CN209761924U - Automatic locking device for shock isolation device - Google Patents
Automatic locking device for shock isolation device Download PDFInfo
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- CN209761924U CN209761924U CN201920271869.8U CN201920271869U CN209761924U CN 209761924 U CN209761924 U CN 209761924U CN 201920271869 U CN201920271869 U CN 201920271869U CN 209761924 U CN209761924 U CN 209761924U
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- vertical groove
- protection box
- automatic locking
- mass block
- pin shaft
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Abstract
An automatic locking device for a shock isolation device comprises an upper side base and a lower side base which are connected to the sides of different layer plates of the shock isolation device, wherein a clamping seat is fixedly arranged on the lower surface of the upper side base, a protection box is fixedly arranged on the upper surface of the lower side base, a vertical groove I with an open lower end is formed in the clamping seat, a permanent magnet is arranged at the top end of the vertical groove I, a mass block made of a permanent magnet material and a space for the mass block to move transversely are arranged in the protection box, a universal ball is arranged at the lower end of the mass block, a vertical groove II corresponding to the vertical groove I is formed in the top of the protection box, a pin shaft made of a magnetic material is positioned in the vertical groove I, and the length of the pin shaft is; when the top end is connected with the permanent magnet in an adsorption manner, the permanent magnet is separated from the second vertical groove. The utility model ensures that the shock isolation device does not move under the conditions of promotion of visitors, arrangement and exhibition of working personnel and the like; the automatic unlocking can be realized when an earthquake occurs, and the self-locking can be realized after the earthquake stops.
Description
Technical Field
The invention belongs to the technical field of seismic isolation and reduction, and particularly relates to an automatic locking device for a seismic isolation device.
Background
China is located in the middle zone of the Pacific seismic zone and the Eurasian seismic zone of two major seismic zones in the world and is a multi-seismic country. The damage of earthquake to museum cultural relics is extremely serious. At present, each large museum adopts a shock isolation device to protect cultural relics, and the shock isolation device can effectively reduce the earthquake effect and damage to the cultural relics, so that the high-efficiency and high-efficiency museum has good practicability. However, due to the sensitive reaction of the vibration isolation device, the vibration isolation device can move when slight shaking occurs, and the vibration isolation device has great insecurity. Meanwhile, when the visitors push or the workers spread, the shock insulation device needs to be kept still; when an earthquake occurs, a seismic isolation device is required to play a role. There is therefore a need for an automatic locking and unlocking device that addresses this problem.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an automatic locking device for a vibration isolation device, which can realize automatic locking and unlocking of the vibration isolation device, solve the problem of automatic switching between locking and unlocking states during earthquake and non-earthquake and realize the aim of keeping the vibration isolation device static during non-earthquake.
In order to achieve the purpose, the invention adopts the technical scheme that:
An automatic locking device for a shock isolation device comprises an upper base 41 and a lower base 42 which are connected to the side surfaces of different laminates of a shock isolation device 1, wherein a clamping seat 5 is fixedly arranged on the lower surface of the upper base 41, a protection box 7 is fixedly arranged on the upper surface of the lower base 42, the clamping seat 5 is provided with a vertical groove I with an open lower end, a permanent magnet is arranged at the top end of the vertical groove I, a mass block 8 made of a permanent magnet material and a space for the mass block 8 to transversely move are arranged in the protection box 7, a universal ball 9 is arranged at the lower end of the mass block 8, a vertical groove II corresponding to the vertical groove I is arranged at the top of the protection box 7, a pin shaft 6 made of a magnetic material is positioned in the vertical groove I, the length of the pin shaft meets the requirement that the pin shaft is positioned in the vertical groove I and the vertical groove II when the bottom end is in adsorption connection with the mass, realizing locking; when the top end is connected with the permanent magnet in an adsorption mode, the top end is separated from the second vertical groove, the horizontal movement of the clamping seat 5 and the protection box 7 is not limited any more, and unlocking is achieved.
The upper base 41 and the lower base 42 are respectively connected to the side surfaces of upper and lower adjacent laminates of the seismic isolation device 1.
The automatic locking devices are arranged in a plurality of numbers and are respectively arranged on different side surfaces and between different laminates of the shock insulation device 1.
The lateral surface of the space for the mass block 8 to move transversely in the protection box 7 is provided with a plurality of buffer springs 10 facing the mass block 8.
A certain gap is formed between the clamping seat 5 and the protection box 7.
