CN106500063A - Vibration reduction device and lamp - Google Patents

Abstract

The invention discloses a vibration damper, which comprises a shell, a cover plate, a vibration damper and a connecting piece, wherein the cover plate is fixedly connected with the shell; the cover plate is covered on the shell to form an accommodating cavity, and the cover plate is provided with a mounting hole; the shock absorber is arranged in the accommodating cavity and comprises a first shock absorption block and a second shock absorption block, the first shock absorption block and the second shock absorption block respectively comprise a plurality of elastic sheets and a plurality of hard gaskets, the elastic sheets and the hard gaskets are alternately overlapped, the second shock absorption block is overlapped on the first shock absorption block along the direction of a central shaft of the mounting hole, is close to the cover plate and is provided with a connecting hole, and the connecting hole is communicated to the mounting hole; the fixing part of the connecting piece is clamped between the second vibration reduction block and the first vibration reduction block, and the connecting part of the connecting piece extends out of the mounting hole. The vibration damping device provided by the invention clamps the connecting piece arranged in the vibration damping device through the first vibration damping block and the second vibration damping block which are alternately overlapped by the elastic sheet and the hard gasket, so that the lamp can effectively damp vibration when working in a strong vibration place with large displacement. The invention also provides a lamp.

Description

Vibration reduction device and lamp

technical field

The invention relates to the field of lamps, in particular to a vibration reduction device and a lamp.

Background technique

Lamps will vibrate violently in strong vibration places, such as large electric shovels, stamping equipment, mining equipment, lifting equipment, port equipment, etc. In order to ensure safety during operation, lamps are required to have better anti-vibration performance.

As shown in Figure 1, the damping lamps in the prior art generally include a damping device and a lamp body mounted on the damping device. The damping device consists of two layers of rubber pads 1 and T between the two layers of rubber pads. Shaped connecting bracket 2, and the protrusion of the T-shaped connecting bracket passes through one layer of rubber pad 1, and the lamp body is installed on the protrusion of the T-shaped connecting bracket. When the inventor used the vibration reduction lamp in a strong vibration place with a large displacement, he found that the vibration reduction device can only absorb the vibration energy generated by the lamp in the longitudinal direction through the rubber pad 1, and cannot slow down the vibration received by the lamp in the transverse direction. If the faults are not reduced, it cannot meet the customer's on-site vibration requirements. At the same time, in the case of severe vibration, it may cause the lamp bracket to break, and its anti-vibration performance is not good, which brings a greater safety hazard.

Contents of the invention

The object of the present invention is to provide a vibration damping device with low energy consumption and high output.

In order to solve the above technical problems, the present invention provides a vibration damping device, which includes a housing, a cover plate, a shock absorber, and a connector; the cover plate is set on the housing to form a storage cavity, and the cover The plate is provided with installation holes; the shock absorber is arranged in the receiving cavity, the shock absorber includes a first shock absorber and a second shock absorber, and the first shock absorber and the second shock absorber Each block includes a plurality of elastic sheets and a plurality of hard gaskets, the plurality of elastic sheets and the plurality of hard gaskets are alternately stacked, and the second damping block is along the central axis of the mounting hole The direction is superimposed on the first damping block, and is close to the cover plate, and a connection hole is opened, and the connection hole is connected to the installation hole; the connection part includes a fixing part and a connecting part, and the fixing part The part is sandwiched between the second damping block and the first shock absorbing block, and the connecting part is passed through the connecting hole and extends out of the mounting hole, and the connecting part is used for installing lamps.

Wherein, a dislocation structure is provided between the fixing part and the first damping block, and the dislocation structure is used to increase the frictional force between the fixing part and the first damping block.

Wherein, the fixing portion includes a first fixing surface facing the first damping block, and the dislocation structure includes a plurality of dislocation protrusions arranged on the first fixing surface.

Wherein, the fixing portion includes a first fixing surface facing the first damping block, and the dislocation structure includes wave stripes arranged on the first fixing surface.

