CN114233805B

CN114233805B - Vehicle shock absorber

Info

Publication number: CN114233805B
Application number: CN202210185474.2A
Authority: CN
Inventors: 高勇
Original assignee: Xuzhou Miran Locomotive Parts Co ltd
Current assignee: Xuzhou Miran Locomotive Parts Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-05-03
Anticipated expiration: 2042-02-28
Also published as: CN114233805A

Abstract

The invention discloses a vehicle shock absorber, which belongs to the technical field of shock absorption and comprises a shell and a shaft body, wherein the shaft body is rotatably inserted into the shell, a gap is formed between the shell and the shaft body, an adjusting mechanism capable of sliding along the axial direction of the shell is arranged at the gap, and the shaft body can incline towards any direction around the adjusting mechanism; a plurality of annular damping units are superposed on two sides of the adjusting mechanism, inner rings of the damping units are abutted against the outer wall of the shaft body, and outer rings of the damping units are abutted against the inner wall of the shell; the damping units on one side of the adjusting mechanism form damping springs, one ends of the damping springs abut against the adjusting mechanism, and the other ends of the damping springs abut against the end portion of the shell. The adjusting mechanism can slide along the axis direction of the shaft body, and the damping units are arranged on two sides of the adjusting mechanism, so that the device can buffer and damp along the axis direction; the damping units are mutually overlapped, so that the axial and transverse buffering can be realized, and the damping effect is better.

Description

Vehicle shock absorber

Technical Field

The invention relates to a vehicle shock absorber, and belongs to the technical field of shock absorption.

Background

The automobile body is in the production course of working, need consider the shock attenuation buffering of axletree, ordinary axletree shock attenuation is for installing along axletree axis direction and sets up buffer, only has axial buffering, the upper and lower sense of vibration of automobile body can be reduced to this kind of buffering mode, but the vehicle is in the in-process of traveling, when the wheel rolled the barrier, can exert a horizontal impact force perpendicular or inclined to the axletree to the wheel, this kind of impact force promotes axletree and extrudees the outside casing of axletree, when the impact force is great or receive this impact force for a long time, the outside casing of axletree produces deformation, cause irreversible damage to the automobile body.

Disclosure of Invention

In view of the above problems with the prior art, the present invention provides a vehicle shock absorber, a universal shock absorbing axle, which is capable of cushioning in both an axial direction and a lateral direction.

In order to achieve the purpose, the invention adopts the following technical scheme: a vehicle shock absorber comprises a shell and a shaft body, wherein the shaft body is rotatably inserted into the shell, a gap is formed between the shell and the shaft body, an adjusting mechanism capable of sliding along the axial direction of the shell is installed at the gap, and the shaft body can incline towards any direction around the adjusting mechanism;

a plurality of annular damping units are overlapped on two sides of the adjusting mechanism, inner rings of the damping units are tightly abutted against the outer wall of the shaft body, and outer rings of the damping units are tightly abutted against the inner wall of the shell;

and the plurality of damping units positioned on one side of the adjusting mechanism form a damping spring, one end of the damping spring is tightly propped against the adjusting mechanism, and the other end of the damping spring is tightly propped against the end part of the shell.

Preferably, a through groove is formed in the adjusting mechanism, the inner wall of the through groove is a spherical surface, an annular protrusion is installed in the middle of the shaft body, the protrusion is arranged in the spherical surface, and the protrusion and the through groove are at least partially tangent.

Preferably, the adjusting mechanism comprises an outer ring and an inner ring, a cavity is arranged between the outer ring and the inner ring, a plurality of balls are arranged in the cavity, the penetrating groove is formed in the inner ring, and the outer ring is in contact with the inner wall of the shell.

Preferably, sealing plates are mounted on two sides of the outer ring and are in contact with the inner ring.

Preferably, the damping unit comprises a first ring body and a second ring body, the first ring body and the second ring body are both provided with a tip and two open ends, the open ends of the second ring body are abutted against the inner wall of the first ring body, the inner wall of the first ring body is provided with an opening, and the tips of the first ring body and the second ring body are abutted against the shaft body and the shell respectively.

