Plate spring protection device and vehicle

Abstract

The invention discloses a plate spring protection device and a vehicle, the plate spring protection device comprises a plate spring support member, a first end of the plate spring support member is suitable for being connected with a vehicle frame; the first end of the lifting lug assembly is rotatably connected with the second end of the plate spring support part, the second end of the lifting lug assembly is suitable for being connected with a plate spring, limiting grooves are formed in the two sides of the first end of the lifting lug assembly, and rotation limiting protrusions are arranged on the two sides, corresponding to the rotation direction of the first end of the lifting lug assembly, of the plate spring support part. And the rotary limiting bulge is selectively matched with the limiting groove in a limiting manner. Therefore, the rotation limiting protrusion on the plate spring support piece is selectively matched with the limiting groove in the lifting lug assembly in a limiting mode so as to limit the maximum rotation angle of the lifting lug assembly relative to the plate spring support piece, in this way, after the plate spring is broken, displacement of an axle in the longitudinal direction can be reduced, and the stability and safety of vehicle running are improved; and the plate spring bracket piece is simple in structure and easy to assemble.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a leaf spring protection device and a vehicle. Background Art

[0002] With the advancement of technology and improvements in people's living standards, vehicles have become an indispensable means of transportation. Vehicles are equipped with leaf springs, which effectively cushion and reduce vibrations during driving, enhancing ride stability and comfort. However, if a leaf spring breaks while the vehicle is in motion, it can compromise driving safety.

[0003] In the related art, some leaf springs are not equipped with a fracture protection device, or the fracture protection device of the leaf spring not only requires additional components to achieve the limitation of the lifting ear assembly, but also the limiting structure of the lifting ear assembly is relatively complex, making assembly and production difficult. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a leaf spring protection device that is not only simple and reliable in structure, but also capable of limiting the maximum rotation angle of the lifting eye assembly relative to the leaf spring bracket, thereby improving vehicle driving stability and safety.

[0005] The present invention further provides a vehicle.

[0006] According to the leaf spring protection device of the present invention, it includes: a leaf spring bracket member, the first end of the leaf spring bracket member is suitable for being connected to the vehicle frame; a lifting ear assembly, the first end of the lifting ear assembly is rotatably connected to the second end of the leaf spring bracket member, the second end of the lifting ear assembly is suitable for being connected to the leaf spring, and limiting grooves are provided on both sides of the first end of the lifting ear assembly, and rotation limiting protrusions are provided on both sides of the leaf spring bracket member corresponding to the rotation direction of the first end of the lifting ear assembly, and the rotation limiting protrusions are selectively limited and matched with the limiting grooves to limit the maximum rotation angle of the lifting ear assembly relative to the leaf spring bracket member.

[0007] Therefore, by selectively limiting the rotation limit protrusion on the leaf spring bracket and the limiting groove on the lifting ear assembly to limit the maximum rotation angle of the lifting ear assembly relative to the leaf spring bracket, not only can the longitudinal displacement of the axle be reduced after the leaf spring breaks, thereby improving the stability and safety of the vehicle, but the leaf spring bracket also has a simple structure and is easy to assemble.

[0008] In some examples of the present invention, the rotation limiting protrusion and the leaf spring bracket are integrally formed.

[0009] In some examples of the present invention, the two rotation limit protrusions are set as the first rotation limit protrusion and the second rotation limit protrusion respectively. When the lifting ear assembly is limitedly engaged with the first rotation limit protrusion, the central axis of the lifting ear assembly extending in the length direction is set as the first central axis. When the lifting ear assembly is limitedly engaged with the second rotation limit protrusion, the central axis of the lifting ear assembly extending in the length direction is set as the second central axis. An angle α is formed between the first central axis and the second central axis, and α satisfies the relationship: 30°≤α≤40°.

[0010] In some examples of the present invention, the ear assembly includes a bushing assembly, an ear piece and a bolt connector, the bushing assembly is rotatably disposed on the leaf spring bracket piece, the ear piece is disposed on at least one axial side of the bushing assembly, and the bolt connector passes through the ear piece and the bushing assembly and rotatably connects the ear assembly to the leaf spring bracket piece.

