CN212055666U

CN212055666U - Three-way shock absorber

Info

Publication number: CN212055666U
Application number: CN202020197068.4U
Authority: CN
Inventors: 孙军艳; 程国梁; 陈智瑞
Original assignee: Shaanxi University of Science and Technology
Current assignee: Shaanxi University of Science and Technology
Priority date: 2020-02-21
Filing date: 2020-02-21
Publication date: 2020-12-01
Anticipated expiration: 2030-02-21

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

Three-way shock absorber

Technical Field

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

Background

The vibration damper is a device for damping vibration and is widely applied. The shock absorber plays the effect of balanced and buffering load in the course of working, makes the moving part reach steadily. Most of the existing vibration dampers realize vibration reduction of a load force in a certain direction, but for some precision products, the vibration dampers are required to be capable of reducing vibration of the products in all directions of a three-dimensional space, and more rigorous requirements are provided for the environmental adaptability of the products, namely, the products are required to adapt to conditions of large overload, strong impact and the like, and also to meet requirements of wide temperature (-20 ℃ to +60 ℃), large-angle vibration frequency (80Hz to 120Hz) and the like.

The chinese patent CN107677262A adopts a scheme of simultaneous vibration reduction at multiple points in space, but each point is vibration reduction in one direction, and vibration in other directions cannot be decomposed, and the vibration reducer is easy to fail under a large-magnitude overload condition. In addition, in the case of simultaneously mounting the vibration damper at multiple points in space, the mounting accuracy of the product to be damped is difficult to ensure.

Disclosure of Invention

An object of the utility model is to provide a three-dimensional shock absorber.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

a three-way shock absorber comprises a connecting part, a base and a damping vibration attenuation device, wherein the damping vibration attenuation device comprises vibration attenuation units which are connected with the connecting part and the base and are respectively arranged along three directions which are mutually vertical or form a 90-degree angle, the connecting part comprises an assembly panel which is correspondingly intersected (for example, vertical) with the arrangement direction of each vibration attenuation unit, each vibration attenuation unit comprises a damping vibration attenuation pad arranged on the assembly panel, and the connecting part is separated from the base through the damping vibration attenuation pads.

Preferably, the connecting part specifically comprises a rib plate composite structure, the rib plate composite structure comprises an upper flat plate, a lower flat plate and more than two vertical rib plates arranged between the upper flat plate and the lower flat plate, and through holes for connecting damping vibration attenuation pads are respectively arranged on the lower flat plate and the vertical rib plates opposite to the base.

Preferably, the vertical rib plates are arranged in a cross shape, wherein two vertical rib plates perpendicular to each other are connected with the edges (two edges with 90-degree interval angles) of the upper flat plate and the lower flat plate which are bent inwards to form corresponding shapes, and the through holes are formed in the vertical rib plates.

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

Preferably, the base comprises a reference flat plate and a cylinder arranged on the reference flat plate, and threaded holes for fixing the corresponding vibration reduction units are respectively formed in the side face of the cylinder and the reference flat plate.

Preferably, the reference flat plate is further provided with connecting holes which are located at two sides of the connecting part and used for fixing the base.

Preferably, the vibration reduction unit further comprises a limiting washer and a limiting bush, two damping vibration reduction pads respectively connected with two side faces of the assembly panel are arranged on the limiting bush, and the two damping vibration reduction pads are fixed on the base through the limiting washer and screws penetrating through the limiting washer and the limiting bush.

Preferably, the end of the damping vibration-damping pad is embedded in the through hole, and a gap is reserved between the damping vibration-damping pads on the two sides of the assembling panel.

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

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

2) and connecting and fastening the connecting part with the device to be damped through a stud rod.

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

The beneficial effects of the utility model are embodied in:

three-dimensional shock absorber has adopted the structural style who arranges the damping unit along the direction of three mutually perpendicular or 90 degrees angles in the cubical space, and the damping unit that usable and adapting unit and base link to each other realizes the damping of the three direction of optional position point on the product installation face simultaneously, has anti big overload, strong impact, big angle vibration frequency's ability.

