A purely mechanical locking-unlocking mechanism for use in earthquake isolation devices for cultural relics

Abstract

This invention relates to a purely mechanical locking-unlocking mechanism for use in cultural relic seismic isolation devices, belonging to the field of locking-unlocking mechanism design; it includes an upper plate assembly, a lower plate assembly, a dust cover, a locking-unlocking mechanism, two reset bolts, and two nylon ropes; wherein, the lower plate assembly is a horizontally placed rectangular plate structure; the upper plate assembly is horizontally positioned above the center of the lower plate assembly; the locking-unlocking mechanism is installed between the upper plate assembly and the lower plate assembly; the dust cover provides a seal for the upper plate assembly and the lower plate assembly; the two reset bolts are symmetrically installed on the inner walls of the left and right sides of the dust cover; each reset bolt is connected to the locking-unlocking mechanism via a nylon rope, realizing the unlocking and reset of the locking-unlocking mechanism; this invention enables the cultural relic seismic isolation device to be locked in a normal seismic-free state and reliably unlocked under a given seismic wave acceleration excitation, so that the cultural relic seismic isolation device meets the normal working objectives.

Description

Technical Field

[0001] This invention belongs to the field of locking and unlocking mechanism design, and relates to a purely mechanical locking-unlocking mechanism for use in cultural relic isolation devices. Background Technology

[0002] A cultural relic isolation device is a type of cultural relic protection device. Its basic function is to generate relative motion in the horizontal direction under seismic wave excitation, reducing the energy of seismic waves transmitted from the ground to the cultural relic, thus ensuring the safety of the cultural relic placed on the isolation device. According to the technical requirements for normal use of cultural relic isolation devices, a locking and unlocking mechanism is required as an auxiliary mechanism. Its basic function is to ensure the normal use of the device: under unexpected disturbances, the upper plate assembly locks and does not shift; under the excitation of a seismic wave of a set intensity, it automatically unlocks, allowing the cultural relic isolation device to operate normally.

[0003] Chinese patent CN115324992A, entitled "A Ball-Type Seismic Response Locking Device," comprises a lower fixed block, an upper fixed block, a limiting block, and a limiting pin. The limiting pin's tip is inserted into the upper fixed block from bottom to top, and its bottom end passes through the lower fixed block and contacts the tip of the limiting block. The limiting block includes a universal ball, a slider, and a support end. When an earthquake occurs, the limiting block senses the earthquake, and its inertial kinetic energy changes accordingly. When the inertial kinetic energy exceeds the frictional energy dissipation, the universal ball rolls, the limiting block falls, and the device unlocks. This design requires high machining and assembly precision for the limiting pin, universal ball, slider, and support end, and also cannot quickly reset.

[0004] Chinese patent CN115750649A, entitled "An Anti-vibration Locking Device," comprises an upper locking block, a pin hole, and a main locking body. The main locking body consists of a lower locking block, a locking module, and an inertial mass block. The locking module is located inside the lower locking block. The inertial mass block abuts against the lower locking block and the locking module on both sides. Under normal conditions, the anti-vibration locking device locks the upper and lower plates of the isolator, preventing them from sliding against each other. During an earthquake, the device immediately unlocks, restoring the sliding capability of the upper and lower plates. Due to the use of locking balls and ball tracks, it requires high precision in manufacturing and assembly, limiting its application in the field of cultural relic seismic isolation. In practical use, electromagnetic locking and unlocking mechanisms are costly and require external power or capacitors, necessitating high maintenance requirements. Complex mechanical locking and unlocking mechanisms have numerous parts and low reliability. Therefore, the existing locking and unlocking mechanisms cannot meet the design requirements of low cost, versatility, and maintenance-free operation, nor can they meet the development needs of large-scale assembly on cultural relic isolation devices. Summary of the Invention

[0005] The technical problem solved by this invention is to overcome the shortcomings of the prior art and propose a purely mechanical locking-unlocking mechanism for cultural relic isolation devices. This mechanism enables the cultural relic isolation device to be locked in the absence of seismic waves and reliably unlocked under a given seismic wave acceleration excitation, so that the cultural relic isolation device can meet the normal working objectives.