[0011] In some examples of the present invention, there are two lifting ear members, and the two lifting ear members are respectively arranged on two axial sides of the bushing member.

[0012] In some examples of the present invention, the ear piece includes a main body and a narrowed portion, the narrowed portion is arranged on one side of the length direction of the main body, and the width of the narrowed portion is smaller than the width of the main body, so that the limiting groove is formed between the narrowed portion and the main body, and the limiting groove is provided with an arc-shaped guide portion in the part between the narrowed portion and the main body.

[0013] In some examples of the present invention, the leaf spring bracket member is provided with a through hole, and the bushing member is provided in the through hole and is loosely fitted with the through hole.

[0014] In some examples of the present invention, the leaf spring bracket member includes a connecting plate portion and a fixed block portion, the connecting plate is arranged on one side of the fixed block and is suitable for being connected to the vehicle frame, the fixed block is rotatably connected to the first end of the lifting ear assembly, and a reinforcing rib is arranged between the fixed block and the connecting plate.

[0015] In some examples of the present invention, the connecting plate is provided with connecting holes, which are suitable for corresponding to the through holes on the frame and are connected and fixed by fasteners. There are multiple connecting holes, and the multiple connecting holes are arranged at intervals on the connecting plate.

[0016] A vehicle according to an embodiment of the present invention includes the leaf spring protection device described above.

[0017] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which: Figure 1 is a partial schematic diagram of a leaf spring protection device according to an embodiment of the present invention; Figure 2 is a partial schematic diagram of a leaf spring protection device according to an embodiment of the present invention; Figure 3 is a partial schematic diagram of a leaf spring protection device according to an embodiment of the present invention; Figure 4 is a partial exploded view of a leaf spring protection device according to an embodiment of the present invention; Figure 5 2 is a partial schematic diagram of a leaf spring bracket according to an embodiment of the present invention.

[0019] Reference numerals: 100. Leaf spring protection device; 10. Leaf spring bracket; 101. Rotation limiting protrusion; 1011. First rotation limiting protrusion; 1012. Second rotation limiting protrusion; 102. Through hole; 103. Connecting plate; 1031. Connecting hole; 104. Fixing block; 105. Reinforcing rib; 20. Lifting ear assembly; 201. Positioning groove; 202. First central axis; 203. Second central axis; 204. Bushing; 205. Lifting ear; 2051. Main body; 2052. Narrowing portion; 2053. Arc-shaped guide portion; 206. Bolt connector; 30. Leaf spring. DETAILED DESCRIPTION

[0020] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention will be described in detail below.

[0021] Reference below Figure 1-Figure 5 The leaf spring protection device 100 according to an embodiment of the present invention will be described. The leaf spring protection device 100 may be applied to a vehicle.

[0022] Combine Figure 1-Figure 5 As shown, the leaf spring protection device 100 according to the present invention may primarily include: a leaf spring bracket 10 and a lifting eye assembly 20. The first end of the leaf spring bracket 10 is adapted to be connected to the vehicle frame. This not only allows the leaf spring 30 to be mounted on the vehicle frame via the leaf spring bracket 10, but also provides a reliable support point for the leaf spring 30, ensuring that the leaf spring 30 maintains its correct position and posture during vehicle travel. This allows the leaf spring 30 to effectively provide cushioning and vibration reduction, thereby enhancing vehicle driving stability and ride comfort.