Wherein, a plurality of dislocation protrusions are evenly arranged along the edge of the first fixing surface.

Wherein, the dislocation protrusions are wedge-shaped protrusions.

Wherein, the number of elastic pieces of the first damping block is even, and the number of elastic pieces of the second damping block is odd.

Wherein, a plurality of balls are arranged in the elastic piece of the first damping block and/or the second damping block.

Wherein, the radius of the ball is 1-5 mm.

The present invention also provides a lamp, which includes a lamp body and a shock absorbing device, and the lamp body is installed on the connecting part of the connecting piece.

The vibration damping device provided by the present invention clamps the connecting piece provided therein through the first vibration damping block and the second vibration damping block alternately stacked by elastic sheets and hard washers, wherein the vibration damper is multi-layered structure, when the lamp installed on the connecting piece is subjected to strong vibration, the elastic pieces in the first damping block and the second damping block absorb the longitudinal vibration energy, and the lateral vibration of the lamp is passed through the The misalignment displacement between the elastic sheet and the hard gasket in the first damping block and the second damping block can be slowed down, so that when the lamp works in a strong vibration place with a large displacement, the vibration can be effectively reduced, ensuring The safety and service life of lamps and lanterns.

Description of drawings

In order to illustrate the technical solution of the present invention more clearly, the accompanying drawings used in the implementation will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. Technical personnel can also obtain other drawings based on these drawings without paying creative labor.

Fig. 1 is the schematic diagram of the damping device that prior art provides;

Fig. 2 is a schematic diagram of the damping device provided by the first embodiment of the present invention;

Fig. 3 is an exploded schematic view of the damping device in Fig. 2;

Fig. 4 is the schematic diagram of the first damping block in the damping device in Fig. 3;

Fig. 5 is a schematic diagram of lateral displacement of the first damping block of Fig. 4 when subjected to external vibration;

Fig. 6 is a schematic diagram of the longitudinal extrusion of the first damping block in Fig. 4 when it is subjected to external vibration;

Fig. 7 is a schematic diagram of a connector in the shock absorbing device in Fig. 2;

Fig. 8 is a schematic diagram of the first damping block provided by the second embodiment of the present invention;

Fig. 9 is a schematic diagram of the connection between the vibration damping device and the support rod provided by the third embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

first embodiment

Please refer to FIG. 2 and FIG. 3 , a vibration damping device 100 provided in Embodiment 1 of the present invention includes a housing 10, a cover plate 20, a shock absorber 30, and a connector 40; the cover plate 20 is covered on the A housing cavity 13 is formed on the housing 10, and the cover plate 20 is provided with an installation hole 20a; the shock absorber 30 is disposed in the housing cavity 13, and the shock absorber 30 includes a first damping block 31 and The second damping block 32, the first damping block 31 and the second damping block 32 all include a plurality of elastic sheets 311 and a plurality of hard washers 312, the plurality of elastic sheets 311 and the A plurality of hard spacers 312 are stacked alternately, and the second damping block 32 is stacked on the first damping block 31 along the central axis of the installation hole 20a and is close to the cover plate 20 , and open a connection hole 32a, the connection hole 32a communicates with the installation hole 20a; the connection piece 40 includes a fixing part 41 and a connecting part 42, and the fixing part 41 is sandwiched between the second damping block 32 Between the first damping block 31, and the connecting portion 42 is passed through the connecting hole 32a, and extends out of the mounting hole 20a, and the connecting portion 42 is used for installing a lamp (not shown) .

The first shock absorber 31 and the second shock absorber 32 that are stacked alternately by the elastic sheet 311 and the hard washer 312 clamp the connecting piece 40 provided therein, wherein the shock absorber 30 is a multi-layer laminated structure , when the lamp installed on the connector 40 is subject to strong vibration, the elastic sheet 311 in the first damping block 31 and the second damping block 32 absorbs the longitudinal vibration energy, while the lateral vibration of the lamp Then, the misalignment between the elastic sheet 311 and the hard spacer 312 in the first damping block 31 and the second damping block 32 is used to slow down, so that when the lamp works in a strong vibration place with a large displacement It can effectively reduce vibration and ensure the safety and service life of the lamp.

