inner surface of the support portion 203 gradually move away from the axis a of the bridge tube structure 2, the wall thickness of the bridge tube structure 2 gradually decreases in the direction from the shaft head 3 to the bridge bag structure 1, thereby reducing the occurrence of cross-sectional mutations and avoiding stress concentration problems.

[0061] refer to Figure 2 As shown, in some embodiments provided by the present invention, along the direction from the mounting portion 201 to the connecting portion 202, the surface of the mounting portion 201 facing the inside of the bridge tube structure 2 gradually moves away from the axis a of the bridge tube structure 2. That is, along the direction from the mounting portion 201 to the connecting portion 202, the inner surface of the mounting portion 201 gradually moves away from the axis a of the bridge tube structure 2.

[0062] like Figure 2 As shown, the mounting portion 201 is arranged between the shaft head 3 and the bridge bag structure 1, and the wall thickness of the shaft head 3 is greater than the wall thickness of the bridge bag structure 1. In this embodiment, by making the inner surface of the mounting portion 201 gradually away from the axis a of the bridge tube structure 2, the wall thickness of the bridge tube structure 2 gradually decreases in the direction from the shaft head 3 to the bridge bag structure 1, thereby reducing the occurrence of cross-sectional mutations and avoiding stress concentration problems.

[0063] An axle assembly is also provided in an embodiment of the utility model.

[0064] Specifically, the axle assembly includes the axle housing as described above. It is understandable that the axle assembly also includes wheel bearings, half shafts, differentials, drive shafts, suspension systems and brake systems, but this application does not involve improvements to the above components, so they will not be described in detail.

[0065] It should be noted that the axle assembly includes the bridge housing, which also includes all the above-mentioned advantages of the bridge housing, so it will not be elaborated on here.

[0066] An operating machine is also provided in an embodiment of the utility model.

[0067] Specifically, the working machine includes the axle housing as described above or the axle assembly as described above.

[0068] It should be noted that the operating machinery includes the bridge housing, which also includes all the above-mentioned advantages of the bridge housing, so it will not be elaborated on.

[0069] For example, the working machine includes, but is not limited to, a loader or an excavator.

[0070] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A bridge housing, characterized in that: include: Bridge pack structure (1); A bridge tube structure (2), comprising a mounting portion (201) and a connecting portion (202), wherein the mounting portion (201) and the connecting portion (202) are distributed along the axial direction of the bridge tube structure (2), and the connecting portion (202) connects the mounting portion (201) and the bridge package structure (1); The two side walls of the connecting portion (202) are connected to the two side walls of the mounting portion (201) in a one-to-one correspondence, and along the direction from the mounting portion (201) to the bridge bag structure (1), the two side walls of the connecting portion (202) gradually approach each other, and along the direction from the mounting portion (201) to the bridge bag structure (1), the connecting portion (202) deviates from the surface inside the bridge tube structure (2) and gradually moves away from the axis (a) of the bridge tube structure (2).

2. The bridge housing according to claim 1, characterized in that: The surface of the connecting portion (202) facing away from the interior of the bridge tube structure (2) comprises a first curved surface segment (202a) and a first plane segment (202b) that are connected and tangent to each other, the first curved surface segment (202a) being recessed toward the interior of the bridge tube structure (2), the first curved surface segment (202a) being connected to the mounting portion (201), and the first plane segment (202b) being connected to and tangent to the outer wall of the bridge bag structure (1); And / or, the surface of the connecting portion (202) facing the interior of the bridge tube structure (2) includes a second curved segment (202c) and a second plane segment (202d) that are connected and tangent to each other, the second curved segment (202c) protrudes toward the interior of the bridge tube structure (2), the second curved segment (202c) is connected to the mounting portion (201), and the second plane segment (202d) is connected to and tangent to the inner wall of the bridge bag structure (1).

3. The axle housing according to claim 2, characterized in that: The side edge of the first curved surface segment (202a) and / or the side edge of the first flat surface segment (202b) are provided with rounded corners.

4. The axle housing according to claim 3, characterized in that: The rounded corner of one end of the side edge of the first curved surface segment (202a) close to the first flat surface segment (202b) is larger than the rounded corner of the remaining part of the side edge of the first curved surface segment (202a).

5. The axle housing according to claim 1, characterized in that: The bridge pipe structure (2) comprises two mounting parts (201), two connecting parts (202) and two supporting parts (203); The mounting portions (201) and the connecting portions (202) are connected in a one-to-one correspondence, a spacing is provided between the two supporting portions (203), the two supporting portions (203) extend between the two mounting portions (201) and are both connected to the two mounting portions (201), the two supporting portions (203) also extend between the two connecting portions (202) and are both connected to the two connecting portions (202), and the connecting portions (202) are both connected to the bridge pack structure (1).

6. The axle housing according to claim 5, characterized in that: The surface of the mounting portion (201) facing the interior of the bridge tube structure (2) and the surface of the supporting portion (203) facing the interior of the bridge tube structure (2) are connected by a rounded and smooth transition; And / or, the surface of the connecting portion (202) facing the interior of the bridge tube structure (2) and the surface of the supporting portion (203) facing the interior of the bridge tube structure (2) are connected through a rounded and smooth transition.

7. The axle housing according to claim 5, characterized in that: Along the direction from the mounting portion (201) to the connecting portion (202), the supporting portion (203) faces the surface inside the bridge tube structure (2) and gradually moves away from the axis (a) of the bridge tube structure (2).

8. The axle housing according to claim 1, characterized in that: Along the direction from the mounting portion (201) to the connecting portion (202), the mounting portion (201) faces the surface inside the bridge tube structure (2), gradually moving away from the axis (a) of the bridge tube structure (2).

9. A vehicle axle assembly, characterized in that: Comprising the bridge housing as described in any one of claims 1-8.

10. A working machine, characterized in that: The working machine comprises the axle housing as described in any one of claims 1 to 8, or the working machine comprises the axle assembly as described in claim 9.

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