CN212055666U - A three-way shock absorber - Google Patents

Abstract

The utility model discloses a three-dimensional shock absorber, three-dimensional shock absorber include adapting unit, base and damping vibration damper, damping vibration damper includes the damping unit of arranging along the direction of three mutually perpendicular or one-tenth 90 degrees angles, and adapting unit includes the assembly panel that corresponds crossing with the direction of arranging of every damping unit, and the damping unit fills up including setting up the damping vibration damping on the assembly panel, and adapting unit passes through the damping vibration damping and fills up and separate with the base. Three-dimensional shock absorber adopts the structural style who arranges the damping unit along three direction in the cubical space, can utilize the fulcrum rigid connection that is located on adapting unit to realize the damping of three direction simultaneously, has anti big overload, strong impact, big angle vibration frequency's ability.

Description

A three-way shock absorber

technical field

The utility model relates to a shock absorber, in particular to a three-way shock absorber.

Background technique

Shock absorbers are devices that attenuate vibration and are widely used. The shock absorber plays the role of balancing and buffering the load force during the working process, so that the moving parts can be stabilized. At present, most of the shock absorbers realize the vibration reduction of the load force in a certain direction, but for some precision products, the shock absorber is not only required to be able to reduce the vibration of the product in all directions in the three-dimensional space, but also to adapt to the environment of the product. The performance puts forward more stringent requirements, that is, the product must not only adapt to conditions such as large overload and strong impact, but also meet the requirements of wide temperature (-20℃～+60℃) and high angular vibration frequency (80Hz～120Hz).

Chinese patent CN107677262A adopts the solution of simultaneous vibration reduction at multiple points in space, but each point is unidirectional for vibration reduction, which cannot decompose vibrations in other directions. In addition, when the shock absorber is installed at multiple points in space at the same time, it is difficult to guarantee the installation accuracy of the product to be damped.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a three-way shock absorber.

In order to achieve the above object, the utility model adopts the following technical solutions:

A three-way shock absorber, the three-way shock absorber includes a connecting part, a base and a damping and vibration-absorbing device, the damping and vibration-absorbing device comprises three mutually perpendicular or 90-degree angles connected to the connecting part and the base, respectively. The vibration-damping units are arranged in the direction of the vibration-damping unit, the connecting member includes an assembly panel corresponding to intersecting (for example, vertical) with the arrangement direction of each vibration-damping unit, the vibration-damping unit includes a damping and vibration-damping pad disposed on the assembly panel, and the connecting member passes through the damping The vibration damping pad is separated from the base.

Preferably, the connecting member specifically includes a rib-plate composite structure, and the rib-plate composite structure includes an upper flat plate, a lower flat plate, and two or more upright rib plates disposed between the upper flat plate and the lower flat plate. The upright rib plates are respectively provided with through holes for connecting the damping and vibration damping pads.

Preferably, the upright rib plates are arranged in a cross shape, wherein two mutually perpendicular upright rib plates and the inwardly bent edges of the upper flat plate and the lower flat plate are correspondingly shaped edges (two edges with an interval angle of 90 degrees) connected, the through holes are arranged on the upright rib plate.

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

Preferably, the base includes a reference flat plate and a column body disposed on the reference flat plate, and threaded holes for fixing the corresponding vibration damping units are respectively provided on the side surface of the column body and the reference flat plate.

Preferably, the reference plate is further provided with connecting holes on both sides of the connecting member for fixing the base.

Preferably, the vibration damping unit further includes a limit washer and a limit bush, the limit bush is provided with two damping and vibration damping pads respectively connected to both sides of the assembly panel, and the two damping and vibration damping pads pass through the limit The washer and the screw penetrating the limit washer and the limit bush are fixed on the base.

Preferably, the ends of the damping and vibration-damping pads are embedded in the above-mentioned through holes, and there is a space between the damping and vibration-damping pads on both sides of the assembly panel.

The use method of the above three-way shock absorber includes the following steps:

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

2) Connect the connecting part to the device to be damped through the stud rod and fasten it.

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

The beneficial effects of the present utility model are embodied in:

The three-way shock absorber of the utility model adopts the structural form of arranging the shock absorbing units along three mutually perpendicular or 90-degree directions in the three-dimensional space, and the shock absorbing units connected with the connecting parts and the base can be used to realize the product at the same time. Vibration reduction in three directions at any position on the installation surface, with the ability to resist large overload, strong impact, and large angular vibration frequency.

Further, the three-way shock absorber of the present utility model uses a limit bushing and a limit washer to limit the damping and shock-absorbing pads, so that the damping and shock-absorbing pads are in a compressed state under overload conditions, avoiding vibration reduction. The stress state of the unit in which one end is in compression and the other end is in tension under overload conditions.