[0006] The solution of the present invention is: A purely mechanical locking-unlocking mechanism for use in cultural relic isolation devices includes an upper plate assembly, a lower plate assembly, a dust cover, a locking-unlocking mechanism, two reset bolts, and two nylon ropes; The lower plate assembly is a horizontally placed rectangular plate structure; the upper plate assembly is horizontally positioned above the center of the lower plate assembly; the locking and unlocking mechanism is installed between the upper plate assembly and the lower plate assembly; the dust cover seals the upper plate assembly and the lower plate assembly; two reset bolts are symmetrically installed on the inner walls of the left and right sides of the dust cover; each reset bolt is connected to the locking and unlocking mechanism through a nylon wire to achieve the unlocking and reset of the locking and unlocking mechanism.

[0007] In the aforementioned purely mechanical locking-unlocking mechanism for a cultural relic isolation device, the locking-unlocking mechanism includes a bracket, a left anti-rebound clip, a right anti-rebound clip, a conical locking pin, an umbrella-shaped lock core, a tension spring, a compression spring, and an adjuster. The bracket is a horizontally placed frame structure; the bottom of the bracket is fixedly connected to the lower plate assembly; a conical locking pin is set at the top of the bracket, and the top of the conical locking pin is fixedly connected to the upper plate assembly; an umbrella-shaped lock cylinder is vertically positioned at the center of the bracket; a compression spring is fitted in the middle of the umbrella-shaped lock cylinder; a hollow frame is provided at the bottom of the bracket; the bottom of the umbrella-shaped lock cylinder passes through the hollow frame and extends out from the bottom of the hollow frame; a compression spring is fitted on the bottom outer wall of the umbrella-shaped lock cylinder; an adjuster is fitted on the bottom outer wall of the umbrella-shaped lock cylinder, and the adjuster is fixedly embedded in the bottom wall of the hollow frame; the top of the spring contacts the bottom of the step on the side wall of the umbrella-shaped lock cylinder, and the bottom of the spring contacts the upper surface of the adjuster; left and right anti-rebound clips are horizontally symmetrically arranged on both sides of the umbrella-shaped lock cylinder; the fixed ends of the left and right anti-rebound clips are mounted on the upper surface of the bracket through a rotating joint; a tension spring is horizontally mounted on the rotating ends of the left and right anti-rebound clips.

[0008] In the aforementioned purely mechanical locking-unlocking mechanism for a cultural relic isolation device, a conical groove is provided at the center of the bottom surface of the conical locking pin; the position of the conical groove corresponds to the top position of the umbrella-shaped lock core.

[0009] In the aforementioned purely mechanical locking-unlocking mechanism used in a cultural relic isolation device, the rotating ends of the left and right anti-rebound clips are opened relative to the fixed ends, and then closed by the traction of a tension spring.

[0010] In the aforementioned purely mechanical locking-unlocking mechanism for a cultural relic isolation device, the top sidewall of the conical locking pin is provided with an umbrella-shaped structure along the circumference. When the left and right anti-rebound clips are rotated open, the inner walls of the left and right anti-rebound clips are clamped at the outer wall of the umbrella-shaped structure, thereby keeping the left and right anti-rebound clips open.

[0011] In the aforementioned purely mechanical locking-unlocking mechanism used in a cultural relic isolation device, one end of a nylon rope is connected to the corresponding reset bolt, and the other end is connected to the rotating end of the left anti-rebound clip; one end of another nylon rope is connected to the corresponding reset bolt, and the other end is connected to the rotating end of the right anti-rebound clip.

