Clamping device of vibration isolator

Abstract

The utility model provides a clamping device of a vibration isolator. The clamping device comprises a plurality of fixing units and a plurality of clamping units, the fixing unit comprises fixing pieces and arc-shaped clamps, the arc-shaped clamps are fixed on the test bed, and the multiple arc-shaped clamps fix the vibration isolator by surrounding the vibration isolator and being matched with the multiple fixing pieces. The clamping device can be suitable for vibration isolators with different shapes.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping devices, and more specifically, to a clamping device for a vibration isolator. Background Art

[0002] In the dynamic stiffness experiment, the experimental vibration isolator needs to vibrate in the direction to be measured. At this time, one end of the experimental vibration isolator needs to be fixed, and the other end is fixed on the exciter to realize the vibration of the vibration isolator. Fixing the vibration isolator requires the function of a clamping device. The fixed end of the vibration isolator should be installed on the clamping device and fixed on the experimental table together with the clamping device. The vibrating end of the vibration isolator needs to be connected to the exciter to achieve vibration. Since the vibration isolator and the clamping device itself have a certain mass, and the direction of acceleration during the vibration process is constantly changing, the experimental vibration isolator will be subjected to a large inertial force. Due to the particularity of the vibration isolator in the dynamic stiffness experiment, usually different vibration isolators have different shapes, resulting in the need to design a matching clamping device separately during the experiment. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a clamping device for a vibration isolator, which can adapt to vibration isolators with different contour shapes.

[0004] The utility model provides a clamping device for a vibration isolator, including: a plurality of fixing units; each fixing unit includes a fixing member and an arc-shaped clamp, the arc-shaped clamps are fixed on the test bench, and a plurality of the arc-shaped clamps fix the vibration isolator by surrounding the vibration isolator and cooperating with the plurality of fixing members.

[0005] In the above solution, the arc-shaped clamp for fixing the vibration isolator adopts an arc-shaped design, which can be applicable to vibration isolators with different shapes. The arc-shaped clamp cooperates with the fixing member to apply pressure to the vibration isolator, increasing the friction between the vibration isolator and the clamping device, thereby firmly fixing the arc-shaped clamp, and normal clamping can be achieved even if the vibration isolator is not installed on the straight line where the arc center is located.

[0006] As an optional way, the fixing member includes a bolt; a protrusion is provided at the arc top of the arc-shaped clamp, and a circular groove is opened in the protrusion along the direction from the center to the arc top, and the circular groove is used to screw in the bolt to fix the vibration isolator by the arc-shaped clamp. In the above solution, during the process of screwing each bolt into the circular groove, a plurality of arc-shaped clamps approach each other. As the arc-shaped clamps continuously approach, the pressure between the arc-shaped clamps and the vibration isolator continuously increases. Since the vibration isolator clamped between the plurality of arc-shaped clamps has a certain volume, the bolt will stop when it advances to a certain point during the inward pushing process because there is no gap between the arc-shaped clamp and the vibration isolator, thereby completing the clamping action of the arc-shaped clamp.

[0007] As an alternative, the fixing member further includes a pre-tightening screw; a first through hole is formed in the arc-shaped fixture along the direction extending in the diameter direction of the end point, and the first through hole is used to screw in the pre-tightening screw to connect a plurality of the arc-shaped fixtures. In the above solution, the two first through holes of two adjacent arc-shaped fixtures that are next to each other are used to install the pre-tightening screw. After the pre-tightening screw is tightened, the pressure between the arc-shaped fixture and the vibration isolator can be increased, and the fixing effect on the vibration isolator can be enhanced.

[0008] As an alternative, the device further includes: a base; the base is detachably connected to the arc-shaped fixture, and a second through hole is provided on the base, and the second through hole is used to fix the base on the test bench. In the above solution, the base and the arc-shaped fixture are detachably connected by bolts, and the base is provided with through holes that cooperate with the test bench to fix the base. When the fixing holes on the test bench change with different dynamic stiffness experiments, the base can be designed separately without modifying the arc-shaped fixture, which is convenient for replacing the base and saves processing time and cost.

[0009] As an alternative, a first threaded hole is formed in the base along the horizontal direction connected to the arc-shaped fixture, and the fixing member is inserted into the circular groove through the first threaded hole. In the above solution, the base and the arc-shaped fixture are detachably connected by the fixing member. At the same time, the base is fixed to the test bench, and the arc-shaped fixture is fixed to the base, thereby realizing the fixing of the arc-shaped fixture.

