Conical bearing limiting structure applied to new energy commercial vehicle and new energy commercial vehicle

Abstract

The utility model discloses a cone bearing limiting structure applied to a new energy commercial vehicle and the new energy commercial vehicle, and relates to the technical field of vehicles. The cone bearing limiting structure comprises a main shaft, a folding gasket and a locking bolt. The inner surface of the tail end of the main shaft is provided with internal threads, and the end face is provided with at least one clamping groove. The locking bolt comprises a stud and a bolt head, the stud is provided with an external thread matched with the internal thread, and at least one plane is arranged on the side face of the bolt head. The folding gasket is provided with a through hole, at least one clamping protrusion is arranged on the inner side of the folding gasket, and the at least one clamping protrusion can be embedded into the at least one clamping groove. The folding gasket can be bent, and a bent part formed after the folding gasket is bent can be tightly attached to the plane of the side face of the bolt head. Therefore, through the folding gasket provided with the clamping protrusion and the main shaft provided with the clamping groove, limiting of the locking bolt is achieved, the bearing capacity is high, the requirement for machining precision is low, dismounting and mounting are easy and convenient, and limiting of the locking bolt can be guaranteed even in the vibration environment.

Description

Technical Field

[0001] This specification relates to the field of vehicle technology, and in particular to a tapered bearing limiting structure for use in new energy commercial vehicles and the new energy commercial vehicle itself. Background Technology

[0002] Typically, tapered roller bearings can be used to withstand both radial and axial combined loads, where radial loads are dominant, and axial and axial combined loads, where axial loads are dominant. These bearings are separable; their inner ring assembly (including tapered rollers and cage) and outer ring can be installed separately. To ensure that the tapered bearing mounted on the shaft achieves optimal clearance for its service life, a limiting structure is generally required to prevent positional slippage or sliding during operation.

[0003] In the existing technology, the tapered bearings arranged in the shaft system of the electric drive axle of new energy commercial vehicles follow the traditional shaft system arrangement and are usually limited by snap rings (elastic retaining rings) or locking nuts.

[0004] However, snap ring limiting has a weak load-bearing capacity and is only suitable for small axial loads (generally less than 10% of the radial load). Furthermore, it requires high precision in machining the groove and is unsuitable for vibration or impact environments. Locking nut limiting, on the other hand, increases the axial dimension of the shaft and makes disassembly difficult after assembly, hindering maintenance. Utility Model Content

[0005] This specification provides a tapered bearing limiting structure for use in new energy commercial vehicles and a new energy commercial vehicle, in order to at least partially solve the aforementioned problems existing in the prior art.

[0006] The following technical solution is adopted in this specification:

[0007] This manual provides a tapered bearing limiting structure for use in new energy commercial vehicles, including a main shaft, a folding washer, and a locking bolt;

[0008] The end of the main shaft is a cylindrical structure with internal threads on its inner surface and at least one snap-fit ​​groove on its end face.

[0009] The locking bolt includes a stud and a bolt head. The stud is provided with an external thread that matches the end of the spindle, and the bolt head is provided with at least one flat surface on its side.

[0010] The folding gasket has a through hole, and the inner side of the folding gasket has at least one snap-fit ​​protrusion, which can be inserted into at least one snap-fit ​​groove; the folding gasket can be bent, and the bent portion formed after bending can fit closely with the plane of the side of the plug head.

[0011] Preferably, the number and / or position of the at least one snap-fit ​​protrusion are adapted to the at least one snap-fit ​​groove.

[0012] Preferably, the strength and / or ductility and / or rigidity of the folding pad are within a preset performance range, so that the folding pad can be bent and the bending radius is less than a first preset parameter.

[0013] Preferably, the edge of the folding pad converges toward a first preset direction, so that the folding pad can be bent toward the first preset direction after being subjected to external force;

[0014] The first preset direction is the direction in which the snap-fit ​​protrusion is provided.

[0015] Preferably, the number of the snap-fit ​​protrusions and the number of the snap-fit ​​grooves are both 2.

[0016] Preferably, the side of the plug head is provided with two planes.

[0017] Preferably, the tapered bearing limiting structure applied to new energy commercial vehicles further includes a bending tool.

[0018] Preferably, the bending tool includes a gripping part and a pressing part that are linked together, for bending the folding pad in response to the user's operation.

[0019] Preferably, the tapered roller bearing limiting structure applied to new energy commercial vehicles further includes a gear hub, a bearing bushing, a bearing gasket, and a tapered roller bearing;

[0020] The spindle is provided with a shoulder, an external spline, and a mounting groove;

[0021] The gear hub is provided with an internal spline that mates with the external spline; the gear hub can be detachably connected to the spindle via the internal spline.