Further, the three-way shock absorber has adopted spacing bush, spacing washer to carry on spacingly to the damping vibration attenuation pad for the damping vibration attenuation pad is in the pressurized state under the overload condition, has avoided the vibration damping unit one end pressurized, the stress state that one end was drawn under the overload condition.

Further, the same damping vibration attenuation pad structure has been arranged to three-dimensional shock absorber in three direction, and not only simple structure, low cost have rigidity characteristics such as three-dimensional moreover, can protect the overload of + X, + Y, + Z, -X, -Y, -Z six directions, have good damping performance.

Further, in the three-way shock absorber, because damping vibration attenuation pad symmetrical arrangement is in the assembly panel both sides, the temperature deflection of damping unit can offset basically, can satisfy wide temperature range's operation requirement.

Further, among the three-way shock absorber, clearance (spacing distance) between the damping vibration damping pad can design and realize through the assembly of damping vibration damping pad and through-hole according to the vibration that two damping vibration damping pads received and the extreme condition of temperature variation for two damping vibration damping pads can not form under various conditions and interfere and influence mutually, thereby improve damping buffering effect.

Drawings

FIG. 1 is a schematic overall structure view (front view) of a three-way shock absorber according to an embodiment;

FIG. 2 is a schematic view (rear view) of the three-way shock absorber of the embodiment;

FIG. 3 is a schematic view showing the structure of a damping unit of the rubber damping vibration damping device (the flat pad and the elastic pad are not shown);

FIG. 4 is a view showing an assembly relationship of damping units of the rubber damping vibration damping device;

FIG. 5 is a schematic view of a structure of a connecting member;

FIG. 6 is a schematic structural view of a base;

in the figure: 1-a base; 2-rubber damping vibration-damping pad; 3-a connecting member; 4-a spacing washer; 5-a limiting bush; 6-flat cushion; 7-elastic cushion; 8-a screw; 9-stud rod; 10-upper flat plate; 11-X direction mounting holes; assembling rib plates in the 12-X direction; a 13-X direction reinforcing rib plate; a 14-Z-direction mounting hole; a 15-Y direction reinforcing rib plate; a 16-Y direction mounting hole; assembling rib plates in the 17-Y direction; 18-lower plate; a 19-X direction threaded hole; a threaded hole in the 20-Z direction; 21-Y direction threaded hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Structural design of vibration damper

Referring to fig. 1 and 2, the three-way vibration absorber of the present invention is assembled by a base 1, a connecting member 3 and a rubber damping vibration absorber. The connecting part 3 is arranged on the base 1, the connecting part 3 is provided with three mutually vertical assembling surfaces, and the three assembling surfaces of the connecting part 3 are correspondingly parallel to three mutually vertical reference surfaces of the base 1; the rubber-damped vibration damping device comprises three vibration damping units which connect three mounting faces of the connecting part 3 with corresponding reference faces in two directions perpendicular to each other in a plane and in a direction perpendicular to the plane (corresponding to X, Y and the Z axis, respectively).

Referring to fig. 3 and 4, each damping unit in the rubber damping vibration damping device comprises a screw 8, a flat pad 6, an elastic pad 7, a limit washer 4, a limit bush 5 and two rubber damping vibration damping pads 2. When in installation, the bolt 8 is used, and the elastic pad 7 and the flat pad 6 which sequentially penetrate through the bolt 8, spacing washer 4 fixes two relative rubber damping vibration attenuation pad 2 of tip and be located the inside spacing bush 5 of rubber damping vibration attenuation pad 2 on base 1's the corresponding reference surface (spacing bush 5 correspond the terminal surface between reference surface and rubber damping vibration attenuation pad 2 terminal surface), two relative one ends of rubber damping vibration attenuation pad 2 have the boss, the boss is from the mounting hole on both sides embedding adapting unit 3's the assembly face, leave certain clearance between the boss (leave the clearance in order to receive when extrudeing under the vibration condition, perhaps when the ambient temperature condition leads to the vibration attenuation pad expend with heat and contract with cold, two non-contact between each other of vibration attenuation pad, avoid mutual interference), two ends that the mounting hole was kept away from to two rubber damping vibration attenuation pads 2 are by spacing bush 5, spacing washer 4 carries on spacingly.