[0010] As an alternative, the device further includes: a gasket; the gasket is arranged under the base and is provided with third through holes corresponding to the second through holes one by one. In the above solution, adding a gasket under the base can increase the overall height of the clamping device and reserve more space axially for the dynamic stiffness experiment of the vibration isolator.

[0011] As an alternative, the device further includes: a connection unit; the connection unit is used to connect the vibration isolator and the exciter. In the above solution, the connector effectively transmits the power generated by the exciter to the vibration isolator to drive the vibration isolator to perform the expected vibration.

[0012] As an alternative, the connection unit includes: a first connecting member and a second connecting member; a fourth through hole and a second threaded hole are formed in the first connecting member, the fourth through hole is used to couple the vibrator, and the second threaded hole is used to connect the second connecting member; the second connecting member is connected to the vibration isolator by inserting into the inner ring of the vibration isolator. In the above solution, the connecting members are divided into a first connecting member and a second connecting member. The first connecting member connects the vibrator, and the second connecting member connects the vibration isolator. The upper and lower connecting members are detachably connected through the threaded holes. When the second connecting member is not applicable due to the shape change of the vibration isolator, only the second connecting member needs to be designed separately, which is convenient for replacement and saves processing time and cost.

[0013] As an alternative, a disc seat is provided at the end of the second connecting member close to the first connecting member, and a fifth through hole corresponding to the second threaded hole one by one is formed in the disc seat. The first connecting member and the second connecting member are fixed by screws screwed into the fifth through hole and the second threaded hole. In the above solution, a disc seat is provided on the second connecting member to connect with the first connecting member, making the connection between the first and second connecting members tighter and more secure.

[0014] As an alternative, third threaded holes are formed on both sides of the arc top of the arc-shaped clamp, and the third threaded holes are used to cooperate with screws to fix the vibration isolator. In the above solution, screwing screws into the third threaded holes can further enhance the fixing effect on the vibration isolator. Description of the Drawings

[0015] Figure 1 Shows a schematic structural diagram of a clamping device for a vibration isolator in an embodiment of the present application;

[0016] Figure 2 Shows a schematic structural diagram of the arc-shaped clamp in an embodiment of the present application;

[0017] Figure 3 Shows a schematic assembly diagram of the base and the arc-shaped clamp in an embodiment of the present application;

[0018] Figure 4 Shows a schematic structural diagram of the connection unit in an embodiment of the present application;

[0019] Figure 5 Shows a schematic structural diagram of another clamping device for a vibration isolator in an embodiment of the present application;

[0020] In the figure: 10 - clamping device, 100 - fixing member, 200 - arc-shaped clamp, 110 - bolt, 210 - protrusion, 220 - circular groove, 230 - first through hole, 240 - third threaded hole, 300 - base, 310 - second through hole, 400 - connecting unit, 410 - first connecting member, 420 - second connecting member, 411 - fourth through hole, 412 - second threaded hole, 421 - disc seat, 4211 - fifth through hole, 422 - threaded hole. Detailed implementation manners

[0021] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore are only examples and cannot be used to limit the protection scope of the present application.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0023] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application.

[0024] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0025] In the description of the embodiments of this application, the term "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B, which can represent: A exists alone, A and B exist simultaneously, and B exists alone. These three situations.

[0026] In the description of the embodiments of this application, the term "plurality" refers to two or more (including two).

[0027] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial direction", "radial direction", "circumferential direction", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present application.

[0028] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0029] As Figure 1 shown, Figure 1 is a schematic structural diagram of a clamping device for a vibration isolator in the embodiments of the present application. The clamping device 10 of the vibration isolator includes: a plurality of fixing units. The fixing unit includes a fixing member 100 and an arc-shaped clamp 200. The arc-shaped clamp 200 is fixed on the test bench. The plurality of arc-shaped clamps 200 fix the vibration isolator by surrounding the vibration isolator and cooperating with the plurality of fixing members 100.

[0030] The present utility model does not specifically limit the number of the plurality of fixing units. Those skilled in the art can adjust according to the actual situation, based on the fact that the plurality of fixing units can surround to form a closed circle. For example, it can be three fixing units, five fixing units, eight fixing units, etc. Taking two fixing units as an example, the two fixing units include two sets of the same fixing members 100 and arc-shaped clamps 200. The two arc-shaped clamps 200 are both semi-circular and surround and fix the fixed end of the vibration isolator together.