[0023] Furthermore, the first end of the lifting ear assembly 20 is rotatably connected to the second end of the leaf spring bracket 10, and the second end of the lifting ear assembly 20 is suitable for being connected to the leaf spring 30. Limiting grooves 201 are provided on both sides of the first end of the lifting ear assembly 20, and the leaf spring bracket 10 is provided with rotation limiting protrusions 101 on both sides corresponding to the rotation direction of the first end of the lifting ear assembly 20. The rotation limiting protrusions 101 are selectively limited and matched with the limiting grooves 201 to limit the maximum rotation angle of the lifting ear assembly 20 relative to the leaf spring bracket 10. Specifically, during the driving of the vehicle, the lifting ear assembly 20 will rotate to a certain extent relative to the leaf spring bracket component 10. When the limiting groove 201 on the lifting ear assembly 20 is limited and matched with the rotation limiting protrusion 101 on the leaf spring bracket component 10, the rotation of the lifting ear assembly 20 can be limited. Therefore, by selectively limiting the rotation limiting protrusion 101 and the limiting groove 201, not only can the maximum rotation angle of the lifting ear assembly 20 relative to the leaf spring bracket component 10 be limited during the normal driving of the vehicle, the stability and comfort of the vehicle during normal driving can be improved, and the maximum rotation angle of the lifting ear assembly 20 relative to the leaf spring bracket component 10 can be limited after the leaf spring 30 breaks, and then the longitudinal displacement of the axle can be reduced after the leaf spring 30 breaks, which can improve the reliability and safety of the vehicle.

[0024] In addition, compared with the prior art, in the embodiment of the present invention, it is only necessary to set limiting grooves 201 on both sides of the first end of the lifting ear assembly 20, and rotation limiting protrusions 101 are correspondingly set on the two side parts of the leaf spring bracket member 10 corresponding to the rotation direction of the first end of the lifting ear assembly 20. There is no need to add additional components to limit the rotation range of the lifting ear assembly 20 relative to the leaf spring bracket member 10. Therefore, the structure of the leaf spring protection device 100 in the embodiment of the present invention is simpler and easier to assemble.

[0025] Therefore, by selectively limiting the rotation limit protrusion 101 on the leaf spring bracket 10 and the limit groove 201 on the lifting ear assembly 20, the maximum rotation angle of the lifting ear assembly 20 relative to the leaf spring bracket 10 is limited. This not only reduces the longitudinal displacement of the axle after the leaf spring 30 breaks, thereby improving the stability and safety of the vehicle, but also the leaf spring bracket 10 has a simple structure and is easy to assemble.

[0026] Combine Figure 1 、 Figure 3 and Figure 5As shown, the rotation limiting protrusion 101 is integrally formed with the leaf spring bracket 10. Specifically, the rotation limiting protrusions 101 are provided on both sides of the leaf spring bracket 10 corresponding to the rotation direction of the first end of the lifting ear assembly 20. By integrally forming the rotation limiting protrusions 101 with the leaf spring bracket 10, not only can the structural strength of the rotation limiting protrusions 101 and the leaf spring bracket 10 as a whole be improved, the stability and reliability of the structural arrangement of the rotation limiting protrusions 101 be improved, and the rotation limiting protrusions 101 be prevented from falling off the leaf spring bracket 10, but the assembly process of the rotation limiting protrusions 101 can also be reduced, and the number of parts on the leaf spring bracket 10 can be reduced, thereby improving the production efficiency of the rotation limiting protrusions 101 and the leaf spring bracket 10 as a whole, and reducing the production cost and weight of the rotation limiting protrusions 101 and the leaf spring bracket 10 as a whole.

[0027] Combine Figure 1 、 Figure 2 and Figure 3 As shown, the two rotation limit protrusions 101 are set as the first rotation limit protrusion 1011 and the second rotation limit protrusion 1012 respectively. When the lifting ear assembly 20 is limited and matched with the first rotation limit protrusion 1011, the central axis of the lifting ear assembly 20 extending in the length direction is set as the first central axis 202. When the lifting ear assembly 20 is limited and matched with the second rotation limit protrusion 1012, the central axis of the lifting ear assembly 20 extending in the length direction is set as the second central axis 203. An angle α is formed between the first central axis 202 and the second central axis 203, and α satisfies the relationship: 30°≤α≤40°.