[0022] The inner diameter of the bearing bushing is interference-fitted with the outer diameter of the spindle, allowing for detachable connection with the spindle.

[0023] On the other hand, this specification also provides a new energy commercial vehicle, including the tapered bearing limiting structure for new energy commercial vehicles provided in the above aspect.

[0024] The above-mentioned technical solutions adopted in this specification can achieve the following beneficial effects:

[0025] According to the above, the tapered bearing limiting structure applied to new energy commercial vehicles includes a main shaft, a folding washer, and a locking bolt. The end of the main shaft is cylindrical, with internal threads on its inner surface and at least one locking groove on its end face. The locking bolt includes a stud and a bolt head. The stud has external threads that match the end of the main shaft, and the bolt head has at least one flat surface on its side. The folding washer has a through hole, and its inner side has at least one locking protrusion that can be inserted into the at least one locking groove. The folding washer is bendable, and the bent portion can fit tightly against the flat surface of the bolt head's side.

[0026] As can be seen, this tapered bearing limiting structure achieves the limiting of the locking bolt by setting a folded washer with a snap-fit ​​protrusion and a main shaft with a snap-fit ​​groove. It has a strong load-bearing capacity, is easy to process, and can ensure the limiting of the locking bolt even in a vibration environment. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of this specification and form part of this specification, illustrate exemplary embodiments and are used to explain this specification, but do not constitute an undue limitation thereof. In the drawings:

[0028] Figure 1 A schematic diagram of a tapered bearing limiting structure for use in new energy commercial vehicles, provided as an embodiment of this specification;

[0029] Figure 2 A schematic diagram of a tapered bearing limiting structure for use in new energy commercial vehicles, provided as an embodiment of this specification;

[0030] Figure 3 A partial structural schematic diagram of a tapered bearing limiting structure for use in new energy commercial vehicles, provided as an embodiment of this specification;

[0031] Figure 4 A partial structural schematic diagram of a tapered bearing limiting structure for use in new energy commercial vehicles, provided as an embodiment of this specification;

[0032] Figure 5 A schematic diagram of the structure of a folding gasket provided in one embodiment of this specification;

[0033] Figure 6 A schematic diagram of the structure of a folding gasket provided in one embodiment of this specification;

[0034] Figure 7 A partial structural schematic diagram of a tapered bearing limiting structure for use in new energy commercial vehicles, provided as an embodiment of this specification;

[0035] Figure 8 This is a partial structural diagram of a tapered bearing limiting structure for use in new energy commercial vehicles, provided as an embodiment of this specification.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Main spindle; 2. Folding washer; 3. Locking bolt; 11. Internal thread; 12. Snap-fit ​​groove; 31. Stud; 32. External thread; 33. Bolt head; 34. Flat surface; 21. Snap-fit ​​protrusion; 22. Bend; 4. Tapered bearing. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this specification clearer, the technical solutions of this specification will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this specification, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this specification without creative effort are within the scope of protection of this application.

[0039] In the description of this invention, it should be noted that the term "or" is generally used to include the meaning of "and / or" unless otherwise expressly stated in the content.

[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. Furthermore, in the description of this application, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0041] Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0042] The technical solutions provided in the various embodiments of this specification are described in detail below with reference to the accompanying drawings.

[0043] Figure 1 as well as Figure 2 All of these are structural schematic diagrams of a tapered bearing limiting structure applied to new energy commercial vehicles, provided as an embodiment of this specification. Figure 1 as well as Figure 2 As shown, the tapered bearing limiting structure applied to new energy commercial vehicles includes a main shaft 1, a folding washer 2, and a locking bolt 3.

[0044] Preferably, the end of the main shaft 1 is a cylindrical structure.

[0045] Preferably, the inner surface of the end of the spindle 1 is provided with an internal thread 11, and the end face of the end of the spindle 1 is provided with at least one snap-fit ​​groove 12.

[0046] Figure 3 A partial structural diagram of a tapered bearing limiting structure for use in new energy commercial vehicles, provided as an embodiment of this specification, is shown below. Figure 3 As shown, the inner surface of the end of the spindle 1 is provided with an internal thread 11, and the end face of the end of the spindle 1 is provided with at least one snap-fit ​​groove 12.

[0047] Preferably, the locking bolt 3 includes a stud 31 and a bolt head 33.

[0048] Preferably, the stud 31 is provided with external threads 32.

[0049] Preferably, the external thread 32 of the stud 31 matches the internal thread 11 at the end of the spindle 1, and the size of the stud 31 is adapted to the end of the spindle 1, so that the stud 31 can be screwed into the interior of the end of the spindle 1 through the external thread 32.