[0031] The present utility model does not specifically limit the material of the arc-shaped clamp 200. Those skilled in the art can adjust according to the actual situation. For example, it can be an iron sheet, a steel sheet, etc.

[0032] The arc-shaped clamp 200 can be directly fixed on the test bench, or indirectly fixed on the test bench by means of other objects fixed on the test bench.

[0033] After placing the vibration isolator in the arc-shaped fixture 200, a fixing member is required to apply pressure to increase the frictional force between the arc-shaped fixture 200 and the vibration isolator. The fixing member can be a bolt, nut, screw, pin, etc.

[0034] In the above solution, the arc-shaped fixture 200 for fixing the vibration isolator adopts an arc design and can be applicable to vibration isolators with different shapes. The arc-shaped fixture 200 cooperates with the fixing member 100 to apply pressure to the vibration isolator, increasing the frictional force between the vibration isolator and the clamping device, thereby firmly fixing the arc-shaped fixture 200, and normal clamping can be achieved even if the vibration isolator is not installed on the straight line where the arc center is located.

[0035] In some embodiments, the fixing member 100 includes a bolt 110. A protrusion 210 is provided at the arc top of the arc-shaped fixture 200. A circular groove 220 is formed in the protrusion 210 along the direction from the center to the arc top. The circular groove 220 is used to screw in the bolt 110 so that the arc-shaped fixture 200 fixes the vibration isolator.

[0036] As Figure 1 shown, the protrusion 210 is provided at the arc top of the arc-shaped fixture 200. The size and shape of the protrusion 210 can be adjusted according to specific situations, providing a long enough channel for the bolt 110 to screw into the arc-shaped fixture 200 and generate pressure through the protrusion 210.

[0037] In the above solution, during the process of screwing each bolt 110 into the circular groove 220, multiple arc-shaped fixtures 200 approach each other. As the arc-shaped fixtures 200 continuously approach, the pressure between the arc-shaped fixture 200 and the vibration isolator continuously increases. Since the vibration isolator clamped between multiple arc-shaped fixtures 200 has a certain volume, the bolt 110 will stop when it reaches a certain point during the inward pushing process because there is no gap between the arc-shaped fixture 200 and the vibration isolator, thereby completing the clamping action of the arc-shaped fixture 200.

[0038] In some embodiments, the fixing member 100 further includes a pre-tightening screw. A first through hole 230 is formed at the extension of the arc-shaped fixture 200 along the diameter direction where the end point is located. The first through hole 230 is used to screw in the pre-tightening screw to connect multiple arc-shaped fixtures 200.

[0039] As Figure 2 shown, Figure 2 is a schematic structural diagram of the arc-shaped fixture in the embodiment of the present application. Each arc-shaped fixture 200 has two end points. A first through hole 230 is formed at each end point along the diameter direction where the end point is located. After the bolt at the circular groove 220 is tightened, the pre-tightening screw at the first through hole 230 is tightened, which can increase the pressure between the arc-shaped fixture 200 and the vibration isolator to achieve the effect of increasing the frictional force.

[0040] In the above solution, the two first through holes 230 adjacent to each other in the two adjacent arc-shaped clamps 200 are used to install pre-tightening screws. After the pre-tightening screws are tightened, the pressure between the arc-shaped clamp 200 and the vibration isolator can be increased, enhancing the fixing effect on the vibration isolator.

[0041] In some embodiments, the above device further includes: a base 300, which is detachably connected to the arc-shaped clamp 200. A second through hole 310 is provided on the base 300, and the second through hole 310 is used to fix the base 300 on the test bench.

[0042] As Figure 3 shown, Figure 3 This is a schematic assembly diagram of the base and the arc-shaped clamp in the embodiment of the present application. The base 300 and the arc-shaped clamp 200 are detachably connected by bolts 110. The second through hole 310 on the base 300 corresponds to the fixing hole on the test bench. After the base 300 is fixed on the test bench, the arc-shaped clamp 200 connected to the base 300 is also fixed on the test bench.

[0043] In the above solution, the base 300 and the arc-shaped clamp 200 are detachably connected by bolts 110. The base 300 is provided with a second through hole 310 that cooperates with the test bench to fix the base 300. When the fixing hole on the test bench changes with different dynamic stiffness experiments, the second through hole 310 on the base 300 can be designed separately, and the overall structure of the base 300 does not need to be changed, nor does the arc-shaped clamp 200 need to be modified, which is convenient for replacing the base 300 and saves processing time and cost.