Further, the three-way shock absorber of the present invention is arranged with the same damping and shock-absorbing 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, and can be used for +X, +Y , +Z, -X, -Y, -Z overload protection in six directions, with good vibration damping performance.

Further, in the three-way shock absorber of the present invention, since the damping and shock-absorbing pads are symmetrically arranged on both sides of the assembly panel, the temperature deformation of the shock-absorbing unit can be basically offset, which can meet the use requirements of a wide temperature range.

Further, in the three-way shock absorber of the present invention, the gap (spacing distance) between the damping and shock-absorbing pads can be designed according to the limit conditions of the vibration and temperature changes received by the two damping and shock-absorbing pads, and can be reduced by damping. The assembly of the vibration pad and the through hole is realized, so that the two damping and vibration damping pads will not form interference and mutual influence under various circumstances, thereby improving the vibration damping and buffering effect.

Description of drawings

1 is a schematic diagram (front view) of the overall structure of a three-way shock absorber in an embodiment;

2 is a schematic diagram of the overall structure of the three-way shock absorber in the embodiment (rear view);

Figure 3 is a schematic diagram of the structure of the vibration damping unit of the rubber damping vibration damping device (flat pads and spring pads are not shown);

Fig. 4 is the assembly relation diagram of the vibration damping unit of the rubber damping vibration damping device;

Fig. 5 is the structural representation of the connection part;

Fig. 6 is the structural representation of the base;

In the figure: 1-base; 2-rubber damping damping pad; 3-connecting part; 4-limit washer; 5-limit bushing; 6-flat washer; 7-spring washer; 8-screw; 9-screw Column; 10-upper plate; 11-X-direction mounting hole; 12-X-direction assembly rib plate; 13-X-direction stiffening rib plate; 14-Z-direction mounting hole; 15-Y-direction stiffening 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 ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings and embodiments.

(1) Structural design of shock absorber

Referring to FIG. 1 and FIG. 2 , the three-way shock absorber of the present invention is assembled from a base 1 , a connecting part 3 and a rubber damping and shock absorbing device. The connecting member 3 is placed on the base 1, the connecting member 3 has three mutually perpendicular mounting surfaces, and the three mounting surfaces of the connecting member 3 are correspondingly parallel to the three mutually perpendicular reference surfaces of the base 1; the rubber The damping and vibration-damping device includes three vibration-damping units, and the three vibration-damping units respectively connect the three parts of the connecting part 3 along two directions perpendicular to each other in the plane and one direction perpendicular to the plane (corresponding to the X, Y and Z axes respectively). Each assembly surface is connected to the corresponding reference surface.

Referring to FIG. 3 and FIG. 4 , each vibration damping unit in the rubber damping and vibration damping device includes a screw 8, a flat washer 6, a spring washer 7, a limit washer 4, a limit bush 5, and two rubber Damping pads 2. During installation, use the screw 8 and the spring washer 7, the flat washer 6 and the limit washer 4 that pass through the screw 8 in turn to connect the rubber damping damping pads 2 with opposite ends and the limit located inside the rubber damping damping pad 2. The bushing 5 is fixed on the corresponding reference surface of the base 1 (the corresponding end surface of the limiting bushing 5 is between the reference surface and the end surface of the rubber damping vibration damping pad 2), and the opposite ends of the two rubber damping vibration damping pads 2 have convex The bosses are inserted into the mounting holes on the assembly surface of the connecting part 3 from both sides, and there is a certain gap between the bosses (the gap is reserved for the purpose of being squeezed under vibration conditions, or the ambient temperature conditions cause the When the vibration pads are thermally expanded and contracted, the two vibration damping pads do not contact each other to avoid mutual interference), and the two ends of the two rubber damping vibration damping pads 2 away from the installation holes are carried out by the limit bushing 5 and the limit washer 4. limit.

