Leaf spring limiting device for vehicle and vehicle

Abstract

The present invention discloses a leaf spring limiting device for a vehicle and a vehicle. The leaf spring limiting device includes: a first fixing part which is supported on the leaf spring of the vehicle; a second fixing part which is supported on the vehicle body of the vehicle; a connecting part, a first end of the connecting part is connected to the first fixing part, a second end of the connecting part is connected to the second fixing part, and the connecting part is supported between the first fixing part and the second fixing part to limit the deformation of the leaf spring; wherein the length of the connecting part is adjustable and / or the connection angle between at least one of the first fixing part and the second fixing part and the connecting part is adjustable. According to the leaf spring limiting device for a vehicle of the present invention, the leaf spring limiting device is convenient for installation and disassembly, simplifies the troubleshooting process, reduces the workload and working time of the staff, and improves the efficiency of troubleshooting.

Description

Technical Field

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

[0002] In the related art, when a newly developed vehicle model is subjected to a braking performance test, the vehicle often has a brake deviation fault. The brake deviation fault can be caused by a variety of reasons, such as inconsistent braking force between the left and right front brakes, inconsistent braking force between the left and right rear brakes, large interference in the suspension steering movement, or S deformation of the suspension leaf spring. Among them, the influence of the S deformation of the suspension system on the brake deviation is the most difficult to identify. Most of the staff judge by replacing the left front leaf spring and the right front leaf spring. Since the front leaf spring connects the frame and the front axle, there are problems such as cumbersome disassembly and assembly, long adjustment and replacement time, which increases the workload and working time of the staff. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a leaf spring limiter for a vehicle, which is easy to install and disassemble, and in the experimental process, the leaf spring limiter can effectively prevent the leaf spring from deforming during the braking process, thereby eliminating the factor of leaf spring deformation and using the elimination method to find the cause of the brake deviation failure, simplifying the fault detection process, reducing the workload and working time of the staff, and improving the efficiency of fault detection.

[0004] The present invention also provides a vehicle having the leaf spring limiting device.

[0005] According to the leaf spring limiting device for a vehicle of the present invention, the leaf spring limiting device includes: a first fixing portion, the first fixing portion is supported on the leaf spring of the vehicle; a second fixing portion, the second fixing portion is supported on the body of the vehicle; a connecting portion, a first end of the connecting portion is connected to the first fixing portion, a second end of the connecting portion is connected to the second fixing portion, and the connecting portion is supported between the first fixing portion and the second fixing portion to limit the deformation of the leaf spring; wherein the length of the connecting portion is adjustable and / or the connection angle between at least one of the first fixing portion and the second fixing portion and the connecting portion is adjustable.

[0006] The leaf spring limiting device for a vehicle according to the present invention, the first fixing part of the leaf spring limiting device can be fixed to the leaf spring of the vehicle, and the second fixing part can be fixed to the vehicle body. Therefore, the leaf spring limiting device can effectively prevent the leaf spring of the vehicle from deforming during braking. The leaf spring limiting device is convenient for installation and disassembly. And during the experiment, the leaf spring limiting device can effectively prevent the leaf spring from deforming during braking, thereby eliminating the factor of leaf spring deformation and using the elimination method to find the cause of the braking deviation fault, simplifying the fault troubleshooting process, reducing the workload and working time of the staff, and improving the efficiency of fault troubleshooting.

[0007] According to an embodiment of the present invention, the first fixing part includes a first limiting member and a second limiting member spaced apart from each other, and the distance between the first limiting member and the second limiting member is adjustable to selectively clamp the leaf spring.

[0008] According to an embodiment of the present invention, the first fixing part further includes: a bottom plate; a first side plate and a second side plate, the first side plate and the second side plate are respectively arranged on both sides of the bottom plate in the width direction and extend away from the bottom plate, and the first side plate and the second side plate are arranged opposite to each other; wherein the first limiting member is movably arranged on the first side plate, and the second limiting member is movably arranged on the second side plate.

[0009] According to an embodiment of the present invention, a first threaded hole threadedly engaged with the first limiting member is provided on the first side plate, and a second threaded hole threadedly engaged with the second limiting member is provided on the second side plate.

[0010] According to an embodiment of the present invention, the second fixing part is configured as a limiting disc, and the limiting disc is rotatably arranged at the second end of the connecting part around the axial direction and / or the radial direction of the limiting disc.