[0012] In the aforementioned purely mechanical locking-unlocking mechanism used in a cultural relic vibration isolation device, the locking process of the locking-unlocking mechanism is as follows: By manually pulling out two reset bolts on both sides, the rotating ends of the left and right anti-rebound clips are opened relative to the fixed ends via two nylon ropes. Under the restoring force of the compression spring, the umbrella-shaped lock cylinder moves vertically upward until the top of the umbrella-shaped lock cylinder extends into the conical groove of the conical lock pin, thus locking. After releasing the two reset bolts, under the restoring force of the tension spring, the left and right anti-rebound clips rotate and close, clamping onto both sides of the umbrella structure, completing the locking process. The reset process of the locking and unlocking mechanism is the same as the unlocking and locking process.

[0013] In the aforementioned purely mechanical locking-unlocking mechanism used in a cultural relic vibration isolation device, the unlocking process of the locking-unlocking mechanism is as follows: When vibration occurs, the conical groove sidewall of the conical locking pin presses against the umbrella-shaped lock cylinder under the action of the vibration force, causing the umbrella-shaped lock cylinder to move downward; at the same time, under the action of the restoring force of the tension spring, the left and right anti-rebound clips continue to rotate and close; under the action of the left and right inward spring force of the tension spring, the left and right anti-rebound clips clamp inward, separating the umbrella-shaped lock cylinder at the bottom of the left and right anti-rebound clips, and finally realizing the movement separation between the conical locking pin and the umbrella-shaped lock cylinder, thus unlocking.

[0014] In the aforementioned purely mechanical locking-unlocking mechanism used in a cultural relic isolation device, the left anti-rebound clip, the right anti-rebound clip, and the bracket form a lever structure. To ensure that the umbrella-shaped lock cylinder can unlock under any circumstances, the force balance relationship of the lever structure is as follows:

[0015] In the formula, This refers to the engagement stroke of the tension spring when the left or right anti-rebound clip is clamped. This refers to the engagement stroke of the tension spring when the left or right anti-rebound clip is clamped. To fix the stiffness of the close-coil tension spring for the left or right anti-rebound clip; The length of the longer side of the lever mechanism; The length of the shorter side of the lever mechanism; The coefficient of friction is the contact point between the left or right anti-rebound clip and the umbrella-shaped lock cylinder.

[0016] In the aforementioned purely mechanical locking-unlocking mechanism used in a seismic isolation device for cultural relics, to ensure that the umbrella-shaped lock core unlocks under the action of horizontal inertial force during a known seismic acceleration excitation, the force balance relationship of the umbrella-shaped lock core is the downward component of the horizontal inertial force. Greater than the upward restoring force of the compression spring on the umbrella-shaped lock cylinder. That is, the force relationship satisfies:

[0017]

[0018]

[0019] In the formula, This represents the initial free length of the compression spring. This refers to the compressed length of the spring after it is unlocked. The stiffness of the compression spring; Unlock acceleration for seismic waves; It is the acceleration due to gravity; The inertial mass of the upper plate assembly; The vertical cone angle of the conical groove.

[0020] The advantages of this invention compared to the prior art are: (1) The present invention adopts a spring, anti-rebound clip, umbrella-shaped lock core and conical locking pin design. Compared with the existing mechanical locking and unlocking mechanism, the structure is relatively simple, the processing cost is low, the assembly accuracy requirement is low, and the versatility is good. (2) The present invention adopts a bottom adjuster design, which can adjust the initial working length of the compression spring according to the needs, thereby adjusting its preload, so as to adjust the locking force, making the locking and unlocking mechanism adaptable to the locking and unlocking needs under different horizontal inertial force excitation under different magnitudes of seismic wave excitation; (3) The present invention adopts a nylon thread opening anti-rebound clip design, which has a simple structure and can be remotely controlled, improving the reset capability of the locking and unlocking mechanism, thus greatly improving the reliability and convenience of the mechanism. Attached Figure Description