Referring to FIG. 5 , the connecting member 3 includes an integrated rib-plate composite structure, and the rib-plate composite structure includes two upper and lower plates with similar shapes and different sizes (ie, the upper plate 10, the lower plate 18, the upper plate 10 is small, The lower plate 18 is large), and four upright rib plates are located between the two plates, and a stud rod 9 is fixed on the top of the upper plate 10 . The upper plate 10 and the lower plate 18 are two square plates parallel to each other and one side edge has a corresponding isosceles right triangle notch. The corresponding sides of the upper plate 10 and the lower plate 18 are parallel. The four upright rib plates are evenly distributed at 90 degrees along the diagonal of the upper plate 10, and the distance from the center line of the stud rod 9 is equal, that is, the four upright rib plates form a hollow "cross" shape; two of them are upright The ribs are connected with the edges of the upper flat plate 10 and the lower flat plate 18 (the hypotenuse of the above-mentioned isosceles right triangle) respectively, and are respectively perpendicular to the upper flat plate 10 and the lower flat plate 18, thereby forming three planes intersecting perpendicularly to each other in space, That is, the two upright rib plates are respectively located in the X-direction and Y-direction planes that are perpendicular to the plane where the lower plate 18 is located, and serve as the Y-direction assembly rib 17 and the X-direction assembly rib 12 (and the X-direction) of the vibration damping unit respectively. The other upright rib plate 12 is located in the same plane, that is, the Y-direction reinforcing rib plate 15, and the other upright rib plate that is located in the same plane as the Y-direction assembly rib plate 17, that is, the X-direction reinforcing rib plate 13). The Y-direction assembly rib 17 , the X-direction assembly rib 12 and the lower plate 18 are respectively provided with a through hole, which is used as a mounting hole for locating the assembly position of the corresponding vibration damping unit (respectively referred to as the Y-direction mounting hole 16 , the X-direction mounting hole 16 , the X-direction mounting hole Mounting hole 11 and Z-direction mounting hole 14). The center of gravity of the entire connecting component 3 is located at the center of the stud rod 9, so that the fulcrum of the product to be damped and the center of gravity of the shock absorber are on the same axis, thereby maximizing the damping effect.

Referring to FIG. 6, the base 1 includes a semicircular flat plate. The left and right sides of the semicircular flat plate (along the straight edge of the semicircular flat plate) are each provided with a threaded hole, and the semicircular flat plate can be bolted to the product installation surface. There is a convex cylinder near the center of the semicircular plate (for example, the line connecting the center and the midpoint of the arc of the semicircular plate), and there is a convex cylindrical cutting body at the midpoint of the arc of the semicircular plate , the cylindrical cutting body has three sides, two of which intersect perpendicularly with each other, and these two sides intersect perpendicularly with the upper surface of the semicircular flat plate where the raised cylinder is located, forming three connecting parts 3 for assembling The reference plane; the other side of the cylindrical cutting body is a part of the side of the cylinder, and the lower end of the side overlaps with a small section in the middle of the arc edge of the semicircular plate. A threaded hole is respectively opened on the side surface of the cylindrical cutting body as the reference plane and the upper end surface of the convex cylinder. The two damping units of the rubber damping and damping device respectively utilize the mounting holes (X-direction mounting holes 11, Y-direction mounting holes 16) that can pass through the connecting member 3 and are arranged on the corresponding upright rib plates along the X and Y directions. The screw 8 is connected to the threaded hole on the upper side of the base 1 (the X-directional threaded hole 19 and the Y-directional threaded hole 21 penetrating the side surface of the cylindrical cutting body), and the third vibration damping unit is arranged in the Z direction through the connecting member 3. The screws 8 of the mounting holes (Z-direction mounting holes 14 ) on the lower plate 18 are connected with the screw holes (Z-direction screw holes 20 on the raised cylinder) on the lower side of the base 1 .

The above three-way shock absorbers generally use four shock absorbers of the same model and specifications, and are placed under the four fulcrums of the product (similar to the four legs of a table) for combined use. Three three-way shock absorbers can also be used. It can be used in combination, and can also be used in combination with a single or two three-way shock absorbers.

The use method of the above three-way shock absorber includes the following steps:

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

2) Fix the base 1 of the assembled three-way shock absorber on the installation surface of the product with bolts, and install it firmly to ensure that the installation surface of the product and the base 1 of the shock absorber are connected as a whole through the screw 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.), and the entire shock absorber is located between the workbench reference and the product to be damped, and plays the role of support and vibration reduction.

3) Screw the stud rod 9 on the connecting part 3 to the product to ensure that the stud rod 9 and the product to be damped are connected as a whole by screwing, so as to realize a rigid connection.

After the three-way shock absorber is installed, only the stud rod 9 in the shock absorber is in contact with the product to be damped, the base 1 (the lower surface of the semicircular plate) is in contact with the workbench reference, and the rest are not in contact with the product. The product to be damped and the connecting part 3 of the three-way shock absorber are fixedly connected to form a rigid body, the base 1 of the lower part of the three-way shock absorber and the workbench reference are fixed to form a rigid body, and rubber is connected between the two rigid bodies. The damping damping pad 2 (plastic body) has the function of buffering and damping.

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

(2) Dimensional design of three-way shock absorber

Since the three-way shock absorber can be applied to many types of product devices, the specific shock absorber should be designed according to the specific product device structure and vibration reduction effect, so that the connecting part, base and rubber damping of the three-way shock absorber can reduce vibration The specific parts specifications and dimensions of the device meet the relevant mechanical strength requirements. The stud rod 9 is connected to the product to be damped, and its specific shape and size are designed according to the installation method and size of the product to be damped.