[0050] Preferably, the side of the plug head 33 is provided with at least one flat surface 34.

[0051] Figure 4 A partial structural diagram of a tapered bearing limiting structure for use in new energy commercial vehicles, provided as an embodiment of this specification, is shown below. Figure 4 As shown, the stud 31 is provided with external thread 32, and the side of the bolt head 33 is provided with two flat surfaces 34.

[0052] Preferably, the folded pad 2 is provided with a through hole.

[0053] Preferably, the size of the through hole is adapted to the size of the stud 31, so that the folding washer 2 can be fitted onto the outside of the stud 31.

[0054] Preferably, the inner side of the folding pad 2 is provided with at least one snap-fit ​​protrusion 21.

[0055] Preferably, the folding pad 2 is bendable.

[0056] Figure 5 as well as Figure 6 These are all schematic diagrams of the structure of the folded gasket 2 provided in one embodiment of this specification, such as... Figure 5 As shown, the folded pad 2 is not bent, as... Figure 6 As shown, the folded pad 2 is bent, and the bent portion is the bend 22. Figure 5 as well as Figure 6 As shown, the folding pad 2 is provided with two snap-fit ​​protrusions 21.

[0057] Preferably, the size and number of the snap-fit ​​protrusions 21 are adapted to the snap-fit ​​grooves 12.

[0058] Preferably, the at least one snap-fit ​​protrusion 21 can be inserted into the at least one snap-fit ​​groove 12.

[0059] Preferably, the folding gasket 2 is bendable, and the bend 22 formed after bending can fit closely with the plane 34 on the side of the bolt head 33.

[0060] Figure 7 A partial structural diagram of a tapered bearing limiting structure for use in new energy commercial vehicles, provided as an embodiment of this specification, is shown below. Figure 7 As shown, the bent portion 22 is in close contact with the plane 34 on the side of the bolt head 33.

[0061] According to the above, the tapered bearing limiting structure applied to new energy commercial vehicles includes a main shaft 1, a folding washer 2, and a locking bolt 3. The end of the main shaft 1 is cylindrical, with an internal thread 11 on its inner surface and at least one engaging groove 12 on its end face. The locking bolt 3 includes a stud 31 and a bolt head 33. The stud 31 has an external thread 32 that matches the end of the main shaft 1, and the bolt head 33 has at least one flat surface 34 on its side. The folding washer 2 has a through hole, and its inner side has at least one engaging protrusion 21 that can be inserted into the at least one engaging groove 12. The folding washer 2 is bendable, and the resulting bend 22 can fit tightly against the flat surface 34 on the side of the bolt head 33.

[0062] As can be seen, the tapered bearing limiting structure achieves the limiting of the locking bolt 3 by setting a folded pad 2 with a snap-fit ​​protrusion 21 and a main shaft 1 with a snap-fit ​​groove 12. It has strong load-bearing capacity, low machining accuracy requirements, and is easy to disassemble and assemble. Even in a vibration environment, it can ensure the limiting of the locking bolt 3.

[0063] Preferably, the number and / or position of the at least one snap-fit ​​protrusion 21 are adapted to the at least one snap-fit ​​groove 12.

[0064] Preferably, the strength and / or ductility and / or rigidity of the folding gasket 2 are within a preset performance range, allowing the folding gasket 2 to be bent with a bending radius smaller than a first preset parameter. The first preset parameter can be 1mm, 2mm, 0.5mm, etc.

[0065] Preferably, the edge of the folding pad 2 converges towards a first preset direction, so that the folding pad 2 can be bent towards the first preset direction after being subjected to external force. The first preset direction is the direction in which the snap-fit ​​protrusion 21 is provided.

[0066] Preferably, the number of the snap-fit ​​protrusion 21 and the snap-fit ​​groove 12 are both 2.

[0067] Preferably, the side of the bolt head 33 is provided with two planes 34.

[0068] Preferably, the tapered bearing limiting structure applied to new energy commercial vehicles also includes a bending tool.

[0069] Preferably, the bending tool includes an interlocking grip and a pressing part for bending the folding pad 2 in response to a user's operation.

[0070] Preferably, the tapered bearing limiting structure applied to new energy commercial vehicles also includes a gear hub, bearing bushing, bearing gasket, and tapered roller bearing.