[0021] Figure 1 This is a front view of the purely mechanical locking-unlocking mechanism of the present invention; Figure 2 This is a top view of the purely mechanical locking-unlocking mechanism of the present invention; Figure 3 This is a schematic diagram of the locking and unlocking mechanism of the present invention; Figure 4 This is a perspective view of the locking and unlocking mechanism of the present invention in the locked state. Figure 5 This is a top view of the locking and unlocking mechanism of the present invention in the locked state; Figure 6 This is a perspective view of the locking and unlocking mechanism of the present invention in its unlocked state. Figure 7 This is a top view of the locking and unlocking mechanism of the present invention in the unlocked state; Figure 8 This is a schematic diagram of the tension spring in the locking and unlocking mechanism of the present invention. Figure 9 This is a schematic diagram of the force applied to the compression spring of the locking and unlocking mechanism of the present invention. Detailed Implementation

[0022] The present invention will be further described below with reference to the embodiments.

[0023] This invention provides a purely mechanical locking-unlocking mechanism for a cultural relic isolation device. This purely mechanical locking-unlocking mechanism can lock the cultural relic isolation device in the absence of seismic waves under normal conditions and reliably unlock it under a given seismic wave acceleration excitation, so that the cultural relic isolation device can meet the normal working objectives.

[0024] Purely mechanical locking-unlocking mechanisms used in earthquake isolation devices for cultural relics, such as Figure 1 , Figure 2As shown, the assembly specifically includes an upper plate assembly 1, a lower plate assembly 2, a dust cover 3, a locking / unlocking mechanism 4, two reset bolts 5, and two nylon ropes 14. The lower plate assembly 2 is a horizontally placed rectangular plate structure; the upper plate assembly 1 is horizontally positioned above the center of the lower plate assembly 2; the locking / unlocking mechanism 4 is installed between the upper plate assembly 1 and the lower plate assembly 2; the dust cover 3 seals the upper plate assembly 1 and the lower plate assembly 2; the two reset bolts 5 are symmetrically installed on the inner walls of the left and right sides of the dust cover 3; each reset bolt 5 is connected to the locking / unlocking mechanism 4 via a nylon rope 14, enabling the locking / unlocking mechanism to unlock and reset.

[0025] like Figure 3 As shown, the locking and unlocking mechanism 4 includes a bracket 6, a left anti-rebound clip 7, a right anti-rebound clip 8, a conical locking pin 9, an umbrella-shaped lock cylinder 10, a tension spring 11, a compression spring 12, and an adjuster 13. The bracket 6 is a horizontally placed frame structure; the bottom of the bracket 6 is fixedly connected to the lower plate assembly 2; the conical locking pin 9 is located at the top of the bracket 6, and the top of the conical locking pin 9 is fixedly connected to the upper plate assembly 1; the umbrella-shaped lock cylinder 10 is vertically positioned at the center of the bracket 6; the compression spring 12 is fitted into the middle of the umbrella-shaped lock cylinder 10; the bottom of the bracket 6 has a hollow frame; the bottom of the umbrella-shaped lock cylinder 10 passes through the hollow frame and extends out from the bottom of the hollow frame; the compression spring 12 is fitted onto the outer wall of the bottom end of the umbrella-shaped lock cylinder 10; the adjuster 13... The adjuster 13 is fixedly embedded in the bottom wall of the hollow frame and fitted onto the outer wall of the umbrella-shaped lock cylinder 10. The top of the spring 12 contacts the bottom of the step on the side wall of the umbrella-shaped lock cylinder 10, and the bottom of the spring 12 contacts the upper surface of the adjuster 13. The left anti-rebound clip 7 and the right anti-rebound clip 8 are horizontally and symmetrically arranged on both sides of the umbrella-shaped lock cylinder 10. The fixed ends of the left anti-rebound clip 7 and the right anti-rebound clip 8 are mounted on the upper surface of the bracket 6 through a rotating joint. The tension spring 11 is horizontally mounted on the rotating ends of the left anti-rebound clip 7 and the right anti-rebound clip 8.