[0011] According to an embodiment of the present invention, a ball head is provided on one of the bottom plate and one end of the connecting part, and a ball head groove adapted to receive the ball head is provided on the other of the bottom plate and one end of the connecting part, and the ball head is rotatably arranged in the ball head groove.

[0012] According to an embodiment of the present invention, the connecting part includes: a screw rod, one end of the screw rod is connected to the first fixing part; an adjusting nut, the adjusting nut is threadedly engaged with the screw rod and the second fixing part is arranged on the side of the adjusting nut away from the first fixing part, and the adjusting nut is threadedly engaged with the screw rod.

[0013] According to an embodiment of the present invention, a second ball head is provided at one end of the screw rod, and a second ball head groove adapted to cooperate with the second ball head is provided on the first fixing part.

[0014] According to an embodiment of the present invention, the connecting portion further includes: a lock nut, which is threadedly engaged with the screw rod and selectively abuts against the adjusting nut.

[0015] The vehicle according to the present invention will be briefly described below.

[0016] The vehicle according to the present invention is provided with the leaf spring limiting device of the above embodiment. Since the vehicle according to the present invention is provided with the leaf spring limiting device of the above embodiment, when the vehicle conducts a braking performance test, the leaf spring limiting device can prevent the leaf spring of the vehicle from deforming, thereby eliminating the possibility of the leaf spring of the vehicle deforming and causing braking deviation. The troubleshooting of the vehicle is more convenient, reducing the workload and working time of the staff and improving the efficiency of troubleshooting.

[0017] The additional aspects and advantages of the present invention will be partially given in the following description, partially become apparent from the following description, or be understood through the 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 be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0019] Figure 1 is a schematic structural diagram of a leaf spring limiting device according to an embodiment of the present invention;

[0020] Figure 2 is a schematic structural diagram of the leaf spring limiting device according to an embodiment of the present invention in another direction;

[0021] Figure 3 is a schematic diagram of the cooperation of the leaf spring limiting device according to an embodiment of the present invention with a leaf spring and a vehicle frame.

[0022] Reference numerals:

[0023] Leaf spring limiting device 10, first fixing portion 11, first limiting member 111, second limiting member 112,

[0024] Bottom plate 113, first side plate 114, second side plate 115, second fixing portion 12,

[0025] Connecting portion 13, lock nut 131, adjusting nut 132, leaf spring 20, vehicle frame 30. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0027] Reference will be made below to Figures 1 - 3 Describe a leaf spring limiting device 10 for a vehicle according to an embodiment of the present invention. The leaf spring limiting device 10 includes a first fixing portion 11, a second fixing portion 12, and a connecting portion 13. The first fixing portion 11 is supported on the leaf spring of the vehicle, the second fixing portion 12 is supported on the vehicle body, the first end of the connecting portion 13 is connected to the first fixing portion 11, the first end of the connecting portion 13 is connected to the second fixing portion 12, and the connecting portion 13 is supported between the first fixing portion 11 and the second fixing portion 12 to limit the deformation of the leaf spring, wherein the length of the connecting portion is adjustable and / or the connection angle between at least one of the first fixing portion and the second fixing portion and the connecting portion is adjustable.

[0028] In the related art, when a newly developed vehicle model undergoes a braking performance test, the vehicle often experiences a braking deviation fault. The braking deviation fault can be caused by various reasons, such as inconsistent braking forces of the left and right front brakes, inconsistent braking forces of the left and right rear brakes, a large amount of suspension steering movement interference, or deformation of the suspension leaf spring S. Among them, the influence of the S deformation of the suspension system on the braking deviation is the most difficult to identify. Most of the staff judge by replacing the left front leaf spring and the right front leaf spring. Since the front leaf spring connects the vehicle frame and the front axle, there are problems such as cumbersome disassembly and assembly, adjustment of parts, and long replacement time, which increase the workload and working time of the staff.

[0029] Specifically, the leaf spring limiting device 10 includes a first fixing portion 11, a second fixing portion 12, and a connecting portion 13. The first fixing portion 11 is supported on the leaf spring 20 of the vehicle, and one end of the first fixing portion 11 can be fixed to the leaf spring of the vehicle, so as to ensure that one end of the leaf spring limiting device 10 can be fixed to the leaf spring of the vehicle. Among them, the first fixing portion 11 and the leaf spring 20 can be fixed by bolts and nuts.