[0028] Specifically, if the leaf spring 30 is not broken, when the angle formed between the first central axis 202 and the second central axis 203 is too small, the rotation range of the lifting ear assembly 20 relative to the leaf spring bracket 10 will be too small, which will reduce the buffering performance and shock absorption performance of the leaf spring 30, thereby not only reducing the vehicle's maneuverability, but also causing more road excitation to be directly transmitted to the vehicle body, which will reduce the vehicle's comfort; when the angle formed between the first central axis 202 and the second central axis 203 is too large, not only will the wear between the leaf spring bracket 10 and the lifting ear assembly 20 be aggravated, but it may also cause the vehicle body to shake or tilt excessively, affecting vehicle safety.

[0029] If the leaf spring 30 breaks, when the angle formed between the first central axis 202 and the second central axis 203 is too small, the lifting eye assembly 20 or the leaf spring bracket 10 may be deformed or broken due to the longitudinal displacement of the axle, which will reduce the stability and reliability of the lifting eye assembly 20 or the leaf spring bracket 10; when the angle formed between the first central axis 202 and the second central axis 203 is too large, the longitudinal displacement of the axle may still be large.

[0030] Therefore, the angle formed between the first central axis 202 and the second central axis 203 is not less than 30 degrees and not more than 40 degrees. This not only enables the leaf spring 30 to effectively play a buffering and vibration reduction role during vehicle driving to improve the vehicle's driving stability and ride comfort, but also prevents excessive bumps or tilting of the vehicle body to improve the vehicle's maneuverability and safety. It can also reduce or prevent wear between the leaf spring bracket 10 and the lifting ear assembly 20, and extend the service life of the lifting ear protection device. In addition, after the leaf spring 30 breaks, the stability and reliability of the lifting ear assembly 20 and the leaf spring bracket 10 can be improved, and the maximum rotation angle of the lifting ear assembly 20 relative to the leaf spring bracket 10 can be limited, thereby reducing the longitudinal displacement of the axle and improving the stability and safety of vehicle driving.

[0031] Combine Figure 1 、 Figure 3 and Figure 4 As shown, the ear assembly 20 includes a bushing assembly 204, an ear member 205 and a bolt connector 206. The bushing assembly 204 is rotatably arranged on the leaf spring bracket member 10. The ear member 205 is arranged on at least one axial side of the bushing assembly 204. The bolt connector 206 passes through the ear member 205 and the bushing assembly 204 and rotatably connects the ear assembly 20 to the leaf spring bracket member 10.

[0032] Specifically, the bushing kit 204 has certain elastic properties, the bushing kit 204 passes through the leaf spring bracket member 10, and the bushing kit 204 is rotatably set on the leaf spring bracket member 10, the ear member 205 is set on at least one axial side of the bushing kit 204, and the bolt connection member 206 passes through the ear member 205 and the bushing kit 204 and rotatably connects the ear assembly 20 to the leaf spring bracket member 10. This not only makes the connection between the ear assembly 20 and the leaf spring bracket member 10 simple, direct, stable and reliable, but also facilitates the installation and disassembly between the ear assembly 20 and the leaf spring bracket member 10. In addition, the bushing kit 204 can also make the rotation between the ear assembly 20 and the leaf spring bracket member 10 smoother, and absorb part of the energy transmitted between the ear assembly 20 and the leaf spring bracket member 10, which can improve the vehicle's driving stability and riding comfort.

[0033] Combine Figure 1 、 Figure 3 and Figure 4As shown, there are two lifting ear members 205, which are respectively arranged on both axial sides of the bushing member 204. Specifically, the leaf spring bracket member 10 and the leaf spring 30 both have certain dimensions in the axial direction. By arranging the two lifting ear members 205 on both axial sides of the bushing member 204, the structural strength and bending resistance of the lifting ear assembly 20 can be improved. The stability of the lifting ear assembly 20 and the leaf spring bracket member 10 when they rotate relative to each other, as well as the stability of the leaf spring 30 and the lifting ear assembly 20 when they rotate relative to each other, can be improved, and the lifting ear assembly 20 can be prevented from being deformed or skewed when the lifting ear assembly 20 and the leaf spring bracket member 10 rotate relative to each other. The leaf spring 30 or the lifting ear assembly 20 can also be prevented from being deformed or skewed when the leaf spring 30 and the lifting ear assembly 20 rotate relative to each other. Further, the stability and reliability of the leaf spring protection device 100 can be improved.