In this embodiment, the housing 10 is a square metal shell with a square inner cavity, and the housing 10 includes a frame shell 11 with two open ends and a bottom plate 12, and the bottom plate 12 is arranged on the frame shell One of the open ends of 11 forms a closed end, and the edge of the bottom plate 12 extends toward the edge away from the open end of the frame shell 11. The structure of the housing 10 can not only be placed more firmly on the installation site (such as the ground ), the connection strength of the housing 10 can also be enhanced.

In this embodiment, the cover plate 20 is made of metal, the size of the cover plate 20 matches the opening end of the housing 10, and an installation hole 20a is opened in the middle of the cover plate 20, when the When the cover plate 20 is mounted on the casing 10 , the mounting hole 20 a communicates with the receiving cavity 13 . Of course, in other embodiments, the shapes of the housing 10 and the cover plate 20 can also be set according to actual needs, for example, circular.

In this embodiment, please refer to FIG. 4 , the structure of the second damping block 32 and the first damping block 31 are basically the same, and they are all made of elastic sheets 311 and hard gaskets 312 alternately stacked. made. The first damping block 31 is placed at the bottom of the receiving cavity 13, the second damping block 32 is stacked and connected to the first damping block 31, and is tightly attached to the cover plate 20, and The connection hole 32a is connected to the installation hole 20a, that is, the shock absorber 30 is in a compressed state, and the shock absorber 30 can better absorb vibration energy when subjected to an external force. The first shock absorber 31 and the second shock absorber 32 that are stacked alternately by the elastic sheet 311 and the hard washer 312 clamp the connecting piece 40 provided therein, wherein the shock absorber 30 is a multi-layer laminated structure Please refer to FIG. 5, when the lamp installed on the connector 40 is subjected to strong vibration, the elastic piece 311 in the first damping block 31 and the second damping block 32 absorbs the longitudinal vibration energy, please Referring to Fig. 6, the lateral vibration of the lamp is slowed down by the misalignment between the elastic sheet 311 and the hard gasket 312 in the first damping block 31 and the second damping block 32, so that the lamp Working in a strong vibration place with a large displacement can effectively reduce vibration and ensure the safety and service life of the lamp.

Specifically, in order to further optimize the structure of the shock absorber 30, the material of the elastic sheet 311 is rubber with better elastic properties, and the material of the hard gasket 312 is metal. As shown in FIG. 5 , the inventors have found through a large number of experiments that the lamination of the above two materials can have a better displacement in the horizontal direction, thereby better slowing down the vibration from the lateral direction. Of course, in other embodiments, the material of the elastic sheet 311 can also be silicone or other elastic materials, and the material of the hard gasket 312 can also be plastic nylon or others.

In this embodiment, the connecting member 40 is made of metal. The connector 40 includes a fixed part 41 and a connecting part 42 integrally connected; the fixed part 41 is a circular plate, and the connecting part 42 is provided protruding from the middle position of the fixed part 41, and in order to facilitate installation with a lamp , the connecting portion 42 is set as a hollow rod. That is, the cross section of the connecting piece 40 is T-shaped, the fixing part 41 is clamped between the second damping block 32 and the first damping block 31, and the connecting part 42 passes through the The connecting hole 32a reaches out to the installation hole 20a, so as to facilitate installation with an external lamp. Of course, in other embodiments, the connecting member 40 may also be a screw-like structure, and the lamp and the screw are screwed together.

When the damping device 100 is installed, the first damping block 31 is first placed on the bottom of the housing 10, the second damping block 32 is sleeved on the connecting part 42 of the connecting piece 40, and then the The fixing portion 41 of the connecting member 40 is placed on the first damping block 31 , and finally the cover plate 20 is placed on the housing 10 to clamp the connecting member 40 .