[0044] In some embodiments, the base 300 is provided with a first threaded hole along the horizontal direction connected to the arc-shaped clamp 200, and the fixing member 100 is inserted into the circular groove 220 through the first threaded hole.

[0045] The base 300 is provided with a first threaded hole that penetrates the base 300 along the horizontal direction connected to the arc-shaped clamp 200, and the direction of the first threaded hole is aligned with the circular groove 220.

[0046] The present application does not specifically limit the nominal diameter of the threaded hole, and those skilled in the art can adjust it according to the actual situation. For example, it can be an M4 threaded hole, an M6 threaded hole, an M8 threaded hole, etc. As an implementation manner, the first threaded hole is an M8 threaded hole.

[0047] In the above solution, the base 300 and the arc-shaped clamp 200 are detachably connected by the fixing member 100. At the same time, the base is fixed to the test bench, and the arc-shaped clamp 200 is fixed to the base 300, thereby realizing the fixing of the arc-shaped clamp 200.

[0048] In some embodiments, the above-mentioned device further includes: a gasket, which is arranged under the base 300 and is provided with third through holes corresponding one-to-one to the second through holes 310.

[0049] Adding a gasket under the base 300 can increase the overall height of the clamping device, reserving more space axially for the dynamic stiffness experiment of the vibration isolator. The centers of the third through holes on the gasket correspond one-to-one to those of the second through holes 310, that is, the top view of the gasket is consistent with that of the base 300, so that when the base 300 is fixed with screws, the gasket can also be fixed, ensuring the stability of the position and function of the gasket.

[0050] In the above solution, adding a gasket under the base 300 can increase the overall height of the clamping device, reserving more space axially for the dynamic stiffness experiment of the vibration isolator.

[0051] In some embodiments, the above-mentioned device further includes: a connection unit 400, which is used to connect the vibration isolator and the exciter.

[0052] The connection unit 400 between the exciter and the vibration isolator can be selected according to specific application scenarios and design requirements. For example, the connection unit can be a bolt, a fixture, a rigid connector, or a flexible connector, etc.

[0053] In the above solution, the connection unit 400 effectively transmits the power generated by the exciter to the vibration isolator to drive the vibration isolator to vibrate as expected.

[0054] In some embodiments, the above-mentioned connection unit 400 includes: a first connector 410 and a second connector 420. The first connector 410 is provided with a fourth through hole 411 and a second threaded hole 412. The fourth through hole 411 is used to couple with the exciter, and the second threaded hole 412 is used to connect the second connector 420. The second connector 420 is connected to the vibration isolator by inserting into the inner ring of the vibration isolator.

[0055] As Figure 4 shown, Figure 4 is a schematic structural diagram of the connection unit in the embodiment of the present application. The connection unit 400 can be disassembled into a first connector 410 and a second connector 420. The first connector 410 is connected to the exciter, and the second connector 420 is connected to the vibration isolator.

[0056] The first connector 410 is fixed through the fourth through hole 411 coupled with the exciter. Due to the differences of exciters, the position of the fourth through hole 411 on the first connector 410 can be adjusted.

[0057] In the above solution, the connecting unit 400 is divided into a first connecting member 410 and a second connecting member 420. The first connecting member 410 is connected to the vibrator, and the second connecting member 420 is connected to the vibration isolator. The first connecting member 410 and the second connecting member 420 are detachably connected through a second threaded hole 412. When the second connecting member 420 is not applicable due to the shape change of the vibration isolator, only the second connecting member 420 needs to be designed separately, which is convenient for replacement and saves processing time and cost.

[0058] In some embodiments, as Figure 4 shown, a disc seat 421 is provided at the end of the second connecting member 420 close to the first connecting member 410. A fifth through hole 4211 corresponding to the second threaded hole 412 one by one is provided on the disc seat 421. The first connecting member 410 and the second connecting member 420 are fixed by screws screwed into the fifth through hole 4211 and the second threaded hole 412.

[0059] The disc seat 421 on the second connecting member 420 can fix the upper end face of the vibration isolator. The fifth through hole 4211 on the disc seat 421 corresponds to the second threaded hole 412 on the first connecting member 410 one by one, and the second connecting member 420 and the first connecting member 410 can be fixed by screws. As an implementation manner, the second threaded hole 412 is an M4 threaded hole.

[0060] In addition, a threaded hole 422 is provided on the end face of the second connecting member 420 away from the first connecting member 410. After the second connecting member 420 is inserted into the inner ring of the vibration isolator, the lower end face of the vibration isolator can be fixed by screws, washers and the threaded hole 422. As an implementation manner, the threaded hole 422 is an M6 threaded hole.