[0034] Combine Figure 1 、 Figure 3 and Figure 4 As shown, the ear piece 205 includes a main body portion 2051 and a narrowed portion 2052. The narrowed portion 2052 is arranged on one side of the length direction of the main body portion 2051. The width of the narrowed portion 2052 is smaller than the width of the main body portion 2051, so that a limiting groove 201 is formed between the narrowed portion 2052 and the main body portion 2051. The limiting groove 201 is provided with an arc-shaped guide portion 2053 in the part between the narrowed portion 2052 and the main body portion 2051.

[0035] Specifically, the narrowing portion 2052 is arranged on one side of the length direction of the main body 2051, and the width of the narrowing portion 2052 is smaller than the width of the main body 2051. A limiting groove 201 is formed at the position where the width of the narrowing portion 2052 is smaller than the width of the main body 2051 to selectively limit and cooperate with the rotation limiting protrusion 101 on the leaf spring bracket 10, thereby limiting the maximum rotation angle of the ear assembly 20 relative to the leaf spring bracket 10.

[0036] Furthermore, the center of the narrowing portion 2052 in the width direction and the center of the main body 2051 in the width direction are on an extension line in the length direction, that is, the main body 2051 and the narrowing portion 2052 of the ear piece 205 are axially symmetrical structures in the width direction, and the width of the narrowing portion 2052 is smaller than the width of the main body 2051. Therefore, a limiting groove 201 is formed on both sides of the narrowing portion 2052, and the two limiting grooves 201 correspond to the two rotation limiting protrusions 101 respectively.

[0037] Furthermore, the limiting groove 201 is provided with an arc-shaped guide portion 2053 in the portion between the narrowed portion 2052 and the main body portion 2051, so that the arc-shaped guide portion 2053 can play a guiding role when the limiting groove 201 is limitedly matched with the rotation limiting protrusion 101, so as to guide the rotation path of the lifting ear assembly 20, so that the rotation between the lifting ear assembly 20 relative to the leaf spring bracket 10 is more stable and accurate.

[0038] Combine Figure 1 、 Figure 3 and Figure 4 As shown, the leaf spring support member 10 is provided with a through hole 102, and the bushing member 204 is provided in the through hole 102 and has a clearance fit with the through hole 102. Specifically, by providing the bushing member 204 in the through hole 102 and having a clearance fit with the through hole 102, not only can the interference fit between the bushing member 204 and the through hole 102, which causes difficulty in installing the bolt connector 206, but also the problem of shaking of the bolt connector 206 due to excessive clearance between the bushing member 204 and the through hole 102 can be avoided, the stability and reliability of the structure of the lifting ear assembly 20 can be improved, and the bushing member 204 can be allowed to rotate relative to the leaf spring support member 10, thereby making the relative rotation between the lifting ear assembly 20 and the leaf spring support member 10 smoother. In addition, the wear of the bolt connector 206 and the lifting ear assembly 20, and the wear between the bolt connector 206 and the leaf spring support member 10 can be reduced, thereby extending the service life of the leaf spring protection device 100.

[0039] In some embodiments of the present invention, the through hole 102 may be a threaded hole, and the bolt connector 206 may be a screw having a size matching that of the through hole 102 .