The lower part of the mass block 8 is of a cylindrical structure, the upper part of the mass block is of a circular truncated cone structure, four universal balls 9 are fixed at the bottom of the cylinder through bolts 11, and the bottom in the protection box 7 is an inwards concave spherical surface.
The diameter of the first vertical groove is d1The diameter of the pin 6 is d2The second diameter of the vertical groove is d3The relationship is: d1＝d3≥d2+3mm，
The height of the clamping seat 5 is h1The vertical distance between the clamping seat 5 and the protection box 7 is h2The depth of the first vertical groove is h3The height of the pin shaft 6 is h4The lowest clearance height of the protective box 7 is h5The total height h of the mass 8 and the ball 96The highest clearance of the protection box 7 is h7The relationship is: h is1≥h3+5mm，h2+h3≥h4+2mm,h4≥h2+(h7-h6)+8mm，h5≥h6+5mm。
The vertical acting force of the permanent magnet in the clamping seat 5 on the pin shaft 6 is Fb1The vertical acting force of the mass block 8 on the pin shaft 6 is Fb2The mass of the pin shaft 6 is m1The relationship is: fb2+m1g>Fb1。
When the shock isolation device 1 is manually pushed, the horizontal acting force for pushing is F, and the acting force in the horizontal direction between the pin shaft 6 and the mass block 8 is FaThe friction force between the universal ball 9 and the bottom surface of the protection box 7 is f, and the relationship is as follows: fa+f>F；
When a slight shake occurs, the mass 8 receives an inertial force V equal to mxa during the shake1Wherein a is1for initial operating acceleration of the seismic isolation device 1, a1Design basic acceleration a not greater than seismic intensity of site of laying place of seismic isolation device determined according to building seismic design Specification0The relationship is: fa+f>V；
When the earthquake action is large, the mass block 8 is separated from the pin shaft 6 under the inertia action to realize unlocking, and the relation is as follows: v ═ mxa1>Fa+f，Fb1>m1g。
Compared with the prior art, the invention has the beneficial effects that:
1. The invention is connected between the upper plate and the lower plate of the shock isolation device, and can be provided with a plurality of locking devices according to the motion direction of the shock isolation device, thereby realizing multidirectional locking and unlocking of the shock isolation device.
2. The unlocking condition of the invention is that the inertia force is larger than the magnetic force, the device can be adjusted according to the seismic fortification intensity of the position of the seismic isolation device, and the device can flexibly realize unlocking under different conditions by changing the magnetic force of the permanent magnet in the inner groove of the clamping seat and the permanent magnet at the top of the mass block, the mass and the material of the mass block and the friction coefficient of the spherical surface in the protection box.
3. The concave spherical surface in the protective box can provide restoring force for the mass block, after the earthquake stops, the mass block returns to the original position, and the pin shaft is connected with the mass block again under the action of the magnetic force, so that self-locking is realized.
Drawings
Fig. 1 is a view showing the effect of the automatic locking device of the present invention mounted on a seismic isolation device.
Fig. 2 is a front view showing a locked state of the automatic locking apparatus of the present invention.
Fig. 3 is a sectional view showing a locking state of the automatic locking device of the present invention.
Fig. 4 is a front view showing an unlocked state of the automatic locking apparatus of the present invention.
Fig. 5 is a sectional view showing an unlocked state of the automatic locking apparatus of the present invention.
FIG. 6 is a front view of the combination of the mass and the gimbaled ball of the automatic locking apparatus of the present invention.
FIG. 7 is a top view of the combination of the mass and gimbaled ball of the automatic locking apparatus of the present invention.
FIG. 8 is a cross-sectional view of the combination of the mass and gimbaled ball of the automatic locking apparatus of the present invention.
In the figure, a vibration isolation device 1, a self-locking device 2, a bolt hole 3, an upper side base 41, a clamping base 5, a pin shaft 6, a protection box 7, a lower side base 42, a mass block 8, a universal ball 9, a buffer spring 10 and a bolt 11.
Detailed Description
For the purpose of describing the implementation objects, technical solutions and advantages of the present invention in detail, the technical solutions of the present invention in the practical use process are described below with reference to the accompanying drawings of the present invention. In the drawings, like numbering represents the same or similar elements. The examples described herein are some, but not all, examples of the invention. All other examples, which can be obtained by a person skilled in the art without making inventive changes, are within the scope of protection of the present invention. The embodiments of the present invention will be described in detail below with reference to the drawings and examples.