[0030] The second fixing portion 12 is supported on the vehicle body, and the second fixing portion 12 can be fixed to the vehicle body. Specifically, the second fixing portion 12 can be fixed to the vehicle frame 30, so as to ensure that the other end of the leaf spring limiting device 10 can be fixed to the vehicle body.

[0031] The first end of the connecting part 13 is fixed to the first fixing part 11, and the second end of the connecting part 13 is fixed to the second fixing part 12. The connecting part 13 can be supported between the first fixing part 11 and the second fixing part 12 and is connected to the first fixing part 11 and the second fixing part 12. Since the first fixing part 11 can be fixed to the leaf spring of the vehicle and the second fixing part 12 can be fixed to the vehicle body, by fixing the connecting part 13 to the first fixing part 11 and the second fixing part 12, the relative static state between the leaf spring of the vehicle and the vehicle body can be ensured, and the deformation of the leaf spring can be further restricted.

[0032] Wherein, the length of the connecting part 13 can be adjusted to be suitable for fixing the first end and the second end of the connecting part 13 to the first fixing part 11 and the second fixing part 12 respectively, or the connection angle between at least one of the first fixing part 11 and the second fixing part 12 and the connecting part 13 is adjustable to ensure that the first end and the second end of the connecting part 13 are fixed to the first fixing part 11 and the second fixing part 12 respectively, or while the length of the connecting part 13 can be adjusted, the connection angle between at least one of the first fixing part 11 and the second fixing part 12 and the connecting part 13 can be adjusted. Such a setting enables the leaf spring limiting device 10 to be fixed to the vehicle body and the leaf spring with different inclination angles, improving the applicability of the leaf spring limiting device 10.

[0033] During the braking test of the vehicle, by fixing the leaf spring limiting device 10 between the leaf spring of the vehicle and the vehicle body, the deformation of the leaf spring of the vehicle during braking can be effectively prevented, thereby eliminating the possibility of braking deviation caused by the deformation of the leaf spring of the vehicle. Moreover, the installation and disassembly of the leaf spring limiting device 10 are convenient, further simplifying the process of troubleshooting, reducing the workload and working time of the staff.

[0034] In short, for the leaf spring limiting device 10 for a vehicle according to the present invention, the first fixing part 11 of the leaf spring limiting device 10 can be fixed to the leaf spring of the vehicle, and the second fixing part 12 can be fixed to the vehicle body. Therefore, the leaf spring limiting device 10 can effectively prevent the leaf spring of the vehicle from deforming during braking. The leaf spring limiting device 10 is easy to install and disassemble. And during the experiment, the leaf spring limiting device 10 can effectively prevent the leaf spring from deforming during braking, thereby eliminating the factor of leaf spring deformation and using the elimination method to find the cause of the braking deviation fault, simplifying the process of troubleshooting, reducing the workload and working time of the staff, and improving the efficiency of troubleshooting.

[0035] According to an embodiment of the present invention, the first fixing portion 11 includes a first limiting member 111 and a second limiting member 112 that are spaced apart from each other. The staff can adjust the distance between the first limiting member 111 and the second limiting member 112 so that the leaf spring limiting device 10 can be selectively clamped on the leaf spring. Further, by adjusting the distance between the first limiting member 111 and the second limiting member 112, the leaf spring limiting device 10 can be clamped on leaf springs of different widths, making the application range of the leaf spring limiting device 10 wider during the braking test.

[0036] According to an embodiment of the present invention, the first fixing portion 11 further includes a bottom plate 113, a first side plate 114, and a second side plate 115. The bottom plate 113 is supported on the leaf spring of the vehicle. The first side plate 114 and the second side plate 115 are respectively disposed on both sides of the bottom plate 113 in the width direction, and the first side plate 114 and the second side plate 115 respectively extend in a direction away from the bottom plate 113. The first side plate 114 and the second side plate 115 are disposed opposite to each other. Among them, the first limiting member 111 is movably disposed on the first side plate 114, and the second limiting member 112 is movably disposed on the second side plate 115. By moving the first limiting member 111 and the second limiting member 112 to adjust the distance between the first limiting member 111 and the second limiting member 112, the leaf spring limiting device 10 can be clamped on leaf springs of different widths.