[0040] Combine Figure 1 、 Figure 3 and Figure 4As shown, the leaf spring bracket member 10 includes a connecting plate portion 103 and a fixed block portion 104. The connecting plate portion 103 is arranged on one side of the fixed block portion 104 and is suitable for being connected to the vehicle frame. The fixed block portion 104 is rotatably connected to the first end of the lifting ear assembly 20. A reinforcing rib 105 is arranged between the fixed block portion 104 and the connecting plate portion 103. Specifically, the connecting plate portion 103 is arranged on one side of the fixing block portion 104 and is suitable for being connected to the vehicle frame. The fixing block portion 104 is rotatably connected to the first end of the lifting ear assembly 20, and the axial size of the fixing block portion 104 is larger than the axial size of the connecting plate portion 103. This not only facilitates the connection and fixation of the leaf spring bracket member 10 to the vehicle frame, and ensures the stability and reliability of the connection and fixation of the leaf spring bracket member 10 to the vehicle frame, but also increases the axial size of the second end of the leaf spring bracket member 10, so that the axial size of the fixing block portion 104 of the leaf spring bracket member 10 is equal to the axial size of the leaf spring 30, thereby facilitating the arrangement of the lifting ear assembly 20 and improving the stability of the lifting ear assembly 20 when it rotates relative to the leaf spring bracket member 10.

[0041] Furthermore, a reinforcing rib 105 is provided between the fixing block portion 104 and the connecting plate portion 103, and the reinforcing rib 105 and the two side edges in the width direction of the second end of the leaf spring bracket member 10 form a triangular structure. This not only improves the structural strength of the leaf spring bracket member 10 and prevents the leaf spring bracket member 10 from being deformed or broken due to low structural strength, but also makes the force applied to the leaf spring bracket member 10 more uniform, and prevents the leaf spring bracket member 10 from being deformed or broken due to stress concentration.

[0042] Combine Figure 1 、 Figure 3 and Figure 4 As shown, the connecting plate portion 103 is provided with connecting holes 1031 , which are suitable for corresponding to the through holes on the vehicle frame and are connected and fixed by fasteners. There are multiple connecting holes 1031 , and the multiple connecting holes 1031 are arranged at intervals on the connecting plate portion 103 .

[0043] Specifically, a connecting hole 1031 is provided on the connecting plate portion 103, and a through-hole is provided on the frame. The connecting hole 1031 on the connecting plate portion 103 and the through-hole on the frame correspond in structure and position. By sequentially passing the fasteners through the connecting holes 1031 on the connecting plate portion 103 and the through-holes on the frame, the connecting plate portion 103 and the frame are connected and fixed. This not only makes the connection and fixation between the connecting plate portion 103 and the frame simple, direct, stable and reliable, but also facilitates the installation and disassembly between the connecting plate portion 103 and the frame, and facilitates the subsequent maintenance and inspection of the leaf spring bracket component 10.

[0044] Furthermore, there are multiple connecting holes 1031, and the multiple connecting holes 1031 are arranged at intervals on the connecting plate portion 103. There are also multiple perforations on the frame. The multiple connecting holes 1031 and the multiple perforations are arranged in a one-to-one correspondence, that is, each connecting hole 1031 has at least one perforation corresponding to it. In this way, the force at the connection between the connecting plate portion 103 and the frame can be more uniform, and the connection between the connecting plate portion 103 and the frame can be prevented from being deformed or broken due to stress concentration. The situation where the connection between the connecting plate portion 103 and the frame fails due to damage to a certain connecting hole 1031 or perforation can be prevented, and the stability and reliability of the connection and fixation between the connecting plate portion 103 and the frame can be further improved.

[0045] In some embodiments of the present invention, the connecting hole 1031 and the through-hole are standard holes, and the fasteners used to penetrate the connecting hole 1031 and the through-hole are standard parts, which not only improves the versatility of the leaf spring bracket component 10, facilitates the connection and fixation between the vehicle frame and the leaf spring bracket component 10, but also reduces the development cost and use cost of the leaf spring bracket component 10.

[0046] In some embodiments of the present invention, the connection hole 1031 and the through hole may be threaded holes, and the fasteners used to penetrate the connection hole 1031 and the through hole may be screws that match the threaded holes.

