Three-way shock absorber and method of using the same

Abstract

The present invention discloses a three-way vibration damper and a method for using the same. The three-way vibration damper includes a connecting component, a base, and a damping vibration reduction device. The damping vibration reduction device includes vibration reduction units arranged in three directions perpendicular to each other or at a 90-degree angle. The connecting component includes an assembly panel corresponding to and intersecting the arrangement direction of each vibration reduction unit. The vibration reduction unit includes a damping vibration reduction pad disposed on the assembly panel. The connecting component is separated from the base by the damping vibration reduction pad. The three-way vibration damper of the present invention adopts a structural form in which the vibration reduction units are arranged in three directions in a three-dimensional space. It can simultaneously achieve vibration reduction in three directions by utilizing a rigid connection of a fulcrum located on the connecting component. It has the ability to withstand large overloads, strong impacts, and large angular vibration frequencies.

Description

Technical Field

[0001] The present invention relates to a shock absorber, and in particular to a three-way shock absorber and a use method thereof. Background Art

[0002] Shock absorbers are widely used devices for attenuating vibrations. During operation, they balance and cushion loads, ensuring stable movement of moving parts. Currently, most shock absorbers only dampen loads in a single direction. However, for precision products, shock absorbers must not only dampen vibrations in all three-dimensional directions but also meet stringent environmental requirements. These requirements require not only high overloads and strong impacts, but also a wide temperature range (-20°C to +60°C) and high angular vibration frequencies (80Hz to 120Hz).

[0003] Chinese patent CN107677262A employs a multi-point vibration reduction solution. However, each point reduces vibration in a single direction, failing to decompose vibration in other directions. Under high-level overload conditions, the damper is prone to failure. Furthermore, when installing dampers at multiple points simultaneously, the installation accuracy of the product being dampened is difficult to guarantee. Summary of the Invention

[0004] The object of the present invention is to provide a three-way shock absorber and a method of using the same.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A three-way vibration absorber includes a connecting component, a base, and a damping vibration reduction device. The damping vibration reduction device includes vibration reduction units connected to the connecting component and the base and arranged in three directions perpendicular to each other or at 90-degree angles. The connecting component includes an assembly panel that intersects (for example, perpendicularly) with the arrangement direction of each vibration reduction unit. The vibration reduction unit includes a damping vibration reduction pad arranged on the assembly panel. The connecting component is separated from the base by the damping vibration reduction pad.

[0007] Preferably, the connecting component specifically includes a rib plate composite structure, which includes an upper flat plate, a lower flat plate and two or more upright rib plates arranged between the upper flat plate and the lower flat plate, and the lower flat plate and the upright rib plate opposite to the base are respectively provided with through holes for connecting the damping vibration pad.

[0008] Preferably, the vertical ribs are arranged in a cross shape, wherein two vertical ribs perpendicular to each other are connected to the edges of the upper and lower plates that are bent inward into corresponding shapes (two edges with a 90-degree interval angle), and the through holes are provided on the vertical ribs.

[0009] Preferably, the upper plate is provided with a stud rod, which can be used to achieve a rigid connection with the device to be damped.

[0010] Preferably, the base includes a reference plate and a column arranged on the reference plate, and threaded holes for fixing corresponding vibration damping units are respectively provided on the side surfaces of the column and the reference plate.

[0011] Preferably, the reference plate is further provided with connection holes located on both sides of the connection component for fixing the base.

[0012] Preferably, the vibration reduction unit also includes a limiting washer and a limiting sleeve, and the limiting sleeve is provided with two damping vibration reduction pads respectively connected to the two side surfaces of the assembly panel, and the two damping vibration reduction pads are fixed to the base through the limiting washer and screws passing through the limiting washer and the limiting sleeve.

[0013] Preferably, the ends of the damping and vibration-isolating pads are embedded in the through holes, and a gap is left between the damping and vibration-isolating pads on both sides of the assembly panel.

[0014] The method for using the three-way shock absorber comprises the following steps:

[0015] 1) Fix the base on the mounting surface of the device to be damped;

[0016] 2) Connect and tighten the connecting parts to the device to be damped through the stud rod.