[0026] Of the two nylon ropes 14, one end of one nylon rope 14 is connected to the corresponding reset bolt 5, and the other end is connected to the rotating end of the left anti-rebound clip 7; one end of the other nylon rope 14 is connected to the corresponding reset bolt 5, and the other end is connected to the rotating end of the right anti-rebound clip 8.

[0027] In this invention, a conical groove is provided at the center of the bottom surface of the conical locking pin 9; the position of the conical groove corresponds to the top position of the umbrella-shaped lock cylinder 10. The rotating ends of the left anti-rebound clip 7 and the right anti-rebound clip 8 are rotated open relative to the fixed ends, and then rotated closed by the traction of the tension spring 11.

[0028] like Figure 4As shown, the top sidewall of the conical locking pin 9 of the present invention is provided with an umbrella structure along the circumferential direction; when the left anti-rebound clip 7 and the right anti-rebound clip 8 are rotated open, the inner walls of the left anti-rebound clip 7 and the right anti-rebound clip 8 are clamped at the outer wall of the umbrella structure, thereby keeping the left anti-rebound clip 7 and the right anti-rebound clip 8 open.

[0029] like Figure 4 , Figure 5 As shown, the locking process of the locking and unlocking mechanism 4 is as follows: By manually pulling out the two reset bolts 5 to both sides, the rotating ends of the left anti-rebound clip 7 and the right anti-rebound clip 8 are rotated and opened relative to the fixed ends by the two nylon ropes 14. Under the reset force of the compression spring 12, the umbrella-shaped lock cylinder 10 moves vertically upward until the top of the umbrella-shaped lock cylinder 10 extends into the conical groove of the conical lock pin 9, thus locking. After loosening the two reset bolts 5, under the reset force of the tension spring 11, the left anti-rebound clip 7 and the right anti-rebound clip 8 rotate and close, clamping on both sides of the umbrella structure, thus completing the locking. The reset process of the locking and unlocking mechanism 4 is the same as the unlocking and locking process.

[0030] like Figure 6 , Figure 7 As shown, the unlocking process of the locking and unlocking mechanism 4 is as follows: When vibration occurs, under the action of vibration force, the conical groove sidewall of the conical locking pin 9 presses against the umbrella-shaped lock cylinder 10, causing the umbrella-shaped lock cylinder 10 to move downward; at the same time, under the action of the restoring force of the tension spring 11, the left anti-rebound clip 7 and the right anti-rebound clip 8 continue to rotate and close; under the action of the left and right inward spring force of the tension spring 11, the left anti-rebound clip 7 and the right anti-rebound clip 8 clamp inward, separating the umbrella-shaped lock cylinder 10 at the bottom of the left anti-rebound clip 7 and the right anti-rebound clip 8, and finally realizing the movement separation between the conical locking pin 9 and the umbrella-shaped lock cylinder 10, thus unlocking.

[0031] The left anti-rebound clip 7, the right anti-rebound clip 8, and the bracket 6 form a lever structure; as Figure 8 As shown, to ensure that the umbrella-shaped lock cylinder 10 can be unlocked under any circumstances, the force balance relationship of the lever structure is as follows:

[0032] In the formula, The engagement stroke of the tension spring 11 when the left anti-rebound clip 7 or the right anti-rebound clip 8 is clamped.

[0033] The engagement stroke of the tension spring 11 when the left anti-rebound clip 7 or the right anti-rebound clip 8 is clamped.

[0034] To fix the stiffness of the close-coil tension spring for the left anti-rebound clip 7 or the right anti-rebound clip 8.

[0035] This is the length of the longer side of the lever mechanism.

[0036] The length of the shorter side of the lever mechanism.

[0037] The coefficient of friction is the contact point between the left anti-rebound clip 7 or the right anti-rebound clip 8 and the umbrella-shaped lock cylinder 10.