Preferably, the number of elastic pieces 311 of the first damping block 31 is even, the number of elastic pieces 311 of the second damping block 32 is odd, and the uppermost layer of the first damping block 31 is elastic. The bottom layer of the second damping block 32 is an elastic sheet 311. In particular, the number of elastic sheets 311 of the first damping block 31 is 10, and the number of elastic sheets 311 of the second damping block 32 311 for 11. The inventor found through a large number of experiments that setting the number of elastic pieces 311 in the first damping block 31 and the second damping block 32 to 10 and 11 respectively can optimize the structure of the vibration damping device 100, The anti-vibration performance of the vibration-damping device 100 is improved. Specifically, when the number of elastic pieces 311 in the first damping block 31 and the second damping block 32 is set to 10 and 11 respectively, the acceleration at the resonance point is reduced from 5g to 3g, and the vibration drops by 40%. for best results. Of course, in other embodiments, the number of elastic pieces 311 in the first damping block 31 and the second damping block 32 can also be determined according to the actual situation, for example, the first damping block The amount of elasticity in the block 31 and the second damping block 32 is all set at 2, then the acceleration at the resonance point is reduced to 4.5g from 5g, and the vibration can be reduced by 10%; the first damping block 31 and the The quantity of elasticity in the second damping block 32 is set at 3 and 5 respectively, the acceleration at the resonance point is reduced from 5g to 4.2g, and the vibration drops by 16%; the first damping block 31 and the The quantity of elasticity in the second damping block 32 is all arranged at 5, and the acceleration of the resonance point is reduced to 4g from 5g, and vibration drops by 20%; The quantity of the elasticity in is set at 15 and 16 respectively, and the acceleration of the resonance point is reduced to 3.8g from 5g, and the vibration drops by 24%; The number of springs is set at 20, the acceleration at the resonance point is reduced from 5g to 4.4g, and the vibration is reduced by 12%.

For further improvement, please refer to FIG. 7 , a dislocation structure 411a is provided between the fixed part 41 and the first damping block 31, and the dislocation structure 411a is used to increase the distance between the fixed part 41 and the first damping block. Frictional force between a damping block 31.

By setting the dislocation structure 411a between the fixing part 41 and the first damping block 31, the friction force between the fixing part 41 and the first damping block 31 is increased, so that the damping The vibrating device 100 can slow down larger vibrations in the lateral direction, thus having better anti-vibration performance.

In this embodiment, the fixing portion 41 includes a first fixing surface 411 facing the first damping block 31 , and the dislocation structure 411a includes a plurality of dislocation protrusions arranged on the first fixing surface 411 . Since the connecting member 40 is a separate component and is made of metal, the dislocation structure 411a is provided on the first fixing surface 411, which is convenient for processing and forming. Certainly, in other embodiments, the dislocation structure 411a may also be provided on an end surface of the first damping block 31 facing the fixing portion 41, for example, the dislocation structure 411a is pasted on the first An anti-slip sticker on a shock absorbing block 31 or a plurality of protrusions provided on the first shock absorbing block 31 . Of course, in other embodiments, the fixing portion 41 includes a first fixing surface 411 facing the first damping block 31 , and the dislocation structure 411 a includes wave stripes disposed on the first fixing surface 411 .

For further improvement, a plurality of dislocation protrusions are uniformly arranged along the edge of the first fixing surface 411 .