[0017] Preferably, in step 1), bases of a plurality of three-way vibration absorbers are respectively fixed on the mounting surface according to different fulcrum positions of the device to be vibration-damped.

[0018] The beneficial effects of the present invention are embodied in:

[0019] The three-way vibration absorber described in the present invention adopts a structural form in which vibration-damping units are arranged along three directions perpendicular to each other or at 90-degree angles in three-dimensional space. The vibration-damping units connected to the connecting components and the base can simultaneously achieve vibration reduction in three directions at any position on the product installation surface, and have the ability to resist large overloads, strong impacts, and large angular vibration frequencies.

[0020] Furthermore, the three-way shock absorber described in the present invention uses a limiting bushing and a limiting washer to limit the damping vibration damping pad, so that the damping vibration damping pad is in a compressed state under overload conditions, avoiding the stress state of the vibration damping unit being compressed at one end and tensile at the other end under overload conditions.

[0021] Furthermore, the three-way shock absorber of the present invention arranges the same damping vibration pad structure in three directions, which is not only simple in structure and low in cost, but also has the characteristics of equal stiffness in three directions. It can protect against overloads in the six directions of +X, +Y, +Z, -X, -Y, and -Z, and has good vibration reduction performance.

[0022] Furthermore, in the three-way vibration absorber of the present invention, since the damping pads are symmetrically arranged on both sides of the assembly panel, the temperature deformation of the vibration reduction unit can be basically offset, which can meet the use requirements in a wide temperature range.

[0023] Furthermore, in the three-way shock absorber described in the present invention, the gap (spacing distance) between the damping and vibration-damping pads can be designed according to the extreme conditions of vibration and temperature changes to which the two damping and vibration-damping pads are subjected and realized through the assembly of the damping and vibration-damping pads and the through holes, so that the two damping and vibration-damping pads will not interfere with or affect each other under any circumstances, thereby improving the vibration damping and buffering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the overall structure of the three-way shock absorber in the embodiment (front view);

[0025] Figure 2 Schematic diagram of the overall structure of the three-way shock absorber in the embodiment (back view);

[0026] Figure 3 Schematic diagram of the vibration reduction unit structure of the rubber damping vibration reduction device (flat washers and spring washers are not shown);

[0027] Figure 4 This is the assembly diagram of the vibration reduction unit of the rubber damping vibration reduction device;

[0028] Figure 5 is a structural diagram of the connecting components;

[0029] Figure 6 is a structural diagram of the base;

[0030] In the figure: 1-base; 2-rubber damping and vibration reduction pad; 3-connecting part; 4-limiting washer; 5-limiting bushing; 6-flat washer; 7-spring washer; 8-screw; 9-stud rod; 10-upper plate; 11-X-direction mounting hole; 12-X-direction assembly rib plate; 13-X-direction reinforcement rib plate; 14-Z-direction mounting hole; 15-Y-direction reinforcement rib plate; 16-Y-direction mounting hole; 17-Y-direction assembly rib plate; 18-lower plate; 19-X-direction threaded hole; 20-Z-direction threaded hole; 21-Y-direction threaded hole. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0032] (1) Shock absorber structure design

[0033] See also Figure 1 and Figure 2The three-way vibration damper of the present invention is assembled from a base 1, a connecting component 3, and a rubber damping vibration reduction device. The connecting component 3 is placed on the base 1 and has three mutually perpendicular assembly surfaces. These three assembly surfaces of the connecting component 3 are parallel to and correspond to the three mutually perpendicular reference surfaces of the base 1. The rubber damping vibration reduction device includes three vibration reduction units, which connect the three assembly surfaces of the connecting component 3 to the corresponding reference surfaces along two mutually perpendicular directions in a plane and a direction perpendicular to the plane (corresponding to the X, Y, and Z axes, respectively).

