CN209800610U - Damping device for shock insulation support - Google Patents
Damping device for shock insulation support Download PDFInfo
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- CN209800610U CN209800610U CN201920591483.5U CN201920591483U CN209800610U CN 209800610 U CN209800610 U CN 209800610U CN 201920591483 U CN201920591483 U CN 201920591483U CN 209800610 U CN209800610 U CN 209800610U
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Abstract
The utility model relates to a damping device for a shock insulation support, which comprises a lead screw, a matching sleeve and a rotary damping mechanism; the matching sleeve is arranged on the lead screw, the inner wall of the matching sleeve is provided with a ball, and the ball is embedded into a thread groove of the lead screw and is used for rolling matching along the extending track of the thread groove, so that the lead screw rotates relative to the matching sleeve; one end or two ends of the screw rod are connected with the rotary damping mechanism. Rotate the lead screw and install on shock insulation support, the cooperation is sheathe in and is connected the historical relic base, when receiving the vibrations impact, the historical relic base is to the cooperation cover transmission horizontal direction impact force, the ball in the cooperation cover is along the thread groove motion of lead screw, it rotates to drive the lead screw, the horizontal direction impact force that will be to the historical relic base changes the turning force of lead screw into, realize the one-level buffering shock attenuation of historical relic base horizontal direction impact force, rotary damping mechanism is used for reducing the rotational speed of lead screw, further absorb the vibrations energy, realize the second grade buffering shock attenuation of the horizontal direction impact force of historical relic base, have better protection to the historical relic.
Description
Technical Field
The utility model relates to a historical relic buffering shock attenuation technical field particularly, relates to a damping device for isolation bearing.
background
China is located between the Pacific earthquake zone and the Eurasian earthquake zone, and most of the national soil is located in earthquake-prone areas.
more than half of museums in China are located in a high-intensity area with VI and above, earthquake activities are frequent, and every earthquake disaster extremely seriously damages the cultural relics displayed in the museums, thereby bringing a training of tragic pain to people.
the museum collection cultural relics have important cultural, historical and artistic values and great protection significance.
Most cultural relics in the collection of the cultural relics are mainly placed in a floating mode, and the cultural relics mainly move in the modes of sliding, shaking, twisting, overturning and the like under the action of earthquake dynamic load.
At present, the anti-seismic performance of cultural relics is improved by methods such as supporting, adhering, clamping, binding and the like in museums in China aiming at floating cultural relics in the museum. The methods can only improve the shock resistance of the cultural relics to a certain extent, and have poor buffering and damping effects on impact force in the horizontal direction; most of the existing shock insulation supports do not adopt a special damping device for energy absorption and shock absorption, and the shock amplitude of cultural relics cannot be effectively inhibited.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a damping device for isolation bearing through the mode of damping, realizes better shockproof effect.
In order to realize the above purpose of the utility model, adopt the following technical scheme:
A damping device for a shock insulation support comprises a screw rod, a matching sleeve and a rotary damping mechanism; the matching sleeve is arranged on the lead screw, the inner wall of the matching sleeve is provided with a ball, and the ball is embedded into a thread groove of the lead screw and is used for rolling matching along an extending track of the thread groove, so that the lead screw rotates relative to the matching sleeve;
One end or two ends of the lead screw are connected with the rotary damping mechanism.
Further, the screw pitch of lead screw for from the middle part of lead screw to the both ends of lead screw reduce gradually.
Furthermore, the cooperation cover includes the cover body and connecting plate, the cover body is installed on the lead screw, be provided with on the inner wall of the cover body and be convenient for install the mounting hole of ball, the connecting plate is installed on the cover body.
Further, one end or two ends of the lead screw are connected with the rotary damping mechanism through a sleeve or a gear.
Further, the shock-proof device further comprises a fixed seat, wherein the fixed seat is connected with the rotary damping mechanism, and the fixed seat is installed on the shock-proof support.
Further, the fixing seat is detachably connected with the rotary damping mechanism.
Furthermore, the lead screw is a single-head lead screw or a multi-head lead screw.
further, the screw rod clamping device further comprises a bearing seat used for erecting the screw rod.
Furthermore, the number of the bearing blocks is two, and the two bearing blocks are respectively arranged at positions close to two ends of the lead screw.