[0047] The vehicle according to the present invention may primarily include the aforementioned leaf spring protection device 100. Specifically, because the leaf spring protection device 100 has a simpler and more reliable structure and excellent performance, its application in a vehicle can reduce longitudinal displacement of the vehicle body after a leaf spring 30 breaks, thereby improving the vehicle's stability and safety.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0049] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0050] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A leaf spring protection device, characterized in that: include: A leaf spring bracket member (10), wherein a first end of the leaf spring bracket member (10) is suitable for being connected to a vehicle frame; A lifting ear assembly (20), wherein the first end of the lifting ear assembly (20) is rotatably connected to the second end of the leaf spring bracket (10), and the second end of the lifting ear assembly (20) is suitable for being connected to the leaf spring (30). Limiting grooves (201) are provided on both sides of the first end of the lifting ear assembly (20), and the leaf spring bracket (10) is provided with rotation limiting protrusions (101) on both sides corresponding to the rotation direction of the first end of the lifting ear assembly (20). The rotation limiting protrusions (101) are selectively limitedly matched with the limiting grooves (201) to limit the maximum rotation angle of the lifting ear assembly (20) relative to the leaf spring bracket (10).

2. The leaf spring protection device according to claim 1, characterized in that: The rotation limiting protrusion (101) and the leaf spring bracket (10) are integrally formed.

3. The leaf spring protection device according to claim 1, characterized in that: The two rotation limiting protrusions (101) are respectively set to be a first rotation limiting protrusion (1011) and a second rotation limiting protrusion (1012); when the lifting ear assembly (20) is limitedly matched with the first rotation limiting protrusion (1011), the central axis of the lifting ear assembly (20) extending in the length direction is set to be a first central axis (202); when the lifting ear assembly (20) is limitedly matched with the second rotation limiting protrusion (1012), the central axis of the lifting ear assembly (20) extending in the length direction is set to be a second central axis (203); an angle α is formed between the first central axis (202) and the second central axis (203), and α satisfies the relationship: 30°≤α≤40°.

4. The leaf spring protection device according to claim 1, characterized in that: The ear assembly (20) includes a bushing assembly (204), an ear piece (205) and a bolt connection piece (206), wherein the bushing assembly (204) is rotatably arranged on the leaf spring support piece (10), the ear piece (205) is arranged on at least one axial side of the bushing assembly (204), and the bolt connection piece (206) passes through the ear piece (205) and the bushing assembly (204) and rotatably connects the ear assembly (20) to the leaf spring support piece (10).

5. The leaf spring protection device according to claim 4, characterized in that: There are two lifting ear pieces (205), and the two lifting ear pieces (205) are respectively arranged on two axial sides of the liner piece (204).

6. The leaf spring protection device according to claim 4, characterized in that: The ear piece (205) comprises a main body (2051) and a narrowed portion (2052), wherein the narrowed portion (2052) is arranged on one side of the main body (2051) in the length direction, and the width of the narrowed portion (2052) is smaller than the width of the main body (2051), so that the limiting groove (201) is formed between the narrowed portion (2052) and the main body (2051), and the limiting groove (201) is provided with an arc-shaped guide portion (2053) in the portion between the narrowed portion (2052) and the main body (2051).

7. The leaf spring protection device according to claim 4, characterized in that: The leaf spring bracket member (10) is provided with a through hole (102), and the bushing member (204) is provided in the through hole (102) and is clearance-matched with the through hole (102).

8. The leaf spring protection device according to claim 1, characterized in that: The leaf spring bracket (10) comprises a connecting plate portion (103) and a fixing block portion (104), wherein the connecting plate portion (103) is arranged on one side of the fixing block portion (104) and is suitable for being connected to a vehicle frame, the fixing block portion (104) is rotatably connected to a first end of the lifting eye assembly (20), and a reinforcing rib (105) is provided between the fixing block portion (104) and the connecting plate portion (103).

9. The leaf spring protection device according to claim 8, characterized in that: The connecting plate portion (103) is provided with a connecting hole (1031), the connecting hole (1031) being adapted to correspond to a through-hole on the vehicle frame and being connected and fixed via a fastener, and the connecting holes (1031) are multiple, and the multiple connecting holes (1031) are spaced apart on the connecting plate portion (103).

10. A vehicle, characterized in that: The leaf spring protection device comprises the leaf spring protection device according to any one of claims 1 to 9.

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