[0038] like Figure 9 As shown, in order to ensure that the umbrella-shaped lock cylinder 10 can unlock under the action of horizontal inertial force in a known seismic acceleration excitation, the force balance relationship of the umbrella-shaped lock cylinder 10 is the downward component of the horizontal inertial force. The upward restoring force of the compression spring 11 on the umbrella-shaped lock cylinder 10 is greater than that of the compression spring 11. That is, the force relationship satisfies:

[0039]

[0040]

[0041] In the formula, This is the original free length of the compression spring 11.

[0042] The compression length of the compression spring 11 after it is unlocked.

[0043] The stiffness of the compression spring 11.

[0044] Unlock acceleration for seismic waves.

[0045] This is the acceleration due to gravity.

[0046] The inertial mass of the upper plate assembly 1.

[0047] The vertical cone angle of the conical groove.

[0048] The locking-unlocking mechanism is normally in the umbrella-shaped lock cylinder extended upwards, tangential to the conical locking pin, with the left and right anti-rebound clips extended. The compression spring has preload relative to the umbrella-shaped lock cylinder, thus creating a different positive pressure on the conical locking pin from the upward movement of the umbrella-shaped lock cylinder. This ensures no displacement between the upper and lower plates and locks the cultural relic isolation device in the absence of an earthquake. When an earthquake occurs, the seismic waves excite the conical locking pin mounted on the upper plate, along with the upper plate assembly, generating a horizontal inertial force. This causes relative movement between the upper and lower plates. The downward component of this horizontal inertial force acts on the umbrella-shaped lock cylinder, pressing it into the hole in the center of the support. The left and right anti-rebound clips, under the action of the tension springs, tighten towards the center, separating the upper and lower plates and unlocking the cultural relic isolation device.

[0049] The bottom adjuster is connected to the umbrella-shaped lock cylinder by a thread. By adjusting the relative position of the bottom adjuster with respect to the umbrella-shaped lock cylinder, the initial working length of the compression spring is adjusted, thereby adjusting its preload. This, in turn, adjusts the magnitude of the positive pressure exerted by the umbrella-shaped lock cylinder on the conical locking pin, thus achieving the adjustment of the locking force. This enables the locking-unlocking mechanism to lock and unlock under a given seismic acceleration level.

[0050] After the earthquake, by controlling the slotted pan head bolts connected to the dust cover and the nylon ropes connected to the left and right anti-rebound clips to open to the left and right, the anti-rebound clips are pulled out to the left and right. Under the action of the compression spring, the umbrella-shaped lock core extends upward and becomes tangent to the conical locking pin again, thereby re-locking the upper and lower plates and resetting the mechanism.

[0051] This type of purely mechanical locking and unlocking mechanism can lock the cultural relic isolation device in the absence of seismic waves under normal conditions, and reliably unlock it under a given seismic wave acceleration excitation, so that the cultural relic isolation device can meet the normal working objectives.

[0052] This invention employs a spring, anti-rebound clip, umbrella-shaped lock core, and conical locking pin design. Compared with existing mechanical locking and unlocking mechanisms, it has a relatively simple structure, low processing cost, low requirements for assembly precision, and good versatility.

[0053] This invention employs a bottom adjuster design, which allows for adjustment of the initial working length of the compression spring as needed, thereby adjusting its preload and thus the locking force. This enables the locking and unlocking mechanism to adapt to locking and unlocking requirements under different horizontal inertial force excitations from seismic waves of varying magnitudes.

[0054] This invention adopts a nylon thread-opening anti-rebound clip design, which has a simple structure and can be remotely controlled, improving the reset capability of the locking and unlocking mechanism, thus greatly enhancing the reliability and convenience of the mechanism.

[0055] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solutions of the present invention by utilizing the methods and techniques disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the protection scope of the technical solutions of the present invention.