Further, the rotary damping mechanism is a viscous type rotary damping mechanism.
Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has:
The damping device for the shock insulation support is mainly composed of a screw rod, a matching sleeve, a rotary damping mechanism and the like; wherein, the matching sleeve is internally provided with a ball; the ball is embedded into the thread groove of the screw rod and is used for rolling and matching along the extending track of the thread groove, so that the rotation action of the screw rod relative to the matching sleeve is realized; the lead screw rotates and installs on the shock insulation support, according to the shock attenuation demand, connects on the one end or both ends of lead screw and rotates damping mechanism, and the cooperation is sheathe in and is connected the historical relic base.
When receiving vibrations and assaulting, the historical relic base is to the horizontal direction impact force of cooperation cover transmission, and the ball in the cooperation cover moves along the thread groove of lead screw to drive the lead screw and rotate, will change the horizontal direction impact force to the historical relic base into the turning force of lead screw, realize the one-level buffering shock attenuation to the horizontal direction impact force of historical relic base. Meanwhile, the instantaneous impact force in the horizontal direction is converted into the rotating force of the screw rod, so that the rotation of the screw rod can directly influence the displacement or shaking amount of the cultural relics on the matching sleeve. In the rotation process of the lead screw, a rotary damping mechanism is also designed at the end part of the lead screw; the rotary damping mechanism can reduce the rotating speed of the lead screw, further absorb vibration energy and realize secondary buffering and damping of impact force of the cultural relic base in the horizontal direction.
The ball of this application cooperation cover rolls through the thread groove of lead screw and removes to drive the lead screw and rotate, can carry out one-level buffering shock attenuation to the horizontal direction impact force. The rotating speed of the screw rod is reduced through the rotary damping mechanism, and secondary buffering and shock absorption are carried out on impact force in the horizontal direction.
therefore, this application is through, to the double buffering absorbing mode of horizontal direction impact force, has better buffering shock attenuation effect to the horizontal direction impact force that historical relic base received, effectively reduces the destruction of horizontal direction impact force to the historical relic on the historical relic base to historical relic on the historical relic base has better guard action.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a damping device for a seismic isolation bearing according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
Fig. 3 is a schematic structural view of the fitting sleeve according to the embodiment of the present invention.
Reference numerals: 1-a lead screw; 2-matching the sleeve; 3-a rotary damping mechanism; 4-a ball bearing; 11-thread groove; 21-a sleeve body; 22-a connecting plate; 5-a sleeve; 6-fixing the base; 7-bearing seat.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-3, the damping device for a seismic isolation bearing of the present application includes a screw rod 1 (i.e., a threaded rod), a fitting sleeve 2 and a rotary damping mechanism 3; the matching sleeve 2 is arranged on the screw rod 1, the ball 4 is arranged on the inner wall of the matching sleeve 2, the ball 4 is embedded into the thread groove 11 of the screw rod 1 and is used for rolling matching along the extending track of the thread groove 11, and then the rotation action of the screw rod 1 relative to the matching sleeve 2 is realized; one end or both ends of the screw rod 1 are connected with the rotary damping mechanism 3. Fig. 2 is a partially enlarged view of a portion a in fig. 1.
The application method and the working principle of the damping device for the vibration isolation support are as follows:
The damping device for the shock insulation support is mainly composed of a screw rod 1, a matching sleeve 2, a rotary damping mechanism 3 and the like; wherein, a ball 4 is arranged in the matching sleeve 2; the ball 4 is embedded into the thread groove 11 of the screw 1 and is used for rolling and matching along the extending track of the thread groove 11, so that the rotation action of the screw 1 relative to the matching sleeve 2 is realized; the lead screw 1 is rotatably installed on a shock insulation support, according to the shock absorption requirement, one end or two ends of the lead screw 1 are connected with the upper rotary damping mechanism 3, and the matching sleeve 2 is connected with the cultural relic base.