Referring to fig. 5, the connecting component 3 includes an integrated rib plate composite structure, the rib plate composite structure includes an upper flat plate and a lower flat plate (i.e., an upper flat plate 10 and a lower flat plate 18, the upper flat plate 10 is small, and the lower flat plate 18 is large) with similar shapes and different sizes, and four vertical rib plates located between the two flat plates, and a stud rod 9 is fixed at the top of the upper flat plate 10. The upper flat plate 10 and the lower flat plate 18 are two mutually parallel square flat plates, one side edge of each square flat plate is provided with an isosceles right triangle notch corresponding to the position of the square flat plate, and the corresponding sides of the upper flat plate 10 and the lower flat plate 18 are parallel. The four vertical rib plates are uniformly distributed along the diagonal line of the upper flat plate 10 at an angle of 90 degrees on the circumference and have the same distance with the center line of the stud rod 9, namely the four vertical rib plates form a hollow cross shape; wherein two vertical rib plates are respectively connected with the edges of the upper flat plate 10 and the lower flat plate 18 (the bevel edges of the isosceles right triangle) and are respectively perpendicular to the upper flat plate 10 and the lower flat plate 18, so that three mutually perpendicular and intersected planes are formed in space, namely the two vertical rib plates are respectively positioned in an X-direction plane and a Y-direction plane which are perpendicular to the plane of the lower flat plate 18, and are respectively used as a Y-direction assembling rib plate 17 and an X-direction assembling rib plate 12 of the vibration damping unit (another vertical rib plate which is positioned in the same plane with the X-direction assembling rib plate 12 is a Y-direction reinforcing rib plate 15, and another vertical rib plate which is positioned in the same plane with the Y-direction assembling rib plate 17 is an X-direction reinforcing rib plate 13), the Y-direction assembling rib plate 17, the X-direction assembling rib plate 12 and the lower flat plate 18 are respectively provided with a through hole and are used as mounting holes for positioning the assembling positions, X-direction mounting hole 11 and Z-direction mounting hole 14). The center of gravity of the whole connecting part 3 is positioned at the center of the stud rod 9, so that the fulcrum of a product to be damped and the center of gravity of the damper are positioned on the same axis, and the damping effect is improved to the maximum extent.

Referring to fig. 6, the base 1 includes a semicircular plate, and a threaded hole is respectively formed in the left and right sides (along the straight edge of the semicircular plate) of the semicircular plate, so that the semicircular plate can be fixed on a product mounting surface through a bolt. A raised cylinder is arranged near the circle center of the semicircular plate (for example, a position close to the circle center on a connecting line of the circle center and the arc midpoint of the semicircular plate), a raised cylinder cutting body is arranged at the arc midpoint of the semicircular plate, the cylinder cutting body is provided with three side surfaces, two side surfaces are mutually and vertically intersected, and the two side surfaces are respectively and mutually and vertically intersected with the upper surface of the semicircular plate where the raised cylinder is positioned, so that three reference surfaces for assembling the connecting part 3 are formed; the other side surface of the cylindrical cutting body is a part of the side surface of the cylinder, and the lower end of the side surface is overlapped with a small section in the middle of the arc edge of the semicircular flat plate. And the side surface of the cylindrical cutting body as a reference surface and the upper end surface of the raised cylinder are respectively provided with a threaded hole. Two damping units of the rubber damping vibration damping device are respectively connected with threaded holes (an X-direction threaded hole 19 and a Y-direction threaded hole 21 which penetrate through the side face of the cylindrical cutting body) on the upper side of the base 1 by screws 8 which can penetrate through mounting holes (an X-direction mounting hole 11 and a Y-direction mounting hole 16) which are arranged on corresponding vertical rib plates along the direction X, Y of the connecting component 3, and the third damping unit is connected with a threaded hole (a Z-direction threaded hole 20 which is positioned on a convex cylinder) on the lower side of the base 1 by screws 8 which can penetrate through mounting holes (a Z-direction mounting hole 14) which are arranged on the lower flat plate 18 along the Z direction of the connecting.

The three-way damper generally adopts four dampers with the same model and specification, and is placed under four supporting points (similar to four legs of a table) of a product so as to be combined for use, three-way dampers can be combined for use, and a single or two three-way dampers can be combined for use.

