A low stiffness overload protected shock absorber

Abstract

The utility model provides a kind of low stiffness overload protection type shock absorber, it has better vibration isolation rate, and can avoid cutting rubber, can effectively limit protection system component;Including split first shock absorbing component, second shock absorbing component, coaxial connection between first shock absorbing component, second shock absorbing component is I-shaped structure, first shock absorbing component includes the first sleeve tube, first shock absorbing piece, support piece sequentially arranged from inside to outside, second shock absorbing component includes the second sleeve tube, second shock absorbing piece, the material quality of first shock absorbing piece, second shock absorbing piece is vulcanized rubber, first sleeve tube, first shock absorbing piece, support piece vulcanization connection is integrated structure, second sleeve tube, second shock absorbing piece vulcanization connection is integrated structure, the assembling corner of second shock absorbing piece is equipped with annular avoidance slot, the end angle of second shock absorbing piece away from second sleeve tube is all provided with sharp corner part, and the height difference H1 is all had between the top end of sharp corner part and second shock absorbing piece horizontal end surface.

Description

Technical Field

[0001] This utility model relates to the field of vibration reduction and protection technology for engineering machinery, specifically a low-stiffness overload protection vibration damper. Background Technology

[0002] If the power system of an engineering vehicle uses a rigid connection, the vibration generated by the engine or motor will be directly transmitted to the chassis. The chassis vibration will then be transmitted to the cab and other equipment, resulting in reduced comfort and equipment damage. At the same time, the rigid connection may loosen due to vibration, causing the power system to detach from the chassis and causing an accident. Therefore, it is necessary to install a corresponding vibration damping system. However, the existing vibration damping system has poor rubber deformation capacity and high rigidity, which cannot completely achieve vibration isolation in all six degrees of freedom. This means that vibration in some directions will still be amplified and transmitted to the chassis, causing the aforementioned consequences due to resonance. In addition, when the rubber pads of the vibration damping system are assembled and connected to the chassis, sharp corners or turns on the chassis may cause the rubber pads to be cut. In the event of rubber failure, it will not be able to provide effective limiting protection, which can easily lead to damage to system components. Utility Model Content

[0003] To address the aforementioned issues, this invention provides a low-stiffness overload protection vibration damper, which has a good vibration isolation rate and can avoid cutting the rubber, effectively limiting and protecting system components.

[0004] This utility model adopts the following technical solution: a low-stiffness overload protection vibration damper, including a split first vibration damping component and a second vibration damping component. The first vibration damping component and the second vibration damping component are coaxially connected in an I-shaped structure. The first vibration damping component includes a first sleeve, a first vibration damping element, and a support element arranged sequentially from the inside to the outside. The second vibration damping component includes a second sleeve and a second vibration damping element arranged from the inside to the outside. The first vibration damping element and the second vibration damping element are both made of vulcanized rubber. The first sleeve, the first vibration damping element, and the support element are vulcanized and connected as a whole structure. The second sleeve and the second vibration damping element are vulcanized and connected as a whole structure. An annular clearance groove is provided at the assembly corner of the second vibration damping element. The end corners of the second vibration damping element away from the second sleeve are all provided with sharp corners. There is a height difference H1 between the tip of the sharp corner and the horizontal end face of the second vibration damping element.

[0005] Furthermore, the clearance groove is inclined toward the direction of the second sleeve, and the inclination angle is 30°~80°;

[0006] Furthermore, the top surface of the first damping member located between the first sleeve and the support member is provided with a first groove, a second groove, and a third groove distributed in a stepped manner from top to bottom, and the bottom surface of the first damping member located between the first sleeve and the support member is provided with a fourth groove.

[0007] Furthermore, the depths of the first, second, and third trenches increase sequentially, the width of the second trench is greater than the widths of the first and third trenches, and the depth of the fourth trench is greater than the depth of the third trench.

[0008] Furthermore, there is a height difference H2 between the bottom end of the first sleeve and the bottom end face of the first vibration damper;

[0009] Furthermore, the support component is a sheet metal part, and both the first sleeve and the second sleeve are made of steel; the first vibration damping component and the second vibration damping component are coaxially and detachably connected by bolts.

[0010] The beneficial effects of this utility model are that by setting up a split first damping component and a second damping component, it can achieve low stiffness and large deformation capacity in all directions, thereby isolating vibration in all directions and obtaining a high vibration isolation rate. At the same time, the set clearance groove can prevent the frame mounting part from cutting the rubber, and the sharp corner set at the end of the second damping component can provide a larger compression space after the damper is installed under pressure, thereby having a better vibration isolation rate. In addition, it can effectively limit and protect the system components, and has good application value. Attached Figure Description

[0011] Figure 1 This is a structural diagram of the present invention before assembly;

[0012] Figure 2 This is a sectional view of the present invention before assembly;

[0013] Figure 3 This is a schematic diagram of the assembled structure of this utility model;

[0014] Figure 4 This is a cross-sectional view of the assembled version of this utility model. Detailed Implementation