When receiving vibrations and assaulting, the historical relic base is to 2 transmission horizontal direction impact forces of cooperation cover, and ball 4 in the cooperation cover 2 moves along lead screw 1's thread groove 11 to drive lead screw 1 and rotate, will change the horizontal direction impact force to the historical relic base into the turning force of lead screw 1, realize the one-level buffering shock attenuation to the historical relic base horizontal direction impact force. Meanwhile, the instantaneous impact force in the horizontal direction is converted into the rotating force of the screw rod 1, so that the rotation of the screw rod 1 can directly influence the displacement or shaking amount of the cultural relics on the matching sleeve 2. In the rotation process of the screw rod 1, a rotary damping mechanism 3 is also designed at the end part of the screw rod; the rotary damping mechanism 3 can reduce the rotating speed of the lead screw 1, further absorb vibration energy and realize secondary buffering and damping of horizontal impact force of the cultural relic base.
This application cooperation cover 2's ball 4 rolls through lead screw 1's thread groove 11 and moves to drive lead screw 1 and rotate, can carry out one-level buffering shock attenuation to the horizontal direction impact force. The vibration energy is effectively absorbed through the rotary damping mechanism 3, so that the lead screw 1 obtains gentle mechanical motion, the rotating speed of the lead screw 1 is reduced, and secondary buffering and shock absorption are carried out on impact force in the horizontal direction.
Therefore, this application is through, to the double buffering absorbing mode of horizontal direction impact force, has better buffering shock attenuation effect to the horizontal direction impact force that historical relic base received, effectively reduces the destruction of horizontal direction impact force to the historical relic on the historical relic base to historical relic on the historical relic base has better guard action.
Specifically, as shown in fig. 1, the pitch of the screw shaft 1 is gradually reduced from the middle of the screw shaft 1 to both ends of the screw shaft 1.
Through the arrangement, the movement distance of the ball 4 along the thread groove 11 is gradually reduced when the screw 1 rotates for one circle, the thread pitch of the middle position of the screw is larger, and the thread pitch is gradually reduced when the screw extends to two ends; in the ball from the lead screw middle part to the tip motion process, initial damping is little, is favorable to damping device to start, and later stage damping increases (the screw is more and more dense promptly, and the pitch is more and more little) and can avoid mutual collision when the too big vibration, has better buffering shock attenuation effect to the impact force that historical relic base received.
It should be noted that, the pitch of the screw rod 1 is gradually reduced from the middle of the screw rod 1 to the two ends of the screw rod 1, which is only the optimal choice for the present application.
The utility model provides a screw 1's pitch can also use the equal pitch setting, and the mode that the equal pitch set up, screw 1 rotate the round for every, and ball 4 is equal along thread groove 11's movement distance, and the buffering shock attenuation effect to the impact force that historical relic base received is not like the mode that the screw 1's pitch gradually reduces from the middle part of screw 1 to screw 1's both ends.
Specifically, as shown in fig. 3, the fitting sleeve 2 includes a sleeve body 21 and a connecting plate 22, the sleeve body 21 is mounted on the screw rod 1, a mounting hole for mounting the ball 4 is formed in an inner wall of the sleeve body 21, and the connecting plate 22 is mounted on the sleeve body 21.
The number of the balls 4 in the present application is one, and a plurality of balls 4 may be used.
The sleeve body 21 and the connecting plate 22 are of an integral structure, so that manufacturing and processing are facilitated, and integral structural strength is guaranteed.
The connecting plate 22 can also be mounted on the sleeve 21 by welding, riveting, bolting, etc.
because the cover body 21 is directly connected with the cultural relic bottom plate, the contact area is smaller, the connection is not firm, the connecting plate 22 is installed on the cover body 21, the connection is carried out with the cultural relic bottom plate through the connecting plate 22, the contact area is increased through the connecting plate 22, and the connection strength is improved.
The size of the connecting plate 22 of the application is proportional to the size of the cultural relic substrate, namely, the larger the size of the cultural relic substrate is, the larger the size of the connecting plate 22 is, the smaller the size of the cultural relic substrate is, and the smaller the size of the connecting plate 22 is.
Specifically, as shown in fig. 2, one end or both ends of the screw shaft 1 are connected to the rotation damping mechanism 3 through a sleeve 5 or a gear.
As shown in fig. 1, the present application adopts a mode that both ends of a lead screw 1 are connected with a rotary damping mechanism 3 through a sleeve 5.