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

1) assembling a three-way damper to make three damping units of the rubber damping vibration damper located in X, Y, Z three directions;

2) the base 1 of the assembled three-way shock absorber is fixed on a product mounting surface by bolts and is firmly installed, the mounting surface of the product and the shock absorber base 1 are connected into a whole through threads, rigid connection is realized (the mounting surface is the workbench reference of the product, for example, the mounting surface can be the ground and the like), and the whole shock absorber is positioned between the workbench reference and a product to be damped, and plays the roles of supporting and damping.

3) The screw rod 9 on the connecting part 3 is in threaded connection and fastening with a product, so that the screw rod 9 and the product to be damped are connected into a whole through threads, and rigid connection is realized.

After the three-way shock absorber is installed, only the screw rod 9 in the shock absorber is in contact with a product to be damped, the base 1 (the lower surface of the semicircular flat plate) is in reference contact with the workbench, and the rest of the shock absorber is not in contact with the product. The connecting component 3 of the product to be damped and the three-way damper is fixedly connected into a rigid body, the base 1 at the lower part of the three-way damper and the workbench are fixedly connected into a rigid body in a standard manner, and the rubber damping cushion 2 (plastic body) is connected between the two rigid bodies, so that the damping cushion has a damping effect.

4) And (4) repeating the steps 1) to 3), and installing the rest three-way shock absorbers.

Dimension design of (two) three-way vibration damper

Because the three-way vibration absorber can be suitable for a plurality of product device types, the specific vibration absorber is designed according to the specific product device structure and the vibration absorbing effect, so that the specifications and the sizes of the connecting part, the base and the specific parts of the rubber damping vibration absorbing device of the three-way vibration absorber meet the related mechanical strength requirements. The stud rod 9 is connected with a product to be damped, and the specific shape and size of the stud rod are designed according to the installation mode and size of the product to be damped.

Three-way vibration damper

The three-way shock absorber is obviously different from the existing shock absorber in structural form and shock absorption mode, and has the following advantages:

1. the three-way shock absorber achieves the aim of X, Y, Z three-direction combined shock absorption, adopts the design of a three-way equal-rigidity shock absorption unit, has good shock absorption performance, provides good mechanical environmental conditions for instruments and electronic component products, and can ensure the working precision and reliability of the system.

2. In the vibration damping unit of the three-way vibration damper, two ends of a rubber damping vibration damping pad are limited by adopting a limiting bush and a limiting washer, so that the rubber damping vibration damping pad is kept in a pressed state under an overload condition, and the states that one end of the vibration damping unit is pressed and the other end of the vibration damping unit is pulled under the overload condition without a limiting device are avoided, thereby improving the large overload resistance of the vibration damper and achieving a better vibration damping effect; in addition, the working condition of the shock absorber can be improved, and the service life of the shock absorber is prolonged.

3. The three-way shock absorber can simultaneously realize the shock absorption in X, Y, Z three directions, has three-way equal rigidity, can protect the overload in + X, + Y, + Z, -X, -Y and-Z six directions, has good shock absorption performance, and can improve the capability of the product for resisting large overload, strong impact and large-angle vibration frequency.

4. In the vibration reduction unit of the three-way vibration reducer, the rubber damping vibration reduction pads are completely and symmetrically arranged, so that the temperature deformation can be basically offset, the use requirement of a wide temperature range can be met, and the adaptability of the product in the full temperature range is improved.

5. The three-way shock absorber is made of common shock absorption materials such as rubber damping shock absorption pads, and the six shock absorption pads in the three directions are completely the same, so that the three-way shock absorber is simple in structure and low in cost.

6. The three-way shock absorber provides the effect of simultaneous vibration reduction in a single point and multiple directions, and because each fulcrum can provide three-way vibration reduction, the mounting precision of a product is ensured, and the problem that the shock absorber is easy to lose efficacy under the condition of large-magnitude overload is solved.

7. The three-way vibration absorber can be used in combination, provides the vibration absorbing function of plane multipoint and space multipoint, meets the vibration absorbing requirement of expensive precision instruments, and can ensure the normal use of the instruments under severe working conditions of large overload, wide temperature range and the like.

Claims

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.