[0034] See also Figure 3 and Figure 4 Each vibration damping unit in the rubber damping vibration isolating device includes a screw 8, a flat washer 6, a spring washer 7, a limiting washer 4, a limiting bushing 5, and two rubber damping vibration isolating pads 2. During installation, the two opposing ends of the rubber damping vibration isolating pads 2 and the limiting bushing 5 located within the rubber damping vibration isolating pads 2 are fixed to the corresponding reference surface of the base 1 using the screw 8 and the spring washer 7, flat washer 6, and limiting washer 4 that pass through the screw 8 in sequence (the corresponding end surface of the limiting bushing 5 is between the reference surface and the end surface of the rubber damping vibration isolating pad 2). The two rubber damping vibration isolating pads 2 have bosses on their opposing ends, which engage from both sides into the mounting holes on the assembly surface of the connecting component 3. A certain gap is left between the bosses (the gap is left to prevent the two vibration isolating pads from contacting each other and avoiding mutual interference when squeezed under vibration conditions or when the vibration isolating pads expand or contract due to ambient temperature conditions). The two ends of the rubber damping vibration isolating pads 2 away from the mounting holes are limited by the limiting bushing 5 and limiting washer 4.

[0035] See also Figure 5The connecting component 3 comprises an integrated rib-plate composite structure, comprising two upper and lower plates of similar shape but different sizes (i.e., an upper plate 10 and a lower plate 18, with the upper plate 10 being smaller and the lower plate 18 being larger), and four upright ribs positioned between the two plates. A stud rod 9 is fixed to the top of the upper plate 10. The upper plate 10 and the lower plate 18 are two parallel square plates with corresponding isosceles right-angled triangular notches on one side. The corresponding sides of the upper plate 10 and the lower plate 18 are parallel. The four vertical ribs are evenly distributed along the diagonal of the upper plate 10 at 90 degrees around the circumference and are equidistant from the center line of the stud rod 9, that is, the four vertical ribs form a hollow "cross" shape; two of the vertical ribs are respectively connected to the edges of the upper plate 10 and the lower plate 18 (the hypotenuse of the above-mentioned isosceles right triangle), and are respectively perpendicular to the upper plate 10 and the lower plate 18, thereby forming three mutually perpendicular intersecting planes in space, that is, the two vertical ribs are respectively located in the X-direction and Y-direction planes perpendicular to the plane where the lower plate 18 is located, and are respectively The Y-axis mounting ribs 17 and X-axis mounting ribs 12 (another vertical rib, namely the Y-axis reinforcing rib 15, and another vertical rib, namely the X-axis reinforcing rib 13, located in the same plane as the X-axis mounting rib 12) serve as the vibration damping units. Each of these Y-axis mounting ribs 17, X-axis mounting ribs 12, and lower plate 18 has a through hole that serves as a mounting hole for locating the corresponding vibration damping unit (referred to as the Y-axis mounting hole 16, the X-axis mounting hole 11, and the Z-axis mounting hole 14, respectively). The center of gravity of the entire connecting component 3 is located at the center of the stud rod 9, thereby aligning the fulcrum of the product to be damped with the center of gravity of the vibration damper, maximizing the vibration damping effect.

[0036] See also Figure 6The base 1 includes a semicircular flat plate, with a threaded hole on each of the left and right sides (along the straight edge of the semicircular flat plate), so that the semicircular flat plate can be fixed to the product installation surface by bolts. There is a raised cylinder near the center of the semicircular flat plate (for example, a position close to the center of the circle on the line connecting the center of the circle and the midpoint of the arc of the semicircular flat plate), and a raised cylindrical cutting body at the midpoint of the arc of the semicircular flat plate. The cylindrical cutting body has three side surfaces, two of which intersect perpendicularly with each other. These two side surfaces respectively intersect perpendicularly with the upper surface of the semicircular flat plate where the raised cylinder is located, forming three reference surfaces for assembling the connecting component 3; the other side surface of the cylindrical cutting body is a part of the cylindrical side surface, and the lower end of the side surface overlaps with a small section in the middle of the arc edge of the semicircular flat plate. A threaded hole is respectively provided on the side surface of the cylindrical cutting body and the upper end surface of the raised cylinder, which serve as the reference surface. The two vibration-damping units of the rubber damping vibration-damping device are respectively connected to the threaded holes on the upper side of the base 1 (the X-direction threaded holes 19 and the Y-direction threaded holes 21 that pass through the side of the cylindrical cutting body) by means of screws 8 that can pass through the connecting component 3 and are arranged along the X and Y directions on the mounting holes (X-direction mounting holes 11 and Y-direction mounting holes 16) on the corresponding vertical ribs. The third vibration-damping unit is connected to the threaded hole on the lower side of the base 1 (the Z-direction threaded hole 20 on the raised cylinder) by means of screws 8 that can pass through the connecting component 3 and are arranged along the Z direction on the mounting holes (Z-direction mounting holes 14) on the lower flat plate 18.