The sleeve 5 is adopted to facilitate the installation and the disassembly of the screw rod 1 and the rotary damping mechanism 3, and the rotary damping mechanism 3 can be directly connected with the two ends of the screw rod 1 without considering the installation and the disassembly.
And a gear can be used for replacing the sleeve 5, so that the two ends of the screw rod 1 are connected with the rotary damping mechanism 3 through the gear, the gear transmission is accurate, the efficiency is high, the structure is compact, the work is reliable, and the service life is long.
Specifically, as shown in fig. 2, the shock-absorbing device further comprises a fixed seat 6, wherein the fixed seat 6 is connected with the rotary damping mechanism 3, and the fixed seat 6 is installed on the shock-absorbing support.
Fixing base 6 is used for installing rotary damping mechanism 3, and rotary damping mechanism 3 passes through fixing base 6 to be installed on the shock insulation support, plays better fixed effect to rotary damping mechanism 3 through fixing base 6.
supporting blocks, supporting plates or supporting frames can also be adopted to replace the fixed seat 6.
It is also possible to mount the rotary damping mechanism 3 directly on the seismic isolation bearing.
Specifically, as shown in fig. 2, the fixing base 6 is detachably connected to the rotation damping mechanism 3.
The fixing seat 6 is detachably connected with the rotary damping mechanism 3, so that the rotary damping mechanism 3 is convenient to install and replace, and the installation and replacement efficiency of the damper is improved.
It is also possible that the permanent seat 6 is fixedly connected with the rotary damping mechanism 3, irrespective of the installation and replacement of the rotary damping mechanism 3 with the permanent seat 6.
The fixing seat 6 and the rotary damping mechanism 3 can be fixedly connected by welding and the like.
Specifically, the screw 1 is a single-head screw or a multi-head screw.
The single-head thread has a small lead angle (not easy to slide), and the friction force formed by screwing the screw and the nut is large (self-locking capability), so that the single-head thread is used for locking the thread, such as fixing the screw and the nut of a ceiling fan, fixing the joint of a gas bottle and fixing and connecting parts in mechanical equipment; and the multi-thread has a larger lead angle (easy to slide), and the friction force formed by screwing the screw and the nut is smaller, so that the multi-thread is used for transmitting power and movement, such as a jack for lifting a wheel for maintenance, a bench vice for clamping a workpiece for bench work, a lathe screw for machining threads and the like.
The lead of the multiple-start thread is larger, the lead of the double-start thread with the same pitch is twice that of the single-start thread, but after the lead of the double-start thread is larger, the self-locking capability is reduced.
According to the analysis, a single-head screw or a multi-head screw is selected to be used according to different use occasions.
Specifically, the lead screw 1's lead screw lead angle is greater than the equivalent friction angle of screw pair for cooperation cover 2 can not be from the lock on lead screw 1, when guaranteeing that the historical relic base receives the impact force, can play the shock attenuation effect of buffering through the damping device who is used for the shock insulation support of this application to the historical relic base, and the historical relic that reduces on the historical relic base receives the impact force, thereby reduces the probability that the historical relic damaged.
If 2 auto-locks of cooperation cover are on lead screw 1, when the historical relic base received the impact force, can not cushion the shock attenuation to the historical relic base through the damping device who is used for shock insulation support of this application, and the historical relic on the historical relic base can directly receive the damage, and the probability that the historical relic damaged is higher.
Specifically, as shown in fig. 1, the screw driving device further includes a bearing seat 7 for erecting the screw 1.
In this application, the bearing frame 7 on the lead screw 1 is two, and two bearing frames 7 are installed respectively in the position that is close to lead screw 1 both ends.
The two bearing blocks 7 are respectively arranged on the shock insulation support, and the screw rod 1 can bear larger impact force through the two bearing blocks 7.
It should be noted that, two bearing seats 7 are provided on the screw 1, which is only one preferable mode in the present application, and for those skilled in the art, the number of the bearing seats 7 is increased or decreased according to the actual use situation, and the number of the bearing seats 7 is not exemplified here.
Specifically, the rotation damping mechanism 3 employs a viscous type rotation damping mechanism.
The viscous type rotary damping mechanism is usually filled with a fluid medium with certain viscosity, and viscous damping energy consumption is generated by utilizing the circular motion of a rotating body in a cavity, so that the viscous type rotary damping mechanism is a damper related to the rotating speed.