[0037] According to an embodiment of the present invention, a first threaded hole that is in threaded cooperation with the first limiting member 111 is provided on the first side plate 114, and a second threaded hole that is in threaded cooperation with the second limiting member 112 is provided on the second side plate 115. Specifically, the first limiting member 111 and the second limiting member 112 can include nuts and handles. The nuts are fixed on the handles, and the nut of the first limiting member 111 is in threaded cooperation with the first threaded hole, and the nut of the second limiting member 112 is in threaded cooperation with the second threaded hole.

[0038] The staff can rotate the handle of the first limiting member 111 to make the nut of the first limiting member 111 rotate in the first threaded hole. By rotating the handle of the second limiting member 112, the nut of the second limiting member 112 can be made to rotate in the second threaded hole to adjust the position of the first limiting member 111 and the position of the second limiting member 112, and further adjust the distance between the first limiting member 111 and the second limiting member 112.

[0039] According to an embodiment of the present invention, a ball head is provided on one of the bottom plate 113 and one end of the connecting portion 13, and a ball head groove adapted to receive the ball head is provided on the other of the bottom plate 113 and one end of the connecting portion 13. The ball head is rotatably provided in the ball head groove. By matching the ball head with the ball head groove, the ball head is rotatably received in the ball head groove, and the outer surface of the ball head abuts against the inner surface of the ball head groove to limit the movement of the ball head, so that the first fixing portion 11 is connected to the connecting portion 13. By rotating the ball head in the ball head groove, the angle between the connecting portion 13 and the second fixing portion 12 can be changed, so that the second fixing portion 12 can rotate freely relative to the axial direction or relative to the radial direction.

[0040] In some embodiments of the present invention, a ball head is provided on one of the second fixing portion 12 and one end of the connecting portion 13, and a ball head groove adapted to receive the ball head is provided on the other of the second fixing portion 12 and one end of the connecting portion 13. The ball head is rotatably provided in the ball head groove. By matching the ball head with the ball head groove, the ball head is rotatably received in the ball head groove to limit the movement of the ball head, so that the second fixing portion 12 is connected to the connecting portion 13.

[0041] According to an embodiment of the present invention, the second fixing portion 12 is configured as a limit disk. The contact area of the limit disk is large, and the limit disk can disperse the pressure on the vehicle body and make the force more uniform. Among them, the limit disk can rotate around the axis direction of the limit disk, and the limit disk is connected to the second end of the connecting portion 13. The limit disk can rotate freely in the axial direction and / or the radial direction to ensure that the limit disk can be evenly stressed under the included angle states of the lower planes of the frames of different suspensions.

[0042] According to an embodiment of the present invention, the length of the connecting portion 13 can be adjusted. The staff can adjust the length of the connecting portion 13, and then change the distance between the first fixing portion 11 and the second fixing portion 12, so that the leaf spring limiting device 10 is applicable to vehicles with different suspension heights.

[0043] According to an embodiment of the present invention, the connecting portion 13 includes a screw rod and an adjusting nut 132. One end of the screw rod is connected to the first fixing portion 11. The adjusting nut 132 is in threaded cooperation with the screw rod. The second fixing portion 12 is provided on the other side of the adjusting nut 132 away from the first fixing portion 11. Specifically, the screw rod is arranged inside the adjusting nut 132, and by rotating the adjusting nut 132, the adjusting nut 132 rotates relative to the screw rod, and the adjusting nut 132 and the screw rod move axially, thereby changing the length of the connecting portion 13.

[0044] According to an embodiment of the present invention, a second ball head is provided at one end of the screw rod. By matching the second ball head with the second ball head groove on the bottom plate 113 that receives the second ball head, the screw rod is connected to the first fixing portion 11.

[0045] According to an embodiment of the present invention, the connecting portion 13 further includes a locking nut 131. The locking nut 131 is in threaded engagement with the screw rod, and the locking nut 131 selectively abuts against the adjusting nut 132. The locking nut 131 has a locking function. When the staff adjusts the adjusting nut 132 to ensure that the first fixing portion 11 contacts the leaf spring of the vehicle and the second fixing portion 12 contacts the vehicle body, the staff adjusts the locking nut 131 to make the adjusting nut 132 relatively stationary with respect to the screw rod, so as to fix the adjusting nut 132 and the screw rod, prevent the length of the connecting portion 13 from changing after being stressed, and further improve the accuracy of troubleshooting for the leaf spring limiting device.