(3) Advantages of three-way shock absorbers

The above-mentioned three-way shock absorber is obviously different from the existing shock absorber in terms of structural form and vibration reduction method, and has the following advantages:

1. The three-way shock absorber realizes the purpose of joint vibration reduction in the three directions of X, Y, and Z. The three-way shock absorber adopts the design of the three-way equal-stiffness vibration damping unit, which has good vibration damping performance and is suitable for instrumentation and electronic equipment. Component products provide good mechanical environmental conditions, which can ensure the working accuracy and reliability of the system.

2. In the vibration damping unit of the three-way shock absorber, the rubber damping damping pads are limited by limit bushings and limit washers at both ends, so that the rubber damping damping pads are kept under pressure under overload conditions, avoiding the need for In the case of infinite device, one end of the damping unit is compressed and one end is under tension and stress under overload conditions, so that the shock absorber's anti-large overload capability can be improved, and a better vibration reduction effect can be achieved; in addition, the shock absorber can also be improved. working conditions and prolong the service life of the shock absorber.

3. The three-way shock absorber can achieve vibration reduction in three directions of X, Y, and Z at the same time, and the shock absorber has three directions of equal stiffness, which can be used for +X, +Y, +Z, -X, -Y, -Z The overload protection in six directions has good vibration damping performance, which can improve the product's ability to resist large overload, strong impact and large angular vibration frequency.

4. In the vibration reduction unit of the three-way vibration damper, due to the completely symmetrical arrangement of the rubber damping vibration damping pads, the temperature deformation can be basically offset, which can meet the use requirements of a wide temperature range and improve the adaptability of the product in the full temperature range.

5. The three-way shock absorber uses common vibration-absorbing materials such as rubber damping shock-absorbing pads, and a total of six damping pads in three directions are exactly the same, with simple structure and low cost.

6. The three-way shock absorber provides single-point and multi-directional vibration reduction at the same time. 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 large-scale overload conditions. The problem that the shock absorber is easy to fail.

7. The three-way shock absorber can be used in multiple combinations to provide multi-point vibration reduction in plane and space, which can meet the vibration reduction needs of expensive precision instruments, and can also be used in harsh working conditions such as large overload and wide temperature range. The normal use of the instrument can be guaranteed.

Claims (8)

1. A three-way shock absorber, characterized by: the three-way shock absorber comprises a connecting part (3), a base (1) and a damping shock absorption device, wherein the damping shock absorption device comprises shock absorption units which are connected with the connecting part (3) and the base (1) and are arranged along the directions of three mutually perpendicular angles or 90-degree angles respectively, the connecting part (3) comprises an assembly panel which corresponds to the arrangement direction of each shock absorption unit, each shock absorption unit comprises a damping shock absorption pad arranged on the assembly panel, and the connecting part (3) is separated from the base (1) through the damping shock absorption pads.

2. A three-way shock absorber according to claim 1, wherein: the connecting part (3) specifically comprises a rib plate composite structure, the rib plate composite structure comprises an upper flat plate (10), a lower flat plate (18) and more than two vertical rib plates arranged between the upper flat plate (10) and the lower flat plate (18), and through holes used for connecting damping vibration attenuation pads are respectively arranged on the lower flat plate (18) and the vertical rib plates opposite to the base (1).

3. A three-way shock absorber according to claim 2, wherein: the vertical rib plates are arranged in a cross shape, two vertical rib plates which are perpendicular to each other are connected with the right-angle edges bent inwards on the upper flat plate (10) and the lower flat plate (18), and the through holes are formed in the vertical rib plates.

4. A three-way shock absorber according to claim 2, wherein: the upper flat plate (10) is provided with a stud rod (9).

5. A three-way shock absorber according to claim 1, wherein: the base (1) comprises a reference flat plate and a cylinder arranged on the reference flat plate, and threaded holes used for fixing corresponding vibration reduction units are respectively formed in the side face of the cylinder and the reference flat plate.

6. A three-way shock absorber according to claim 5, wherein: the reference flat plate is also provided with a connecting hole for fixing the base (1).

7. A three-way shock absorber according to claim 1, wherein: the damping unit further comprises a limiting washer (4) and a limiting bush (5), two damping cushions respectively connected with two side faces of the assembly panel are arranged on the limiting bush (5), and the two damping cushions are fixed on the base (1) through the limiting washer (4) and a screw (8) penetrating through the limiting washer (4) and the limiting bush (5).

8. A three-way shock absorber according to claim 7, wherein: the end parts of the damping vibration attenuation pads are embedded into the through holes in the assembling panel, and intervals are reserved between the damping vibration attenuation pads on the two sides of the assembling panel.

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