When an earthquake comes, the viscous rotary damping mechanism absorbs and consumes the impact energy of the earthquake to the maximum extent, and the impact and damage of the earthquake to objects (such as cultural relics) placed on the upper part of the shock insulation support are greatly relieved.
The viscous type rotary damping mechanism has the following characteristics:
(1) Speed of rotation
The viscous-type rotation damping mechanism changes the torque according to the change of the rotation speed. The change rule is as follows: the speed is increased and the torque is also increased. The speed slows and the torque also drops. The start-up torque is different from the standard torque.
(2) Temperature characteristic
The viscous-type rotation damping mechanism also changes the torque according to the change of the temperature of the use environment. The change rule is as follows: the torque decreases when the ambient temperature increases, and the torque increases when the ambient temperature decreases. This is because the viscosity of the viscous oil in the damper changes when the ambient temperature changes. However, when the ambient temperature returns to normal temperature, the torque also returns to the original value.
It should be noted that the rotation damping mechanism is a viscous type rotation damping mechanism, which is only a preferable way of the present application, and it is obvious to those skilled in the art that other types of rotation damping mechanisms may also be adopted, which is not an example here.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A damping device for a shock insulation support is characterized by comprising a lead screw, a matching sleeve and a rotary damping mechanism; the matching sleeve is arranged on the lead screw, the inner wall of the matching sleeve is provided with a ball, and the ball is embedded into a thread groove of the lead screw and is used for rolling matching along an extending track of the thread groove, so that the lead screw rotates relative to the matching sleeve; one end or two ends of the lead screw are connected with the rotary damping mechanism.
2. The damping device for a seismic isolation bearing of claim 1, wherein the pitch of the lead screw is gradually reduced from the middle of the lead screw to both ends of the lead screw.
3. The damping device for a vibration-isolating support as claimed in claim 1, wherein the fitting sleeve includes a sleeve body and a connecting plate, the sleeve body is mounted on the screw rod, the inner wall of the sleeve body is provided with a mounting hole for mounting the ball, and the connecting plate is mounted on the sleeve body.
4. The damping device for a seismic isolation bearing of claim 1, wherein one or both ends of the lead screw are connected to the rotary damping mechanism through a sleeve or a gear.
5. The damping device for a vibration-isolating support according to claim 1, further comprising a fixing seat connected to the rotary damping mechanism, the fixing seat being mounted on the vibration-isolating support.
6. A damping apparatus for a seismic isolation bearing as claimed in claim 5 wherein said anchor block is removably attached to said rotary damping mechanism.
7. The damping device for the seismic isolation bearing of claim 1, wherein the lead screw is a single-head lead screw or a multi-head lead screw.
8. A damping apparatus for a seismic isolation mount as claimed in claim 1, further comprising a bearing housing for mounting said lead screw.
9. The damping device for a seismic isolation bearing of claim 8, wherein there are two bearing blocks, and the two bearing blocks are respectively installed at positions close to both ends of the screw rod.
10. A damping apparatus for a seismic isolation mount according to any one of claims 1 to 9, wherein said rotary damping mechanism is a viscous type rotary damping mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920591483.5U CN209800610U (en) | 2019-04-26 | 2019-04-26 | Damping device for shock insulation support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920591483.5U CN209800610U (en) | 2019-04-26 | 2019-04-26 | Damping device for shock insulation support |
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| Publication Number | Publication Date |
|---|---|
| CN209800610U true CN209800610U (en) | 2019-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920591483.5U Active CN209800610U (en) | 2019-04-26 | 2019-04-26 | Damping device for shock insulation support |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109944901A (en) * | 2019-04-26 | 2019-06-28 | 故宫博物院 | Damping unit for shock isolating pedestal |
| CN109944901B (en) * | 2019-04-26 | 2024-06-28 | 故宫博物院 | Damping device for shock insulation support |
-
2019
- 2019-04-26 CN CN201920591483.5U patent/CN209800610U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109944901A (en) * | 2019-04-26 | 2019-06-28 | 故宫博物院 | Damping unit for shock isolating pedestal |
| CN109944901B (en) * | 2019-04-26 | 2024-06-28 | 故宫博物院 | Damping device for shock insulation support |
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