[0037] The above-mentioned three-way shock absorber generally uses four shock absorbers of the same model and specifications, and is placed under the four fulcrums of the product (similar to the four legs of a table) so that they can be used in combination. Three three-way shock absorbers can also be used in combination, or a single or two three-way shock absorbers can be used in combination.

[0038] The method for using the three-way shock absorber comprises the following steps:

[0039] 1) Assemble a three-way shock absorber so that the three vibration reduction units of the rubber damping vibration reduction device are located in the X, Y, and Z directions;

[0040] 2) Fix the base 1 of the assembled three-way shock absorber to the product installation surface with bolts and install it firmly, ensuring that the product installation surface and the shock absorber base 1 are connected as a whole through threaded connection to achieve a rigid connection (the installation surface here is the workbench reference of the product, for example, it can be the ground, etc.). The entire shock absorber is located between the workbench reference and the product to be damped, playing a supporting and vibration-damping role.

[0041] 3) The stud rod 9 on the connecting component 3 is screwed and fastened to the product to ensure that the stud rod 9 and the product to be damped are connected as a whole through the screw thread to achieve a rigid connection.

[0042] After the three-way vibration damper is installed, only the stud rod 9 contacts the product to be damped, while the base 1 (the lower surface of the semicircular flat plate) contacts the workbench reference. The rest of the damper is free from contact with the product. The product to be damped and the three-way vibration damper's connecting component 3 are rigidly connected to form a single rigid body. The base 1 at the bottom of the three-way vibration damper and the workbench reference are also rigidly connected to form a single rigid body. A rubber damping pad 2 (plastic body) is connected between these two rigid bodies, providing a cushioning and vibration reduction effect.

[0043] 4) Repeat steps 1) to 3) to install the remaining three-way shock absorbers.

[0044] (2) Dimensional design of three-way shock absorber

[0045] Because three-way vibration dampers can be used in a wide variety of product types, they should be designed based on the specific product structure and vibration reduction effect. The specifications and dimensions of the three-way vibration damper's connection, base, and rubber damping device should meet the relevant mechanical strength requirements. The stud rod 9 is connected to the product to be damped, and its specific shape and dimensions are designed based on the installation method and dimensions of the product to be damped.

[0046] (3) Advantages of three-way shock absorber

[0047] The above three-way shock absorber is significantly different from existing shock absorbers in terms of structure and vibration reduction method, and has the following advantages:

[0048] 1. The three-way shock absorber achieves the purpose of joint vibration reduction in the X, Y, and Z directions. The three-way shock absorber adopts a three-way equal stiffness vibration reduction unit design, has good vibration reduction performance, provides a good mechanical environment for instruments and electronic components, and can ensure the working accuracy and reliability of the system.

[0049] 2. In the vibration reduction unit of the three-way shock absorber, limit bushings and limit washers are used at both ends of the rubber damping vibration reduction pad to limit the position, so that the rubber damping vibration reduction pad remains in a compressed state under overload conditions, avoiding the vibration reduction unit being under compression at one end and tension at the other end under overload conditions in the absence of a limit device. This can improve the shock absorber's ability to resist large overloads and achieve better vibration reduction effects. It can also improve the working conditions of the shock absorber and extend its service life.