[0061] In the above solution, a disc seat 421 is provided on the second connecting member 420 to connect with the first connecting member 410, making the connection between the first connecting member 410 and the second connecting member 420 tighter and more firm.

[0062] In some embodiments, third threaded holes 240 are provided on both sides of the arc top of the arc-shaped fixture 200. The third threaded holes 240 are used to cooperate with screws to fix the vibration isolator.

[0063] The vibration isolator structure is usually wrapped with plastic on the outside and rubber for vibration isolation in the middle part. Therefore, as Figure 2 shown, third threaded holes 240 are provided on both sides of the arc top of the arc-shaped fixture 200. Without affecting the operation of the vibration isolator, screws can be screwed into the outer shell of the vibration isolator here to enhance the fixing effect. As an implementation manner, the third threaded hole 240 is an M4 threaded hole.

[0064] In the above solution, screwing screws into the third threaded holes 240 can further enhance the fixing effect on the vibration isolator.

[0065] As Figure 5 shown, Figure 5 This is a schematic structural view of a clamping device for another vibration isolator in an embodiment of the present application, including two fixing units, a base 300, a first connecting member 410, and a second connecting member 420. The arc-shaped clamp 200 clamps the vibration isolator in a surrounding manner. The vibration isolator is fixed to the base 300 through the arc-shaped clamp 200. The base 300 has a certain thickness, and there is a first threaded hole on the base 300. After the bolt 110 passes through the first threaded hole, it is inserted into the arc-shaped clamp 200. Since the vibration isolator clamped between the two arc-shaped clamps 200 has a certain volume, when the process of the bolt 110 advancing towards the center point reaches a certain time point, it will stop because there is no gap between the arc-shaped clamp 200 and the vibration isolator. Continuing to tighten the bolt 110 to fix the arc-shaped clamp, thereby realizing the fixation of the vibration isolator.

[0066] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A clamping device for a vibration isolator, characterized in that, Comprising: A plurality of fixing units; The fixing unit includes a fixing member and an arc-shaped fixture. The arc-shaped fixture is fixed on the test bench, and a plurality of the arc-shaped fixtures fix the vibration isolator by surrounding the vibration isolator and cooperating with a plurality of the fixing members.

2. The device according to claim 1, characterized in that, The fixing member includes a bolt; A protrusion is provided at the arc top of the arc-shaped fixture. A circular groove is opened on the protrusion along the direction from the center of the circle to the arc top. The circular groove is used to screw in the bolt so that the arc-shaped fixture fixes the vibration isolator.

3. The device according to claim 2, characterized in that, The fixing member further includes a pre-tightening screw; A first through hole is opened at the extension of the arc-shaped fixture along the diameter direction where the end points are located. The first through hole is used to screw in the pre-tightening screw to connect a plurality of the arc-shaped fixtures.

4. The device according to claim 2 or 3, characterized in that, The device further includes: a base; The base is detachably connected to the arc-shaped fixture. A second through hole is provided on the base, and the second through hole is used to fix the base on the test bench.

5. The device according to claim 4, characterized in that A first threaded hole is opened on the base along the horizontal direction connected to the arc-shaped fixture. The fixing member is inserted into the circular groove through the first threaded hole.

6. The device according to claim 4, characterized in that, The device further includes: a gasket; The gasket is arranged below the base and is provided with third through holes corresponding to the second through holes one by one.

7. The device according to any one of claims 1 to 3, characterized in that, The device further includes: a connecting unit; The connecting unit is used to connect the vibration isolator and the exciter.

8. The device according to claim 7, characterized in that, The connecting unit includes: a first connecting member and a second connecting member; A fourth through hole and a second threaded hole are opened on the first connecting member. The fourth through hole is used to couple the exciter, and the second threaded hole is used to connect the second connecting member; The second connecting member is connected to the vibration isolator by inserting into the inner ring of the vibration isolator.

9. The device according to claim 8, characterized in that A disc seat is provided at the end of the second connecting member close to the first connecting member. A fifth through hole corresponding to the second threaded hole one by one is opened on the disc seat. The first connecting member and the second connecting member are fixed by screwing a screw into the fifth through hole and the second threaded hole.

10. The device according to claim 1, characterized in that, Third threaded holes are opened on both sides of the arc top of the arc-shaped fixture. The third threaded holes are used to cooperate with screws to fix the vibration isolator.

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