[0015] like Figures 1-4As shown, this utility model discloses a low-stiffness overload protection vibration damper, comprising a split first vibration damping component 1 and a second vibration damping component 2. The first vibration damping component 1 and the second vibration damping component 2 are coaxially connected in an I-shape. The first vibration damping component 1 includes a first sleeve 3, a first vibration damping element 4, and a support element 5 arranged sequentially from the inside out. After the support element 5 is formed into a rubber-coated part, it has the functions of shock absorption, failure retention, and overload protection. The second vibration damping component 2 includes a second sleeve 6 and a second vibration damping element 7 arranged sequentially from the inside out. All components 7 are made of vulcanized rubber. The first sleeve 3, the first damper 4, and the support 5 are vulcanized and connected as a single structure. The second sleeve 6 and the second damper 7 are vulcanized and connected as a single structure. The assembly corner of the second damper 7 is provided with an annular clearance groove 8, which can avoid the sharp corner of the frame mounting plate 9 from cutting the rubber. The end corners of the second damper 7 away from the second sleeve 6 are provided with sharp corners 10. There is a height difference H1 between the tip of the sharp corner 10 and the horizontal end face of the second damper 7, which allows the second damper 7 to have a larger compression space after installation and pressure.

[0016] The clearance groove 8 is inclined towards the second sleeve 6 at an angle of 60°.

[0017] The top surface of the first damping member 4 located between the first sleeve 3 and the support member 5 is provided with a first groove 11, a second groove 12, and a third groove 13 distributed in a stepped manner from top to bottom. The bottom surface of the first damping member 4 located between the first sleeve 3 and the support member 5 is provided with a fourth groove 14. The groove depths of the first groove 11, the second groove 12, and the third groove 13 increase sequentially. The groove width of the second groove 12 is greater than the groove widths of the first groove 11 and the third groove 13. The groove depth of the fourth groove 14 is greater than the groove depth of the third groove 13.

[0018] There is a height difference H2 between the bottom end of the first sleeve 3 and the bottom end face of the first damping element 4.

[0019] Support component 5 is a sheet metal part, and the first sleeve 3 and the second sleeve 6 are both made of steel; the first vibration damping component 1 and the second vibration damping component 2 are coaxially and detachably connected by bolts 15.

[0020] This utility model is explained in terms of its principle after assembly with engineering machinery (such as engines or motors):

[0021] The first vibration damping component 1 and the second vibration damping component 2 are installed with the engine or motor bracket 16 using bolts 15, washers 17, washers 18, and nuts 19. After installation, the first vibration damping component 1 and the second vibration damping component 2, which are set up vertically, can achieve low stiffness and large deformation capacity in all directions, thereby isolating vibrations in all directions and achieving a high vibration isolation rate. Furthermore, the design of the clearance groove 8, the first groove 11, the second groove 12, the third groove 13, and the fourth groove 14 provides space for rubber deformation, which can reduce the stiffness of the vibration damper and achieve a higher vibration isolation rate. In the event of rubber failure, the internal metal support 5 can hold the supporting equipment, i.e., overload limit protection.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A low-stiffness overload protection vibration damper, characterized in that: The device includes a split first vibration damping component and a second vibration damping component, which are coaxially connected in an I-shape. The first vibration damping component includes a first sleeve, a first damping element, and a support element arranged sequentially from the inside to the outside. The second vibration damping component includes a second sleeve and a second damping element arranged from the inside to the outside. Both the first and second damping elements are made of vulcanized rubber. The first sleeve, the first damping element, and the support element are vulcanized and connected as a single structure. The second sleeve and the second damping element are vulcanized and connected as a single structure. The assembly corner of the second damping element is provided with an annular clearance groove. The end corners of the second damping element away from the second sleeve are all provided with sharp corners. The top tip of each sharp corner has a height difference H1 with the horizontal end face of the second damping element.

2. The low-stiffness overload protection vibration damper according to claim 1, characterized in that: The clearance groove is inclined toward the direction of the second sleeve, and the inclination angle is 30°~80°.

3. The low-stiffness overload protection vibration damper according to claim 1, characterized in that: The top surface of the first damping member located between the first sleeve and the support member is provided with a first groove, a second groove, and a third groove distributed in a stepped manner from top to bottom, and the bottom surface of the first damping member located between the first sleeve and the support member is provided with a fourth groove.

4. A low-stiffness overload protection vibration damper according to claim 3, characterized in that: The depths of the first, second, and third grooves increase sequentially, the width of the second groove is greater than the widths of the first and third grooves, and the depth of the fourth groove is greater than the depth of the third groove.

5. A low-stiffness overload protection vibration damper according to claim 1, characterized in that: There is a height difference H2 between the bottom end of the first sleeve and the bottom end face of the first vibration damper.

6. A low-stiffness overload protection vibration damper according to claim 1, characterized in that: The support component is a sheet metal part, and both the first sleeve and the second sleeve are made of steel; the first vibration damping component and the second vibration damping component are coaxially and detachably connected by bolts.

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