Fig. 1 is a view showing the effect of the automatic locking device 2 of the present invention mounted on a seismic isolation device 1. The automatic locking device 2 is connected between an upper layer plate and a lower layer plate of the shock isolation device 1, and a plurality of automatic locking devices 2 can be arranged on different side faces and between different layer plates according to the motion direction of the shock isolation device 1, so that multidirectional locking and unlocking of the shock isolation device 1 are achieved.
Fig. 2 is a front view of a locking state of the automatic locking apparatus of the present invention, and fig. 3 is a sectional view of the locking state of the automatic locking apparatus of the present invention. The automatic locking device adopts the technical scheme that: the automatic locking device comprises an upper side base 41 and a lower side base 42 which are used for being connected to the side faces of different laminates of the shock isolation device 1, wherein bolt holes 3 in the upper side base 41 and the lower side base 42 are matched with bolts to fixedly connect the automatic locking device 2 with the shock isolation device 1.
The lower surface of the upper base 41 is fixedly provided with a clamping seat 5, the upper surface of the lower base 42 is fixedly provided with a protection box 7, and a certain gap is reserved between the clamping seat 5 and the protection box 7. The card seat 5 is provided with a first vertical groove with an open lower end, the top end of the first vertical groove is provided with a permanent magnet, a mass block 8 made of a permanent magnet material and a space for the mass block 8 to transversely move are arranged in the protection box 7, the lower end of the mass block 8 is provided with a universal ball 9, the bottom in the protection box 7 is an inwards concave spherical surface, the mass block 8 is located at the central low point position of the inwards concave spherical surface under a normal state, a layer of polytetrafluoroethylene coating is arranged on the spherical surface, and a plurality of buffer springs 10 facing the mass block 8 are arranged on the side face of the space for the mass block 8 to. The top of the protection box 7 is provided with a vertical groove II corresponding to the vertical groove I, the pin shaft 6 made of magnetic materials is positioned in the vertical groove I, the length of the pin shaft meets the requirement that the pin shaft is positioned in the vertical groove I and the vertical groove II when the bottom end of the pin shaft is connected with the mass block 8 in an adsorption mode, and the top end of the pin shaft is separated from the vertical groove II when the top end of the pin shaft is connected with the permanent magnet in an adsorption mode. Therefore, the shock insulation device 1 connected with the shock insulation device can not slide to realize locking by penetrating through the clamping seat 5 and the protection box 7 under no shaking or slight shaking to limit horizontal transverse movement of the clamping seat 5 and the protection box 7 and transverse movement of the automatic locking device 2.
Fig. 4 is a front view showing an unlocked state of the automatic locking apparatus of the present invention. Fig. 5 is a sectional view showing an unlocked state of the automatic locking apparatus of the present invention. When the earthquake action is large, the mass block 8 slides in the concave spherical surface due to inertia, the pin shaft 6 is separated from the mass block 8, the pin shaft 6 moves upwards under the action of the attraction force of the permanent magnet at the top end of the vertical groove I, is separated from the vertical groove II and is separated from the protection box 7, the horizontal movement of the clamping seat 5 and the protection box 7 is not limited any more, and the automatic locking device 2 can move transversely at the moment, so that the unlocking is realized.
FIG. 6 is a front view of the combination of the mass and the gimbaled ball of the automatic locking apparatus of the present invention. FIG. 7 is a top view of the combination of the mass and gimbaled ball of the automatic locking apparatus of the present invention. FIG. 8 is a cross-sectional view of the combination of the mass and gimbaled ball of the automatic locking apparatus of the present invention. The lower part of the mass block 8 is of a cylindrical structure, the upper part of the mass block is of a circular truncated cone structure, and the circular truncated cone is designed to prevent the mass block from colliding with the inner wall of the protection box when sliding to the extreme position. Four universal balls 9 are fixed at the bottom of the cylinder through bolts 11, the four universal balls 9 are uniformly arranged at the bottom of the mass block 8, the sliding friction force of the mass block 8 is reduced due to the flexible sliding capacity of the universal balls 9, the unlocking condition of the automatic locking device 2 is reduced, and the sensitivity of the device is improved.
The mechanism of action of the present invention is illustrated below with reference to examples.