[0050] 3. The three-way shock absorber can simultaneously achieve vibration reduction in the X, Y, and Z directions. Moreover, the shock absorber has equal stiffness in three directions and can protect against overloads in the six directions of +X, +Y, +Z, -X, -Y, and -Z. It has good vibration reduction performance and can improve the product's ability to resist large overloads, strong impacts, and large-angular vibration frequencies.

[0051] 4. In the vibration reduction unit of the three-way vibration absorber, since the rubber damping pads are arranged completely symmetrically, their temperature deformation can be basically offset, which can meet the use requirements of a wide temperature range and improve the product's adaptability in the full temperature range.

[0052] 5. The three-way shock absorber adopts common vibration-damping materials such as rubber damping pads. The six damping pads in three directions are exactly the same, with simple structure and low cost.

[0053] 6. The three-way shock absorber provides the function of simultaneous vibration reduction in multiple directions at a single point. Since each fulcrum can provide three-directional vibration reduction, it not only ensures the installation accuracy of the product, but also solves the problem of easy failure of the shock absorber under large-scale overload conditions.

[0054] 7. The three-way shock absorber can be used in combination to provide multi-point vibration reduction in plane and space, meeting the vibration reduction needs of expensive precision instruments and ensuring the normal use of the instruments under harsh working conditions such as large overload and wide temperature range.

Claims

1. A three-way shock absorber, characterized in that: The three-way vibration damper comprises a connecting component (3), a base (1), and a damping vibration reduction device, wherein the damping vibration reduction device comprises vibration reduction units connected to the connecting component (3) and the base (1) and arranged in three mutually perpendicular directions, the connecting component (3) comprises an assembly panel corresponding to and intersecting with the arrangement direction of each vibration reduction unit, the vibration reduction unit comprises a damping vibration reduction pad arranged on the assembly panel, and the connecting component (3) is separated from the base (1) by the damping vibration reduction pad; The vibration reduction unit further comprises a limiting washer (4) and a limiting bushing (5), wherein the limiting bushing (5) is provided with two damping vibration reduction pads respectively connected to the two side surfaces of the assembly panel, and the two damping vibration reduction pads are fixed to the base (1) via the limiting washer (4) and screws (8) penetrating the assembly panel, the limiting washer (4) and the limiting bushing (5); The connecting component (3) specifically comprises a rib plate composite structure, the rib plate composite structure comprising an upper plate (10), a lower plate (18), and two or more vertical rib plates arranged between the upper plate (10) and the lower plate (18), and through holes for connecting to the damping pad are respectively provided on the lower plate (18) and the vertical rib plates opposite to the base (1); A stud rod (9) is provided on the upper plate (10), and the center of gravity of the connecting component (3) is located at the center of the stud rod (9), so that the fulcrum of the vibration reduction device and the center of gravity of the three-way vibration reduction device are on the same axis.

2. A three-way vibration absorber according to claim 1, characterized in that: The vertical ribs are arranged in a cross shape, wherein two vertical ribs perpendicular to each other are connected to the inwardly bent right-angled edges of the upper flat plate (10) and the lower flat plate (18), and the through holes are provided on the vertical ribs.

3. The three-way vibration absorber according to claim 1, characterized in that: The base (1) comprises a reference plate and a column arranged on the reference plate, and threaded holes for fixing corresponding vibration reduction units are respectively provided on the side surfaces of the column and the reference plate.

4. The three-way vibration absorber according to claim 3, characterized in that: The reference plate is also provided with a connection hole for fixing the base (1).

5. The three-way vibration absorber according to claim 1, characterized in that: The ends of the damping and vibration-reducing pads are embedded in the through holes on the assembly panel, and a gap is left between the damping and vibration-reducing pads on both sides of the assembly panel.

6. A method for using the three-way shock absorber according to claim 1, characterized in that: The following steps are involved: 1) Fix the base (1) on the mounting surface of the device to be damped; 2) Connect and tighten the connecting component (3) to the vibration reduction device through the stud rod (9).

7. The method of use according to claim 6, characterized in that: In the step 1), the bases (1) of the plurality of three-way vibration dampers are respectively fixed on the mounting surface according to the different fulcrum positions of the device to be vibration-damped.

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