Claims

1. A purely mechanical locking-unlocking mechanism for use in cultural relic isolation devices, characterized in that: Includes an upper plate assembly (1), a lower plate assembly (2), a dust cover (3), a locking and unlocking mechanism (4), two reset bolts (5) and two nylon ropes (14); Among them, the lower plate assembly (2) is a rectangular plate structure placed horizontally; the upper plate assembly (1) is horizontally positioned above the center of the lower plate assembly (2); the locking and unlocking mechanism (4) is installed between the upper plate assembly (1) and the lower plate assembly (2); the dust cover (3) seals the upper plate assembly (1) and the lower plate assembly (2); two reset bolts (5) are symmetrically installed on the inner walls of the left and right sides of the dust cover (3); each reset bolt (5) is connected to the locking and unlocking mechanism (4) through a nylon wire (14) to achieve the unlocking and reset of the locking and unlocking mechanism.

2. The purely mechanical locking-unlocking mechanism for use in cultural relic isolation devices according to claim 1, characterized in that: The locking and unlocking mechanism (4) includes a bracket (6), a left anti-rebound clip (7), a right anti-rebound clip (8), a conical locking pin (9), an umbrella-shaped lock core (10), a tension spring (11), a compression spring (12), and an adjuster (13). Among them, the bracket (6) is a horizontally placed frame structure; the bottom of the bracket (6) is fixedly connected to the lower plate assembly (2); the conical locking pin (9) is set on the top of the bracket (6), and the top of the conical locking pin (9) is fixedly connected to the upper plate assembly (1); the umbrella-shaped lock core (10) is axially vertically set at the center of the bracket (6); the compression spring (12) is fitted in the middle of the umbrella-shaped lock core (10); the bottom of the bracket (6) is provided with a hollow frame; the bottom of the umbrella-shaped lock core (10) passes through the hollow frame and extends out from the bottom of the hollow frame; the compression spring (12) is fitted on the bottom outer wall of the umbrella-shaped lock core (10); the adjuster (13) The spring (12) is fitted on the bottom outer wall of the umbrella-shaped lock cylinder (10), and the adjuster (13) is fixedly embedded in the bottom wall of the hollow frame; the top of the spring (12) contacts the bottom of the side wall step of the umbrella-shaped lock cylinder (10), and the bottom of the spring (12) contacts the upper surface of the adjuster (13); the left anti-rebound clip (7) and the right anti-rebound clip (8) are horizontally symmetrically arranged on both sides of the umbrella-shaped lock cylinder (10); the fixed ends of the left anti-rebound clip (7) and the right anti-rebound clip (8) are mounted on the upper surface of the bracket (6) through a rotating joint; the tension spring (11) is horizontally mounted on the rotating ends of the left anti-rebound clip (7) and the right anti-rebound clip (8).

3. The purely mechanical locking-unlocking mechanism for use in cultural relic isolation devices according to claim 2, characterized in that: The bottom center of the conical locking pin (9) is provided with a conical groove; the position of the conical groove corresponds to the top position of the umbrella-shaped lock core (10).

4. A purely mechanical locking-unlocking mechanism for use in a cultural relic vibration isolation device according to claim 3, characterized in that: The rotating ends of the left anti-rebound clip (7) and the right anti-rebound clip (8) are rotated open relative to the fixed ends, and then rotated closed by the traction of the tension spring (11).

5. A purely mechanical locking-unlocking mechanism for use in a cultural relic vibration isolation device according to claim 4, characterized in that: The top side wall of the conical locking pin (9) is provided with an umbrella structure along the circumference; when the left anti-rebound clip (7) and the right anti-rebound clip (8) are rotated open, the inner walls of the left anti-rebound clip (7) and the right anti-rebound clip (8) are clamped at the outer wall of the umbrella structure, thereby keeping the left anti-rebound clip (7) and the right anti-rebound clip (8) open.