As shown in the figure, the diameter of the opening of the first vertical groove in the clamping seat 5 is d1The diameter of the pin shaft 6 is d2The second diameter of the vertical groove is d3design requirement d1＝d3≥d2And +3mm, so that the pin 6 is prevented from being rubbed by the first groove wall of the vertical groove and the second groove wall of the vertical groove in the movement process. The height of the clamping seat 5 is h1The distance between the clamping seat 5 and the protection box 7 is h2The depth of a hole of the vertical groove of the card is h3The height of the pin shaft 6 is h4The lowest clearance height of the protective box 7 is h5The total height h of the mass 8 and the ball 96The highest clearance of the protection box 7 is h7. Design requirement h1≥h3+5mm，h2+h3≥h4+2mm,h4≥h2+(h7-h6)+8mm，h5≥h6+5 mm. The design ensures that the pin shaft 6 can penetrate through the protection box 7 and the clamping seat 5 when being locked, and limits the transverse relative movement of the device; when the lock is unlocked, a sufficient gap is ensured between the pin shaft 6 and the protection box 7, and the pin shaft 6 is prevented from obstructing the relative movement of the protection box 7 and the card seat 5.
In the locked state, the horizontal acting force for manually pushing the vibration isolating device 1 is assumed to be F, and the acting force between the pin shaft 6 and the mass block 8 in the horizontal direction is assumed to be FaThe friction force between the universal ball 9 and the concave spherical surface of the protection box 7 is F, and the design requirement is Fa+f>F。
If a slight shake occurs, the mass 8 receives an inertial force V equal to mxa during the shake1Wherein a is1For initial operating acceleration of the seismic isolation device 1, a1Design basic acceleration a not greater than the site fortification intensity of the place where the shock insulation device 1 is placed determined according to the building earthquake design Specification0. Design requirement Fa+f>V, the design ensures that the automatic locking device 2 is in a locking state under the conditions of slight shaking and pushing of workers. The vertical acting force of the permanent magnet in the clamping seat 5 on the pin shaft 6 is assumed to be Fb1The vertical acting force of the mass block 8 on the pin shaft 6 is Fb2The mass of the pin shaft 6 is m1Design requirement Fb2+m1g>Fb1The design ensures that the pin shaft 6 is connected with the mass block 8 and does not break away when in a locking state.
When in an unlocking state, the mass block 8 is separated from the pin shaft 6 under the inertia effect to realize unlocking under the assumption that the earthquake effect is large, and the design requirement V is m multiplied by a1>Fa+f，Fb1>m1g, at the moment, the pin shaft 6 is separated from the mass block 8, the pin shaft 6 moves upwards under the action of the permanent magnet in the clamping seat 5, the pin shaft 6 limits the protection box 7 to be invalid, the protection box 7 and the clamping seat 5 can move relatively, and unlocking is achieved.
After the earthquake action is finished, the concave spherical surface provides restoring force for the mass block 8, the mass block 8 returns to the initial position, and the pin shaft 6 moves downwards due to the acting force of the magnetic force of the mass block 8 and is connected with the mass block 8 again, so that self-locking is realized. At this time, the design requirement F is satisfiedb2+m1g>Fb1。
That is, when the unlocking condition of the automatic locking device 2 is an earthquake, the inertia force of the mass block 8 is greater than the sliding friction force of the universal ball 9 and the magnetic force of the pin shaft 6 to the mass block 8 in the horizontal direction; the self-locking condition is that the acting force of the mass block 8 on the pin shaft 6 and the gravity of the pin shaft 6 are greater than the acting force of the permanent magnet in the clamping seat 5 on the pin shaft 6.
The device can be adjusted according to the actual situation, and the method comprises the following modes: 1. the mass of the mass block is adjusted to change the magnitude of the inertia force; 2. the friction coefficient is changed by changing the coating on the concave spherical surface of the protection box, so that the friction force is changed; 3. the acting force on the pin shaft is changed by adjusting the magnetic force of the permanent magnet at the top of the mass block and the permanent magnet in the groove in the clamping seat.
In conclusion, the shock isolation device can ensure that the shock isolation device does not move under the conditions of promotion of visitors, arrangement and exhibition of working personnel and the like; the locking device can realize automatic unlocking when an earthquake occurs, and the use requirement of the shock isolation device is met; the self-locking can be realized after the earthquake stops, and the earthquake-proof device is very convenient.