[0071] The main shaft 1 includes components such as a shoulder, external spline, mounting groove, bearing gasket, tapered roller bearing, housing assembly, and gasket assembly. The gear hub has an internal spline that mates with the external spline. The gear hub can be detachably connected to the main shaft 1 via the internal spline. The inner diameter of the bearing bushing is interference-fitted with the outer diameter of the main shaft 1, allowing for detachable connection. The bearing gasket is interference-fitted with the outer diameter of the main shaft 1 and can be press-fitted onto the main shaft 1 by heating. Its right side is limited by the bearing bushing. With an adjustable design, it can also be machined as a single piece with the main shaft 1 through shaft system adjustments. The inner ring of the tapered roller bearing is interference-fitted with the outer diameter of the main shaft 1, and the outer ring is press-fitted into the bearing hole of the housing assembly. Its right side is limited by the bearing gasket. The housing assembly assembles various shaft assemblies through the bearing holes, and also has other features for assembling various functional parts. The shim assembly is fitted between the outer ring of the tapered roller bearing and the bearing bore of the housing assembly. It comes in various thicknesses; the appropriate thickness is selected based on the preload requirements of the tapered roller bearing to ensure optimal bearing life. Depending on the assembly design, the shim can also be adjusted to the other end of spindle 1.

[0072] Preferably, the tapered bearing 4 is positioned on the outside of the main shaft 1, and the tapered bearing 4 is adjacent to the folding washer 2 and the locking bolt 3. Figure 8 A partial structural diagram of a tapered bearing limiting structure for use in new energy commercial vehicles, provided as an embodiment of this specification, is shown below. Figure 8 As shown.

[0073] The above are one or more embodiments of the tapered bearing limiting structure for new energy commercial vehicles provided in this specification. Based on the same idea, this specification also provides a new energy commercial vehicle.

[0074] Preferably, the new energy commercial vehicle includes the tapered bearing limiting structure for new energy commercial vehicles provided in any of the above embodiments.

[0075] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0076] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0077] The above description is merely an embodiment of this specification and is not intended to limit this specification. Various modifications and variations can be made to this specification by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this specification should be included within the scope of the claims of this application.

Claims

1. A tapered bearing limiting structure for use in new energy commercial vehicles, characterized in that, Includes the spindle, folding shims, and locking bolts; The end of the main shaft is a cylindrical structure with internal threads on its inner surface and at least one snap-fit ​​groove on its end face. The locking bolt includes a stud and a bolt head. The stud is provided with an external thread that matches the end of the spindle, and the bolt head is provided with at least one flat surface on its side. The folding gasket has a through hole, and the inner side of the folding gasket has at least one snap-fit ​​protrusion, which can be inserted into at least one snap-fit ​​groove; the folding gasket can be bent, and the bent portion formed after bending can fit closely with the plane of the side of the plug head.

2. The tapered bearing limiting structure for new energy commercial vehicles according to claim 1, characterized in that, The number and / or position of the at least one snap-fit ​​protrusion are adapted to the at least one snap-fit ​​groove.

3. The tapered bearing limiting structure for new energy commercial vehicles according to claim 1, characterized in that, The strength and / or ductility and / or rigidity of the folding pad are within a preset performance range, enabling the folding pad to be bent with a bending radius smaller than a first preset parameter.

4. The tapered bearing limiting structure for new energy commercial vehicles according to claim 1, characterized in that, The edges of the folding pad converge toward a first preset direction, so that the folding pad can be bent toward the first preset direction after being subjected to external force. The first preset direction is the direction in which the snap-fit ​​protrusion is provided.

5. The tapered bearing limiting structure for new energy commercial vehicles according to any one of claims 1-4, characterized in that, The number of the snap-fit ​​protrusions and the number of the snap-fit ​​grooves are both 2.

6. The tapered bearing limiting structure for new energy commercial vehicles according to any one of claims 1-4, characterized in that, The side of the plug head has two flat surfaces.

7. The tapered bearing limiting structure for new energy commercial vehicles according to any one of claims 1-4, characterized in that, The tapered bearing limiting structure applied to new energy commercial vehicles also includes a bending tool.

8. The tapered bearing limiting structure for new energy commercial vehicles according to claim 7, characterized in that, The bending tool includes an interlocking grip and a pressing part, used to bend the folding pad in response to user operation.

9. The tapered bearing limiting structure for new energy commercial vehicles according to any one of claims 1-4, characterized in that, The tapered roller bearing limiting structure applied to new energy commercial vehicles also includes a gear hub, bearing bushing, bearing gasket, and tapered roller bearing. The spindle is provided with a shoulder, an external spline, and a mounting groove; The gear hub is provided with an internal spline that mates with the external spline; the gear hub can be detachably connected to the spindle via the internal spline. The inner diameter of the bearing bushing is interference-fitted with the outer diameter of the spindle, allowing for detachable connection with the spindle.

10. A new energy commercial vehicle, characterized in that, Including the tapered bearing limiting structure for new energy commercial vehicles as described in any one of claims 1-9.

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