In this embodiment, there are four dislocation protrusions, which are evenly protruded on the edge of the first fixing surface 411. There is a relatively large pressing force between the edge of the fixed part 41 and the first damping block 31, so that the edge of the fixing part 41 is most closely connected with the first shock absorbing block 31, so that the connecting piece 40 is subjected to severe It is not easy to move when vibrating, increasing the stability of the connecting member 40 and improving the anti-vibration performance of the vibration-damping device 100 . Specifically, the dislocation protrusions are wedge-shaped protrusions. The dislocation protrusion is set in a shape with a narrow bottom and a wide top to further strengthen the pressing force between it and the first damping block 31 , so that the anti-vibration performance of the vibration-damping lamp is further improved.

second embodiment

Please refer to FIG. 8 , the structure of the damping device (not shown) provided in Embodiment 2 of the present invention is substantially the same as that of the damping device 100 provided in Embodiment 1, except that the first damping block 231 and/or Or the elastic piece 2311 of the second damping block 232 is provided with a plurality of balls 231b.

In this embodiment, the elastic piece 2311 of the first damping block 231 is provided with a plurality of balls 231b.

A plurality of balls 231b are arranged in the elastic piece 2311 in the first damping block 231, so that the balls 231b can generate pressing forces in all directions centered on the ball 231b inside the elastic piece 2311, when the When the vibration damping device receives an external vibration force, it will offset the internal force generated by the ball 231b in the elastic sheet 2311, further slowing down the vibration of the vibration damping device in all directions, thereby further improving the vibration damping The vibration resistance of the device.

In this embodiment, the radius of the ball 231b is 1-5 mm. When the inventor implemented the damping device, he found that it had better anti-vibration performance compared with the damping device in the prior art, and the thickness of the elastic piece 2311 in the first damping block 231 was different, and the ball 231b Different radii will also have different damping effects.

The upper and lower rubber thicknesses of the damping device in the prior art are respectively 6 mm, and the acceleration at the resonance point is reduced from 11 g to 9.5 g.

When the radius of the ball 231b in the damping device in the embodiment of the present invention is 3mm, and the thickness of the rubber is 6mm, the acceleration at the resonance point is reduced from 11g to 7g, and the vibration is reduced by 36%, compared with the damping device in the prior art It has better anti-vibration performance.

When the radius of the ball 231b in the vibration damping device in the embodiment of the present invention is 5mm, and the thickness of the rubber is 5.5mm, the acceleration at the resonance point is reduced from 11g to 9g, and the vibration is reduced by 18%, compared with the vibration damping device in the prior art It has better anti-vibration performance.

When the radius of the ball 231b in the damping device in the embodiment of the present invention is 4mm, and the thickness of the rubber is 6mm, the acceleration at the resonance point is reduced from 11g to 8g, and the vibration is reduced by 27%, compared with the damping device in the prior art. More anti-vibration performance.

When the radius of the ball 231b in the damping device in the embodiment of the present invention is 3mm, and the thickness of the rubber is 7mm, the acceleration at the resonance point is reduced from 11g to 8g, and the vibration is reduced by 27%. More anti-vibration performance.

When the radius of the ball 231b in the damping device in the embodiment of the present invention is 2mm, and the rubber thickness is 8mm, the acceleration at the resonance point is reduced from 11g to 9g, which can be reduced by 18%. Compared with the damping device in the prior art, it has More anti-vibration performance.

When the radius of the ball 231b in the vibration damping device in the embodiment of the present invention is 1mm, and the thickness of the rubber is 9mm, the acceleration at the resonance point is reduced from 11g to 10g, which is 9% lower than that of the vibration damping device in the prior art. anti-vibration performance.

It can be concluded from the above data that the least 18% vibration reduction of the vibration damping device is better than that of the prior art, so the vibration damping device has better anti-vibration performance.

For further improvement, multiple balls 231b are arranged in the elastic piece 2311 in the second damping block (not shown).

A plurality of balls 231b are arranged in the elastic sheet 2311 in the second damping block (not shown), so that the balls 231b generate pressing forces in all directions centered on the balls 231b inside the elastic sheet 2311 , when the vibration damping device is subjected to an external vibration force, it will offset the internal force generated by the ball 231b in the elastic sheet 2311, further slowing down the vibration of the vibration damping device in all directions, thereby further improving The anti-vibration performance of the damping device.