[0046] The vehicle according to the present invention will be briefly described below.

[0047] The vehicle according to the present invention is provided with the leaf spring limiting device 10 of the above embodiment. Since the vehicle according to the present invention is provided with the leaf spring limiting device 10 of the above embodiment, when the vehicle conducts a braking performance test, the leaf spring limiting device 10 can prevent the leaf spring of the vehicle from deforming, thereby eliminating the possibility of the leaf spring of the vehicle deforming and causing braking deviation. The troubleshooting of this vehicle is more convenient, reducing the workload and working time of the staff and improving the efficiency of troubleshooting.

[0048] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 construed as a limitation to the present invention.

[0049] In the description of the present invention, the "first feature" and "second feature" may include one or more of such features.

[0050] In the description of the present invention, "a plurality of" means two or more.

[0051] In the description of the present invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0052] In the description of the present invention, "above", "over" and "on" a second feature for a first feature include the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher level of height than the second feature.

[0053] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0054] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A leaf spring limiting device for vehicle braking performance tests, characterized in that, Comprising: A first fixing part (11), the first fixing part (11) being supported on the leaf spring (20) of the vehicle; A second fixing part (12), the second fixing part (12) being supported on the vehicle body; A connecting part (13), a first end of the connecting part (13) being connected to the first fixing part (11), a second end of the connecting part (13) being connected to the second fixing part (12), the connecting part (13) being supported between the first fixing part (11) and the second fixing part (12) to limit the deformation of the leaf spring; wherein The length of the connecting part (13) is adjustable or the connection angle between at least one of the first fixing part (11) and the second fixing part (12) and the connecting part (13) is adjustable; The connecting part (13) includes: A screw rod, one end of the screw rod being connected to the first fixing part (11); An adjusting nut (132), the adjusting nut (132) being in threaded fit with the screw rod and the second fixing part (12) being arranged on a side of the adjusting nut (132) away from the first fixing part (11); The connecting part (13) further includes: a locking nut (131), the locking nut (131) being in threaded fit with the screw rod and selectively abutting against the adjusting nut (132).

2. The leaf spring limiting device for vehicle braking performance test according to claim 1, wherein, The first fixing part (11) includes a first limiting member (111) and a second limiting member (112) spaced apart from each other, and the distance between the first limiting member (111) and the second limiting member (112) is adjustable to selectively clamp the leaf spring.

3. The leaf spring limit device for vehicle braking performance test according to claim 2, characterized in that, The first fixing part (11) further includes: A bottom plate (113); A first side plate (114) and a second side plate (115), the first side plate (114) and the second side plate (115) being respectively arranged on two sides of the bottom plate (113) in the width direction and extending in a direction away from the bottom plate (113), the first side plate (114) and the second side plate (115) being arranged opposite to each other; wherein The first limiting member (111) is movably arranged on the first side plate (114), and the second limiting member (112) is movably arranged on the second side plate (115).

4. The leaf spring limiting device for vehicle braking performance test according to claim 3, characterized in that, A first threaded hole in threaded fit with the first limiting member (111) is arranged on the first side plate (114), and a second threaded hole in threaded fit with the second limiting member (112) is arranged on the second side plate (115).

5. The leaf spring limiting device for vehicle braking performance test according to claim 1, characterized in that, The second fixing part (12) is configured as a limiting disc, and the limiting disc is rotatably arranged at the second end of the connecting part (13) around the axis direction and / or the radial direction of the limiting disc.

6. The leaf spring limiting device for vehicle braking performance test according to claim 5, characterized in that, A first ball head is arranged on one of the limiting disc and the second end of the connecting part, and a first ball head groove adapted to receive the first ball head is arranged on the other of the limiting disc and the second end of the connecting part (13), and the first ball head is rotatably arranged in the first ball head groove.

7. The leaf spring limit device for vehicle braking performance test according to claim 1, characterized in that, A second ball head is arranged at one end of the screw rod, and a second ball head groove cooperating with the second ball head is arranged on the first fixing part (11).

8. A vehicle, characterized in that, Including the leaf spring limiting device according to any one of claims 1-7.

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