Preferably, a gap is formed between the open end of the first ring body and the inner wall of the shell.

Preferably, the first ring body and the second ring body form a part of a parabola, a hyperbola or an ellipse in cross section.

Preferably, the ring body two is obtained by scaling the ring body one.

Preferably, the two ends of the shell are respectively provided with a clamping ring, and the diameter of the hole formed in the clamping ring is larger than that of the corresponding position of the shaft body.

Preferably, the outside of the shaft body is located at both ends of the housing and is provided with a slidable end cover, and the end cover is provided with a corrugated pipe which is tightly pressed on the outside of the housing.

Compared with the prior art, the damping device has the advantages that the adjusting mechanism is arranged between the shell and the shaft body, the adjusting mechanism can slide along the axis direction of the shaft body, the damping units are arranged on two sides of the adjusting mechanism, and the damping device can buffer and damp along the axis direction; according to the invention, the shaft body is arranged in the adjusting mechanism, and can rotate around the axis direction of the shaft body or incline along the adjusting mechanism, so that the shaft body has a steering function, and can incline and generate a buffering effect when being subjected to impact force, and the rigid connection with the shell is avoided; according to the invention, the plurality of shock absorption units which are stacked together are arranged, the inner ring and the outer ring of each shock absorption unit are respectively abutted against the shaft body and the shell, and the shock absorption units are stacked mutually, so that the axial buffer and the transverse buffer can be realized, and the shock absorption effect is better.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Figure 2 is a partial cross-sectional view of a first annular body and a second annular body of the present invention.

FIG. 3 is an enlarged view of the invention at A in FIG. 1.

FIG. 4 is a connection diagram of a shaft body and an inner race according to one embodiment of the present invention.

Fig. 5 is a schematic structural diagram of the adjusting mechanism of the present invention.

In the figure: 1. the device comprises a shell, 2, an adjusting mechanism, 21, an outer ring, 22, a ball body, 23, an inner ring, 24, a through groove, 3, a protrusion, 4, a shaft body, 5, a first ring body, 6 and a second ring body.

Detailed Description

The invention is illustrated by the following specific examples, which are not intended to be limiting.

Examples

In conjunction with fig. 1-5: in this embodiment, a vehicle shock absorber that provides includes casing 1 and axis body 4, the rotatable grafting of axis body 4 is in casing 1, and this device application scene is extensive, and axis body 4 is the supporter that axle casing 1 for supporting the wheel axle that has the function of turning to, and is specific: the shaft body 4 can be a handlebar shaft, a wheel shaft and the like of a vehicle body, the shell 1 is a support body for supporting the handlebar shaft or the wheel shaft, a gap is arranged between the shell 1 and the shaft body 4, the two ends of the shaft body 4 are respectively provided with a space inclined at the gap, rigid connection between the shaft body 4 and the shell 1 can be avoided, the two ends of the shell 1 are respectively provided with a snap ring, the diameter of a hole formed in the snap ring is larger than that of the corresponding position of the shaft body 4, the snap ring is used for fixing a damping unit and can give way for the shaft body 4, the shaft body 4 is provided with an inclined space, the outer part of the shaft body 4 is respectively provided with a slidable end cover at the two ends of the shell 1, the end covers are provided with corrugated pipes, the corrugated pipes are tightly pressed on the outer part of the shell 1, the corrugated pipes are used for sealing, external dust can be prevented from entering the inner part of the shell 1, the end covers are movably connected with the shaft, and can slide on the shaft, the material of end cover can be rubber, and the bellows only has the sealed effect and does not have the supporting role for the hose, clearance department installs can follow the gliding adjustment mechanism 2 of 1 axis direction of casing, 2 inside of adjustment mechanism are equipped with and run through groove 24, and the inner wall that runs through groove 24 is the sphere, the mid-mounting of axis body 4 has annular arch 3, arch 3 sets up in the sphere, and the connection of arch 3 and sphere prevents to be two kinds at least, and one is: the protrusions 3 are only tangent to the through grooves 24 through the annular lines on the outermost sides, and as shown in fig. 4, the contact area between the protrusions 3 and the through grooves 24 is small, and a gap is reserved between the protrusions 3 and the through grooves 24; the other is as follows: the protrusions 3 are in spherical surface connection with the whole surface of the through groove 24, and as shown in fig. 1, the contact area between the protrusions 3 and the through groove 24 is large, no gap is reserved between the protrusions 3 and the through groove 24, and the connection mode is large in contact area, good in supporting effect and not prone to breaking.