6. A purely mechanical locking-unlocking mechanism for use in a cultural relic vibration isolation device according to claim 5, characterized in that: One end of one nylon rope (14) is connected to the corresponding reset bolt (5), and the other end is connected to the rotating end of the left anti-rebound clip (7); one end of another nylon rope (14) is connected to the corresponding reset bolt (5), and the other end is connected to the rotating end of the right anti-rebound clip (8).

7. A purely mechanical locking-unlocking mechanism for use in a cultural relic isolation device according to claim 6, characterized in that: The locking process of the locking and unlocking mechanism (4) is as follows: By manually pulling out two reset bolts (5) to both sides, the rotating ends of the left anti-rebound clip (7) and the right anti-rebound clip (8) are rotated and opened relative to the fixed ends by two nylon ropes (14); under the reset force of the compression spring (12), the umbrella-shaped lock core (10) moves vertically upward until the top of the umbrella-shaped lock core (10) extends into the conical groove of the conical lock pin (9) to achieve locking; loosen the two reset bolts (5), and under the reset force of the tension spring (11), the left anti-rebound clip (7) and the right anti-rebound clip (8) rotate and close, clamping on both sides of the umbrella structure to complete the locking; The reset process of the locking and unlocking mechanism (4) is the same as the unlocking and locking process.

8. A purely mechanical locking-unlocking mechanism for use in a cultural relic vibration isolation device according to claim 7, characterized in that: The unlocking process of the locking and unlocking mechanism (4) is as follows: When vibration occurs, under the action of vibration force, the conical groove sidewall of the conical locking pin (9) presses against the umbrella-shaped lock core (10), causing the umbrella-shaped lock core (10) to move down; at the same time, under the action of the restoring force of the tension spring (11), the left anti-rebound clip (7) and the right anti-rebound clip (8) continue to rotate and close; under the action of the left and right inward spring force of the tension spring (11), the left anti-rebound clip (7) and the right anti-rebound clip (8) clamp inward, separating the umbrella-shaped lock core (10) at the bottom of the left anti-rebound clip (7) and the right anti-rebound clip (8), and finally realizing the movement separation between the conical locking pin (9) and the umbrella-shaped lock core (10), thus unlocking.

9. A purely mechanical locking-unlocking mechanism for use in a cultural relic isolation device according to claim 8, characterized in that: The left anti-rebound clip (7), the right anti-rebound clip (8), and the bracket (6) form a lever structure; in order to ensure that the umbrella-shaped lock cylinder (10) can be unlocked under any circumstances, the force balance relationship of the lever structure is as follows: In the formula, The engagement stroke of the tension spring (11) when the left anti-rebound clip (7) or the right anti-rebound clip (8) is clamped; The engagement stroke of the tension spring (11) when the left anti-rebound clip (7) or the right anti-rebound clip (8) is clamped; To fix the stiffness of the close-coil tension spring for the left anti-rebound clip (7) or the right anti-rebound clip (8); The length of the longer side of the lever mechanism; The length of the shorter side of the lever mechanism; The coefficient of friction at the contact point between the left anti-rebound clip (7) or the right anti-rebound clip (8) and the umbrella-shaped lock cylinder (10).

10. A purely mechanical locking-unlocking mechanism for use in a cultural relic vibration isolation device according to claim 8, characterized in that: To ensure that the umbrella-shaped lock cylinder (10) can unlock under the action of horizontal inertial force in the known earthquake acceleration excitation, the force balance relationship of the umbrella-shaped lock cylinder (10) is the downward component of the horizontal inertial force. The upward restoring force of the compression spring (11) on the umbrella-shaped lock cylinder (10) is greater than that of the compression spring (11). That is, the force relationship satisfies: In the formula, The original free length of the compression spring (11); The compression length of the compression spring (11) after it is unlocked; The stiffness of the compression spring (11); Unlock acceleration for seismic waves; It is the acceleration due to gravity; The inertial mass of the upper plate assembly (1); The vertical cone angle of the conical groove.

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