Claims (8)
1. An automatic locking device for a shock isolation device is characterized by comprising an upper base (41) and a lower base (42) which are connected to the side surfaces of different laminates of the shock isolation device (1), wherein a clamping seat (5) is fixedly arranged on the lower surface of the upper base (41), a protection box (7) is fixedly arranged on the upper surface of the lower base (42), the clamping seat (5) is provided with a vertical groove I with an open lower end, the top end of the vertical groove I is provided with a permanent magnet, a mass block (8) made of a permanent magnet and a space for the mass block (8) to transversely move are arranged in the protection box (7), the lower end of the mass block (8) is provided with a universal ball (9), the top of the protection box (7) is provided with a vertical groove II corresponding to the vertical groove I, a pin shaft (6) made of a magnetic material is positioned in the vertical groove I, and the length of the pin shaft meets the requirement that the pin shaft is positioned in the vertical groove, the locking device penetrates through the clamping seat (5) and the protection box (7), horizontal movement of the clamping seat (5) and the protection box (7) is limited, locking is achieved, the top end is separated from the vertical groove II when being connected with the permanent magnet in an adsorption mode, horizontal movement of the clamping seat (5) and the protection box (7) is not limited any more, and unlocking is achieved.
2. Automatic locking device for seismic isolation devices according to claim 1, characterized in that said upper base (41) and lower base (42) are attached to the sides of the adjacent floors above and below the seismic isolation device (1), respectively.
3. Automatic locking device for seismic isolation devices according to claim 1 or 2, characterized in that there are a plurality of said automatic locking devices, each arranged on different sides of the seismic isolation device (1) and between different layers of the floor.
4. Automatic locking device for seismic isolation as claimed in claim 1, characterized in that the side of the space in the protective box (7) for the lateral movement of the mass (8) is provided with buffer springs (10) directed towards the mass (8).
5. Automatic locking device for seismic isolation devices according to claim 1, characterized in that there is a certain clearance between the cassette (5) and the protective box (7).
6. The automatic locking device for a seismic isolation device according to claim 1, wherein the lower portion of the mass block (8) is of a cylindrical structure, the upper portion of the mass block is of a circular truncated cone structure, four universal balls (9) are fixed to the bottom of the cylinder through bolts (11), and the bottom inside the protection box (7) is of a concave spherical surface.
7. The automatic locking device for vibration isolator as claimed in claim 1, wherein the diameter of the first vertical groove is d1The diameter of the pin shaft (6) is d2The second diameter of the vertical groove is d3The relationship is: d1＝d3≥d2+3mm。
8. Automatic locking device for seismic isolation devices according to claim 1 or 7, characterized in that the height of the seat (5) is h1The vertical distance between the clamping seat (5) and the protection box (7) is h2The depth of the first vertical groove is h3The height of the pin shaft (6) is h4The minimum clearance height of the protection box (7) is h5The total height of the mass block (8) and the universal ball (9) is h6The highest clearance height of the protection box (7) is h7The relationship is: h is1≥h3+5mm，h2+h3≥h4+2mm,h4≥h2+(h7-h6)+8mm，h5≥h6+5mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920271869.8U CN209761924U (en) | 2019-03-04 | 2019-03-04 | Automatic locking device for shock isolation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920271869.8U CN209761924U (en) | 2019-03-04 | 2019-03-04 | Automatic locking device for shock isolation device |
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| Publication Number | Publication Date |
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| CN209761924U true CN209761924U (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920271869.8U Active CN209761924U (en) | 2019-03-04 | 2019-03-04 | Automatic locking device for shock isolation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826847A (en) * | 2019-03-04 | 2019-05-31 | 西安建筑科技大学 | A kind of automatic locking apparatus for earthquake isolating equipment |
| CN113531023A (en) * | 2021-06-10 | 2021-10-22 | 北京工业大学 | Overturning type horizontal shock-insulation trigger |
-
2019
- 2019-03-04 CN CN201920271869.8U patent/CN209761924U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826847A (en) * | 2019-03-04 | 2019-05-31 | 西安建筑科技大学 | A kind of automatic locking apparatus for earthquake isolating equipment |
| CN109826847B (en) * | 2019-03-04 | 2024-08-16 | 西安建筑科技大学 | Automatic locking device for shock insulation device |
| CN113531023A (en) * | 2021-06-10 | 2021-10-22 | 北京工业大学 | Overturning type horizontal shock-insulation trigger |
| CN113531023B (en) * | 2021-06-10 | 2022-08-16 | 北京工业大学 | Overturning type horizontal shock-insulation trigger |
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