The adjusting mechanism 2 comprises an outer ring 21 and an inner ring 23, a cavity is arranged between the outer ring 21 and the inner ring 23, a plurality of balls 22 are arranged in the cavity, the inner ring 23 is rotatably arranged in the outer ring 21 through the balls 22, and the friction force is small, the through groove 24 is arranged on the inner ring 23, the outer ring 21 is contacted with the inner wall of the shell 1, sealing plates are arranged on two sides of the outer ring 21 and are in contact with the inner ring 23, the sealing plates can play a role in sealing and supporting the damping unit, the damping unit is prevented from deforming, the shaft body 4 can incline towards any direction around the adjusting mechanism 2, the shaft body 4 is arranged inside the shell 1 through the support of the adjusting mechanism 2, when the shaft body 4 is inclined after being applied with an acting force in the process that the shaft body 4 moves up and down along with the adjusting mechanism 2, the shaft body can follow the movement of the adjusting mechanism 2 and incline around the center of the sphere of the through groove 24.

The two sides of the adjusting mechanism 2 are respectively overlapped with a plurality of annular damping units, the damping units positioned on one side of the adjusting mechanism 2 form a damping spring, one end of the damping spring is tightly propped against the adjusting mechanism 2, the other end of the damping spring is tightly propped against the end part of the shell 1, the inner ring of the damping unit is tightly propped against the outer wall of the shaft body 4, the outer ring of the damping unit is tightly propped against the inner wall of the shell 1, the damping unit comprises a ring body I5 and a ring body II 6, the ring body I5 and the ring body II 6 are respectively provided with a tip end and two opening ends, the opening directions of the ring body I5 and the ring body II 6 are oppositely arranged, the ring body I5 and the ring body II 6 are not fixed with each other, as shown in a combined figure 2, the damping unit can be firstly divided into two symmetrical parts longitudinally or transversely in the production process, the ring body II 6 is installed between the two parts and then is fixed by welding, or the first ring body 5 and the second ring body 6 are directly cast and produced and integrally formed, the open end of the second ring body 6 is tightly pressed against the inner wall of the first ring body 5 with the opening, under the state of installation and use, mutual acting force is generated between the first ring body 5 and the second ring body 6, the first ring body 5 generates pressing force on the second ring body 6, the second ring body 6 generates supporting force on the first ring body 5, certain supporting force is provided for the shaft body 4 after installation is completed, when the shaft body 4 is subjected to transverse impact force or longitudinal pressure, the first ring body 5 and the second ring body 6 can deform, and a damping effect is achieved, the tips of the first ring body 5 and the second ring body 6 are tightly pressed against the shaft body 4 and the shell 1 respectively, a gap is formed between the open end of the first ring body 5 and the inner wall of the shell 1, the gap is a, the gap a has a yielding effect, and only a single point D or B of the first ring body 5 or the second ring body 6 is in contact with the shaft body 4 and the shell 1, the connection mode is not three-point support, the support effect can be achieved under the initial state between the shaft body 4 and the shell 1, the axial direction of the shaft body 4 can also achieve the shock absorption and buffering effect, the graph formed by the sections of the first ring body 5 and the second ring body 6 is a part of a parabola, a hyperbola or an ellipse, when the connection mode is in a natural state, the connection mode is combined with a graph 3, when the connection mode is in a longitudinal section, the contact points of the first ring body 5 and the second ring body 6 are respectively an A point and a C point, the graph formed by four points of ABCD is in a spindle shape, and the second ring body 6 is a graph obtained by scaling the first ring body 5, and therefore the connection mode is not prone to deformation.