In this embodiment, the radius of the plurality of balls 231 b in the second damping block 232 is 1-5 mm.

third embodiment

The embodiment of the present invention also provides a lamp, which includes a lamp body (not shown) and the vibration reduction device 100 in Embodiment 1 or the vibration reduction device 200 in Embodiment 2, and the lamp body is installed on the On the connecting part of the connector 40.

In this embodiment, please refer to FIG. 9 , the lamp body includes a support rod 50, the support rod 50 is elongated, and a bearing hole 50a is opened in the middle of the support rod 50, and the support rod 50 passes through the bearing The hole 50a is sleeved on the connecting portion 42 of the connecting member 40 .

When the lamp starts to be installed, the first damping block is first placed on the bottom of the housing, the second damping block is sleeved on the connecting part of the connecting piece, and then the connecting piece The fixing part is placed on the first damping block, and then the cover plate is set on the housing to clamp the connecting piece; finally, the bearing rod is sleeved on the bearing hole through the bearing hole. on the connection part of the above-mentioned connector.

The first shock absorber and the second shock absorber that are stacked alternately by the elastic sheet and the hard spacer are used to clamp the connecting piece therein, wherein since the shock absorber is a multi-layer laminated structure, when the connecting piece When the luminaire installed on the top is subjected to strong vibration, the elastic sheets in the first damping block and the second shock absorbing block absorb the longitudinal vibration energy, and the lateral vibration of the lamp is passed through the first shock absorbing block and the second shock absorbing block. The displacement between the elastic piece and the hard spacer in the second damping block is slowed down, so that when the lamp works in a strong vibration place with a large displacement, the vibration can be effectively reduced, ensuring the safety and service life of the lamp.

The above description is a preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also considered Be the protection scope of the present invention.

Claims (10)

1. A damping device, characterized in that it includes a housing, a cover plate, a shock absorber, and a connector; the cover plate is set on the housing to form a receiving cavity, and the cover plate is provided with an installation hole The shock absorber is arranged in the accommodation cavity, the shock absorber includes a first shock absorber and a second shock absorber, and the first shock absorber and the second shock absorber both include multiple a plurality of elastic sheets and a plurality of hard washers, the plurality of elastic sheets and the plurality of hard washers are overlapped alternately, and the second damping block is overlapped along the central axis of the mounting hole On the first damping block, and close to the cover plate, a connection hole is provided, and the connection hole is connected to the installation hole; the connection piece includes a fixing part and a connecting part, and the fixing part is sandwiched between Between the second damping block and the first damping block, the connecting portion is passed through the connecting hole and extends out of the installation hole, and the connecting portion is used for installing a lamp. 2. The vibration damping device according to claim 1, wherein a dislocation structure is provided between the fixed part and the first damping block, and the dislocation structure is used to increase the distance between the fixed part and the first damping block. The friction force between the first damping blocks. 3. The vibration damping device according to claim 2, wherein the fixing portion includes a first fixing surface facing the first vibration damping block, and the dislocation structure includes a multiple dislocation bumps. 4. The vibration damping device according to claim 2, wherein the fixing portion includes a first fixing surface facing the first vibration damping block, and the dislocation structure includes a wavy stripes. 5 . The vibration damping device according to claim 3 , wherein a plurality of the dislocation protrusions are uniformly arranged along the edge of the first fixing surface. 6 . 6. The vibration damping device according to claim 4, wherein the dislocation protrusion is a wedge-shaped protrusion. 7 . The vibration damping device according to claim 1 , wherein the first damping block has an even number of elastic pieces, and the second vibration damping block has an odd number of elastic pieces. 8 . The shock absorbing device according to claim 1 , wherein a plurality of balls are arranged in the elastic piece of the first shock absorbing block and/or the second shock absorbing block. 8 . 9. The vibration damping device according to claim 8, characterized in that, the radius of the ball is 1-5 mm. 10. A lamp, characterized by comprising a lamp body and the vibration damping device according to any one of claims 1-9, wherein the lamp body is installed on the connecting portion of the connecting piece.