The device is arranged on a vehicle body, when the vehicle body is in a normal running state, the damping units have a longitudinal damping and buffering effect, the adjusting mechanism 2 can slide in the shell 1 along the axis direction of the shell 1 to compress a plurality of damping units to play a role in buffering, the adjusting mechanism 2 is internally provided with an outer ring 21, an inner ring 23 and a ball 22 to realize that the shaft body 4 can rotate in the shell 1 along the circumferential direction, when one end of the shaft body 4 is impacted, the part of the end is the end with the wheels arranged at the bottom, the end of the shaft body 4 which is impacted inclines along the direction of the stress, rotates around the ball center of the through groove 24, and can instantly return to the original position after inclining to play a role in supporting again.

Finally, it should be noted that the above embodiments are only used for illustrating and not limiting the technical solutions of the present invention, and although the present invention is described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the present invention, and all modifications or partial replacements should be covered in the claims of the present invention.

Claims

1. The vehicle shock absorber is characterized by comprising a shell (1) and a shaft body (4), wherein the shaft body (4) is rotatably inserted into the shell (1), a gap is formed between the shell (1) and the shaft body (4), an adjusting mechanism (2) capable of sliding along the axis direction of the shell (1) is installed at the gap, and the shaft body (4) can incline towards any direction around the adjusting mechanism (2);

a plurality of annular damping units are overlapped on two sides of the adjusting mechanism (2), the inner rings of the damping units are abutted against the outer wall of the shaft body (4), and the outer rings of the damping units are abutted against the inner wall of the shell (1);

the damping units on one side of the adjusting mechanism (2) form a damping spring, one end of the damping spring abuts against the adjusting mechanism (2), and the other end of the damping spring abuts against the end of the shell (1).

2. The vehicle shock absorber according to claim 1, characterized in that the adjusting mechanism (2) is internally provided with a through groove (24), the inner wall of the through groove (24) is a spherical surface, the middle part of the shaft body (4) is provided with an annular protrusion (3), the protrusion (3) is arranged in the spherical surface, and the protrusion (3) and the through groove (24) are at least partially tangent.

3. A vehicle shock absorber according to claim 2, wherein the adjusting mechanism (2) comprises an outer ring (21) and an inner ring (23), a cavity is arranged between the outer ring (21) and the inner ring (23), a plurality of balls (22) are arranged in the cavity, the through groove (24) is arranged on the inner ring (23), and the outer ring (21) is in contact with the inner wall of the housing (1).

4. A shock absorber for vehicle according to claim 3, wherein sealing plates are mounted on both sides of the outer ring (21), said sealing plates being in contact with the inner ring (23).

5. The vehicle shock absorber of claim 1, wherein the shock absorption unit comprises a first ring body (5) and a second ring body (6), the first ring body (5) and the second ring body (6) both have a tip end and two opening ends, the opening end of the second ring body (6) abuts against the inner wall of the first ring body (5) provided with the opening, and the tip ends of the first ring body (5) and the second ring body (6) abut against the shaft body (4) and the shell (1) respectively.

6. A vehicle shock absorber according to claim 5, wherein a gap is provided between the open end of the first ring body (5) and the inner wall of the housing (1).

7. The vehicle shock absorber of claim 6, wherein the cross-section of the first ring body (5) and the second ring body (6) forms a part of a parabola, a hyperbola or an ellipse.

8. A vehicle shock absorber according to claim 7, wherein the second ring (6) is scaled to the first ring (5).

9. A shock absorber for vehicle according to claim 1, wherein snap rings are installed at both ends of the housing (1), and the diameter of the hole formed inside the snap ring is larger than the diameter of the corresponding position of the shaft body (4).

10. A vehicle shock absorber according to claim 1, characterized in that the outside of the shaft body (4) is fitted with slidable end caps at both ends of the housing (1), said end caps being provided with bellows which are compressed against the outside of the housing (1).